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esp_http_server : Logging of purged data to monitor made configurable

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List of changes:
* Kconfig option HTTPD_LOG_PURGE_DATA enables logging of purged data
* Kconfig option HTTPD_PURGE_BUF_LEN sets purge buffer length
* Purged data is logged in hex

Closes https://github.com/espressif/esp-idf/issues/3359
This commit is contained in:
Anurag Kar
2019-05-06 13:06:40 +05:30
parent df61612f8f
commit 6bf423d1e1
2 changed files with 34 additions and 8 deletions
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23
components/esp_http_server/src/httpd_parse.c
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@@ -711,18 +711,25 @@ esp_err_t httpd_req_delete(struct httpd_data *hd)
/* Finish off reading any pending/leftover data */
while (ra->remaining_len) {
/* Any length small enough not to overload the stack, but large
* enough to finish off the buffers fast
*/
char dummy[32];
int recv_len = MIN(sizeof(dummy) - 1, ra->remaining_len);
int ret = httpd_req_recv(r, dummy, recv_len);
if (ret < 0) {
* enough to finish off the buffers fast */
char dummy[CONFIG_HTTPD_PURGE_BUF_LEN];
int recv_len = MIN(sizeof(dummy), ra->remaining_len);
recv_len = httpd_req_recv(r, dummy, recv_len);
if (recv_len < 0) {
httpd_req_cleanup(r);
return ESP_FAIL;
}
dummy[ret] = '\0';
ESP_LOGD(TAG, LOG_FMT("purging data : %s"), dummy);
ESP_LOGD(TAG, LOG_FMT("purging data size : %d bytes"), recv_len);
#ifdef CONFIG_HTTPD_LOG_PURGE_DATA
/* Enabling this will log discarded binary HTTP content data at
* Debug level. For large content data this may not be desirable
* as it will clutter the log */
ESP_LOGD(TAG, "================= PURGED DATA =================");
ESP_LOG_BUFFER_HEX_LEVEL(TAG, dummy, recv_len, ESP_LOG_DEBUG);
ESP_LOGD(TAG, "===============================================");
#endif
}
httpd_req_cleanup(r);