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Currently, several example dependencies rely on the fact that all registered components are added to the build, along with components specified in common requirements. This results in longer build times because even unused components must be built. Switch all examples to use idf_minimal_build to compile only the components actually required by the example. Signed-off-by: Frantisek Hrbata <frantisek.hrbata@espressif.com>
| Supported Targets | ESP32 | ESP32-C2 | ESP32-C3 | ESP32-C5 | ESP32-C6 | ESP32-C61 | ESP32-H2 | ESP32-P4 | ESP32-S2 | ESP32-S3 |
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HTTPD Server Persistent Sockets Example
The Example consists of HTTPD server persistent sockets demo. This sort of persistency enables the server to have independent sessions/contexts per client.
How to use example
Hardware Required
- A development board with ESP32/ESP32-S2/ESP32-C3 SoC (e.g., ESP32-DevKitC, ESP-WROVER-KIT, etc.)
- A USB cable for power supply and programming
Configure the project
idf.py menuconfig
- Open the project configuration menu (
idf.py menuconfig) to configure Wi-Fi or Ethernet. See "Establishing Wi-Fi or Ethernet Connection" section in examples/protocols/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
(Replace PORT with the name of the serial port to use.)
(To exit the serial monitor, type Ctrl-].)
See the Getting Started Guide for full steps to configure and use ESP-IDF to build projects.
Test the example
In order to test the HTTPD server persistent sockets demo :
- run the test script "python scripts/adder.py <IP> <port> <N>"
- the provided test script sends (POST) numbers from 1 to N to the server which has a URI POST handler for adding these numbers into an accumulator that is valid throughout the lifetime of the connection socket, hence persistent
- the script does a GET before closing and displays the final value of the accumulator
See the README.md file in the upper level 'examples' directory for more information about examples.
Example Output
I (9570) example_connect: - IPv4 address: 192.168.194.219
I (9580) example_connect: - IPv6 address: fe80:0000:0000:0000:266f:28ff:fe80:2c74, type: ESP_IP6_ADDR_IS_LINK_LOCAL
I (9590) example: Starting server on port: '80'
I (9600) example: Registering URI handlers
I (12860) example: /adder visitor count = 1
I (12860) example: /adder PUT handler read 0
I (12860) example: /adder PUT allocating new session
I (13070) example: /adder visitor count = 2
I (13070) example: /adder handler read 1
I (13090) example: /adder visitor count = 3
I (13090) example: /adder handler read 2
I (13110) example: /adder visitor count = 4
I (13110) example: /adder handler read 3
I (13170) example: /adder visitor count = 5
I (13170) example: /adder handler read 4
I (13190) example: /adder visitor count = 6
I (13190) example: /adder handler read 5
I (13210) example: /adder visitor count = 7
I (13210) example: /adder handler read 6
I (13270) example: /adder visitor count = 8
I (13270) example: /adder handler read 7
I (13290) example: /adder visitor count = 9
I (13290) example: /adder handler read 8
I (13300) example: /adder visitor count = 10
I (13310) example: /adder handler read 9
I (13370) example: /adder visitor count = 11
I (13370) example: /adder handler read 10
I (13390) example: /adder visitor count = 12
I (13390) example: /adder GET handler send 55
I (13420) example: /adder Free Context function called