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# The following four lines of boilerplate have to be in your project's CMakeLists
# in this exact order for cmake to work correctly
cmake_minimum_required(VERSION 3.16)
include($ENV{IDF_PATH}/tools/cmake/project.cmake)
# "Trim" the build. Include the minimal set of components, main, and anything it depends on.
idf_build_set_property(MINIMAL_BUILD ON)
project(mqtt_tcp_custom_outbox)
# Add custom outbox implementation to mqtt component
idf_component_get_property(mqtt mqtt COMPONENT_LIB)
target_sources(${mqtt} PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/main/custom_outbox.cpp)
# Our C++ needs an extra dependency to mqtt component, so we add it to mqtt component.
# This is needed because we are adding another source to the mqtt component and the build
# system needs to be aware of it to be able to compile and link the mqtt component.
# First we get our dependency
idf_component_get_property(pthread pthread COMPONENT_LIB)
# And them we link the components
target_link_libraries(${mqtt} ${pthread})

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| Supported Targets | ESP32 | ESP32-C2 | ESP32-C3 | ESP32-C5 | ESP32-C6 | ESP32-C61 | ESP32-H2 | ESP32-P4 | ESP32-S2 | ESP32-S3 |
| ----------------- | ----- | -------- | -------- | -------- | -------- | --------- | -------- | -------- | -------- | -------- |
# ESP-MQTT custom outbox sample application
(See the README.md file in the upper level 'examples' directory for more information about examples.)
This example is a slightly modified version of the tcp example to show how to configure a custom outbox.
This example connects to the broker URI selected using `idf.py menuconfig` (using mqtt tcp transport) and as a demonstration subscribes/unsubscribes and send a message on certain topic.
(Please note that the public broker is maintained by the community so may not be always available, for details please see this [disclaimer](https://iot.eclipse.org/getting-started/#sandboxes))
Note: If the URI equals `FROM_STDIN` then the broker address is read from stdin upon application startup (used for testing)
It uses ESP-MQTT library which implements mqtt client to connect to mqtt broker.
## Necessary changes to customize the outbox
To customize the outbox the first step is to enable it in the menuconfig option.
With this option enabled, the default implementation isn't defined and the function definition needs to be added to mqtt component.
Any extra dependencies needed by the new sources also need to be added to the mqtt component. Refer to the example CMakeLists.txt file
for the details on how to do it.
## The custom outbox in the example
For the sake of this example the customized outbox implements the same functionalits of the regular but using C++ as a language.
The implementation uses [C++ Polymorphic memory resources]() to control memory allocations and limit the usage of the memory.
## How to use example
### Hardware Required
This example can be executed on any ESP32 board, the only required interface is WiFi and connection to internet.
### Configure the project
* Open the project configuration menu (`idf.py menuconfig`)
* Configure Wi-Fi or Ethernet under "Example Connection Configuration" menu. See "Establishing Wi-Fi or Ethernet Connection" section in [examples/protocols/README.md](../../README.md) for more details.
Note that the mandatory configurations for this example, mqtt custom outbox and C++ exceptions are automatically added by the `sdkconfig.defaults` file.
### Build and Flash
Build the project and flash it to the board, then run monitor tool to view serial output:
```
idf.py -p PORT flash monitor
```
(To exit the serial monitor, type ``Ctrl-]``.)
See the Getting Started Guide for full steps to configure and use ESP-IDF to build projects.
## Example Output
```
I (4635) example_common: Connected to example_netif_sta
I (4645) example_common: - IPv4 address: 192.168.33.206,
I (4645) example_common: - IPv6 address: fe80:0000:0000:0000:7e9e:bdff:fecf:00c0, type: ESP_IP6_ADDR_IS_LINK_LOCAL
I (4655) Monotonic: Monotonic: 400 bytes allocated, 400 total bytes in use
I (4665) Monotonic: Monotonic: 1000 bytes allocated, 1400 total bytes in use
I (4675) Monotonic: Monotonic: 128 bytes allocated, 1528 total bytes in use
I (4685) Pool: Pool: 32 bytes allocated, 32 total bytes in use
I (4685) Monotonic: Monotonic: 7688 bytes allocated, 9216 total bytes in use
I (4695) Monotonic: Monotonic: 128 bytes allocated, 9344 total bytes in use
I (4705) Pool: Pool: 480 bytes allocated, 512 total bytes in use
I (4715) Monotonic: Monotonic: 992 bytes allocated, 10336 total bytes in use
I (4715) Monotonic: Monotonic: 128 bytes allocated, 10464 total bytes in use
I (4725) Pool: Pool: 23 bytes allocated, 535 total bytes in use
I (4735) MQTT_EXAMPLE: Enqueued msg_id=14345
I (4735) Pool: Pool: 29 bytes allocated, 564 total bytes in use
I (4745) MQTT_EXAMPLE: Enqueued msg_id=3507
I (4745) MQTT_EXAMPLE: Other event id:7
I (4755) main_task: Returned from app_main()
I (5085) MQTT_EXAMPLE: MQTT_EVENT_CONNECTED
I (5085) Pool: Pool: 23 bytes allocated, 587 total bytes in use
I (5085) MQTT_EXAMPLE: sent publish successful, msg_id=47425
I (5085) Pool: Pool: 18 bytes allocated, 605 total bytes in use
I (5095) MQTT_EXAMPLE: sent subscribe successful, msg_id=60709
I (5105) Pool: Pool: 18 bytes allocated, 623 total bytes in use
I (5105) MQTT_EXAMPLE: sent subscribe successful, msg_id=33273
I (5395) Pool: Pool: 23 bytes deallocated, 623 total bytes in use
I (5395) MQTT_EXAMPLE: MQTT_EVENT_PUBLISHED, msg_id=47425
I (6005) Pool: Pool: 18 bytes deallocated, 623 total bytes in use
I (6005) MQTT_EXAMPLE: MQTT_EVENT_SUBSCRIBED, msg_id=60709
I (6005) MQTT_EXAMPLE: sent publish successful, msg_id=0
I (6015) Pool: Pool: 18 bytes deallocated, 623 total bytes in use
I (6015) MQTT_EXAMPLE: MQTT_EVENT_SUBSCRIBED, msg_id=33273
I (6025) MQTT_EXAMPLE: sent publish successful, msg_id=0
I (6035) MQTT_EXAMPLE: MQTT_EVENT_DATA
TOPIC=/topic/qos1
DATA=data_3
I (6315) MQTT_EXAMPLE: MQTT_EVENT_DATA
TOPIC=/topic/qos1
DATA=data_3
I (6315) Pool: Pool: 23 bytes deallocated, 623 total bytes in use
I (6315) MQTT_EXAMPLE: MQTT_EVENT_PUBLISHED, msg_id=14345
I (6615) MQTT_EXAMPLE: MQTT_EVENT_DATA
TOPIC=/topic/qos0
DATA=data
```

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idf_component_register(SRCS "app_main.c"
INCLUDE_DIRS "."
PRIV_REQUIRES mqtt nvs_flash esp_netif
)

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menu "Example Configuration"
config BROKER_URL
string "Broker URL"
default "mqtt://mqtt.eclipseprojects.io"
help
URL of the broker to connect to
config BROKER_URL_FROM_STDIN
bool
default y if BROKER_URL = "FROM_STDIN"
endmenu

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/*
* SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Unlicense OR CC0-1.0
*/
/* MQTT (over TCP) Example with custom outbox
This example code is in the Public Domain (or CC0 licensed, at your option.)
Unless required by applicable law or agreed to in writing, this
software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
CONDITIONS OF ANY KIND, either express or implied.
*/
#include <stdio.h>
#include <stdint.h>
#include <stddef.h>
#include <string.h>
#include "esp_system.h"
#include "nvs_flash.h"
#include "esp_event.h"
#include "esp_netif.h"
#include "protocol_examples_common.h"
#include "esp_log.h"
#include "mqtt_client.h"
static const char *TAG = "MQTT_EXAMPLE";
static void log_error_if_nonzero(const char *message, int error_code)
{
if (error_code != 0) {
ESP_LOGE(TAG, "Last error %s: 0x%x", message, error_code);
}
}
/*
* @brief Event handler registered to receive MQTT events
*
* This function is called by the MQTT client event loop.
*
* @param handler_args user data registered to the event.
* @param base Event base for the handler(always MQTT Base in this example).
* @param event_id The id for the received event.
* @param event_data The data for the event, esp_mqtt_event_handle_t.
*/
static void mqtt_event_handler(void *handler_args, esp_event_base_t base, int32_t event_id, void *event_data)
{
ESP_LOGD(TAG, "Event dispatched from event loop base=%s, event_id=%" PRIi32 "", base, event_id);
esp_mqtt_event_handle_t event = event_data;
esp_mqtt_client_handle_t client = event->client;
int msg_id;
switch ((esp_mqtt_event_id_t)event_id) {
case MQTT_EVENT_CONNECTED:
ESP_LOGI(TAG, "MQTT_EVENT_CONNECTED");
msg_id = esp_mqtt_client_publish(client, "/topic/qos1", "data_3", 0, 1, 0);
ESP_LOGI(TAG, "sent publish successful, msg_id=%d", msg_id);
msg_id = esp_mqtt_client_subscribe(client, "/topic/qos0", 0);
ESP_LOGI(TAG, "sent subscribe successful, msg_id=%d", msg_id);
msg_id = esp_mqtt_client_subscribe(client, "/topic/qos1", 1);
ESP_LOGI(TAG, "sent subscribe successful, msg_id=%d", msg_id);
break;
case MQTT_EVENT_DISCONNECTED:
ESP_LOGI(TAG, "MQTT_EVENT_DISCONNECTED");
break;
case MQTT_EVENT_SUBSCRIBED:
ESP_LOGI(TAG, "MQTT_EVENT_SUBSCRIBED, msg_id=%d", event->msg_id);
msg_id = esp_mqtt_client_publish(client, "/topic/qos0", "data", 0, 0, 0);
ESP_LOGI(TAG, "sent publish successful, msg_id=%d", msg_id);
break;
case MQTT_EVENT_UNSUBSCRIBED:
ESP_LOGI(TAG, "MQTT_EVENT_UNSUBSCRIBED, msg_id=%d", event->msg_id);
break;
case MQTT_EVENT_PUBLISHED:
ESP_LOGI(TAG, "MQTT_EVENT_PUBLISHED, msg_id=%d", event->msg_id);
break;
case MQTT_EVENT_DATA:
ESP_LOGI(TAG, "MQTT_EVENT_DATA");
printf("TOPIC=%.*s\r\n", event->topic_len, event->topic);
printf("DATA=%.*s\r\n", event->data_len, event->data);
break;
case MQTT_EVENT_ERROR:
ESP_LOGI(TAG, "MQTT_EVENT_ERROR");
if (event->error_handle->error_type == MQTT_ERROR_TYPE_TCP_TRANSPORT) {
log_error_if_nonzero("reported from esp-tls", event->error_handle->esp_tls_last_esp_err);
log_error_if_nonzero("reported from tls stack", event->error_handle->esp_tls_stack_err);
log_error_if_nonzero("captured as transport's socket errno", event->error_handle->esp_transport_sock_errno);
ESP_LOGI(TAG, "Last errno string (%s)", strerror(event->error_handle->esp_transport_sock_errno));
}
break;
default:
ESP_LOGI(TAG, "Other event id:%d", event->event_id);
break;
}
}
static void mqtt_app_start(void)
{
esp_mqtt_client_config_t mqtt_cfg = {
.broker.address.uri = CONFIG_BROKER_URL,
};
#if CONFIG_BROKER_URL_FROM_STDIN
char line[128];
if (strcmp(mqtt_cfg.broker.address.uri, "FROM_STDIN") == 0) {
int count = 0;
printf("Please enter url of mqtt broker\n");
while (count < 128) {
int c = fgetc(stdin);
if (c == '\n') {
line[count] = '\0';
break;
} else if (c > 0 && c < 127) {
line[count] = c;
++count;
}
vTaskDelay(10 / portTICK_PERIOD_MS);
}
mqtt_cfg.broker.address.uri = line;
printf("Broker url: %s\n", line);
} else {
ESP_LOGE(TAG, "Configuration mismatch: wrong broker url");
abort();
}
#endif /* CONFIG_BROKER_URL_FROM_STDIN */
esp_mqtt_client_handle_t client = esp_mqtt_client_init(&mqtt_cfg);
/* The last argument may be used to pass data to the event handler, in this example mqtt_event_handler */
esp_mqtt_client_register_event(client, ESP_EVENT_ANY_ID, mqtt_event_handler, NULL);
/*Let's enqueue a few messages to the outbox to see the allocations*/
int msg_id;
msg_id = esp_mqtt_client_enqueue(client, "/topic/qos1", "data_3", 0, 1, 0, true);
ESP_LOGI(TAG, "Enqueued msg_id=%d", msg_id);
msg_id = esp_mqtt_client_enqueue(client, "/topic/qos2", "QoS2 message", 0, 2, 0, true);
ESP_LOGI(TAG, "Enqueued msg_id=%d", msg_id);
/* Now we start the client and it's possible to see the memory usage for the operations in the outbox. */
esp_mqtt_client_start(client);
}
void app_main(void)
{
ESP_LOGI(TAG, "[APP] Startup..");
ESP_LOGI(TAG, "[APP] Free memory: %" PRIu32 " bytes", esp_get_free_heap_size());
ESP_LOGI(TAG, "[APP] IDF version: %s", esp_get_idf_version());
esp_log_level_set("*", ESP_LOG_INFO);
esp_log_level_set("mqtt_client", ESP_LOG_VERBOSE);
esp_log_level_set("MQTT_EXAMPLE", ESP_LOG_VERBOSE);
esp_log_level_set("TRANSPORT_BASE", ESP_LOG_VERBOSE);
esp_log_level_set("esp-tls", ESP_LOG_VERBOSE);
esp_log_level_set("TRANSPORT", ESP_LOG_VERBOSE);
esp_log_level_set("custom_outbox", ESP_LOG_VERBOSE);
ESP_ERROR_CHECK(nvs_flash_init());
ESP_ERROR_CHECK(esp_netif_init());
ESP_ERROR_CHECK(esp_event_loop_create_default());
/* This helper function configures Wi-Fi or Ethernet, as selected in menuconfig.
* Read "Establishing Wi-Fi or Ethernet Connection" section in
* examples/protocols/README.md for more information about this function.
*/
ESP_ERROR_CHECK(example_connect());
mqtt_app_start();
}

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/*
* SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Unlicense OR CC0-1.0
*/
#include <algorithm>
#include <cstddef>
#include <exception>
#include <deque>
#include <cstdint>
#include <memory>
#include <ranges>
#include <utility>
#include <vector>
#include <string>
#include <memory_resource>
#include "esp_log.h"
#include "mqtt_outbox.h"
constexpr auto TAG = "custom_outbox";
/*
* The trace resource class is created here as an example on how to build a custom memory resource
* The class is only needed to show where we are allocating from and to track allocations and deallocations.
*/
class trace_resource : public std::pmr::memory_resource {
public:
explicit trace_resource(std::string resource_name, std::pmr::memory_resource *upstream_resource = std::pmr::get_default_resource()) : upstream{upstream_resource}, name{std::move(resource_name)} {}
[[nodiscard]] std::string_view get_name() const noexcept
{
return std::string_view(name);
}
[[nodiscard]] auto upstream_resource() const
{
return upstream;
}
private:
void *do_allocate(std::size_t bytes, std::size_t alignment) override
{
auto *allocated = upstream->allocate(bytes, alignment);
allocated_total += bytes;
ESP_LOGI(name.c_str(), "%s: %zu bytes allocated, %zu total bytes in use", name.c_str(), bytes, allocated_total);
return allocated;
}
void do_deallocate(void *ptr, std::size_t bytes, std::size_t alignment) override
{
upstream->deallocate(ptr, bytes, alignment);
ESP_LOGI(name.c_str(), "%s: %zu bytes deallocated, %zu total bytes in use", name.c_str(), bytes, allocated_total);
}
[[nodiscard]] bool do_is_equal(const std::pmr::memory_resource &other) const noexcept override
{
return this == &other;
}
size_t allocated_total{};
std::pmr::memory_resource *upstream;
std::string name;
};
struct outbox_item {
/* Defining the allocator_type to let compiler know that our type is allocator aware,
* This way the allocator used for the outbox is propagated to the messages*/
using allocator_type = std::pmr::polymorphic_allocator<>;
/* Few strong types to diferetiate parameters*/
enum class id_t : int {};
enum class type_t : int {};
enum class qos_t : int {};
/* Allocator aware constructors */
outbox_item(
std::pmr::vector<uint8_t> message,
id_t msg_id,
type_t msg_type,
qos_t msg_qos,
outbox_tick_t tick,
pending_state_t pending_state,
allocator_type alloc = {}
) : message(std::move(message), alloc), id(msg_id), type(msg_type), qos(msg_qos), tick(tick), pending_state(pending_state) {}
/*Copy and move constructors have an extra allocator parameter, for copy default and allocator aware are the same.*/
outbox_item(const outbox_item &other, allocator_type alloc = {}) : message(other.message, alloc), id(other.id), type(other.type), qos(other.qos), tick(other.tick), pending_state(other.pending_state) {}
outbox_item(outbox_item &&other, allocator_type alloc) noexcept : message(std::move(other.message), alloc), id(other.id), type(other.type), qos(other.qos), tick(other.tick), pending_state(other.pending_state)
{}
outbox_item(const outbox_item &) = default;
outbox_item(outbox_item &&other) = default;
outbox_item &operator=(const outbox_item &rhs) = default;
outbox_item &operator=(outbox_item &&other) = default;
~outbox_item() = default;
/* Getters to support outbox operation */
[[nodiscard]] auto state() const noexcept
{
return pending_state;
}
[[nodiscard]] allocator_type get_allocator() const
{
return message.get_allocator();
}
void set(pending_state state) noexcept
{
pending_state = state;
}
void set(outbox_tick_t n_tick) noexcept
{
tick = n_tick;
}
[[nodiscard]] auto get_id() const noexcept
{
return id;
}
[[nodiscard]] auto get_type() const noexcept
{
return type;
}
[[nodiscard]] auto get_tick() const noexcept
{
return tick;
}
[[nodiscard]] auto get_data(size_t *len, uint16_t *msg_id, int *msg_type, int *msg_qos)
{
*len = message.size();
*msg_id = static_cast<uint16_t>(id);
*msg_type = static_cast<int>(type);
*msg_qos = static_cast<int>(qos);
return message.data();
}
[[nodiscard]] auto get_size() const noexcept
{
return message.size();
}
private:
std::pmr::vector<uint8_t> message;
id_t id;
type_t type;
qos_t qos;
outbox_tick_t tick;
pending_state_t pending_state;
};
/*
* For the outbox_t we let the special member functions as default and
* we don't extend the allocator aware versions for the sake of the simplicity, since the operations are not needed in the usage.
*/
struct outbox_t {
using allocator_type = std::pmr::polymorphic_allocator<>;
explicit outbox_t(allocator_type alloc = {}) : queue(alloc) {}
outbox_item_handle_t get(outbox_item::id_t msg_id)
{
if (auto item = std::ranges::find_if(queue, [msg_id](auto & item) {
return item.get_id() == msg_id;
});
item != std::end(queue)) {
return &(*item);
}
return nullptr;
}
int delete_expired(outbox_tick_t current_tick, outbox_tick_t timeout)
{
return std::erase_if(queue, [current_tick, timeout, this](const outbox_item & item) {
if (current_tick - item.get_tick() > timeout) {
total_size -= item.get_size();
return true;
}
return false;
});
}
outbox_item::id_t delete_single_expired(outbox_tick_t current_tick, outbox_tick_t timeout)
{
if (auto erase = std::ranges::find_if(queue, [current_tick, timeout](auto & item) {
return (current_tick - item.get_tick() > timeout);
}); erase != std::end(queue)) {
auto msg_id = erase->get_id();
total_size -= erase->get_size();
queue.erase(erase);
return msg_id;
}
return outbox_item::id_t{-1};
}
auto erase(outbox_item_handle_t to_erase)
{
return erase_if([to_erase](auto & item) {
return &item == to_erase;
});
}
auto erase(outbox_item::id_t msg_id, outbox_item::type_t msg_type)
{
return erase_if([msg_id, msg_type](auto & item) {
return (item.get_id() == msg_id && (item.get_type() == msg_type));
});
}
[[nodiscard]] auto size() const noexcept
{
return total_size;
}
void clear()
{
queue.clear();
}
outbox_item_handle_t enqueue(outbox_message_handle_t message, outbox_tick_t tick) noexcept
{
try {
auto &item =
queue.emplace_back(std::pmr::vector<uint8_t> {message->data, message->data + message->len},
outbox_item::id_t{message->msg_id},
outbox_item::type_t{message->msg_type},
outbox_item::qos_t{message->msg_qos},
tick,
QUEUED
);
total_size += item.get_size();
ESP_LOGD(TAG, "ENQUEUE msgid=%d, msg_type=%d, len=%d, size=%" PRIu64, message->msg_id, message->msg_type, message->len + message->remaining_len, outbox_get_size(this));
return &item;
} catch (const std::exception &e) {
return nullptr;
}
}
outbox_item_handle_t dequeue(pending_state_t state, outbox_tick_t *tick)
{
if (auto item = std::ranges::find_if(queue, [state](auto & item) {
return item.state() == state;
});
item != std::end(queue)) {
if (tick != nullptr) {
*tick = item->get_tick();
}
return &(*item);
}
return nullptr;
}
[[nodiscard]] allocator_type get_allocator() const
{
return queue.get_allocator();
}
private:
[[nodiscard]] esp_err_t erase_if(std::predicate<outbox_item &> auto &&predicate)
{
if (auto to_erase = std::ranges::find_if(queue, predicate); to_erase != std::end(queue)) {
total_size -= to_erase->get_size();
queue.erase(to_erase);
return ESP_OK;
}
return ESP_FAIL;
}
std::size_t total_size{};
std::pmr::deque<outbox_item> queue ;
};
extern "C" {
outbox_handle_t outbox_init()
{
/* First we create a fixed size memory buffer to be used. */
static constexpr auto work_memory_size = 16 * 1024;
static std::array<std::byte, work_memory_size> resource_buffer{};
try {
/*
* Since the outbox is managed by a C API we can't rely on C++ automatic cleanup and smart pointers but, on production code it would be better to add the
* memory resources to outbox_t, applying RAII principles, and make only outbox_item allocator aware. For the sake of the example we are keeping them
* separated to explictly show the relations.
* First we create the monotonic buffer and add null_memory_resource as upstream. This way if our working memory is exausted an exception is thrown.
*/
auto *monotonic_resource = new std::pmr::monotonic_buffer_resource{resource_buffer.data(), resource_buffer.size(), std::pmr::null_memory_resource()};
/*Here we add our custom trace wrapper type to trace allocations and deallocations*/
auto *trace_monotonic = new trace_resource("Monotonic", monotonic_resource);
/* We compose monotonic buffer with pool resource, since the monotonic deallocate is a no-op and we need to remove messages to not go out of memory.*/
auto *pool_resource = new std::pmr::unsynchronized_pool_resource{trace_monotonic};
auto *trace_pool = new trace_resource("Pool", pool_resource);
/* Our outbox class is created using the trace_pool as memory resource */
auto *outbox = new outbox_t{trace_pool};
return outbox;
} catch (const std::exception &e) {
ESP_LOGD(TAG, "Not enough memory to construct the outbox, review the resource_buffer size");
return nullptr;
}
}
outbox_item_handle_t outbox_enqueue(outbox_handle_t outbox, outbox_message_handle_t message, outbox_tick_t tick)
{
return outbox->enqueue(message, tick);
}
outbox_item_handle_t outbox_get(outbox_handle_t outbox, int msg_id)
{
return outbox->get(outbox_item::id_t{msg_id});
}
outbox_item_handle_t outbox_dequeue(outbox_handle_t outbox, pending_state_t pending, outbox_tick_t *tick)
{
return outbox->dequeue(pending, tick);
}
}
uint8_t *outbox_item_get_data(outbox_item_handle_t item, size_t *len, uint16_t *msg_id, int *msg_type, int *qos)
{
if (item == nullptr) {
return nullptr;
}
return item->get_data(len, msg_id, msg_type, qos);
}
esp_err_t outbox_delete_item(outbox_handle_t outbox, outbox_item_handle_t item_to_delete)
{
return outbox->erase(item_to_delete);
}
esp_err_t outbox_delete(outbox_handle_t outbox, int msg_id, int msg_type)
{
return outbox->erase(outbox_item::id_t{msg_id}, outbox_item::type_t{msg_type});
}
int outbox_delete_single_expired(outbox_handle_t outbox, outbox_tick_t current_tick, outbox_tick_t timeout)
{
return static_cast<int>(outbox->delete_single_expired(current_tick, timeout));
}
int outbox_delete_expired(outbox_handle_t outbox, outbox_tick_t current_tick, outbox_tick_t timeout)
{
return outbox->delete_expired(current_tick, timeout);
}
esp_err_t outbox_set_pending(outbox_handle_t outbox, int msg_id, pending_state_t pending)
{
if (auto *item = outbox->get(outbox_item::id_t{msg_id}); item != nullptr) {
item->set(pending);
return ESP_OK;
}
return ESP_FAIL;
}
pending_state_t outbox_item_get_pending(outbox_item_handle_t item)
{
if (item != nullptr) {
return item->state();
}
return QUEUED;
}
esp_err_t outbox_set_tick(outbox_handle_t outbox, int msg_id, outbox_tick_t tick)
{
if (auto *item = outbox->get(outbox_item::id_t{msg_id}); item != nullptr) {
item->set(tick);
return ESP_OK;
}
return ESP_FAIL;
}
uint64_t outbox_get_size(outbox_handle_t outbox)
{
return outbox->size();
}
void outbox_delete_all_items(outbox_handle_t outbox)
{
outbox->clear();
}
void outbox_destroy(outbox_handle_t outbox)
{
auto *trace_pool = static_cast<trace_resource *>(outbox->get_allocator().resource());
auto *pool_resource = static_cast<std::pmr::unsynchronized_pool_resource *>(trace_pool->upstream_resource());
auto *trace_monotonic = static_cast<trace_resource *>(pool_resource->upstream_resource());
auto *monotonic_resource = static_cast<std::pmr::monotonic_buffer_resource *>(trace_monotonic->upstream_resource());
delete monotonic_resource;
delete trace_monotonic;
delete pool_resource;
delete trace_pool;
delete outbox;
}

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@@ -1,5 +0,0 @@
dependencies:
espressif/mqtt:
version: '*'
protocol_examples_common:
path: ${IDF_PATH}/examples/common_components/protocol_examples_common

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CONFIG_MQTT_CUSTOM_OUTBOX=y
CONFIG_COMPILER_CXX_EXCEPTIONS=y
CONFIG_COMPILER_OPTIMIZATION_SIZE=y

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# The following four lines of boilerplate have to be in your project's CMakeLists
# in this exact order for cmake to work correctly
cmake_minimum_required(VERSION 3.16)
include($ENV{IDF_PATH}/tools/cmake/project.cmake)
# "Trim" the build. Include the minimal set of components, main, and anything it depends on.
idf_build_set_property(MINIMAL_BUILD ON)
project(mqtt5)

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@@ -1,78 +0,0 @@
| Supported Targets | ESP32 | ESP32-C2 | ESP32-C3 | ESP32-C5 | ESP32-C6 | ESP32-C61 | ESP32-H2 | ESP32-P4 | ESP32-S2 | ESP32-S3 |
| ----------------- | ----- | -------- | -------- | -------- | -------- | --------- | -------- | -------- | -------- | -------- |
# ESP-MQTT sample application
(See the README.md file in the upper level 'examples' directory for more information about examples.)
This example connects to the broker URI selected using `idf.py menuconfig` (using mqtt tcp transport) and as a demonstration subscribes/unsubscribes and send a message on certain topic.
(Please note that the public broker is maintained by the community so may not be always available, for details please see this [disclaimer](https://iot.eclipse.org/getting-started/#sandboxes))
Note: If the URI equals `FROM_STDIN` then the broker address is read from stdin upon application startup (used for testing)
It uses ESP-MQTT library which implements mqtt client to connect to mqtt broker with MQTT version 5.
The more details about MQTT v5, please refer to [official website](https://docs.oasis-open.org/mqtt/mqtt/v5.0/os/mqtt-v5.0-os.html)
## How to use example
### Hardware Required
This example can be executed on any ESP32 board, the only required interface is WiFi and connection to internet.
### Configure the project
* Open the project configuration menu (`idf.py menuconfig`)
* Configure Wi-Fi or Ethernet under "Example Connection Configuration" menu. See "Establishing Wi-Fi or Ethernet Connection" section in [examples/protocols/README.md](../../README.md) for more details.
* MQTT v5 protocol (`CONFIG_MQTT_PROTOCOL_5`) under "ESP-MQTT Configurations" menu is enabled by `sdkconfig.defaults`.
### Build and Flash
Build the project and flash it to the board, then run monitor tool to view serial output:
```
idf.py -p PORT flash monitor
```
(To exit the serial monitor, type ``Ctrl-]``.)
See the Getting Started Guide for full steps to configure and use ESP-IDF to build projects.
## Example Output
```
I (5119) esp_netif_handlers: example_connect: sta ip: 192.168.3.143, mask: 255.255.255.0, gw: 192.168.3.1
I (5119) example_connect: Got IPv4 event: Interface "example_connect: sta" address: 192.168.3.143
I (5619) example_connect: Got IPv6 event: Interface "example_connect: sta" address: fe80:0000:0000:0000:c64f:33ff:fe24:6645, type: ESP_IP6_ADDR_IS_LINK_LOCAL
I (5619) example_connect: Connected to example_connect: sta
I (5629) example_connect: - IPv4 address: 192.168.3.143
I (5629) example_connect: - IPv6 address: fe80:0000:0000:0000:c64f:33ff:fe24:6645, type: ESP_IP6_ADDR_IS_LINK_LOCAL
I (5649) MQTT5_EXAMPLE: Other event id:7
W (6299) wifi:<ba-add>idx:0 (ifx:0, 34:29:12:43:c5:40), tid:7, ssn:0, winSize:64
I (7439) MQTT5_EXAMPLE: MQTT_EVENT_CONNECTED
I (7439) MQTT5_EXAMPLE: sent publish successful, msg_id=53118
I (7439) MQTT5_EXAMPLE: sent subscribe successful, msg_id=41391
I (7439) MQTT5_EXAMPLE: sent subscribe successful, msg_id=13695
I (7449) MQTT5_EXAMPLE: sent unsubscribe successful, msg_id=55594
I (7649) mqtt5_client: MQTT_MSG_TYPE_PUBACK return code is -1
I (7649) MQTT5_EXAMPLE: MQTT_EVENT_PUBLISHED, msg_id=53118
I (8039) mqtt5_client: MQTT_MSG_TYPE_SUBACK return code is 0
I (8049) MQTT5_EXAMPLE: MQTT_EVENT_SUBSCRIBED, msg_id=41391
I (8049) MQTT5_EXAMPLE: sent publish successful, msg_id=0
I (8059) mqtt5_client: MQTT_MSG_TYPE_SUBACK return code is 2
I (8059) MQTT5_EXAMPLE: MQTT_EVENT_SUBSCRIBED, msg_id=13695
I (8069) MQTT5_EXAMPLE: sent publish successful, msg_id=0
I (8079) MQTT5_EXAMPLE: MQTT_EVENT_DATA
I (8079) MQTT5_EXAMPLE: key is board, value is esp32
I (8079) MQTT5_EXAMPLE: key is u, value is user
I (8089) MQTT5_EXAMPLE: key is p, value is password
I (8089) MQTT5_EXAMPLE: payload_format_indicator is 1
I (8099) MQTT5_EXAMPLE: response_topic is /topic/test/response
I (8109) MQTT5_EXAMPLE: correlation_data is 123456
I (8109) MQTT5_EXAMPLE: content_type is
I (8119) MQTT5_EXAMPLE: TOPIC=/topic/qos1
I (8119) MQTT5_EXAMPLE: DATA=data_3
I (8129) mqtt5_client: MQTT_MSG_TYPE_UNSUBACK return code is 0
I (8129) MQTT5_EXAMPLE: MQTT_EVENT_UNSUBSCRIBED, msg_id=55594
I (8139) mqtt_client: Client asked to disconnect
I (9159) MQTT5_EXAMPLE: MQTT_EVENT_DISCONNECTED
```

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idf_component_register(SRCS "app_main.c"
PRIV_REQUIRES mqtt nvs_flash esp_netif
INCLUDE_DIRS ".")

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@@ -1,13 +0,0 @@
menu "Example Configuration"
config BROKER_URL
string "Broker URL"
default "mqtt://mqtt.eclipseprojects.io"
help
URL of the broker to connect to
config BROKER_URL_FROM_STDIN
bool
default y if BROKER_URL = "FROM_STDIN"
endmenu

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@@ -1,290 +0,0 @@
/*
* SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <stdio.h>
#include <stdint.h>
#include <stddef.h>
#include <string.h>
#include "esp_system.h"
#include "nvs_flash.h"
#include "esp_event.h"
#include "esp_netif.h"
#include "protocol_examples_common.h"
#include "esp_log.h"
#include "mqtt_client.h"
static const char *TAG = "mqtt5_example";
static void log_error_if_nonzero(const char *message, int error_code)
{
if (error_code != 0) {
ESP_LOGE(TAG, "Last error %s: 0x%x", message, error_code);
}
}
static esp_mqtt5_user_property_item_t user_property_arr[] = {
{"board", "esp32"},
{"u", "user"},
{"p", "password"}
};
#define USE_PROPERTY_ARR_SIZE sizeof(user_property_arr)/sizeof(esp_mqtt5_user_property_item_t)
static esp_mqtt5_publish_property_config_t publish_property = {
.payload_format_indicator = 1,
.message_expiry_interval = 1000,
.topic_alias = 0,
.response_topic = "/topic/test/response",
.correlation_data = "123456",
.correlation_data_len = 6,
};
static esp_mqtt5_subscribe_property_config_t subscribe_property = {
.subscribe_id = 25555,
.no_local_flag = false,
.retain_as_published_flag = false,
.retain_handle = 0,
.is_share_subscribe = true,
.share_name = "group1",
};
static esp_mqtt5_subscribe_property_config_t subscribe1_property = {
.subscribe_id = 25555,
.no_local_flag = true,
.retain_as_published_flag = false,
.retain_handle = 0,
};
static esp_mqtt5_unsubscribe_property_config_t unsubscribe_property = {
.is_share_subscribe = true,
.share_name = "group1",
};
static esp_mqtt5_disconnect_property_config_t disconnect_property = {
.session_expiry_interval = 60,
.disconnect_reason = 0,
};
static void print_user_property(mqtt5_user_property_handle_t user_property)
{
if (user_property) {
uint8_t count = esp_mqtt5_client_get_user_property_count(user_property);
if (count) {
esp_mqtt5_user_property_item_t *item = malloc(count * sizeof(esp_mqtt5_user_property_item_t));
if (esp_mqtt5_client_get_user_property(user_property, item, &count) == ESP_OK) {
for (int i = 0; i < count; i ++) {
esp_mqtt5_user_property_item_t *t = &item[i];
ESP_LOGI(TAG, "key is %s, value is %s", t->key, t->value);
free((char *)t->key);
free((char *)t->value);
}
}
free(item);
}
}
}
/*
* @brief Event handler registered to receive MQTT events
*
* This function is called by the MQTT client event loop.
*
* @param handler_args user data registered to the event.
* @param base Event base for the handler(always MQTT Base in this example).
* @param event_id The id for the received event.
* @param event_data The data for the event, esp_mqtt_event_handle_t.
*/
static void mqtt5_event_handler(void *handler_args, esp_event_base_t base, int32_t event_id, void *event_data)
{
ESP_LOGD(TAG, "Event dispatched from event loop base=%s, event_id=%" PRIi32, base, event_id);
esp_mqtt_event_handle_t event = event_data;
esp_mqtt_client_handle_t client = event->client;
int msg_id;
ESP_LOGD(TAG, "free heap size is %" PRIu32 ", minimum %" PRIu32, esp_get_free_heap_size(), esp_get_minimum_free_heap_size());
switch ((esp_mqtt_event_id_t)event_id) {
case MQTT_EVENT_CONNECTED:
ESP_LOGI(TAG, "MQTT_EVENT_CONNECTED");
print_user_property(event->property->user_property);
esp_mqtt5_client_set_user_property(&publish_property.user_property, user_property_arr, USE_PROPERTY_ARR_SIZE);
esp_mqtt5_client_set_publish_property(client, &publish_property);
msg_id = esp_mqtt_client_publish(client, "/topic/qos1", "data_3", 0, 1, 1);
esp_mqtt5_client_delete_user_property(publish_property.user_property);
publish_property.user_property = NULL;
ESP_LOGI(TAG, "sent publish successful, msg_id=%d", msg_id);
esp_mqtt5_client_set_user_property(&subscribe_property.user_property, user_property_arr, USE_PROPERTY_ARR_SIZE);
esp_mqtt5_client_set_subscribe_property(client, &subscribe_property);
msg_id = esp_mqtt_client_subscribe(client, "/topic/qos0", 0);
esp_mqtt5_client_delete_user_property(subscribe_property.user_property);
subscribe_property.user_property = NULL;
ESP_LOGI(TAG, "sent subscribe successful, msg_id=%d", msg_id);
esp_mqtt5_client_set_user_property(&subscribe1_property.user_property, user_property_arr, USE_PROPERTY_ARR_SIZE);
esp_mqtt5_client_set_subscribe_property(client, &subscribe1_property);
msg_id = esp_mqtt_client_subscribe(client, "/topic/qos1", 2);
esp_mqtt5_client_delete_user_property(subscribe1_property.user_property);
subscribe1_property.user_property = NULL;
ESP_LOGI(TAG, "sent subscribe successful, msg_id=%d", msg_id);
esp_mqtt5_client_set_user_property(&unsubscribe_property.user_property, user_property_arr, USE_PROPERTY_ARR_SIZE);
esp_mqtt5_client_set_unsubscribe_property(client, &unsubscribe_property);
msg_id = esp_mqtt_client_unsubscribe(client, "/topic/qos0");
ESP_LOGI(TAG, "sent unsubscribe successful, msg_id=%d", msg_id);
esp_mqtt5_client_delete_user_property(unsubscribe_property.user_property);
unsubscribe_property.user_property = NULL;
break;
case MQTT_EVENT_DISCONNECTED:
ESP_LOGI(TAG, "MQTT_EVENT_DISCONNECTED");
print_user_property(event->property->user_property);
break;
case MQTT_EVENT_SUBSCRIBED:
ESP_LOGI(TAG, "MQTT_EVENT_SUBSCRIBED, msg_id=%d, reason code=0x%02x ", event->msg_id, (uint8_t)*event->data);
print_user_property(event->property->user_property);
esp_mqtt5_client_set_publish_property(client, &publish_property);
msg_id = esp_mqtt_client_publish(client, "/topic/qos0", "data", 0, 0, 0);
ESP_LOGI(TAG, "sent publish successful, msg_id=%d", msg_id);
break;
case MQTT_EVENT_UNSUBSCRIBED:
ESP_LOGI(TAG, "MQTT_EVENT_UNSUBSCRIBED, msg_id=%d", event->msg_id);
print_user_property(event->property->user_property);
esp_mqtt5_client_set_user_property(&disconnect_property.user_property, user_property_arr, USE_PROPERTY_ARR_SIZE);
esp_mqtt5_client_set_disconnect_property(client, &disconnect_property);
esp_mqtt5_client_delete_user_property(disconnect_property.user_property);
disconnect_property.user_property = NULL;
esp_mqtt_client_disconnect(client);
break;
case MQTT_EVENT_PUBLISHED:
ESP_LOGI(TAG, "MQTT_EVENT_PUBLISHED, msg_id=%d", event->msg_id);
print_user_property(event->property->user_property);
break;
case MQTT_EVENT_DATA:
ESP_LOGI(TAG, "MQTT_EVENT_DATA");
print_user_property(event->property->user_property);
ESP_LOGI(TAG, "payload_format_indicator is %d", event->property->payload_format_indicator);
ESP_LOGI(TAG, "response_topic is %.*s", event->property->response_topic_len, event->property->response_topic);
ESP_LOGI(TAG, "correlation_data is %.*s", event->property->correlation_data_len, event->property->correlation_data);
ESP_LOGI(TAG, "content_type is %.*s", event->property->content_type_len, event->property->content_type);
ESP_LOGI(TAG, "TOPIC=%.*s", event->topic_len, event->topic);
ESP_LOGI(TAG, "DATA=%.*s", event->data_len, event->data);
break;
case MQTT_EVENT_ERROR:
ESP_LOGI(TAG, "MQTT_EVENT_ERROR");
print_user_property(event->property->user_property);
ESP_LOGI(TAG, "MQTT5 return code is %d", event->error_handle->connect_return_code);
if (event->error_handle->error_type == MQTT_ERROR_TYPE_TCP_TRANSPORT) {
log_error_if_nonzero("reported from esp-tls", event->error_handle->esp_tls_last_esp_err);
log_error_if_nonzero("reported from tls stack", event->error_handle->esp_tls_stack_err);
log_error_if_nonzero("captured as transport's socket errno", event->error_handle->esp_transport_sock_errno);
ESP_LOGI(TAG, "Last errno string (%s)", strerror(event->error_handle->esp_transport_sock_errno));
}
break;
default:
ESP_LOGI(TAG, "Other event id:%d", event->event_id);
break;
}
}
static void mqtt5_app_start(void)
{
esp_mqtt5_connection_property_config_t connect_property = {
.session_expiry_interval = 10,
.maximum_packet_size = 1024,
.receive_maximum = 65535,
.topic_alias_maximum = 2,
.request_resp_info = true,
.request_problem_info = true,
.will_delay_interval = 10,
.payload_format_indicator = true,
.message_expiry_interval = 10,
.response_topic = "/test/response",
.correlation_data = "123456",
.correlation_data_len = 6,
};
esp_mqtt_client_config_t mqtt5_cfg = {
.broker.address.uri = CONFIG_BROKER_URL,
.session.protocol_ver = MQTT_PROTOCOL_V_5,
.network.disable_auto_reconnect = true,
.credentials.username = "123",
.credentials.authentication.password = "456",
.session.last_will.topic = "/topic/will",
.session.last_will.msg = "i will leave",
.session.last_will.msg_len = 12,
.session.last_will.qos = 1,
.session.last_will.retain = true,
};
#if CONFIG_BROKER_URL_FROM_STDIN
char line[128];
if (strcmp(mqtt5_cfg.uri, "FROM_STDIN") == 0) {
int count = 0;
printf("Please enter url of mqtt broker\n");
while (count < 128) {
int c = fgetc(stdin);
if (c == '\n') {
line[count] = '\0';
break;
} else if (c > 0 && c < 127) {
line[count] = c;
++count;
}
vTaskDelay(10 / portTICK_PERIOD_MS);
}
mqtt5_cfg.broker.address.uri = line;
printf("Broker url: %s\n", line);
} else {
ESP_LOGE(TAG, "Configuration mismatch: wrong broker url");
abort();
}
#endif /* CONFIG_BROKER_URL_FROM_STDIN */
esp_mqtt_client_handle_t client = esp_mqtt_client_init(&mqtt5_cfg);
/* Set connection properties and user properties */
esp_mqtt5_client_set_user_property(&connect_property.user_property, user_property_arr, USE_PROPERTY_ARR_SIZE);
esp_mqtt5_client_set_user_property(&connect_property.will_user_property, user_property_arr, USE_PROPERTY_ARR_SIZE);
esp_mqtt5_client_set_connect_property(client, &connect_property);
/* If you call esp_mqtt5_client_set_user_property to set user properties, DO NOT forget to delete them.
* esp_mqtt5_client_set_connect_property will malloc buffer to store the user_property and you can delete it after
*/
esp_mqtt5_client_delete_user_property(connect_property.user_property);
esp_mqtt5_client_delete_user_property(connect_property.will_user_property);
/* The last argument may be used to pass data to the event handler, in this example mqtt_event_handler */
esp_mqtt_client_register_event(client, ESP_EVENT_ANY_ID, mqtt5_event_handler, NULL);
esp_mqtt_client_start(client);
}
void app_main(void)
{
ESP_LOGI(TAG, "[APP] Startup..");
ESP_LOGI(TAG, "[APP] Free memory: %" PRIu32 " bytes", esp_get_free_heap_size());
ESP_LOGI(TAG, "[APP] IDF version: %s", esp_get_idf_version());
esp_log_level_set("*", ESP_LOG_INFO);
esp_log_level_set("mqtt_client", ESP_LOG_VERBOSE);
esp_log_level_set("mqtt_example", ESP_LOG_VERBOSE);
esp_log_level_set("transport_base", ESP_LOG_VERBOSE);
esp_log_level_set("esp-tls", ESP_LOG_VERBOSE);
esp_log_level_set("transport", ESP_LOG_VERBOSE);
esp_log_level_set("outbox", ESP_LOG_VERBOSE);
ESP_ERROR_CHECK(nvs_flash_init());
ESP_ERROR_CHECK(esp_netif_init());
ESP_ERROR_CHECK(esp_event_loop_create_default());
/* This helper function configures Wi-Fi or Ethernet, as selected in menuconfig.
* Read "Establishing Wi-Fi or Ethernet Connection" section in
* examples/protocols/README.md for more information about this function.
*/
ESP_ERROR_CHECK(example_connect());
mqtt5_app_start();
}

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@@ -1,5 +0,0 @@
dependencies:
espressif/mqtt:
version: '*'
protocol_examples_common:
path: ${IDF_PATH}/examples/common_components/protocol_examples_common

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@@ -1,65 +0,0 @@
#!/usr/bin/env python
#
# SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
# SPDX-License-Identifier: Apache-2.0
import logging
import os
import pytest
from pytest_embedded import Dut
from pytest_embedded_idf.utils import idf_parametrize
@pytest.mark.ethernet
@idf_parametrize('target', ['esp32'], indirect=['target'])
def test_examples_protocol_mqtt5(dut: Dut) -> None:
"""
steps: |
1. join AP
2. connect to mqtt://mqtt.eclipseprojects.io
3. check connection success
"""
# check and log bin size
binary_file = os.path.join(dut.app.binary_path, 'mqtt5.bin')
bin_size = os.path.getsize(binary_file)
logging.info('mqtt5_bin_size : {}KB'.format(bin_size // 1024))
# check if connected or not
dut.expect_exact('MQTT_EVENT_CONNECTED', timeout=30)
# check log
res = dut.expect(r'sent publish successful, msg_id=(\d+)[^\d]')
msgid_pub1 = res.group(1).decode('utf8')
res = dut.expect(r'sent subscribe successful, msg_id=(\d+)[^\d]')
msgid_sub1 = res.group(1).decode('utf8')
res = dut.expect(r'sent subscribe successful, msg_id=(\d+)[^\d]')
msgid_sub2 = res.group(1).decode('utf8')
res = dut.expect(r'sent unsubscribe successful, msg_id=(\d+)[^\d]')
msgid_unsub = res.group(1).decode('utf8')
res = dut.expect(r'MQTT_EVENT_PUBLISHED, msg_id=(\d+)[^\d]')
msgid_pubd = res.group(1).decode('utf8')
assert msgid_pubd == msgid_pub1
res = dut.expect(r'MQTT_EVENT_SUBSCRIBED, msg_id=(\d+)[^\d]')
msgid_subd = res.group(1).decode('utf8')
assert msgid_subd == msgid_sub1
dut.expect_exact('sent publish successful, msg_id=0')
res = dut.expect(r'MQTT_EVENT_SUBSCRIBED, msg_id=(\d+)[^\d]')
msgid_subd = res.group(1).decode('utf8')
assert msgid_subd == msgid_sub2
dut.expect_exact('sent publish successful, msg_id=0')
dut.expect_exact('MQTT_EVENT_DATA')
dut.expect_exact('key is board, value is esp32')
dut.expect_exact('key is u, value is user')
dut.expect_exact('key is p, value is password')
dut.expect_exact('payload_format_indicator is 1')
dut.expect_exact('response_topic is /topic/test/response')
dut.expect_exact('correlation_data is 123456')
dut.expect_exact('TOPIC=/topic/qos1')
dut.expect_exact('DATA=data_3')
res = dut.expect(r'MQTT_EVENT_UNSUBSCRIBED, msg_id=(\d+)[^\d]')
msgid_unsubd = res.group(1).decode('utf8')
assert msgid_unsubd == msgid_unsub
dut.expect_exact('MQTT_EVENT_DISCONNECTED')
logging.info('MQTT5 pytest pass')

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@@ -1,10 +0,0 @@
CONFIG_EXAMPLE_CONNECT_ETHERNET=y
CONFIG_EXAMPLE_CONNECT_WIFI=n
CONFIG_EXAMPLE_USE_INTERNAL_ETHERNET=y
CONFIG_EXAMPLE_ETH_PHY_IP101=y
CONFIG_EXAMPLE_ETH_MDC_GPIO=23
CONFIG_EXAMPLE_ETH_MDIO_GPIO=18
CONFIG_EXAMPLE_ETH_PHY_RST_GPIO=5
CONFIG_EXAMPLE_ETH_PHY_ADDR=1
CONFIG_MQTT_PROTOCOL_5=y
CONFIG_BROKER_URL="mqtt://${EXAMPLE_MQTTV5_BROKER_TCP}"

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@@ -1,11 +0,0 @@
# The following four lines of boilerplate have to be in your project's CMakeLists
# in this exact order for cmake to work correctly
cmake_minimum_required(VERSION 3.16)
include($ENV{IDF_PATH}/tools/cmake/project.cmake)
# "Trim" the build. Include the minimal set of components, main, and anything it depends on.
idf_build_set_property(MINIMAL_BUILD ON)
project(mqtt_ssl)
target_add_binary_data(${PROJECT_NAME}.elf "main/mqtt_eclipseprojects_io.pem" TEXT)

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@@ -1,70 +0,0 @@
| Supported Targets | ESP32 | ESP32-C2 | ESP32-C3 | ESP32-C5 | ESP32-C6 | ESP32-C61 | ESP32-H2 | ESP32-P4 | ESP32-S2 | ESP32-S3 |
| ----------------- | ----- | -------- | -------- | -------- | -------- | --------- | -------- | -------- | -------- | -------- |
# ESP-MQTT SSL Sample application
(See the README.md file in the upper level 'examples' directory for more information about examples.)
This example connects to the broker mqtt.eclipseprojects.io using ssl transport and as a demonstration subscribes/unsubscribes and send a message on certain topic.
(Please note that the public broker is maintained by the community so may not be always available, for details please see this [disclaimer](https://iot.eclipse.org/getting-started/#sandboxes))
It uses ESP-MQTT library which implements mqtt client to connect to mqtt broker.
## How to use example
### Hardware Required
This example can be executed on any ESP32 board, the only required interface is WiFi and connection to internet.
### Configure the project
* Open the project configuration menu (`idf.py menuconfig`)
* Configure Wi-Fi or Ethernet under "Example Connection Configuration" menu. See "Establishing Wi-Fi or Ethernet Connection" section in [examples/protocols/README.md](../../README.md) for more details.
PEM certificate for this example could be extracted from an openssl `s_client` command connecting to mqtt.eclipseprojects.io.
In case a host operating system has `openssl` and `sed` packages installed, one could execute the following command to download and save the root certificate to a file (Note for Windows users: Both Linux like environment or Windows native packages may be used).
```
echo "" | openssl s_client -showcerts -connect mqtt.eclipseprojects.io:8883 | sed -n "1,/Root/d; /BEGIN/,/END/p" | openssl x509 -outform PEM >mqtt_eclipse_org.pem
```
Please note that this is not a general command for downloading a root certificate for an arbitrary host;
this command works with mqtt.eclipseprojects.io as the site provides root certificate in the chain, which then could be extracted
with text operation.
### Build and Flash
Build the project and flash it to the board, then run monitor tool to view serial output:
```
idf.py -p PORT flash monitor
```
(To exit the serial monitor, type ``Ctrl-]``.)
See the Getting Started Guide for full steps to configure and use ESP-IDF to build projects.
## Example Output
```
I (3714) event: sta ip: 192.168.0.139, mask: 255.255.255.0, gw: 192.168.0.2
I (3714) system_api: Base MAC address is not set, read default base MAC address from BLK0 of EFUSE
I (3964) MQTT_CLIENT: Sending MQTT CONNECT message, type: 1, id: 0000
I (4164) MQTTS_EXAMPLE: MQTT_EVENT_CONNECTED
I (4174) MQTTS_EXAMPLE: sent publish successful, msg_id=41464
I (4174) MQTTS_EXAMPLE: sent subscribe successful, msg_id=17886
I (4174) MQTTS_EXAMPLE: sent subscribe successful, msg_id=42970
I (4184) MQTTS_EXAMPLE: sent unsubscribe successful, msg_id=50241
I (4314) MQTTS_EXAMPLE: MQTT_EVENT_PUBLISHED, msg_id=41464
I (4484) MQTTS_EXAMPLE: MQTT_EVENT_SUBSCRIBED, msg_id=17886
I (4484) MQTTS_EXAMPLE: sent publish successful, msg_id=0
I (4684) MQTTS_EXAMPLE: MQTT_EVENT_SUBSCRIBED, msg_id=42970
I (4684) MQTTS_EXAMPLE: sent publish successful, msg_id=0
I (4884) MQTT_CLIENT: deliver_publish, message_length_read=19, message_length=19
I (4884) MQTTS_EXAMPLE: MQTT_EVENT_DATA
TOPIC=/topic/qos0
DATA=data
I (5194) MQTT_CLIENT: deliver_publish, message_length_read=19, message_length=19
I (5194) MQTTS_EXAMPLE: MQTT_EVENT_DATA
TOPIC=/topic/qos0
DATA=data
```

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@@ -1,3 +0,0 @@
idf_component_register(SRCS "app_main.c"
PRIV_REQUIRES mqtt esp_partition nvs_flash esp_netif app_update
INCLUDE_DIRS ".")

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@@ -1,26 +0,0 @@
menu "Example Configuration"
config BROKER_URI
string "Broker URL"
default "mqtts://mqtt.eclipseprojects.io:8883"
help
URL of an mqtt broker which this example connects to.
config BROKER_CERTIFICATE_OVERRIDE
string "Broker certificate override"
default ""
help
Please leave empty if broker certificate included from a textfile; otherwise fill in a base64 part of PEM
format certificate
config BROKER_CERTIFICATE_OVERRIDDEN
bool
default y if BROKER_CERTIFICATE_OVERRIDE != ""
config BROKER_BIN_SIZE_TO_SEND
# This option is not visible and is used only to set parameters for example tests
# Here we configure the data size to send and to be expected in the python script
int
default 20000
endmenu

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@@ -1,165 +0,0 @@
/* MQTT over SSL Example
This example code is in the Public Domain (or CC0 licensed, at your option.)
Unless required by applicable law or agreed to in writing, this
software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
CONDITIONS OF ANY KIND, either express or implied.
*/
#include <stdio.h>
#include <stdint.h>
#include <stddef.h>
#include <string.h>
#include "esp_system.h"
#include "esp_partition.h"
#include "nvs_flash.h"
#include "esp_event.h"
#include "esp_netif.h"
#include "protocol_examples_common.h"
#include "esp_log.h"
#include "mqtt_client.h"
#include "esp_tls.h"
#include "esp_ota_ops.h"
#include <sys/param.h>
static const char *TAG = "mqtts_example";
#if CONFIG_BROKER_CERTIFICATE_OVERRIDDEN == 1
static const uint8_t mqtt_eclipseprojects_io_pem_start[] = "-----BEGIN CERTIFICATE-----\n" CONFIG_BROKER_CERTIFICATE_OVERRIDE "\n-----END CERTIFICATE-----";
#else
extern const uint8_t mqtt_eclipseprojects_io_pem_start[] asm("_binary_mqtt_eclipseprojects_io_pem_start");
#endif
extern const uint8_t mqtt_eclipseprojects_io_pem_end[] asm("_binary_mqtt_eclipseprojects_io_pem_end");
//
// Note: this function is for testing purposes only publishing part of the active partition
// (to be checked against the original binary)
//
static void send_binary(esp_mqtt_client_handle_t client)
{
esp_partition_mmap_handle_t out_handle;
const void *binary_address;
const esp_partition_t *partition = esp_ota_get_running_partition();
esp_partition_mmap(partition, 0, partition->size, ESP_PARTITION_MMAP_DATA, &binary_address, &out_handle);
// sending only the configured portion of the partition (if it's less than the partition size)
int binary_size = MIN(CONFIG_BROKER_BIN_SIZE_TO_SEND, partition->size);
int msg_id = esp_mqtt_client_publish(client, "/topic/binary", binary_address, binary_size, 0, 0);
ESP_LOGI(TAG, "binary sent with msg_id=%d", msg_id);
}
/*
* @brief Event handler registered to receive MQTT events
*
* This function is called by the MQTT client event loop.
*
* @param handler_args user data registered to the event.
* @param base Event base for the handler(always MQTT Base in this example).
* @param event_id The id for the received event.
* @param event_data The data for the event, esp_mqtt_event_handle_t.
*/
static void mqtt_event_handler(void *handler_args, esp_event_base_t base, int32_t event_id, void *event_data)
{
ESP_LOGD(TAG, "Event dispatched from event loop base=%s, event_id=%" PRIi32, base, event_id);
esp_mqtt_event_handle_t event = event_data;
esp_mqtt_client_handle_t client = event->client;
int msg_id;
switch ((esp_mqtt_event_id_t)event_id) {
case MQTT_EVENT_CONNECTED:
ESP_LOGI(TAG, "MQTT_EVENT_CONNECTED");
msg_id = esp_mqtt_client_subscribe(client, "/topic/qos0", 0);
ESP_LOGI(TAG, "sent subscribe successful, msg_id=%d", msg_id);
msg_id = esp_mqtt_client_subscribe(client, "/topic/qos1", 1);
ESP_LOGI(TAG, "sent subscribe successful, msg_id=%d", msg_id);
msg_id = esp_mqtt_client_unsubscribe(client, "/topic/qos1");
ESP_LOGI(TAG, "sent unsubscribe successful, msg_id=%d", msg_id);
break;
case MQTT_EVENT_DISCONNECTED:
ESP_LOGI(TAG, "MQTT_EVENT_DISCONNECTED");
break;
case MQTT_EVENT_SUBSCRIBED:
ESP_LOGI(TAG, "MQTT_EVENT_SUBSCRIBED, msg_id=%d, return code=0x%02x ", event->msg_id, (uint8_t)*event->data);
msg_id = esp_mqtt_client_publish(client, "/topic/qos0", "data", 0, 0, 0);
ESP_LOGI(TAG, "sent publish successful, msg_id=%d", msg_id);
break;
case MQTT_EVENT_UNSUBSCRIBED:
ESP_LOGI(TAG, "MQTT_EVENT_UNSUBSCRIBED, msg_id=%d", event->msg_id);
break;
case MQTT_EVENT_PUBLISHED:
ESP_LOGI(TAG, "MQTT_EVENT_PUBLISHED, msg_id=%d", event->msg_id);
break;
case MQTT_EVENT_DATA:
ESP_LOGI(TAG, "MQTT_EVENT_DATA");
printf("TOPIC=%.*s\r\n", event->topic_len, event->topic);
printf("DATA=%.*s\r\n", event->data_len, event->data);
if (strncmp(event->data, "send binary please", event->data_len) == 0) {
ESP_LOGI(TAG, "Sending the binary");
send_binary(client);
}
break;
case MQTT_EVENT_ERROR:
ESP_LOGI(TAG, "MQTT_EVENT_ERROR");
if (event->error_handle->error_type == MQTT_ERROR_TYPE_TCP_TRANSPORT) {
ESP_LOGI(TAG, "Last error code reported from esp-tls: 0x%x", event->error_handle->esp_tls_last_esp_err);
ESP_LOGI(TAG, "Last tls stack error number: 0x%x", event->error_handle->esp_tls_stack_err);
ESP_LOGI(TAG, "Last captured errno : %d (%s)", event->error_handle->esp_transport_sock_errno,
strerror(event->error_handle->esp_transport_sock_errno));
} else if (event->error_handle->error_type == MQTT_ERROR_TYPE_CONNECTION_REFUSED) {
ESP_LOGI(TAG, "Connection refused error: 0x%x", event->error_handle->connect_return_code);
} else {
ESP_LOGW(TAG, "Unknown error type: 0x%x", event->error_handle->error_type);
}
break;
default:
ESP_LOGI(TAG, "Other event id:%d", event->event_id);
break;
}
}
static void mqtt_app_start(void)
{
const esp_mqtt_client_config_t mqtt_cfg = {
.broker = {
.address.uri = CONFIG_BROKER_URI,
.verification.certificate = (const char *)mqtt_eclipseprojects_io_pem_start
},
};
ESP_LOGI(TAG, "[APP] Free memory: %" PRIu32 " bytes", esp_get_free_heap_size());
esp_mqtt_client_handle_t client = esp_mqtt_client_init(&mqtt_cfg);
/* The last argument may be used to pass data to the event handler, in this example mqtt_event_handler */
esp_mqtt_client_register_event(client, ESP_EVENT_ANY_ID, mqtt_event_handler, NULL);
esp_mqtt_client_start(client);
}
void app_main(void)
{
ESP_LOGI(TAG, "[APP] Startup..");
ESP_LOGI(TAG, "[APP] Free memory: %" PRIu32 " bytes", esp_get_free_heap_size());
ESP_LOGI(TAG, "[APP] IDF version: %s", esp_get_idf_version());
esp_log_level_set("*", ESP_LOG_INFO);
esp_log_level_set("esp-tls", ESP_LOG_VERBOSE);
esp_log_level_set("mqtt_client", ESP_LOG_VERBOSE);
esp_log_level_set("mqtt_example", ESP_LOG_VERBOSE);
esp_log_level_set("transport_base", ESP_LOG_VERBOSE);
esp_log_level_set("transport", ESP_LOG_VERBOSE);
esp_log_level_set("outbox", ESP_LOG_VERBOSE);
ESP_ERROR_CHECK(nvs_flash_init());
ESP_ERROR_CHECK(esp_netif_init());
ESP_ERROR_CHECK(esp_event_loop_create_default());
/* This helper function configures Wi-Fi or Ethernet, as selected in menuconfig.
* Read "Establishing Wi-Fi or Ethernet Connection" section in
* examples/protocols/README.md for more information about this function.
*/
ESP_ERROR_CHECK(example_connect());
mqtt_app_start();
}

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@@ -1,5 +0,0 @@
dependencies:
espressif/mqtt:
version: '*'
protocol_examples_common:
path: ${IDF_PATH}/examples/common_components/protocol_examples_common

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@@ -1,30 +0,0 @@
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

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@@ -1,135 +0,0 @@
# SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
# SPDX-License-Identifier: Unlicense OR CC0-1.0
import logging
import os
import re
import ssl
import sys
from threading import Event
from threading import Thread
import paho.mqtt.client as mqtt
import pexpect
import pytest
from pytest_embedded import Dut
from pytest_embedded_idf.utils import idf_parametrize
event_client_connected = Event()
event_stop_client = Event()
event_client_received_correct = Event()
event_client_received_binary = Event()
message_log = ''
# The callback for when the client receives a CONNACK response from the server.
def on_connect(client, userdata, flags, rc): # type: (mqtt.Client, str, bool, str) -> None
_ = (userdata, flags)
print('Connected with result code ' + str(rc))
event_client_connected.set()
client.subscribe('/topic/qos0')
def mqtt_client_task(client): # type: (mqtt.Client) -> None
while not event_stop_client.is_set():
client.loop()
# The callback for when a PUBLISH message is received from the server.
def on_message(client, userdata, msg): # type: (mqtt.Client, tuple, mqtt.client.MQTTMessage) -> None
global message_log
global event_client_received_correct
global event_client_received_binary
if msg.topic == '/topic/binary':
binary, bin_size = userdata
print('Receiving binary from esp and comparing with {}, size {}...'.format(binary, bin_size))
with open(binary, 'rb') as f:
bin = f.read()
if bin[:bin_size] == msg.payload[:bin_size]:
print('...matches!')
event_client_received_binary.set()
return
recv_binary = binary + '.received'
with open(recv_binary, 'w', encoding='utf-8') as fw:
fw.write(msg.payload)
raise ValueError(
'Received binary (saved as: {}) does not match the original file: {}'.format(recv_binary, binary)
)
payload = msg.payload.decode()
if not event_client_received_correct.is_set() and payload == 'data':
client.subscribe('/topic/binary')
client.publish('/topic/qos0', 'send binary please')
if msg.topic == '/topic/qos0' and payload == 'data':
event_client_received_correct.set()
message_log += 'Received data:' + msg.topic + ' ' + payload + '\n'
@pytest.mark.ethernet
@idf_parametrize('target', ['esp32'], indirect=['target'])
def test_examples_protocol_mqtt_ssl(dut): # type: (Dut) -> None
broker_url = ''
broker_port = 0
"""
steps:
1. join AP and connects to ssl broker
2. Test connects a client to the same broker
3. Test evaluates python client received correct qos0 message
4. Test ESP32 client received correct qos0 message
5. Test python client receives binary data from running partition and compares it with the binary
"""
binary_file = os.path.join(dut.app.binary_path, 'mqtt_ssl.bin')
bin_size = os.path.getsize(binary_file)
logging.info('[Performance][mqtt_ssl_bin_size]: %s KB', bin_size // 1024)
# Look for host:port in sdkconfig
try:
value = re.search(r'\:\/\/([^:]+)\:([0-9]+)', dut.app.sdkconfig.get('BROKER_URI'))
assert value is not None
broker_url = value.group(1)
broker_port = int(value.group(2))
bin_size = min(int(dut.app.sdkconfig.get('BROKER_BIN_SIZE_TO_SEND')), bin_size)
except Exception:
print('ENV_TEST_FAILURE: Cannot find broker url in sdkconfig')
raise
client = None
# 1. Test connects to a broker
try:
client = mqtt.Client()
client.on_connect = on_connect
client.on_message = on_message
client.user_data_set((binary_file, bin_size))
client.tls_set(None, None, None, cert_reqs=ssl.CERT_NONE, tls_version=ssl.PROTOCOL_TLSv1_2, ciphers=None)
client.tls_insecure_set(True)
print('Connecting...')
client.connect(broker_url, broker_port, 60)
except Exception:
print(
'ENV_TEST_FAILURE: Unexpected error while connecting to broker {}: {}:'.format(
broker_url, sys.exc_info()[0]
)
)
raise
# Starting a py-client in a separate thread
thread1 = Thread(target=mqtt_client_task, args=(client,))
thread1.start()
try:
print('Connecting py-client to broker {}:{}...'.format(broker_url, broker_port))
if not event_client_connected.wait(timeout=30):
raise ValueError('ENV_TEST_FAILURE: Test script cannot connect to broker: {}'.format(broker_url))
try:
ip_address = dut.expect(r'IPv4 address: (\d+\.\d+\.\d+\.\d+)[^\d]', timeout=30)[0]
print('Connected to AP with IP: {}'.format(ip_address))
except pexpect.TIMEOUT:
print('ENV_TEST_FAILURE: Cannot connect to AP')
raise
print('Checking py-client received msg published from esp...')
if not event_client_received_correct.wait(timeout=30):
raise ValueError('Wrong data received, msg log: {}'.format(message_log))
print('Checking esp-client received msg published from py-client...')
dut.expect(r'DATA=send binary please', timeout=30)
print('Receiving binary data from running partition...')
if not event_client_received_binary.wait(timeout=30):
raise ValueError('Binary not received within timeout')
finally:
event_stop_client.set()
thread1.join()

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@@ -1,22 +0,0 @@
CONFIG_BROKER_URI="mqtts://${EXAMPLE_MQTT_BROKER_SSL}"
CONFIG_BROKER_CERTIFICATE_OVERRIDE="${EXAMPLE_MQTT_BROKER_CERTIFICATE}"
CONFIG_MQTT_USE_CUSTOM_CONFIG=y
CONFIG_MQTT_TCP_DEFAULT_PORT=1883
CONFIG_MQTT_SSL_DEFAULT_PORT=8883
CONFIG_MQTT_WS_DEFAULT_PORT=80
CONFIG_MQTT_WSS_DEFAULT_PORT=443
CONFIG_MQTT_BUFFER_SIZE=16384
CONFIG_MQTT_TASK_STACK_SIZE=6144
CONFIG_MBEDTLS_ASYMMETRIC_CONTENT_LEN=y
CONFIG_MBEDTLS_SSL_IN_CONTENT_LEN=16384
CONFIG_MBEDTLS_SSL_OUT_CONTENT_LEN=4096
CONFIG_EXAMPLE_CONNECT_ETHERNET=y
CONFIG_EXAMPLE_CONNECT_WIFI=n
CONFIG_EXAMPLE_USE_INTERNAL_ETHERNET=y
CONFIG_EXAMPLE_ETH_PHY_IP101=y
CONFIG_EXAMPLE_ETH_MDC_GPIO=23
CONFIG_EXAMPLE_ETH_MDIO_GPIO=18
CONFIG_EXAMPLE_ETH_PHY_RST_GPIO=5
CONFIG_EXAMPLE_ETH_PHY_ADDR=1
CONFIG_EXAMPLE_CONNECT_IPV6=y
CONFIG_LWIP_CHECK_THREAD_SAFETY=y

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@@ -1,18 +0,0 @@
# The following four lines of boilerplate have to be in your project's CMakeLists
# in this exact order for cmake to work correctly
cmake_minimum_required(VERSION 3.16)
include($ENV{IDF_PATH}/tools/cmake/project.cmake)
# "Trim" the build. Include the minimal set of components, main, and anything it depends on.
idf_build_set_property(MINIMAL_BUILD ON)
project(mqtt_ssl_ds)
# Flash the custom partition named `esp_secure_cert`.
set(partition esp_secure_cert)
idf_build_get_property(project_dir PROJECT_DIR)
set(image_file ${project_dir}/esp_secure_cert_data/${partition}.bin)
partition_table_get_partition_info(offset "--partition-name ${partition}" "offset")
esptool_py_flash_target_image(flash "${partition}" "${offset}" "${image_file}")
target_add_binary_data(${CMAKE_PROJECT_NAME}.elf "main/mosquitto.org.crt" TEXT)

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@@ -1,105 +0,0 @@
| Supported Targets | ESP32-C3 | ESP32-C5 | ESP32-C6 | ESP32-H2 | ESP32-P4 | ESP32-S2 | ESP32-S3 |
| ----------------- | -------- | -------- | -------- | -------- | -------- | -------- | -------- |
# ESP-MQTT SSL Mutual Authentication with Digital Signature
(See the README.md file in the upper level 'examples' directory for more information about examples.)
Espressif's ESP32-S2, ESP32-S3, ESP32-C3, ESP32-C6, ESP32-H2 and ESP32-P4 MCU have a built-in Digital Signature (DS) Peripheral, which provides hardware acceleration for RSA signature. More details can be found at [Digital Signature with ESP-TLS](https://docs.espressif.com/projects/esp-idf/en/latest/esp32s2/api-reference/protocols/esp_tls.html#digital-signature-with-esp-tls).
This example connects to the broker test.mosquitto.org using ssl transport with client certificate(RSA) and as a demonstration subscribes/unsubscribes and sends a message on certain topic.The RSA signature operation required in the ssl connection is performed with help of the Digital Signature (DS) peripheral.
(Please note that the public broker is maintained by the community so may not be always available, for details please visit http://test.mosquitto.org)
It uses ESP-MQTT library which implements mqtt client to connect to mqtt broker.
## How to use example
### Hardware Required
This example can be executed on any of the supported ESP32 family board (which has a built-in DS peripheral), the only required interface is WiFi/Ethernet and connection to internet.
### Configure the project
#### 1) Selecting the target
Please select the supported target with the following command:
```
idf.py set-target /* target */
```
More details can be found at [Selecting the target](https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-guides/build-system.html#selecting-the-target).
#### 2) Generate your client key and certificate
Navigate to the main directory
```
cd main
```
Generate a client key and a CSR. When you are generating the CSR, do not use the default values. At a minimum, the CSR must include the Country, Organisation and Common Name fields.
```
openssl genrsa -out client.key
openssl req -out client.csr -key client.key -new
```
Paste the generated CSR in the [Mosquitto test certificate signer](https://test.mosquitto.org/ssl/index.php), click Submit and downloaded the `client.crt`. This `client.crt` file shall be used as the device certificate.
#### 3) Configure the DS peripheral
* i) Install the [esp_secure_cert configuration utility](https://github.com/espressif/esp_secure_cert_mgr/tree/main/tools#esp_secure_cert-configuration-tool) with following command:
```
pip install esp-secure-cert-tool
```
* ii) The DS peripheral can be configured by executing the following command:
```
configure_esp_secure_cert.py -p /* Serial port */ --device-cert /* Device cert */ --private-key /* RSA priv key */ --target_chip /* target chip */ --configure_ds --skip_flash
```
This command shall generate a partition named `esp_secure_cert.bin` in the `esp_secure_cert_data` directory. This partition would be aumatically detected by the build system and flashed at appropriate offset when `idf.py flash` command is used. For this process, the command must be executed in the current folder only.
In the command USB COM port is nothing but the serial port to which the ESP chip is connected. see
[check serial port](https://docs.espressif.com/projects/esp-idf/en/latest/esp32/get-started/establish-serial-connection.html#check-port-on-windows) for more details.
RSA private key is nothing but the client private key ( RSA ) generated in Step 2.
> Note: More details about the `esp-secure-cert-tool` utility can be found [here](https://github.com/espressif/esp_secure_cert_mgr/tree/main/tools).
#### 4) Connection configuration
* Open the project configuration menu (`idf.py menuconfig`)
* Configure Wi-Fi or Ethernet under "Example Connection Configuration" menu. See "Establishing Wi-Fi or Ethernet Connection" section in [examples/protocols/README.md](../../README.md) for more details.
### Build and Flash
Build the project and flash it to the board, then run monitor tool to view serial output:
```
idf.py -p PORT flash monitor
```
(To exit the serial monitor, type ``Ctrl-]``.)
See the Getting Started Guide for full steps to configure and use ESP-IDF to build projects.
## Example Output
```
I (3714) event: sta ip: 192.168.0.139, mask: 255.255.255.0, gw: 192.168.0.2
I (3714) system_api: Base MAC address is not set, read default base MAC address from BLK0 of EFUSE
I (3964) MQTT_CLIENT: Sending MQTT CONNECT message, type: 1, id: 0000
I (4164) MQTTS_EXAMPLE: MQTT_EVENT_CONNECTED
I (4174) MQTTS_EXAMPLE: sent publish successful, msg_id=41464
I (4174) MQTTS_EXAMPLE: sent subscribe successful, msg_id=17886
I (4174) MQTTS_EXAMPLE: sent subscribe successful, msg_id=42970
I (4184) MQTTS_EXAMPLE: sent unsubscribe successful, msg_id=50241
I (4314) MQTTS_EXAMPLE: MQTT_EVENT_PUBLISHED, msg_id=41464
I (4484) MQTTS_EXAMPLE: MQTT_EVENT_SUBSCRIBED, msg_id=17886
I (4484) MQTTS_EXAMPLE: sent publish successful, msg_id=0
I (4684) MQTTS_EXAMPLE: MQTT_EVENT_SUBSCRIBED, msg_id=42970
I (4684) MQTTS_EXAMPLE: sent publish successful, msg_id=0
I (4884) MQTT_CLIENT: deliver_publish, message_length_read=19, message_length=19
I (4884) MQTTS_EXAMPLE: MQTT_EVENT_DATA
TOPIC=/topic/qos0
DATA=data
I (5194) MQTT_CLIENT: deliver_publish, message_length_read=19, message_length=19
I (5194) MQTTS_EXAMPLE: MQTT_EVENT_DATA
TOPIC=/topic/qos0
DATA=data
```

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@@ -1,3 +0,0 @@
idf_component_register(SRCS "app_main.c"
PRIV_REQUIRES mqtt esp_netif
INCLUDE_DIRS ".")

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@@ -1,156 +0,0 @@
/* MQTT Mutual Authentication Example
This example code is in the Public Domain (or CC0 licensed, at your option.)
Unless required by applicable law or agreed to in writing, this
software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
CONDITIONS OF ANY KIND, either express or implied.
*/
#include <stdio.h>
#include <stdint.h>
#include <stddef.h>
#include <string.h>
#include "esp_system.h"
#include "nvs_flash.h"
#include "esp_event.h"
#include "esp_netif.h"
#include "protocol_examples_common.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/semphr.h"
#include "freertos/queue.h"
#include "lwip/sockets.h"
#include "lwip/dns.h"
#include "lwip/netdb.h"
#include "esp_log.h"
#include "mqtt_client.h"
#include "rsa_sign_alt.h"
#include "esp_secure_cert_read.h"
static const char *TAG = "mqtts_example";
extern const uint8_t server_cert_pem_start[] asm("_binary_mosquitto_org_crt_start");
extern const uint8_t server_cert_pem_end[] asm("_binary_mosquitto_org_crt_end");
/*
* @brief Event handler registered to receive MQTT events
*
* This function is called by the MQTT client event loop.
*
* @param handler_args user data registered to the event.
* @param base Event base for the handler(always MQTT Base in this example).
* @param event_id The id for the received event.
* @param event_data The data for the event, esp_mqtt_event_handle_t.
*/
static void mqtt_event_handler(void *handler_args, esp_event_base_t base, int32_t event_id, void *event_data)
{
ESP_LOGD(TAG, "Event dispatched from event loop base=%s, event_id=%" PRIi32, base, event_id);
esp_mqtt_event_handle_t event = event_data;
esp_mqtt_client_handle_t client = event->client;
int msg_id;
// your_context_t *context = event->context;
switch ((esp_mqtt_event_id_t)event_id) {
case MQTT_EVENT_CONNECTED:
ESP_LOGI(TAG, "MQTT_EVENT_CONNECTED");
msg_id = esp_mqtt_client_subscribe(client, "/topic/qos0", 0);
ESP_LOGI(TAG, "sent subscribe successful, msg_id=%d", msg_id);
msg_id = esp_mqtt_client_subscribe(client, "/topic/qos1", 1);
ESP_LOGI(TAG, "sent subscribe successful, msg_id=%d", msg_id);
msg_id = esp_mqtt_client_unsubscribe(client, "/topic/qos1");
ESP_LOGI(TAG, "sent unsubscribe successful, msg_id=%d", msg_id);
break;
case MQTT_EVENT_DISCONNECTED:
ESP_LOGI(TAG, "MQTT_EVENT_DISCONNECTED");
break;
case MQTT_EVENT_SUBSCRIBED:
ESP_LOGI(TAG, "MQTT_EVENT_SUBSCRIBED, msg_id=%d, return code=0x%02x ", event->msg_id, (uint8_t)*event->data);
msg_id = esp_mqtt_client_publish(client, "/topic/qos0", "data", 0, 0, 0);
ESP_LOGI(TAG, "sent publish successful, msg_id=%d", msg_id);
break;
case MQTT_EVENT_UNSUBSCRIBED:
ESP_LOGI(TAG, "MQTT_EVENT_UNSUBSCRIBED, msg_id=%d", event->msg_id);
break;
case MQTT_EVENT_PUBLISHED:
ESP_LOGI(TAG, "MQTT_EVENT_PUBLISHED, msg_id=%d", event->msg_id);
break;
case MQTT_EVENT_DATA:
ESP_LOGI(TAG, "MQTT_EVENT_DATA");
printf("TOPIC=%.*s\r\n", event->topic_len, event->topic);
printf("DATA=%.*s\r\n", event->data_len, event->data);
break;
case MQTT_EVENT_ERROR:
ESP_LOGI(TAG, "MQTT_EVENT_ERROR");
break;
default:
ESP_LOGI(TAG, "Other event id:%d", event->event_id);
break;
}
}
static void mqtt_app_start(void)
{
/* The context is used by the DS peripheral, should not be freed */
esp_ds_data_ctx_t *ds_data = esp_secure_cert_get_ds_ctx();
if (ds_data == NULL) {
ESP_LOGE(TAG, "Error in reading DS data from NVS");
vTaskDelete(NULL);
}
char *device_cert = NULL;
esp_err_t ret;
uint32_t len;
ret = esp_secure_cert_get_device_cert(&device_cert, &len);
if (ret != ESP_OK) {
ESP_LOGE(TAG, "Failed to obtain the device certificate");
vTaskDelete(NULL);
}
const esp_mqtt_client_config_t mqtt_cfg = {
.broker = {
.address.uri = "mqtts://test.mosquitto.org:8884",
.verification.certificate = (const char *)server_cert_pem_start,
},
.credentials = {
.authentication = {
.certificate = (const char *)device_cert,
.key = NULL,
.ds_data = (void *)ds_data
},
},
};
ESP_LOGI(TAG, "[APP] Free memory: %" PRIu32 " bytes", esp_get_free_heap_size());
esp_mqtt_client_handle_t client = esp_mqtt_client_init(&mqtt_cfg);
esp_mqtt_client_register_event(client, ESP_EVENT_ANY_ID, mqtt_event_handler, NULL);
esp_mqtt_client_start(client);
}
void app_main(void)
{
ESP_LOGI(TAG, "[APP] Startup..");
ESP_LOGI(TAG, "[APP] Free memory: %" PRIu32 " bytes", esp_get_free_heap_size());
ESP_LOGI(TAG, "[APP] IDF version: %s", esp_get_idf_version());
esp_log_level_set("*", ESP_LOG_INFO);
esp_log_level_set("mqtt_client", ESP_LOG_VERBOSE);
esp_log_level_set("transport_base", ESP_LOG_VERBOSE);
esp_log_level_set("transport", ESP_LOG_VERBOSE);
esp_log_level_set("outbox", ESP_LOG_VERBOSE);
ESP_ERROR_CHECK(nvs_flash_init());
ESP_ERROR_CHECK(esp_netif_init());
ESP_ERROR_CHECK(esp_event_loop_create_default());
/* This helper function configures Wi-Fi or Ethernet, as selected in menuconfig.
* Read "Establishing Wi-Fi or Ethernet Connection" section in
* examples/protocols/README.md for more information about this function.
*/
ESP_ERROR_CHECK(example_connect());
mqtt_app_start();
}

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@@ -1,6 +0,0 @@
dependencies:
espressif/esp_secure_cert_mgr: ^2.0.2
espressif/mqtt:
version: '*'
protocol_examples_common:
path: ${IDF_PATH}/examples/common_components/protocol_examples_common

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@@ -1,25 +0,0 @@
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
---

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@@ -1,6 +0,0 @@
# ESP-IDF Partition Table
# Name, Type, SubType, Offset, Size, Flags
esp_secure_cert,0x3F,,,0x2000,
nvs,data,nvs,,24K,
phy_init,data,phy,,4K,
factory,app,factory,0x20000,1500K,
1 # ESP-IDF Partition Table
2 # Name, Type, SubType, Offset, Size, Flags
3 esp_secure_cert,0x3F,,,0x2000,
4 nvs,data,nvs,,24K,
5 phy_init,data,phy,,4K,
6 factory,app,factory,0x20000,1500K,

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@@ -1,7 +0,0 @@
CONFIG_PARTITION_TABLE_CUSTOM=y
# Setting partition table offset to 0xC000 would make the address of
# `esp_secure_cert` partition as 0xD000 (comes next in the sequence).
# Modules that are programmed with Espressif Secure Pre Provisioining service
# uses this offset for `esp_secure_cert` and hence this change aligns this example
# to work on those modules.
CONFIG_PARTITION_TABLE_OFFSET=0xC000

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@@ -1,2 +0,0 @@
CONFIG_EXAMPLE_CONNECT_WIFI=n
CONFIG_EXAMPLE_CONNECT_ETHERNET=y

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@@ -1,13 +0,0 @@
# The following four lines of boilerplate have to be in your project's CMakeLists
# in this exact order for cmake to work correctly
cmake_minimum_required(VERSION 3.16)
include($ENV{IDF_PATH}/tools/cmake/project.cmake)
# "Trim" the build. Include the minimal set of components, main, and anything it depends on.
idf_build_set_property(MINIMAL_BUILD ON)
project(mqtt_ssl_mutual_auth)
target_add_binary_data(${CMAKE_PROJECT_NAME}.elf "main/client.crt" TEXT)
target_add_binary_data(${CMAKE_PROJECT_NAME}.elf "main/client.key" TEXT)
target_add_binary_data(${CMAKE_PROJECT_NAME}.elf "main/mosquitto.org.crt" TEXT)

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@@ -1,82 +0,0 @@
| Supported Targets | ESP32 | ESP32-C2 | ESP32-C3 | ESP32-C5 | ESP32-C6 | ESP32-C61 | ESP32-H2 | ESP32-P4 | ESP32-S2 | ESP32-S3 |
| ----------------- | ----- | -------- | -------- | -------- | -------- | --------- | -------- | -------- | -------- | -------- |
# ESP-MQTT SSL Sample application (mutual authentication)
(See the README.md file in the upper level 'examples' directory for more information about examples.)
This example connects to the broker test.mosquitto.org using ssl transport with client certificate and as a demonstration subscribes/unsubscribes and send a message on certain topic.
(Please note that the public broker is maintained by the community so may not be always available, for details please visit http://test.mosquitto.org)
It uses ESP-MQTT library which implements mqtt client to connect to mqtt broker.
## How to use example
### Hardware Required
This example can be executed on any ESP32 board, the only required interface is WiFi and connection to internet.
### Configure the project
* Open the project configuration menu (`idf.py menuconfig`)
* Configure Wi-Fi or Ethernet under "Example Connection Configuration" menu. See "Establishing Wi-Fi or Ethernet Connection" section in [examples/protocols/README.md](../../README.md) for more details.
* Generate your client keys and certificate
Navigate to the main directory
```
cd main
```
Generate a client key and a CSR. When you are generating the CSR, do not use the default values. At a minimum, the CSR must include the Country, Organisation and Common Name fields.
```
openssl genrsa -out client.key
openssl req -out client.csr -key client.key -new
```
Paste the generated CSR in the [Mosquitto test certificate signer](https://test.mosquitto.org/ssl/index.php), click Submit and copy the downloaded `client.crt` in the `main` directory.
Please note, that the supplied files `client.crt` and `client.key` in the `main` directory are only placeholders for your client certificate and key (i.e. the example "as is" would compile but would not connect to the broker)
The server certificate `mosquitto.org.crt` can be downloaded in pem format from [mosquitto.org.crt](https://test.mosquitto.org/ssl/mosquitto.org.crt).
### Build and Flash
Build the project and flash it to the board, then run monitor tool to view serial output:
```
idf.py -p PORT flash monitor
```
(To exit the serial monitor, type ``Ctrl-]``.)
See the Getting Started Guide for full steps to configure and use ESP-IDF to build projects.
## Example Output
```
I (3714) event: sta ip: 192.168.0.139, mask: 255.255.255.0, gw: 192.168.0.2
I (3714) system_api: Base MAC address is not set, read default base MAC address from BLK0 of EFUSE
I (3964) MQTT_CLIENT: Sending MQTT CONNECT message, type: 1, id: 0000
I (4164) MQTTS_EXAMPLE: MQTT_EVENT_CONNECTED
I (4174) MQTTS_EXAMPLE: sent publish successful, msg_id=41464
I (4174) MQTTS_EXAMPLE: sent subscribe successful, msg_id=17886
I (4174) MQTTS_EXAMPLE: sent subscribe successful, msg_id=42970
I (4184) MQTTS_EXAMPLE: sent unsubscribe successful, msg_id=50241
I (4314) MQTTS_EXAMPLE: MQTT_EVENT_PUBLISHED, msg_id=41464
I (4484) MQTTS_EXAMPLE: MQTT_EVENT_SUBSCRIBED, msg_id=17886
I (4484) MQTTS_EXAMPLE: sent publish successful, msg_id=0
I (4684) MQTTS_EXAMPLE: MQTT_EVENT_SUBSCRIBED, msg_id=42970
I (4684) MQTTS_EXAMPLE: sent publish successful, msg_id=0
I (4884) MQTT_CLIENT: deliver_publish, message_length_read=19, message_length=19
I (4884) MQTTS_EXAMPLE: MQTT_EVENT_DATA
TOPIC=/topic/qos0
DATA=data
I (5194) MQTT_CLIENT: deliver_publish, message_length_read=19, message_length=19
I (5194) MQTTS_EXAMPLE: MQTT_EVENT_DATA
TOPIC=/topic/qos0
DATA=data
```

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@@ -1,3 +0,0 @@
idf_component_register(SRCS "app_main.c"
PRIV_REQUIRES mqtt esp_wifi nvs_flash
INCLUDE_DIRS ".")

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@@ -1,155 +0,0 @@
/* MQTT Mutual Authentication Example
This example code is in the Public Domain (or CC0 licensed, at your option.)
Unless required by applicable law or agreed to in writing, this
software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
CONDITIONS OF ANY KIND, either express or implied.
*/
#include <stdio.h>
#include <stdint.h>
#include <stddef.h>
#include <string.h>
#include "esp_wifi.h"
#include "esp_system.h"
#include "nvs_flash.h"
#include "esp_event.h"
#include "esp_netif.h"
#include "protocol_examples_common.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/semphr.h"
#include "freertos/queue.h"
#include "lwip/sockets.h"
#include "lwip/dns.h"
#include "lwip/netdb.h"
#include "esp_log.h"
#include "mqtt_client.h"
static const char *TAG = "mqtts_example";
extern const uint8_t client_cert_pem_start[] asm("_binary_client_crt_start");
extern const uint8_t client_cert_pem_end[] asm("_binary_client_crt_end");
extern const uint8_t client_key_pem_start[] asm("_binary_client_key_start");
extern const uint8_t client_key_pem_end[] asm("_binary_client_key_end");
extern const uint8_t server_cert_pem_start[] asm("_binary_mosquitto_org_crt_start");
extern const uint8_t server_cert_pem_end[] asm("_binary_mosquitto_org_crt_end");
static void log_error_if_nonzero(const char *message, int error_code)
{
if (error_code != 0) {
ESP_LOGE(TAG, "Last error %s: 0x%x", message, error_code);
}
}
/*
* @brief Event handler registered to receive MQTT events
*
* This function is called by the MQTT client event loop.
*
* @param handler_args user data registered to the event.
* @param base Event base for the handler(always MQTT Base in this example).
* @param event_id The id for the received event.
* @param event_data The data for the event, esp_mqtt_event_handle_t.
*/
static void mqtt_event_handler(void *handler_args, esp_event_base_t base, int32_t event_id, void *event_data)
{
ESP_LOGD(TAG, "Event dispatched from event loop base=%s, event_id=%" PRIi32, base, event_id);
esp_mqtt_event_handle_t event = event_data;
esp_mqtt_client_handle_t client = event->client;
int msg_id;
switch ((esp_mqtt_event_id_t)event_id) {
case MQTT_EVENT_CONNECTED:
ESP_LOGI(TAG, "MQTT_EVENT_CONNECTED");
msg_id = esp_mqtt_client_subscribe(client, "/topic/qos0", 0);
ESP_LOGI(TAG, "sent subscribe successful, msg_id=%d", msg_id);
msg_id = esp_mqtt_client_subscribe(client, "/topic/qos1", 1);
ESP_LOGI(TAG, "sent subscribe successful, msg_id=%d", msg_id);
msg_id = esp_mqtt_client_unsubscribe(client, "/topic/qos1");
ESP_LOGI(TAG, "sent unsubscribe successful, msg_id=%d", msg_id);
break;
case MQTT_EVENT_DISCONNECTED:
ESP_LOGI(TAG, "MQTT_EVENT_DISCONNECTED");
break;
case MQTT_EVENT_SUBSCRIBED:
ESP_LOGI(TAG, "MQTT_EVENT_SUBSCRIBED, msg_id=%d, return code=0x%02x ", event->msg_id, (uint8_t)*event->data);
msg_id = esp_mqtt_client_publish(client, "/topic/qos0", "data", 0, 0, 0);
ESP_LOGI(TAG, "sent publish successful, msg_id=%d", msg_id);
break;
case MQTT_EVENT_UNSUBSCRIBED:
ESP_LOGI(TAG, "MQTT_EVENT_UNSUBSCRIBED, msg_id=%d", event->msg_id);
break;
case MQTT_EVENT_PUBLISHED:
ESP_LOGI(TAG, "MQTT_EVENT_PUBLISHED, msg_id=%d", event->msg_id);
break;
case MQTT_EVENT_DATA:
ESP_LOGI(TAG, "MQTT_EVENT_DATA");
printf("TOPIC=%.*s\r\n", event->topic_len, event->topic);
printf("DATA=%.*s\r\n", event->data_len, event->data);
break;
case MQTT_EVENT_ERROR:
ESP_LOGI(TAG, "MQTT_EVENT_ERROR");
if (event->error_handle->error_type == MQTT_ERROR_TYPE_TCP_TRANSPORT) {
log_error_if_nonzero("reported from esp-tls", event->error_handle->esp_tls_last_esp_err);
log_error_if_nonzero("reported from tls stack", event->error_handle->esp_tls_stack_err);
log_error_if_nonzero("captured as transport's socket errno", event->error_handle->esp_transport_sock_errno);
ESP_LOGI(TAG, "Last errno string (%s)", strerror(event->error_handle->esp_transport_sock_errno));
}
break;
default:
ESP_LOGI(TAG, "Other event id:%d", event->event_id);
break;
}
}
static void mqtt_app_start(void)
{
const esp_mqtt_client_config_t mqtt_cfg = {
.broker.address.uri = "mqtts://test.mosquitto.org:8884",
.broker.verification.certificate = (const char *)server_cert_pem_start,
.credentials = {
.authentication = {
.certificate = (const char *)client_cert_pem_start,
.key = (const char *)client_key_pem_start,
},
}
};
ESP_LOGI(TAG, "[APP] Free memory: %" PRIu32 " bytes", esp_get_free_heap_size());
esp_mqtt_client_handle_t client = esp_mqtt_client_init(&mqtt_cfg);
/* The last argument may be used to pass data to the event handler, in this example mqtt_event_handler */
esp_mqtt_client_register_event(client, ESP_EVENT_ANY_ID, mqtt_event_handler, NULL);
esp_mqtt_client_start(client);
}
void app_main(void)
{
ESP_LOGI(TAG, "[APP] Startup..");
ESP_LOGI(TAG, "[APP] Free memory: %" PRIu32 " bytes", esp_get_free_heap_size());
ESP_LOGI(TAG, "[APP] IDF version: %s", esp_get_idf_version());
esp_log_level_set("*", ESP_LOG_INFO);
esp_log_level_set("mqtt_client", ESP_LOG_VERBOSE);
esp_log_level_set("transport_base", ESP_LOG_VERBOSE);
esp_log_level_set("transport", ESP_LOG_VERBOSE);
esp_log_level_set("outbox", ESP_LOG_VERBOSE);
ESP_ERROR_CHECK(nvs_flash_init());
ESP_ERROR_CHECK(esp_netif_init());
ESP_ERROR_CHECK(esp_event_loop_create_default());
/* This helper function configures Wi-Fi or Ethernet, as selected in menuconfig.
* Read "Establishing Wi-Fi or Ethernet Connection" section in
* examples/protocols/README.md for more information about this function.
*/
ESP_ERROR_CHECK(example_connect());
mqtt_app_start();
}

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@@ -1 +0,0 @@
Please paste your client certificate here (follow instructions in README.md)

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@@ -1 +0,0 @@
Please paste here your client key (follow instructions in README.md)

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@@ -1,5 +0,0 @@
dependencies:
espressif/mqtt:
version: '*'
protocol_examples_common:
path: ${IDF_PATH}/examples/common_components/protocol_examples_common

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@@ -1,24 +0,0 @@
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

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# Empty file to trigger idf-ci to use esp32c6 specific file.

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# The following four lines of boilerplate have to be in your project's CMakeLists
# in this exact order for cmake to work correctly
cmake_minimum_required(VERSION 3.16)
include($ENV{IDF_PATH}/tools/cmake/project.cmake)
# "Trim" the build. Include the minimal set of components, main, and anything it depends on.
idf_build_set_property(MINIMAL_BUILD ON)
project(mqtt_ssl_psk)

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@@ -1,78 +0,0 @@
| Supported Targets | ESP32 | ESP32-C2 | ESP32-C3 | ESP32-C5 | ESP32-C6 | ESP32-C61 | ESP32-H2 | ESP32-P4 | ESP32-S2 | ESP32-S3 |
| ----------------- | ----- | -------- | -------- | -------- | -------- | --------- | -------- | -------- | -------- | -------- |
# ESP-MQTT SSL example with PSK verification
(See the README.md file in the upper level 'examples' directory for more information about examples.)
This example connects to a local broker configured to PSK authentication
## How to use example
### Hardware Required
This example can be executed on any ESP32 board, the only required interface is WiFi (or ethernet) to connect to a MQTT
broker with preconfigured PSK verification method.
#### Mosquitto settings
In case of using mosquitto broker, here is how to enable PSK authentication in `mosquitto.config`,
```
psk_hint hint
psk_file path_to_your_psk_file
allow_anonymous true
```
Note: Last line enables anonymous mode, as this example does not use mqtt username and password.
PSK file then has to contain pairs of hints and keys, as shown below:
```
hint:BAD123
```
Important note: Keys are stored as text hexadecimal values in PSK file, while the example code stores key as plain binary
as required by MQTT API. (See the example source for details: `"BAD123" -> 0xBA, 0xD1, 0x23`)
### Configure the project
* Run `idf.py menuconfig`
* Configure Wi-Fi or Ethernet under "Example Connection Configuration" menu. See "Establishing Wi-Fi or Ethernet Connection" section in [examples/protocols/README.md](../../README.md) for more details.
### Build and Flash
(To exit the serial monitor, type ``Ctrl-]``.)
See the Getting Started Guide for full steps to configure and use ESP-IDF to build projects.
## Example Output
```
I (2160) example_connect: Ethernet Link Up
I (4650) example_connect: Connected to Ethernet
I (4650) example_connect: IPv4 address: 192.168.0.1
I (4650) MQTTS_EXAMPLE: [APP] Free memory: 244792 bytes
I (4660) system_api: Base MAC address is not set, read default base MAC address from BLK0 of EFUSE
D (4670) MQTT_CLIENT: MQTT client_id=ESP32_c6B4F8
D (4680) MQTT_CLIENT: Core selection disabled
I (4680) MQTTS_EXAMPLE: Other event id:7
D (4680) esp-tls: host:192.168.0.2: strlen 13
D (4700) esp-tls: ssl psk authentication
D (4700) esp-tls: handshake in progress...
D (4720) MQTT_CLIENT: Transport connected to mqtts://192.168.0.2:8883
I (4720) MQTT_CLIENT: Sending MQTT CONNECT message, type: 1, id: 0000
D (4720) MQTT_CLIENT: mqtt_message_receive: first byte: 0x20
D (4730) MQTT_CLIENT: mqtt_message_receive: read "remaining length" byte: 0x2
D (4730) MQTT_CLIENT: mqtt_message_receive: total message length: 4 (already read: 2)
D (4740) MQTT_CLIENT: mqtt_message_receive: read_len=2
D (4750) MQTT_CLIENT: mqtt_message_receive: transport_read():4 4
D (4750) MQTT_CLIENT: Connected
I (4760) MQTTS_EXAMPLE: MQTT_EVENT_CONNECTED
D (4760) MQTT_CLIENT: mqtt_enqueue id: 4837, type=8 successful
D (4770) OUTBOX: ENQUEUE msgid=4837, msg_type=8, len=18, size=18
D (4770) MQTT_CLIENT: Sent subscribe topic=/topic/qos0, id: 4837, type=8 successful
I (4780) MQTTS_EXAMPLE: sent subscribe successful, msg_id=4837
D (4790) MQTT_CLIENT: mqtt_enqueue id: 58982, type=8 successful
D (4790) OUTBOX: ENQUEUE msgid=58982, msg_type=8, len=18, size=36
D (4800) MQTT_CLIENT: Sent subscribe topic=/topic/qos1, id: 58982, type=8 successful
I (4810) MQTTS_EXAMPLE: sent subscribe successful, msg_id=58982
```

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idf_component_register(SRCS "app_main.c"
PRIV_REQUIRES mqtt esp_wifi nvs_flash
INCLUDE_DIRS ".")

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@@ -1,151 +0,0 @@
/* MQTT over SSL Example
This example code is in the Public Domain (or CC0 licensed, at your option.)
Unless required by applicable law or agreed to in writing, this
software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
CONDITIONS OF ANY KIND, either express or implied.
*/
#include <stdio.h>
#include <stdint.h>
#include <stddef.h>
#include <string.h>
#include "esp_wifi.h"
#include "esp_system.h"
#include "nvs_flash.h"
#include "esp_event.h"
#include "esp_netif.h"
#include "protocol_examples_common.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/semphr.h"
#include "freertos/queue.h"
#include "lwip/sockets.h"
#include "lwip/dns.h"
#include "lwip/netdb.h"
#include "esp_log.h"
#include "mqtt_client.h"
#include "esp_tls.h"
/*
* Add here URI of mqtt broker which supports PSK authentication
*/
#define EXAMPLE_BROKER_URI "mqtts://192.168.0.2"
static const char *TAG = "mqtts_example";
/*
* Define psk key and hint as defined in mqtt broker
* example for mosquitto server, content of psk_file:
* hint:BAD123
*
*/
static const uint8_t s_key[] = { 0xBA, 0xD1, 0x23 };
static const psk_hint_key_t psk_hint_key = {
.key = s_key,
.key_size = sizeof(s_key),
.hint = "hint"
};
/*
* @brief Event handler registered to receive MQTT events
*
* This function is called by the MQTT client event loop.
*
* @param handler_args user data registered to the event.
* @param base Event base for the handler(always MQTT Base in this example).
* @param event_id The id for the received event.
* @param event_data The data for the event, esp_mqtt_event_handle_t.
*/
static void mqtt_event_handler(void *handler_args, esp_event_base_t base, int32_t event_id, void *event_data)
{
ESP_LOGD(TAG, "Event dispatched from event loop base=%s, event_id=%" PRIi32 "", base, event_id);
esp_mqtt_event_handle_t event = event_data;
esp_mqtt_client_handle_t client = event->client;
int msg_id;
switch ((esp_mqtt_event_id_t)event_id) {
case MQTT_EVENT_CONNECTED:
ESP_LOGI(TAG, "MQTT_EVENT_CONNECTED");
msg_id = esp_mqtt_client_subscribe(client, "/topic/qos0", 0);
ESP_LOGI(TAG, "sent subscribe successful, msg_id=%d", msg_id);
msg_id = esp_mqtt_client_subscribe(client, "/topic/qos1", 1);
ESP_LOGI(TAG, "sent subscribe successful, msg_id=%d", msg_id);
msg_id = esp_mqtt_client_unsubscribe(client, "/topic/qos1");
ESP_LOGI(TAG, "sent unsubscribe successful, msg_id=%d", msg_id);
break;
case MQTT_EVENT_DISCONNECTED:
ESP_LOGI(TAG, "MQTT_EVENT_DISCONNECTED");
break;
case MQTT_EVENT_SUBSCRIBED:
ESP_LOGI(TAG, "MQTT_EVENT_SUBSCRIBED, msg_id=%d, return code=0x%02x ", event->msg_id, (uint8_t)*event->data);
msg_id = esp_mqtt_client_publish(client, "/topic/qos0", "data", 0, 0, 0);
ESP_LOGI(TAG, "sent publish successful, msg_id=%d", msg_id);
break;
case MQTT_EVENT_UNSUBSCRIBED:
ESP_LOGI(TAG, "MQTT_EVENT_UNSUBSCRIBED, msg_id=%d", event->msg_id);
break;
case MQTT_EVENT_PUBLISHED:
ESP_LOGI(TAG, "MQTT_EVENT_PUBLISHED, msg_id=%d", event->msg_id);
break;
case MQTT_EVENT_DATA:
ESP_LOGI(TAG, "MQTT_EVENT_DATA");
printf("TOPIC=%.*s\r\n", event->topic_len, event->topic);
printf("DATA=%.*s\r\n", event->data_len, event->data);
break;
case MQTT_EVENT_ERROR:
ESP_LOGI(TAG, "MQTT_EVENT_ERROR");
break;
default:
ESP_LOGI(TAG, "Other event id:%d", event->event_id);
break;
}
}
static void mqtt_app_start(void)
{
const esp_mqtt_client_config_t mqtt_cfg = {
.broker.address.uri = EXAMPLE_BROKER_URI,
.broker.verification.psk_hint_key = &psk_hint_key,
};
ESP_LOGI(TAG, "[APP] Free memory: %" PRIu32 " bytes", esp_get_free_heap_size());
esp_mqtt_client_handle_t client = esp_mqtt_client_init(&mqtt_cfg);
/* The last argument may be used to pass data to the event handler, in this example mqtt_event_handler */
esp_mqtt_client_register_event(client, ESP_EVENT_ANY_ID, mqtt_event_handler, NULL);
esp_mqtt_client_start(client);
}
void app_main(void)
{
ESP_LOGI(TAG, "[APP] Startup..");
ESP_LOGI(TAG, "[APP] Free memory: %" PRIu32 " bytes", esp_get_free_heap_size());
ESP_LOGI(TAG, "[APP] IDF version: %s", esp_get_idf_version());
esp_log_level_set("*", ESP_LOG_INFO);
esp_log_level_set("mqtt_client", ESP_LOG_VERBOSE);
esp_log_level_set("transport_base", ESP_LOG_VERBOSE);
esp_log_level_set("esp-tls", ESP_LOG_VERBOSE);
esp_log_level_set("transport", ESP_LOG_VERBOSE);
esp_log_level_set("outbox", ESP_LOG_VERBOSE);
ESP_ERROR_CHECK(nvs_flash_init());
ESP_ERROR_CHECK(esp_netif_init());
ESP_ERROR_CHECK(esp_event_loop_create_default());
/* This helper function configures Wi-Fi or Ethernet, as selected in menuconfig.
* Read "Establishing Wi-Fi or Ethernet Connection" section in
* examples/protocols/README.md for more information about this function.
*/
ESP_ERROR_CHECK(example_connect());
mqtt_app_start();
}

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@@ -1,5 +0,0 @@
dependencies:
espressif/mqtt:
version: '*'
protocol_examples_common:
path: ${IDF_PATH}/examples/common_components/protocol_examples_common

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@@ -1,9 +0,0 @@
# The following four lines of boilerplate have to be in your project's CMakeLists
# in this exact order for cmake to work correctly
cmake_minimum_required(VERSION 3.16)
include($ENV{IDF_PATH}/tools/cmake/project.cmake)
# "Trim" the build. Include the minimal set of components, main, and anything it depends on.
idf_build_set_property(MINIMAL_BUILD ON)
project(mqtt_tcp)

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@@ -1,375 +0,0 @@
| Supported Targets | ESP32 | ESP32-C2 | ESP32-C3 | ESP32-C5 | ESP32-C6 | ESP32-C61 | ESP32-H2 | ESP32-P4 | ESP32-S2 | ESP32-S3 |
| ----------------- | ----- | -------- | -------- | -------- | -------- | --------- | -------- | -------- | -------- | -------- |
# ESP-MQTT sample application
(See the README.md file in the upper level 'examples' directory for more information about examples.)
This example connects to the broker URI selected using `idf.py menuconfig` (using mqtt tcp transport) and as a demonstration subscribes/unsubscribes and send a message on certain topic.
(Please note that the public broker is maintained by the community so may not be always available, for details please see this [disclaimer](https://iot.eclipse.org/getting-started/#sandboxes))
Note: If the URI equals `FROM_STDIN` then the broker address is read from stdin upon application startup (used for testing)
It uses ESP-MQTT library which implements mqtt client to connect to mqtt broker.
## How to use example
### Hardware Required
This example can be executed on any ESP32 board, the only required interface is WiFi and connection to internet.
### Configure the project
* Open the project configuration menu (`idf.py menuconfig`)
* Configure Wi-Fi or Ethernet under "Example Connection Configuration" menu. See "Establishing Wi-Fi or Ethernet Connection" section in [examples/protocols/README.md](../../README.md) for more details.
### Build and Flash
Build the project and flash it to the board, then run monitor tool to view serial output:
```
idf.py -p PORT flash monitor
```
(To exit the serial monitor, type ``Ctrl-]``.)
See the Getting Started Guide for full steps to configure and use ESP-IDF to build projects.
## Example Output
```
I (3714) event: sta ip: 192.168.0.139, mask: 255.255.255.0, gw: 192.168.0.2
I (3714) system_api: Base MAC address is not set, read default base MAC address from BLK0 of EFUSE
I (3964) MQTT_CLIENT: Sending MQTT CONNECT message, type: 1, id: 0000
I (4164) MQTT_EXAMPLE: MQTT_EVENT_CONNECTED
I (4174) MQTT_EXAMPLE: sent publish successful, msg_id=41464
I (4174) MQTT_EXAMPLE: sent subscribe successful, msg_id=17886
I (4174) MQTT_EXAMPLE: sent subscribe successful, msg_id=42970
I (4184) MQTT_EXAMPLE: sent unsubscribe successful, msg_id=50241
I (4314) MQTT_EXAMPLE: MQTT_EVENT_PUBLISHED, msg_id=41464
I (4484) MQTT_EXAMPLE: MQTT_EVENT_SUBSCRIBED, msg_id=17886
I (4484) MQTT_EXAMPLE: sent publish successful, msg_id=0
I (4684) MQTT_EXAMPLE: MQTT_EVENT_SUBSCRIBED, msg_id=42970
I (4684) MQTT_EXAMPLE: sent publish successful, msg_id=0
I (4884) MQTT_CLIENT: deliver_publish, message_length_read=19, message_length=19
I (4884) MQTT_EXAMPLE: MQTT_EVENT_DATA
TOPIC=/topic/qos0
DATA=data
I (5194) MQTT_CLIENT: deliver_publish, message_length_read=19, message_length=19
I (5194) MQTT_EXAMPLE: MQTT_EVENT_DATA
TOPIC=/topic/qos0
DATA=data
```
## Using Wi-Fi connection with ESP32P4
It is possible to use Wi-Fi connection on targets that do not support native Wi-Fi peripheral. This example demonstrates using `esp_wifi_remote` on ESP32P4 in the test configuration defined as `sdkconfig.ci.p4_wifi`. This configuration requires another ESP target with native Wi-Fi support physically connected to the ESP32-P4.
This uses [esp_hosted](https://components.espressif.com/components/espressif/esp_hosted) project by default, please refer to its documentation for more details.
Note, that `esp_hosted` library currently transmits Wi-Fi credentials in plain text. In case this is a concern, please choose the `eppp` option in `esp_wifi_remote` configuration menu (`CONFIG_ESP_WIFI_REMOTE_LIBRARY_EPPP=y`) and setup master-slave verification (please see [eppp: Configure master-slave verification](#eppp)).
### esp-hosted: Configure the slave project
You first need to build and flash the slave project. It's possible to perform this action directly from the host project, these commands can be used to set the slave target device (for example ESP32C6), build and flash the slave project. You will have to hold the RST button to keep the host device (ESP32-P4) in reset while flashing the slave device.
```
idf.py -C managed_components/espressif__esp_hosted/slave/ -B build_slave set-target esp32c6
idf.py -C managed_components/espressif__esp_hosted/slave/ -B build_slave build flash monitor
```
### esp-hosted: Example Output of the slave device
```
I (348) cpu_start: Unicore app
I (357) cpu_start: Pro cpu start user code
I (357) cpu_start: cpu freq: 160000000 Hz
I (357) app_init: Application information:
I (360) app_init: Project name: network_adapter
I (365) app_init: App version: qa-test-full-master-esp32c5-202
I (372) app_init: Compile time: Aug 30 2024 08:10:15
I (378) app_init: ELF file SHA256: 6220fafe8...
I (383) app_init: ESP-IDF: v5.4-dev-2600-g1157a27964c-dirt
I (390) efuse_init: Min chip rev: v0.0
I (395) efuse_init: Max chip rev: v0.99
I (400) efuse_init: Chip rev: v0.1
I (405) heap_init: Initializing. RAM available for dynamic allocation:
I (412) heap_init: At 4082FCD0 len 0004C940 (306 KiB): RAM
I (418) heap_init: At 4087C610 len 00002F54 (11 KiB): RAM
I (424) heap_init: At 50000000 len 00003FE8 (15 KiB): RTCRAM
I (432) spi_flash: detected chip: generic
I (435) spi_flash: flash io: dio
I (440) sleep_gpio: Configure to isolate all GPIO pins in sleep state
I (447) sleep_gpio: Enable automatic switching of GPIO sleep configuration
I (454) coexist: coex firmware version: 8da3f50af
I (481) coexist: coexist rom version 5b8dcfa
I (481) main_task: Started on CPU0
I (481) main_task: Calling app_main()
I (482) fg_mcu_slave: *********************************************************************
I (491) fg_mcu_slave: ESP-Hosted-MCU Slave FW version :: 0.0.6
I (501) fg_mcu_slave: Transport used :: SDIO only
I (510) fg_mcu_slave: *********************************************************************
I (519) fg_mcu_slave: Supported features are:
I (524) fg_mcu_slave: - WLAN over SDIO
I (528) h_bt: - BT/BLE
I (531) h_bt: - HCI Over SDIO
I (535) h_bt: - BLE only
I (539) fg_mcu_slave: capabilities: 0xd
I (543) fg_mcu_slave: Supported extended features are:
I (549) h_bt: - BT/BLE (extended)
I (553) fg_mcu_slave: extended capabilities: 0x0
I (563) h_bt: ESP Bluetooth MAC addr: 40:4c:ca:5b:a0:8a
I (564) BLE_INIT: Using main XTAL as clock source
I (574) BLE_INIT: ble controller commit:[7491a85]
I (575) BLE_INIT: Bluetooth MAC: 40:4c:ca:5b:a0:8a
I (581) phy_init: phy_version 310,dde1ba9,Jun 4 2024,16:38:11
I (641) phy: libbtbb version: 04952fd, Jun 4 2024, 16:38:26
I (642) SDIO_SLAVE: Using SDIO interface
I (642) SDIO_SLAVE: sdio_init: sending mode: SDIO_SLAVE_SEND_STREAM
I (648) SDIO_SLAVE: sdio_init: ESP32-C6 SDIO RxQ[20] timing[0]
I (1155) fg_mcu_slave: Start Data Path
I (1165) fg_mcu_slave: Initial set up done
I (1165) slave_ctrl: event ESPInit
```
### esp_hosted: Example Output of the master device (ESP32-P4)
```
I (1833) sdio_wrapper: Function 0 Blocksize: 512
I (1843) sdio_wrapper: Function 1 Blocksize: 512
I (1843) H_SDIO_DRV: SDIO Host operating in STREAMING MODE
I (1853) H_SDIO_DRV: generate slave intr
I (1863) transport: Received INIT event from ESP32 peripheral
I (1873) transport: EVENT: 12
I (1873) transport: EVENT: 11
I (1873) transport: capabilities: 0xd
I (1873) transport: Features supported are:
I (1883) transport: * WLAN
I (1883) transport: - HCI over SDIO
I (1893) transport: - BLE only
I (1893) transport: EVENT: 13
I (1893) transport: ESP board type is : 13
I (1903) transport: Base transport is set-up
I (1903) transport: Slave chip Id[12]
I (1913) hci_stub_drv: Host BT Support: Disabled
I (1913) H_SDIO_DRV: Received INIT event
I (1923) rpc_evt: EVENT: ESP INIT
I (1923) rpc_wrap: Received Slave ESP Init
I (2703) rpc_core: <-- RPC_Req [0x116], uid 1
I (2823) rpc_rsp: --> RPC_Resp [0x216], uid 1
I (2823) rpc_core: <-- RPC_Req [0x139], uid 2
I (2833) rpc_rsp: --> RPC_Resp [0x239], uid 2
I (2833) rpc_core: <-- RPC_Req [0x104], uid 3
I (2843) rpc_rsp: --> RPC_Resp [0x204], uid 3
I (2843) rpc_core: <-- RPC_Req [0x118], uid 4
I (2933) rpc_rsp: --> RPC_Resp [0x218], uid 4
I (2933) example_connect: Connecting to Cermakowifi...
I (2933) rpc_core: <-- RPC_Req [0x11c], uid 5
I (2943) rpc_evt: Event [0x2b] received
I (2943) rpc_evt: Event [0x2] received
I (2953) rpc_evt: EVT rcvd: Wi-Fi Start
I (2953) rpc_core: <-- RPC_Req [0x101], uid 6
I (2973) rpc_rsp: --> RPC_Resp [0x21c], uid 5
I (2973) H_API: esp_wifi_remote_connect
I (2973) rpc_core: <-- RPC_Req [0x11a], uid 7
I (2983) rpc_rsp: --> RPC_Resp [0x201], uid 6
I (3003) rpc_rsp: --> RPC_Resp [0x21a], uid 7
I (3003) example_connect: Waiting for IP(s)
I (5723) rpc_evt: Event [0x2b] received
I (5943) esp_wifi_remote: esp_wifi_internal_reg_rxcb: sta: 0x400309fe
0x400309fe: wifi_sta_receive at /home/david/esp/idf/components/esp_wifi/src/wifi_netif.c:38
I (7573) example_connect: Got IPv6 event: Interface "example_netif_sta" address: fe80:0000:0000:0000:424c:caff:fe5b:a088, type: ESP_IP6_ADDR_IS_LINK_LOCAL
I (9943) esp_netif_handlers: example_netif_sta ip: 192.168.0.29, mask: 255.255.255.0, gw: 192.168.0.1
I (9943) example_connect: Got IPv4 event: Interface "example_netif_sta" address: 192.168.0.29
I (9943) example_common: Connected to example_netif_sta
I (9953) example_common: - IPv4 address: 192.168.0.29,
I (9963) example_common: - IPv6 address: fe80:0000:0000:0000:424c:caff:fe5b:a088, type: ESP_IP6_ADDR_IS_LINK_LOCAL
I (9973) mqtt_example: Other event id:7
I (9973) main_task: Returned from app_main()
I (10253) mqtt_example: MQTT_EVENT_CONNECTED
I (10253) mqtt_example: sent publish successful, msg_id=45053
I (10253) mqtt_example: sent subscribe successful, msg_id=34643
I (10263) mqtt_example: sent subscribe successful, msg_id=2358
I (10263) mqtt_example: sent unsubscribe successful, msg_id=57769
I (10453) mqtt_example: MQTT_EVENT_PUBLISHED, msg_id=45053
I (10603) mqtt_example: MQTT_EVENT_SUBSCRIBED, msg_id=34643
I (10603) mqtt_example: sent publish successful, msg_id=0
I (10603) mqtt_example: MQTT_EVENT_SUBSCRIBED, msg_id=2358
I (10613) mqtt_example: sent publish successful, msg_id=0
I (10613) mqtt_example: MQTT_EVENT_UNSUBSCRIBED, msg_id=57769
I (10713) mqtt_example: MQTT_EVENT_DATA
TOPIC=/topic/qos0
DATA=data
I (10863) mqtt_example: MQTT_EVENT_DATA
TOPIC=/topic/qos0
DATA=data
```
### <a name="eppp"></a>eppp: Configure master-slave verification
In order to secure the physical connection between the ESP32-P4 (master) and the slave device, it is necessary to set certificates and keys for each side.
To bootstrap this step, you can use one-time generated self-signed RSA keys and certificates running:
```
./managed_components/espressif__esp_wifi_remote/examples/test_certs/generate_test_certs.sh espressif.local
```
#### eppp: Configure the slave project
It is recommended to create a new project from `esp_wifi_remote` component's example with
```
idf.py create-project-from-example "espressif/esp_wifi_remote:server"
```
but you can also build and flash the slave project directly from the `managed_components` directory using:
```
idf.py -C managed_components/espressif__esp_wifi_remote/examples/server/ -B build_slave
```
Please follow these steps to setup the slave application:
* `idf.py set-target` -- choose the slave target (must support Wi-Fi)
* `idf.py menuconfig` -- configure the physical connection and verification details:
- `CONFIG_ESP_WIFI_REMOTE_EPPP_CLIENT_CA` -- CA for verifying ESP32-P4 application
- `CONFIG_ESP_WIFI_REMOTE_EPPP_SERVER_CRT` -- slave's certificate
- `CONFIG_ESP_WIFI_REMOTE_EPPP_SERVER_KEY` -- slave's private key
* `idf.py build flash monitor`
#### eppp: Configure the master project (ESP32-P4)
similarly to the slave project, we have to configure
* the physical connection
* the verification
- `CONFIG_ESP_WIFI_REMOTE_EPPP_SERVER_CA` -- CA for verifying the slave application
- `CONFIG_ESP_WIFI_REMOTE_EPPP_CLIENT_CRT` -- our own certificate
- `CONFIG_ESP_WIFI_REMOTE_EPPP_CLIENT_KEY` -- our own private key
After project configuration, you build and flash the board with
```
idf.py build flash monitor
```
### eppp: Example Output of the slave device
```
I (7982) main_task: Returned from app_main()
I (8242) rpc_server: Received header id 2
I (8242) pp: pp rom version: 5b8dcfa
I (8242) net80211: net80211 rom version: 5b8dcfa
I (8252) wifi:wifi driver task: 4082be8c, prio:23, stack:6656, core=0
I (8252) wifi:wifi firmware version: feaf82d
I (8252) wifi:wifi certification version: v7.0
I (8252) wifi:config NVS flash: enabled
I (8262) wifi:config nano formatting: disabled
I (8262) wifi:mac_version:HAL_MAC_ESP32AX_761,ut_version:N, band:0x1
I (8272) wifi:Init data frame dynamic rx buffer num: 32
I (8272) wifi:Init static rx mgmt buffer num: 5
I (8282) wifi:Init management short buffer num: 32
I (8282) wifi:Init dynamic tx buffer num: 32
I (8292) wifi:Init static tx FG buffer num: 2
I (8292) wifi:Init static rx buffer size: 1700 (rxctrl:92, csi:512)
I (8302) wifi:Init static rx buffer num: 10
I (8302) wifi:Init dynamic rx buffer num: 32
I (8302) wifi_init: rx ba win: 6
I (8312) wifi_init: accept mbox: 6
I (8312) wifi_init: tcpip mbox: 32
I (8322) wifi_init: udp mbox: 6
I (8322) wifi_init: tcp mbox: 6
I (8322) wifi_init: tcp tx win: 5760
I (8332) wifi_init: tcp rx win: 5760
I (8332) wifi_init: tcp mss: 1440
I (8342) wifi_init: WiFi IRAM OP enabled
I (8342) wifi_init: WiFi RX IRAM OP enabled
I (8352) wifi_init: WiFi SLP IRAM OP enabled
I (8362) rpc_server: Received header id 11
I (8362) rpc_server: Received header id 4
I (8372) rpc_server: Received header id 6
I (8372) phy_init: phy_version 270,339aa07,Apr 3 2024,16:36:11
I (8492) wifi:enable tsf
I (8492) rpc_server: Received WIFI event 41
I (8502) rpc_server: Received WIFI event 2
I (8732) rpc_server: Received header id 10
I (8742) rpc_server: Received header id 5
I (8752) rpc_server: Received header id 8
I (11452) wifi:new:<6,0>, old:<1,0>, ap:<255,255>, sta:<6,0>, prof:1, snd_ch_cfg:0x0
I (11452) wifi:(connect)dot11_authmode:0x3, pairwise_cipher:0x3, group_cipher:0x1
I (11452) wifi:state: init -> auth (0xb0)
I (11462) rpc_server: Received WIFI event 41
I (11462) wifi:state: auth -> assoc (0x0)
I (11472) wifi:(assoc)RESP, Extended Capabilities length:8, operating_mode_notification:0
I (11472) wifi:(assoc)RESP, Extended Capabilities, MBSSID:0, TWT Responder:0, OBSS Narrow Bandwidth RU In OFDMA Tolerance:0
I (11482) wifi:Extended Capabilities length:8, operating_mode_notification:1
I (11492) wifi:state: assoc -> run (0x10)
I (11492) wifi:(trc)phytype:CBW20-SGI, snr:50, maxRate:144, highestRateIdx:0
W (11502) wifi:(trc)band:2G, phymode:3, highestRateIdx:0, lowestRateIdx:11, dataSchedTableSize:14
I (11512) wifi:(trc)band:2G, rate(S-MCS7, rateIdx:0), ampdu(rate:S-MCS7, schedIdx(0, stop:8)), snr:50, ampduState:wait operational
I (11522) wifi:ifidx:0, rssi:-45, nf:-95, phytype(0x3, CBW20-SGI), phymode(0x3, 11bgn), max_rate:144, he:0, vht:0, ht:1
I (11532) wifi:(ht)max.RxAMPDULenExponent:3(65535 bytes), MMSS:6(8 us)
W (11542) wifi:<ba-add>idx:0, ifx:0, tid:0, TAHI:0x1002cb4, TALO:0x1b942980, (ssn:0, win:64, cur_ssn:0), CONF:0xc0000005
I (11572) wifi:connected with Cermakowifi, aid = 2, channel 6, BW20, bssid = 80:29:94:1b:b4:2c
I (11572) wifi:cipher(pairwise:0x3, group:0x1), pmf:0, security:WPA2-PSK, phy:11bgn, rssi:-45
I (11582) wifi:pm start, type: 1, twt_start:0
I (11582) wifi:pm start, type:1, aid:0x2, trans-BSSID:80:29:94:1b:b4:2c, BSSID[5]:0x2c, mbssid(max-indicator:0, index:0), he:0
I (11592) wifi:dp: 1, bi: 102400, li: 3, scale listen interval from 307200 us to 307200 us
I (11602) wifi:set rx beacon pti, rx_bcn_pti: 10, bcn_timeout: 25000, mt_pti: 10, mt_time: 10000
I (11612) wifi:[ADDBA]TX addba request, tid:0, dialogtoken:1, bufsize:64, A-MSDU:0(not supported), policy:1(IMR), ssn:0(0x0)
I (11622) wifi:[ADDBA]TX addba request, tid:7, dialogtoken:2, bufsize:64, A-MSDU:0(not supported), policy:1(IMR), ssn:0(0x20)
I (11632) wifi:[ADDBA]TX addba request, tid:5, dialogtoken:3, bufsize:64, A-MSDU:0(not supported), policy:1(IMR), ssn:0(0x0)
I (11642) wifi:[ADDBA]RX addba response, status:0, tid:7/tb:0(0x1), bufsize:64, batimeout:0, txa_wnd:64
I (11652) wifi:[ADDBA]RX addba response, status:0, tid:5/tb:0(0x1), bufsize:64, batimeout:0, txa_wnd:64
I (11662) wifi:[ADDBA]RX addba response, status:0, tid:0/tb:1(0x1), bufsize:64, batimeout:0, txa_wnd:64
I (11672) wifi:AP's beacon interval = 102400 us, DTIM period = 1
I (11682) rpc_server: Received WIFI event 4
I (15682) esp_netif_handlers: sta ip: 192.168.0.33, mask: 255.255.255.0, gw: 192.168.0.1
I (15682) rpc_server: Received IP event 0
I (15682) rpc_server: Main DNS:185.162.24.55
I (15682) rpc_server: IP address:192.168.0.33
```
### eppp: Example Output of the master device (ESP32-P4)
```
I (445) example_connect: Start example_connect.
I (455) uart: queue free spaces: 16
I (455) eppp_link: Waiting for IP address 0
I (3195) esp-netif_lwip-ppp: Connected
I (3195) eppp_link: Got IPv4 event: Interface "pppos_client(EPPP0)" address: 192.168.11.2
I (3195) esp-netif_lwip-ppp: Connected
I (3195) eppp_link: Connected! 0
I (5475) example_connect: Waiting for IP(s)
I (8405) esp_wifi_remote: esp_wifi_internal_reg_rxcb: sta: 0x4001c68a
I (9445) example_connect: Got IPv6 event: Interface "pppos_client" address: fe80:0000:0000:0000:5632:04ff:fe08:5054, type: ESP_IP6_ADDR_IS_LINK_LOCAL
I (12415) rpc_client: Main DNS:185.162.24.55
I (12415) esp_netif_handlers: pppos_client ip: 192.168.11.2, mask: 255.255.255.255, gw: 192.168.11.1
I (12415) rpc_client: EPPP IP:192.168.11.1
I (12415) example_connect: Got IPv4 event: Interface "pppos_client" address: 192.168.11.2
I (12425) rpc_client: WIFI IP:192.168.0.33
I (12435) example_common: Connected to pppos_client
I (12445) rpc_client: WIFI GW:192.168.0.1
I (12455) example_common: - IPv6 address: fe80:0000:0000:0000:5632:04ff:fe08:5054, type: ESP_IP6_ADDR_IS_LINK_LOCAL
I (12455) rpc_client: WIFI mask:255.255.255.0
I (12465) example_common: Connected to pppos_client
I (12475) example_common: - IPv4 address: 192.168.11.2,
I (12475) example_common: - IPv6 address: fe80:0000:0000:0000:5c3b:1291:05ca:6dc8, type: ESP_IP6_ADDR_IS_LINK_LOCAL
I (12495) mqtt_example: Other event id:7
I (12495) main_task: Returned from app_main()
I (12905) mqtt_example: MQTT_EVENT_CONNECTED
I (12905) mqtt_example: sent publish successful, msg_id=36013
I (12905) mqtt_example: sent subscribe successful, msg_id=44233
I (12905) mqtt_example: sent subscribe successful, msg_id=36633
I (12915) mqtt_example: sent unsubscribe successful, msg_id=15480
I (13115) mqtt_example: MQTT_EVENT_PUBLISHED, msg_id=36013
I (13415) mqtt_example: MQTT_EVENT_SUBSCRIBED, msg_id=44233
I (13415) mqtt_example: sent publish successful, msg_id=0
I (13415) mqtt_example: MQTT_EVENT_SUBSCRIBED, msg_id=36633
I (13415) mqtt_example: sent publish successful, msg_id=0
I (13425) mqtt_example: MQTT_EVENT_DATA
TOPIC=/topic/qos1
DATA=data_3
I (13435) mqtt_example: MQTT_EVENT_UNSUBSCRIBED, msg_id=15480
I (13615) mqtt_example: MQTT_EVENT_DATA
TOPIC=/topic/qos0
DATA=data
I (13925) mqtt_example: MQTT_EVENT_DATA
TOPIC=/topic/qos0
```

View File

@@ -1,3 +0,0 @@
idf_component_register(SRCS "app_main.c"
PRIV_REQUIRES mqtt nvs_flash esp_netif
INCLUDE_DIRS ".")

View File

@@ -1,13 +0,0 @@
menu "Example Configuration"
config BROKER_URL
string "Broker URL"
default "mqtt://mqtt.eclipseprojects.io"
help
URL of the broker to connect to
config BROKER_URL_FROM_STDIN
bool
default y if BROKER_URL = "FROM_STDIN"
endmenu

View File

@@ -1,162 +0,0 @@
/* MQTT (over TCP) Example
This example code is in the Public Domain (or CC0 licensed, at your option.)
Unless required by applicable law or agreed to in writing, this
software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
CONDITIONS OF ANY KIND, either express or implied.
*/
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <stdlib.h>
#include <inttypes.h>
#include "esp_system.h"
#include "nvs_flash.h"
#include "esp_event.h"
#include "esp_netif.h"
#include "protocol_examples_common.h"
#include "esp_log.h"
#include "mqtt_client.h"
static const char *TAG = "mqtt_example";
static void log_error_if_nonzero(const char *message, int error_code)
{
if (error_code != 0) {
ESP_LOGE(TAG, "Last error %s: 0x%x", message, error_code);
}
}
/*
* @brief Event handler registered to receive MQTT events
*
* This function is called by the MQTT client event loop.
*
* @param handler_args user data registered to the event.
* @param base Event base for the handler(always MQTT Base in this example).
* @param event_id The id for the received event.
* @param event_data The data for the event, esp_mqtt_event_handle_t.
*/
static void mqtt_event_handler(void *handler_args, esp_event_base_t base, int32_t event_id, void *event_data)
{
ESP_LOGD(TAG, "Event dispatched from event loop base=%s, event_id=%" PRIi32 "", base, event_id);
esp_mqtt_event_handle_t event = event_data;
esp_mqtt_client_handle_t client = event->client;
int msg_id;
switch ((esp_mqtt_event_id_t)event_id) {
case MQTT_EVENT_CONNECTED:
ESP_LOGI(TAG, "MQTT_EVENT_CONNECTED");
msg_id = esp_mqtt_client_publish(client, "/topic/qos1", "data_3", 0, 1, 0);
ESP_LOGI(TAG, "sent publish successful, msg_id=%d", msg_id);
msg_id = esp_mqtt_client_subscribe(client, "/topic/qos0", 0);
ESP_LOGI(TAG, "sent subscribe successful, msg_id=%d", msg_id);
msg_id = esp_mqtt_client_subscribe(client, "/topic/qos1", 1);
ESP_LOGI(TAG, "sent subscribe successful, msg_id=%d", msg_id);
msg_id = esp_mqtt_client_unsubscribe(client, "/topic/qos1");
ESP_LOGI(TAG, "sent unsubscribe successful, msg_id=%d", msg_id);
break;
case MQTT_EVENT_DISCONNECTED:
ESP_LOGI(TAG, "MQTT_EVENT_DISCONNECTED");
break;
case MQTT_EVENT_SUBSCRIBED:
ESP_LOGI(TAG, "MQTT_EVENT_SUBSCRIBED, msg_id=%d, return code=0x%02x ", event->msg_id, (uint8_t)*event->data);
msg_id = esp_mqtt_client_publish(client, "/topic/qos0", "data", 0, 0, 0);
ESP_LOGI(TAG, "sent publish successful, msg_id=%d", msg_id);
break;
case MQTT_EVENT_UNSUBSCRIBED:
ESP_LOGI(TAG, "MQTT_EVENT_UNSUBSCRIBED, msg_id=%d", event->msg_id);
break;
case MQTT_EVENT_PUBLISHED:
ESP_LOGI(TAG, "MQTT_EVENT_PUBLISHED, msg_id=%d", event->msg_id);
break;
case MQTT_EVENT_DATA:
ESP_LOGI(TAG, "MQTT_EVENT_DATA");
printf("TOPIC=%.*s\r\n", event->topic_len, event->topic);
printf("DATA=%.*s\r\n", event->data_len, event->data);
break;
case MQTT_EVENT_ERROR:
ESP_LOGI(TAG, "MQTT_EVENT_ERROR");
if (event->error_handle->error_type == MQTT_ERROR_TYPE_TCP_TRANSPORT) {
log_error_if_nonzero("reported from esp-tls", event->error_handle->esp_tls_last_esp_err);
log_error_if_nonzero("reported from tls stack", event->error_handle->esp_tls_stack_err);
log_error_if_nonzero("captured as transport's socket errno", event->error_handle->esp_transport_sock_errno);
ESP_LOGI(TAG, "Last errno string (%s)", strerror(event->error_handle->esp_transport_sock_errno));
}
break;
default:
ESP_LOGI(TAG, "Other event id:%d", event->event_id);
break;
}
}
static void mqtt_app_start(void)
{
esp_mqtt_client_config_t mqtt_cfg = {
.broker.address.uri = CONFIG_BROKER_URL,
};
#if CONFIG_BROKER_URL_FROM_STDIN
char line[128];
if (strcmp(mqtt_cfg.broker.address.uri, "FROM_STDIN") == 0) {
int count = 0;
printf("Please enter url of mqtt broker\n");
while (count < 128) {
int c = fgetc(stdin);
if (c == '\n') {
line[count] = '\0';
break;
} else if (c > 0 && c < 127) {
line[count] = c;
++count;
}
vTaskDelay(10 / portTICK_PERIOD_MS);
}
mqtt_cfg.broker.address.uri = line;
printf("Broker url: %s\n", line);
} else {
ESP_LOGE(TAG, "Configuration mismatch: wrong broker url");
abort();
}
#endif /* CONFIG_BROKER_URL_FROM_STDIN */
esp_mqtt_client_handle_t client = esp_mqtt_client_init(&mqtt_cfg);
/* The last argument may be used to pass data to the event handler, in this example mqtt_event_handler */
esp_mqtt_client_register_event(client, ESP_EVENT_ANY_ID, mqtt_event_handler, NULL);
esp_mqtt_client_start(client);
}
void app_main(void)
{
ESP_LOGI(TAG, "[APP] Startup..");
ESP_LOGI(TAG, "[APP] Free memory: %" PRIu32 " bytes", esp_get_free_heap_size());
ESP_LOGI(TAG, "[APP] IDF version: %s", esp_get_idf_version());
esp_log_level_set("*", ESP_LOG_INFO);
esp_log_level_set("mqtt_client", ESP_LOG_VERBOSE);
esp_log_level_set("mqtt_example", ESP_LOG_VERBOSE);
esp_log_level_set("transport_base", ESP_LOG_VERBOSE);
esp_log_level_set("esp-tls", ESP_LOG_VERBOSE);
esp_log_level_set("transport", ESP_LOG_VERBOSE);
esp_log_level_set("outbox", ESP_LOG_VERBOSE);
ESP_ERROR_CHECK(nvs_flash_init());
ESP_ERROR_CHECK(esp_netif_init());
ESP_ERROR_CHECK(esp_event_loop_create_default());
/* This helper function configures Wi-Fi or Ethernet, as selected in menuconfig.
* Read "Establishing Wi-Fi or Ethernet Connection" section in
* examples/protocols/README.md for more information about this function.
*/
ESP_ERROR_CHECK(example_connect());
mqtt_app_start();
}

View File

@@ -1,13 +0,0 @@
dependencies:
espressif/esp_hosted:
rules:
- if: target in [esp32p4, esp32h2]
version: 2.5.1
espressif/esp_wifi_remote:
rules:
- if: target in [esp32p4, esp32h2]
version: '>=0.10,<2.0'
espressif/mqtt:
version: '*'
protocol_examples_common:
path: ${IDF_PATH}/examples/common_components/protocol_examples_common

View File

@@ -1,97 +0,0 @@
# SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
# SPDX-License-Identifier: Unlicense OR CC0-1.0
import logging
import os
import socket
import struct
import sys
import time
from threading import Thread
import pexpect
import pytest
from common_test_methods import get_host_ip4_by_dest_ip
from pytest_embedded import Dut
from pytest_embedded_idf.utils import idf_parametrize
msgid = -1
def mqqt_server_sketch(my_ip, port): # type: (str, str) -> None
global msgid
print('Starting the server on {}'.format(my_ip))
s = None
try:
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.settimeout(60)
s.bind((my_ip, port))
s.listen(1)
q, addr = s.accept()
q.settimeout(30)
print('connection accepted')
except Exception:
print(
'Local server on {}:{} listening/accepting failure: {}'
'Possibly check permissions or firewall settings'
'to accept connections on this address'.format(my_ip, port, sys.exc_info()[0])
)
raise
data = q.recv(1024)
# check if received initial empty message
print('received from client {!r}'.format(data))
data = bytearray([0x20, 0x02, 0x00, 0x00])
q.send(data)
# try to receive qos1
data = q.recv(1024)
msgid = struct.unpack('>H', data[15:17])[0]
print('received from client {!r}, msgid: {}'.format(data, msgid))
data = bytearray([0x40, 0x02, data[15], data[16]])
q.send(data)
time.sleep(5)
s.close()
print('server closed')
@pytest.mark.ethernet
@idf_parametrize('target', ['esp32'], indirect=['target'])
def test_examples_protocol_mqtt_qos1(dut: Dut) -> None:
global msgid
"""
steps: (QoS1: Happy flow)
1. start the broker broker (with correctly sending ACK)
2. DUT client connects to a broker and publishes qos1 message
3. Test evaluates that qos1 message is queued and removed from queued after ACK received
4. Test the broker received the same message id evaluated in step 3
"""
# check and log bin size
binary_file = os.path.join(dut.app.binary_path, 'mqtt_tcp.bin')
bin_size = os.path.getsize(binary_file)
logging.info('[Performance][mqtt_tcp_bin_size]: %s KB', bin_size // 1024)
# waiting for getting the IP address
try:
ip_address = dut.expect(r'IPv4 address: (\d+\.\d+\.\d+\.\d+)', timeout=30).group(1).decode()
print('Connected to AP/Ethernet with IP: {}'.format(ip_address))
except pexpect.TIMEOUT:
raise ValueError('ENV_TEST_FAILURE: Cannot connect to AP/Ethernet')
# 2. start mqtt broker sketch
host_ip = get_host_ip4_by_dest_ip(ip_address)
thread1 = Thread(target=mqqt_server_sketch, args=(host_ip, 1883))
thread1.start()
data_write = 'mqtt://' + host_ip
print('writing to device: {}'.format(data_write))
dut.write(data_write)
thread1.join()
print('Message id received from server: {}'.format(msgid))
# 3. check the message id was enqueued and then deleted
msgid_enqueued = dut.expect(b'outbox: ENQUEUE msgid=([0-9]+)', timeout=30).group(1).decode()
msgid_deleted = dut.expect(b'outbox: DELETED msgid=([0-9]+)', timeout=30).group(1).decode()
# 4. check the msgid of received data are the same as that of enqueued and deleted from outbox
if msgid_enqueued == str(msgid) and msgid_deleted == str(msgid):
print('PASS: Received correct msg id')
else:
print('Failure!')
raise ValueError(
'Mismatch of msgid: received: {}, enqueued {}, deleted {}'.format(msgid, msgid_enqueued, msgid_deleted)
)

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@@ -1,13 +0,0 @@
CONFIG_LOG_DEFAULT_LEVEL_DEBUG=y
CONFIG_BROKER_URL="FROM_STDIN"
CONFIG_EXAMPLE_CONNECT_ETHERNET=y
CONFIG_EXAMPLE_CONNECT_WIFI=n
CONFIG_EXAMPLE_USE_INTERNAL_ETHERNET=y
CONFIG_EXAMPLE_ETH_PHY_IP101=y
CONFIG_EXAMPLE_ETH_MDC_GPIO=23
CONFIG_EXAMPLE_ETH_MDIO_GPIO=18
CONFIG_EXAMPLE_ETH_PHY_RST_GPIO=5
CONFIG_EXAMPLE_ETH_PHY_ADDR=1
CONFIG_EXAMPLE_CONNECT_IPV6=y
CONFIG_LWIP_TCPIP_CORE_LOCKING=y
CONFIG_LWIP_CHECK_THREAD_SAFETY=y

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@@ -1,5 +0,0 @@
CONFIG_IDF_TARGET="esp32p4"
CONFIG_EXAMPLE_CONNECT_WIFI=y
CONFIG_ESP_WIFI_REMOTE_LIBRARY_EPPP=y
CONFIG_ESP_WIFI_REMOTE_EPPP_UART_TX_PIN=17
CONFIG_ESP_WIFI_REMOTE_EPPP_UART_RX_PIN=16

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@@ -1,3 +0,0 @@
CONFIG_IDF_TARGET="esp32p4"
CONFIG_EXAMPLE_CONNECT_WIFI=y
CONFIG_ESP_WIFI_REMOTE_LIBRARY_HOSTED=y

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@@ -1,3 +0,0 @@
CONFIG_EXAMPLE_CONNECT_WIFI=n
CONFIG_EXAMPLE_CONNECT_PPP=y
CONFIG_EXAMPLE_CONNECT_PPP_DEVICE_UART=y

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@@ -1,9 +0,0 @@
# The following four lines of boilerplate have to be in your project's CMakeLists
# in this exact order for cmake to work correctly
cmake_minimum_required(VERSION 3.16)
include($ENV{IDF_PATH}/tools/cmake/project.cmake)
# "Trim" the build. Include the minimal set of components, main, and anything it depends on.
idf_build_set_property(MINIMAL_BUILD ON)
project(mqtt_websocket)

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@@ -1,61 +0,0 @@
| Supported Targets | ESP32 | ESP32-C2 | ESP32-C3 | ESP32-C5 | ESP32-C6 | ESP32-C61 | ESP32-H2 | ESP32-P4 | ESP32-S2 | ESP32-S3 |
| ----------------- | ----- | -------- | -------- | -------- | -------- | --------- | -------- | -------- | -------- | -------- |
# ESP-MQTT MQTT over Websocket
(See the README.md file in the upper level 'examples' directory for more information about examples.)
This example connects to the broker mqtt.eclipseprojects.io over web sockets as a demonstration subscribes/unsubscribes and send a message on certain topic.
(Please note that the public broker is maintained by the community so may not be always available, for details please see this [disclaimer](https://iot.eclipse.org/getting-started/#sandboxes))
It uses ESP-MQTT library which implements mqtt client to connect to mqtt broker.
## How to use example
### Hardware Required
This example can be executed on any ESP32 board, the only required interface is WiFi and connection to internet.
### Configure the project
* Open the project configuration menu (`idf.py menuconfig`)
* Configure Wi-Fi or Ethernet under "Example Connection Configuration" menu. See "Establishing Wi-Fi or Ethernet Connection" section in [examples/protocols/README.md](../../README.md) for more details.
### Build and Flash
Build the project and flash it to the board, then run monitor tool to view serial output:
```
idf.py -p PORT flash monitor
```
(To exit the serial monitor, type ``Ctrl-]``.)
See the Getting Started Guide for full steps to configure and use ESP-IDF to build projects.
## Example Output
```
I (3714) event: sta ip: 192.168.0.139, mask: 255.255.255.0, gw: 192.168.0.2
I (3714) system_api: Base MAC address is not set, read default base MAC address from BLK0 of EFUSE
I (3964) MQTT_CLIENT: Sending MQTT CONNECT message, type: 1, id: 0000
I (4164) MQTTWS_EXAMPLE: MQTT_EVENT_CONNECTED
I (4174) MQTTWS_EXAMPLE: sent publish successful, msg_id=41464
I (4174) MQTTWS_EXAMPLE: sent subscribe successful, msg_id=17886
I (4174) MQTTWS_EXAMPLE: sent subscribe successful, msg_id=42970
I (4184) MQTTWS_EXAMPLE: sent unsubscribe successful, msg_id=50241
I (4314) MQTTWS_EXAMPLE: MQTT_EVENT_PUBLISHED, msg_id=41464
I (4484) MQTTWS_EXAMPLE: MQTT_EVENT_SUBSCRIBED, msg_id=17886
I (4484) MQTTWS_EXAMPLE: sent publish successful, msg_id=0
I (4684) MQTTWS_EXAMPLE: MQTT_EVENT_SUBSCRIBED, msg_id=42970
I (4684) MQTTWS_EXAMPLE: sent publish successful, msg_id=0
I (4884) MQTT_CLIENT: deliver_publish, message_length_read=19, message_length=19
I (4884) MQTTWS_EXAMPLE: MQTT_EVENT_DATA
TOPIC=/topic/qos0
DATA=data
I (5194) MQTT_CLIENT: deliver_publish, message_length_read=19, message_length=19
I (5194) MQTTWS_EXAMPLE: MQTT_EVENT_DATA
TOPIC=/topic/qos0
DATA=data
```

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@@ -1,3 +0,0 @@
idf_component_register(SRCS "app_main.c"
PRIV_REQUIRES mqtt esp_wifi nvs_flash
INCLUDE_DIRS ".")

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@@ -1,9 +0,0 @@
menu "Example Configuration"
config BROKER_URI
string "Broker URL"
default "ws://mqtt.eclipseprojects.io:80/mqtt"
help
URL of an mqtt broker which this example connects to.
endmenu

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@@ -1,144 +0,0 @@
/* MQTT over Websockets Example
This example code is in the Public Domain (or CC0 licensed, at your option.)
Unless required by applicable law or agreed to in writing, this
software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
CONDITIONS OF ANY KIND, either express or implied.
*/
#include <stdio.h>
#include <stdint.h>
#include <stddef.h>
#include <string.h>
#include "esp_wifi.h"
#include "esp_system.h"
#include "nvs_flash.h"
#include "esp_event.h"
#include "esp_netif.h"
#include "protocol_examples_common.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/semphr.h"
#include "freertos/queue.h"
#include "lwip/sockets.h"
#include "lwip/dns.h"
#include "lwip/netdb.h"
#include "esp_log.h"
#include "mqtt_client.h"
static const char *TAG = "mqttws_example";
static void log_error_if_nonzero(const char *message, int error_code)
{
if (error_code != 0) {
ESP_LOGE(TAG, "Last error %s: 0x%x", message, error_code);
}
}
/*
* @brief Event handler registered to receive MQTT events
*
* This function is called by the MQTT client event loop.
*
* @param handler_args user data registered to the event.
* @param base Event base for the handler(always MQTT Base in this example).
* @param event_id The id for the received event.
* @param event_data The data for the event, esp_mqtt_event_handle_t.
*/
static void mqtt_event_handler(void *handler_args, esp_event_base_t base, int32_t event_id, void *event_data)
{
ESP_LOGD(TAG, "Event dispatched from event loop base=%s, event_id=%" PRIi32, base, event_id);
esp_mqtt_event_handle_t event = event_data;
esp_mqtt_client_handle_t client = event->client;
int msg_id;
switch ((esp_mqtt_event_id_t)event_id) {
case MQTT_EVENT_CONNECTED:
ESP_LOGI(TAG, "MQTT_EVENT_CONNECTED");
msg_id = esp_mqtt_client_publish(client, "/topic/qos1", "data_3", 0, 1, 0);
ESP_LOGI(TAG, "sent publish successful, msg_id=%d", msg_id);
msg_id = esp_mqtt_client_subscribe(client, "/topic/qos0", 0);
ESP_LOGI(TAG, "sent subscribe successful, msg_id=%d", msg_id);
msg_id = esp_mqtt_client_subscribe(client, "/topic/qos1", 1);
ESP_LOGI(TAG, "sent subscribe successful, msg_id=%d", msg_id);
msg_id = esp_mqtt_client_unsubscribe(client, "/topic/qos1");
ESP_LOGI(TAG, "sent unsubscribe successful, msg_id=%d", msg_id);
break;
case MQTT_EVENT_DISCONNECTED:
ESP_LOGI(TAG, "MQTT_EVENT_DISCONNECTED");
break;
case MQTT_EVENT_SUBSCRIBED:
ESP_LOGI(TAG, "MQTT_EVENT_SUBSCRIBED, msg_id=%d, return code=0x%02x ", event->msg_id, (uint8_t)*event->data);
msg_id = esp_mqtt_client_publish(client, "/topic/qos0", "data", 0, 0, 0);
ESP_LOGI(TAG, "sent publish successful, msg_id=%d", msg_id);
break;
case MQTT_EVENT_UNSUBSCRIBED:
ESP_LOGI(TAG, "MQTT_EVENT_UNSUBSCRIBED, msg_id=%d", event->msg_id);
break;
case MQTT_EVENT_PUBLISHED:
ESP_LOGI(TAG, "MQTT_EVENT_PUBLISHED, msg_id=%d", event->msg_id);
break;
case MQTT_EVENT_DATA:
ESP_LOGI(TAG, "MQTT_EVENT_DATA");
printf("TOPIC=%.*s\r\n", event->topic_len, event->topic);
printf("DATA=%.*s\r\n", event->data_len, event->data);
break;
case MQTT_EVENT_ERROR:
ESP_LOGI(TAG, "MQTT_EVENT_ERROR");
if (event->error_handle->error_type == MQTT_ERROR_TYPE_TCP_TRANSPORT) {
log_error_if_nonzero("reported from esp-tls", event->error_handle->esp_tls_last_esp_err);
log_error_if_nonzero("reported from tls stack", event->error_handle->esp_tls_stack_err);
log_error_if_nonzero("captured as transport's socket errno", event->error_handle->esp_transport_sock_errno);
ESP_LOGI(TAG, "Last errno string (%s)", strerror(event->error_handle->esp_transport_sock_errno));
}
break;
default:
ESP_LOGI(TAG, "Other event id:%d", event->event_id);
break;
}
}
static void mqtt_app_start(void)
{
const esp_mqtt_client_config_t mqtt_cfg = {
.broker.address.uri = CONFIG_BROKER_URI,
};
esp_mqtt_client_handle_t client = esp_mqtt_client_init(&mqtt_cfg);
/* The last argument may be used to pass data to the event handler, in this example mqtt_event_handler */
esp_mqtt_client_register_event(client, ESP_EVENT_ANY_ID, mqtt_event_handler, NULL);
esp_mqtt_client_start(client);
}
void app_main(void)
{
ESP_LOGI(TAG, "[APP] Startup..");
ESP_LOGI(TAG, "[APP] Free memory: %" PRIu32 " bytes", esp_get_free_heap_size());
ESP_LOGI(TAG, "[APP] IDF version: %s", esp_get_idf_version());
esp_log_level_set("*", ESP_LOG_INFO);
esp_log_level_set("mqtt_client", ESP_LOG_VERBOSE);
esp_log_level_set("mqtt_example", ESP_LOG_VERBOSE);
esp_log_level_set("transport_base", ESP_LOG_VERBOSE);
esp_log_level_set("transport_ws", ESP_LOG_VERBOSE);
esp_log_level_set("transport", ESP_LOG_VERBOSE);
esp_log_level_set("outbox", ESP_LOG_VERBOSE);
ESP_ERROR_CHECK(nvs_flash_init());
ESP_ERROR_CHECK(esp_netif_init());
ESP_ERROR_CHECK(esp_event_loop_create_default());
/* This helper function configures Wi-Fi or Ethernet, as selected in menuconfig.
* Read "Establishing Wi-Fi or Ethernet Connection" section in
* examples/protocols/README.md for more information about this function.
*/
ESP_ERROR_CHECK(example_connect());
mqtt_app_start();
}

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@@ -1,5 +0,0 @@
dependencies:
espressif/mqtt:
version: '*'
protocol_examples_common:
path: ${IDF_PATH}/examples/common_components/protocol_examples_common

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@@ -1,108 +0,0 @@
#!/usr/bin/env python
#
# SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
# SPDX-License-Identifier: Unlicense OR CC0-1.0
import logging
import os
import re
import sys
from threading import Event
from threading import Thread
import paho.mqtt.client as mqtt
import pytest
from pytest_embedded import Dut
from pytest_embedded_idf.utils import idf_parametrize
event_client_connected = Event()
event_stop_client = Event()
event_client_received_correct = Event()
message_log = ''
# The callback for when the client receives a CONNACK response from the server.
def on_connect(client, userdata, flags, rc): # type: (mqtt.Client, tuple, bool, str) -> None
_ = (userdata, flags)
print('Connected with result code ' + str(rc))
event_client_connected.set()
client.subscribe('/topic/qos0')
def mqtt_client_task(client): # type: (mqtt.Client) -> None
while not event_stop_client.is_set():
client.loop()
# The callback for when a PUBLISH message is received from the server.
def on_message(client, userdata, msg): # type: (mqtt.Client, tuple, mqtt.client.MQTTMessage) -> None
_ = userdata
global message_log
payload = msg.payload.decode()
if not event_client_received_correct.is_set() and payload == 'data':
client.publish('/topic/qos0', 'data_to_esp32')
if msg.topic == '/topic/qos0' and payload == 'data':
event_client_received_correct.set()
message_log += 'Received data:' + msg.topic + ' ' + payload + '\n'
@pytest.mark.ethernet
@idf_parametrize('target', ['esp32'], indirect=['target'])
def test_examples_protocol_mqtt_ws(dut): # type: (Dut) -> None
broker_url = ''
broker_port = 0
"""
steps: |
1. join AP and connects to ws broker
2. Test connects a client to the same broker
3. Test evaluates it received correct qos0 message
4. Test ESP32 client received correct qos0 message
"""
# check and log bin size
binary_file = os.path.join(dut.app.binary_path, 'mqtt_websocket.bin')
bin_size = os.path.getsize(binary_file)
logging.info('[Performance][mqtt_websocket_bin_size]: %s KB', bin_size // 1024)
# Look for host:port in sdkconfig
try:
value = re.search(r'\:\/\/([^:]+)\:([0-9]+)', dut.app.sdkconfig.get('BROKER_URI'))
assert value is not None
broker_url = value.group(1)
broker_port = int(value.group(2))
except Exception:
print('ENV_TEST_FAILURE: Cannot find broker url in sdkconfig')
raise
client = None
# 1. Test connects to a broker
try:
client = mqtt.Client(transport='websockets')
client.on_connect = on_connect
client.on_message = on_message
print('Connecting...')
client.connect(broker_url, broker_port, 60)
except Exception:
print(
'ENV_TEST_FAILURE: Unexpected error while connecting to broker {}: {}:'.format(
broker_url, sys.exc_info()[0]
)
)
raise
# Starting a py-client in a separate thread
thread1 = Thread(target=mqtt_client_task, args=(client,))
thread1.start()
try:
print('Connecting py-client to broker {}:{}...'.format(broker_url, broker_port))
if not event_client_connected.wait(timeout=30):
raise ValueError('ENV_TEST_FAILURE: Test script cannot connect to broker: {}'.format(broker_url))
try:
ip_address = dut.expect(r'IPv4 address: (\d+\.\d+\.\d+\.\d+)[^\d]', timeout=30)[0]
print('Connected to AP with IP: {}'.format(ip_address))
except Dut.ExpectTimeout:
print('ENV_TEST_FAILURE: Cannot connect to AP')
raise
print('Checking py-client received msg published from esp...')
if not event_client_received_correct.wait(timeout=30):
raise ValueError('Wrong data received, msg log: {}'.format(message_log))
print('Checking esp-client received msg published from py-client...')
dut.expect(r'DATA=data_to_esp32', timeout=30)
finally:
event_stop_client.set()
thread1.join()

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@@ -1,11 +0,0 @@
CONFIG_BROKER_URI="ws://${EXAMPLE_MQTT_BROKER_WS}/ws"
CONFIG_EXAMPLE_CONNECT_ETHERNET=y
CONFIG_EXAMPLE_CONNECT_WIFI=n
CONFIG_EXAMPLE_USE_INTERNAL_ETHERNET=y
CONFIG_EXAMPLE_ETH_PHY_IP101=y
CONFIG_EXAMPLE_ETH_MDC_GPIO=23
CONFIG_EXAMPLE_ETH_MDIO_GPIO=18
CONFIG_EXAMPLE_ETH_PHY_RST_GPIO=5
CONFIG_EXAMPLE_ETH_PHY_ADDR=1
CONFIG_EXAMPLE_CONNECT_IPV6=y
CONFIG_LWIP_CHECK_THREAD_SAFETY=y

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@@ -1,11 +0,0 @@
# The following four lines of boilerplate have to be in your project's CMakeLists
# in this exact order for cmake to work correctly
cmake_minimum_required(VERSION 3.16)
include($ENV{IDF_PATH}/tools/cmake/project.cmake)
# "Trim" the build. Include the minimal set of components, main, and anything it depends on.
idf_build_set_property(MINIMAL_BUILD ON)
project(mqtt_websocket_secure)
target_add_binary_data(${PROJECT_NAME}.elf "main/mqtt_eclipseprojects_io.pem" TEXT)

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@@ -1,73 +0,0 @@
| Supported Targets | ESP32 | ESP32-C2 | ESP32-C3 | ESP32-C5 | ESP32-C6 | ESP32-C61 | ESP32-H2 | ESP32-P4 | ESP32-S2 | ESP32-S3 |
| ----------------- | ----- | -------- | -------- | -------- | -------- | --------- | -------- | -------- | -------- | -------- |
# ESP-MQTT MQTT over WSS Sample application
(See the README.md file in the upper level 'examples' directory for more information about examples.)
This example connects to the broker mqtt.eclipseprojects.io over secure websockets and as a demonstration subscribes/unsubscribes and send a message on certain topic.
(Please note that the public broker is maintained by the community so may not be always available, for details please see this [disclaimer](https://iot.eclipse.org/getting-started/#sandboxes))
It uses ESP-MQTT library which implements mqtt client to connect to mqtt broker.
## How to use example
### Hardware Required
This example can be executed on any ESP32 board, the only required interface is WiFi and connection to internet.
### Configure the project
* Open the project configuration menu (`idf.py menuconfig`)
* Configure Wi-Fi or Ethernet under "Example Connection Configuration" menu. See "Establishing Wi-Fi or Ethernet Connection" section in [examples/protocols/README.md](../../README.md) for more details.
Note how to create a PEM certificate for mqtt.eclipseprojects.io:
PEM certificate for this example could be extracted from an openssl `s_client` command connecting to mqtt.eclipseprojects.io.
In case a host operating system has `openssl` and `sed` packages installed, one could execute the following command to download and save the root certificate to a file (Note for Windows users: Both Linux like environment or Windows native packages may be used).
```
echo "" | openssl s_client -showcerts -connect mqtt.eclipseprojects.io:443 | sed -n "1,/Root/d; /BEGIN/,/END/p" | openssl x509 -outform PEM >mqtt_eclipse_org.pem
```
Please note that this is not a general command for downloading a root certificate for an arbitrary host;
this command works with mqtt.eclipseprojects.io as the site provides root certificate in the chain, which then could be extracted
with text operation.
### Build and Flash
Build the project and flash it to the board, then run monitor tool to view serial output:
```
idf.py -p PORT flash monitor
```
(To exit the serial monitor, type ``Ctrl-]``.)
See the Getting Started Guide for full steps to configure and use ESP-IDF to build projects.
## Example Output
```
I (3714) event: sta ip: 192.168.0.139, mask: 255.255.255.0, gw: 192.168.0.2
I (3714) system_api: Base MAC address is not set, read default base MAC address from BLK0 of EFUSE
I (3964) MQTT_CLIENT: Sending MQTT CONNECT message, type: 1, id: 0000
I (4164) MQTTWSS_EXAMPLE: MQTT_EVENT_CONNECTED
I (4174) MQTTWSS_EXAMPLE: sent publish successful, msg_id=41464
I (4174) MQTTWSS_EXAMPLE: sent subscribe successful, msg_id=17886
I (4174) MQTTWSS_EXAMPLE: sent subscribe successful, msg_id=42970
I (4184) MQTTWSS_EXAMPLE: sent unsubscribe successful, msg_id=50241
I (4314) MQTTWSS_EXAMPLE: MQTT_EVENT_PUBLISHED, msg_id=41464
I (4484) MQTTWSS_EXAMPLE: MQTT_EVENT_SUBSCRIBED, msg_id=17886
I (4484) MQTTWSS_EXAMPLE: sent publish successful, msg_id=0
I (4684) MQTTWSS_EXAMPLE: MQTT_EVENT_SUBSCRIBED, msg_id=42970
I (4684) MQTTWSS_EXAMPLE: sent publish successful, msg_id=0
I (4884) MQTT_CLIENT: deliver_publish, message_length_read=19, message_length=19
I (4884) MQTTWSS_EXAMPLE: MQTT_EVENT_DATA
TOPIC=/topic/qos0
DATA=data
I (5194) MQTT_CLIENT: deliver_publish, message_length_read=19, message_length=19
I (5194) MQTTWSS_EXAMPLE: MQTT_EVENT_DATA
TOPIC=/topic/qos0
DATA=data
```

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@@ -1,3 +0,0 @@
idf_component_register(SRCS "app_main.c"
PRIV_REQUIRES mqtt esp_wifi nvs_flash
INCLUDE_DIRS ".")

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@@ -1,20 +0,0 @@
menu "Example Configuration"
config BROKER_URI
string "Broker URL"
default "wss://mqtt.eclipseprojects.io:443/mqtt"
help
URL of an mqtt broker which this example connects to.
config BROKER_CERTIFICATE_OVERRIDE
string "Server certificate override"
default ""
help
Please leave empty if server certificate included from a textfile; otherwise fill in a base64 part of PEM
format certificate
config BROKER_CERTIFICATE_OVERRIDDEN
bool
default y if BROKER_CERTIFICATE_OVERRIDE != ""
endmenu

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@@ -1,135 +0,0 @@
/* MQTT over Secure Websockets Example
This example code is in the Public Domain (or CC0 licensed, at your option.)
Unless required by applicable law or agreed to in writing, this
software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
CONDITIONS OF ANY KIND, either express or implied.
*/
#include <stdio.h>
#include <stdint.h>
#include <stddef.h>
#include <string.h>
#include "esp_wifi.h"
#include "esp_system.h"
#include "nvs_flash.h"
#include "esp_event.h"
#include "esp_netif.h"
#include "protocol_examples_common.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/semphr.h"
#include "freertos/queue.h"
#include "lwip/sockets.h"
#include "lwip/dns.h"
#include "lwip/netdb.h"
#include "esp_log.h"
#include "mqtt_client.h"
static const char *TAG = "mqttwss_example";
#if CONFIG_BROKER_CERTIFICATE_OVERRIDDEN == 1
static const uint8_t mqtt_eclipseprojects_io_pem_start[] = "-----BEGIN CERTIFICATE-----\n" CONFIG_BROKER_CERTIFICATE_OVERRIDE "\n-----END CERTIFICATE-----";
#else
extern const uint8_t mqtt_eclipseprojects_io_pem_start[] asm("_binary_mqtt_eclipseprojects_io_pem_start");
#endif
extern const uint8_t mqtt_eclipseprojects_io_pem_end[] asm("_binary_mqtt_eclipseprojects_io_pem_end");
static esp_err_t mqtt_event_handler_cb(esp_mqtt_event_handle_t event)
{
esp_mqtt_client_handle_t client = event->client;
int msg_id;
// your_context_t *context = event->context;
switch (event->event_id) {
case MQTT_EVENT_CONNECTED:
ESP_LOGI(TAG, "MQTT_EVENT_CONNECTED");
msg_id = esp_mqtt_client_subscribe(client, "/topic/qos0", 0);
ESP_LOGI(TAG, "sent subscribe successful, msg_id=%d", msg_id);
msg_id = esp_mqtt_client_subscribe(client, "/topic/qos1", 1);
ESP_LOGI(TAG, "sent subscribe successful, msg_id=%d", msg_id);
msg_id = esp_mqtt_client_unsubscribe(client, "/topic/qos1");
ESP_LOGI(TAG, "sent unsubscribe successful, msg_id=%d", msg_id);
break;
case MQTT_EVENT_DISCONNECTED:
ESP_LOGI(TAG, "MQTT_EVENT_DISCONNECTED");
break;
case MQTT_EVENT_SUBSCRIBED:
ESP_LOGI(TAG, "MQTT_EVENT_SUBSCRIBED, msg_id=%d, return code=0x%02x ", event->msg_id, (uint8_t)*event->data);
msg_id = esp_mqtt_client_publish(client, "/topic/qos0", "data", 0, 0, 0);
ESP_LOGI(TAG, "sent publish successful, msg_id=%d", msg_id);
break;
case MQTT_EVENT_UNSUBSCRIBED:
ESP_LOGI(TAG, "MQTT_EVENT_UNSUBSCRIBED, msg_id=%d", event->msg_id);
break;
case MQTT_EVENT_PUBLISHED:
ESP_LOGI(TAG, "MQTT_EVENT_PUBLISHED, msg_id=%d", event->msg_id);
break;
case MQTT_EVENT_DATA:
ESP_LOGI(TAG, "MQTT_EVENT_DATA");
printf("TOPIC=%.*s\r\n", event->topic_len, event->topic);
printf("DATA=%.*s\r\n", event->data_len, event->data);
break;
case MQTT_EVENT_ERROR:
ESP_LOGI(TAG, "MQTT_EVENT_ERROR");
break;
default:
ESP_LOGI(TAG, "Other event id:%d", event->event_id);
break;
}
return ESP_OK;
}
static void mqtt_event_handler(void *handler_args, esp_event_base_t base, int32_t event_id, void *event_data)
{
/* The argument passed to esp_mqtt_client_register_event can de accessed as handler_args*/
ESP_LOGD(TAG, "Event dispatched from event loop base=%s, event_id=%" PRIi32, base, event_id);
mqtt_event_handler_cb(event_data);
}
static void mqtt_app_start(void)
{
const esp_mqtt_client_config_t mqtt_cfg = {
.broker.address.uri = CONFIG_BROKER_URI,
.broker.verification.certificate = (const char *)mqtt_eclipseprojects_io_pem_start,
};
ESP_LOGI(TAG, "[APP] Free memory: %" PRIu32 " bytes", esp_get_free_heap_size());
esp_mqtt_client_handle_t client = esp_mqtt_client_init(&mqtt_cfg);
/* The last argument may be used to pass data to the event handler, in this example mqtt_event_handler */
esp_mqtt_client_register_event(client, ESP_EVENT_ANY_ID, mqtt_event_handler, NULL);
esp_mqtt_client_start(client);
}
void app_main(void)
{
ESP_LOGI(TAG, "[APP] Startup..");
ESP_LOGI(TAG, "[APP] Free memory: %" PRIu32 " bytes", esp_get_free_heap_size());
ESP_LOGI(TAG, "[APP] IDF version: %s", esp_get_idf_version());
esp_log_level_set("*", ESP_LOG_INFO);
esp_log_level_set("mqtt_client", ESP_LOG_VERBOSE);
esp_log_level_set("mqtt_example", ESP_LOG_VERBOSE);
esp_log_level_set("transport_base", ESP_LOG_VERBOSE);
esp_log_level_set("transport", ESP_LOG_VERBOSE);
esp_log_level_set("outbox", ESP_LOG_VERBOSE);
ESP_ERROR_CHECK(nvs_flash_init());
ESP_ERROR_CHECK(esp_netif_init());
ESP_ERROR_CHECK(esp_event_loop_create_default());
/* This helper function configures Wi-Fi or Ethernet, as selected in menuconfig.
* Read "Establishing Wi-Fi or Ethernet Connection" section in
* examples/protocols/README.md for more information about this function.
*/
ESP_ERROR_CHECK(example_connect());
mqtt_app_start();
}

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@@ -1,5 +0,0 @@
dependencies:
espressif/mqtt:
version: '*'
protocol_examples_common:
path: ${IDF_PATH}/examples/common_components/protocol_examples_common

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@@ -1,30 +0,0 @@
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

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@@ -1,111 +0,0 @@
#!/usr/bin/env python
#
# SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
# SPDX-License-Identifier: Unlicense OR CC0-1.0
import logging
import os
import re
import ssl
import sys
from threading import Event
from threading import Thread
import paho.mqtt.client as mqtt
import pexpect
import pytest
from pytest_embedded import Dut
from pytest_embedded_idf.utils import idf_parametrize
event_client_connected = Event()
event_stop_client = Event()
event_client_received_correct = Event()
message_log = ''
# The callback for when the client receives a CONNACK response from the server.
def on_connect(client, userdata, flags, rc): # type: (mqtt.Client, tuple, bool, str) -> None
_ = (userdata, flags)
print('Connected with result code ' + str(rc))
event_client_connected.set()
client.subscribe('/topic/qos0')
def mqtt_client_task(client): # type: (mqtt.Client) -> None
while not event_stop_client.is_set():
client.loop()
# The callback for when a PUBLISH message is received from the server.
def on_message(client, userdata, msg): # type: (mqtt.Client, tuple, mqtt.client.MQTTMessage) -> None
_ = userdata
global message_log
payload = msg.payload.decode()
if not event_client_received_correct.is_set() and payload == 'data':
client.publish('/topic/qos0', 'data_to_esp32')
if msg.topic == '/topic/qos0' and payload == 'data':
event_client_received_correct.set()
message_log += 'Received data:' + msg.topic + ' ' + payload + '\n'
@pytest.mark.ethernet
@idf_parametrize('target', ['esp32'], indirect=['target'])
def test_examples_protocol_mqtt_wss(dut): # type: (Dut) -> None
broker_url = ''
broker_port = 0
"""
steps: |
1. join AP and connects to wss broker
2. Test connects a client to the same broker
3. Test evaluates it received correct qos0 message
4. Test ESP32 client received correct qos0 message
"""
# check and log bin size
binary_file = os.path.join(dut.app.binary_path, 'mqtt_websocket_secure.bin')
bin_size = os.path.getsize(binary_file)
logging.info('[Performance][mqtt_websocket_secure_bin_size]: %s KB', bin_size // 1024)
# Look for host:port in sdkconfig
try:
value = re.search(r'\:\/\/([^:]+)\:([0-9]+)', dut.app.sdkconfig.get('BROKER_URI'))
assert value is not None
broker_url = value.group(1)
broker_port = int(value.group(2))
except Exception:
print('ENV_TEST_FAILURE: Cannot find broker url in sdkconfig')
raise
client = None
# 1. Test connects to a broker
try:
client = mqtt.Client(transport='websockets')
client.on_connect = on_connect
client.on_message = on_message
client.tls_set(None, None, None, cert_reqs=ssl.CERT_NONE, tls_version=ssl.PROTOCOL_TLSv1_2, ciphers=None)
print('Connecting...')
client.connect(broker_url, broker_port, 60)
except Exception:
print(
'ENV_TEST_FAILURE: Unexpected error while connecting to broker {}: {}:'.format(
broker_url, sys.exc_info()[0]
)
)
raise
# Starting a py-client in a separate thread
thread1 = Thread(target=mqtt_client_task, args=(client,))
thread1.start()
try:
print('Connecting py-client to broker {}:{}...'.format(broker_url, broker_port))
if not event_client_connected.wait(timeout=30):
raise ValueError('ENV_TEST_FAILURE: Test script cannot connect to broker: {}'.format(broker_url))
try:
ip_address = dut.expect(r'IPv4 address: (\d+\.\d+\.\d+\.\d+)[^\d]', timeout=30)[0]
print('Connected to AP with IP: {}'.format(ip_address))
except pexpect.TIMEOUT:
print('ENV_TEST_FAILURE: Cannot connect to AP')
raise
print('Checking py-client received msg published from esp...')
if not event_client_received_correct.wait(timeout=30):
raise ValueError('Wrong data received, msg log: {}'.format(message_log))
print('Checking esp-client received msg published from py-client...')
dut.expect(r'DATA=data_to_esp32', timeout=30)
finally:
event_stop_client.set()
thread1.join()

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@@ -1,13 +0,0 @@
CONFIG_BROKER_URI="wss://${EXAMPLE_MQTT_BROKER_WSS}/ws"
CONFIG_BROKER_CERTIFICATE_OVERRIDE="${EXAMPLE_MQTT_BROKER_CERTIFICATE}"
CONFIG_EXAMPLE_CONNECT_ETHERNET=y
CONFIG_EXAMPLE_CONNECT_WIFI=n
CONFIG_EXAMPLE_USE_INTERNAL_ETHERNET=y
CONFIG_EXAMPLE_ETH_PHY_IP101=y
CONFIG_EXAMPLE_ETH_MDC_GPIO=23
CONFIG_EXAMPLE_ETH_MDIO_GPIO=18
CONFIG_EXAMPLE_ETH_PHY_RST_GPIO=5
CONFIG_EXAMPLE_ETH_PHY_ADDR=1
CONFIG_EXAMPLE_CONNECT_IPV6=y
CONFIG_LWIP_TCPIP_CORE_LOCKING=y
CONFIG_LWIP_CHECK_THREAD_SAFETY=y