httpd: Support user_ctx in websocket handler callback request

Closes https://github.com/espressif/esp-idf/issues/6538

components/esp_http_server/src/esp_httpd_priv.h

@@ -77,6 +77,7 @@ struct sock_db {
     bool ws_close;                          /*!< Set to true to close the socket later (when WS Close frame received) */
     esp_err_t (*ws_handler)(httpd_req_t *r);   /*!< WebSocket handler, leave to null if it's not WebSocket */
     bool ws_control_frames;                         /*!< WebSocket flag indicating that control frames should be passed to user handlers */
+    void *ws_user_ctx;                         /*!< Pointer to user context data which will be available to handler for websocket*/
 #endif
 };
 

components/esp_http_server/src/httpd_parse.c

@@ -722,6 +722,7 @@ static void httpd_req_cleanup(httpd_req_t *r)
     ra->sd = NULL;
     r->handle = NULL;
     r->aux = NULL;
+    r->user_ctx = NULL;
 }
 
 /* Function that processes incoming TCP data and
@@ -752,6 +753,8 @@ esp_err_t httpd_req_new(struct httpd_data *hd, struct sock_db *sd)
     esp_err_t ret;
 
 #ifdef CONFIG_HTTPD_WS_SUPPORT
+    /* Copy user_ctx to the request */
+    r->user_ctx = sd->ws_user_ctx;
     /* Handle WebSocket */
     ESP_LOGD(TAG, LOG_FMT("New request, has WS? %s, sd->ws_handler valid? %s, sd->ws_close? %s"),
              sd->ws_handshake_done ? "Yes" : "No",

components/esp_http_server/src/httpd_uri.c

@@ -329,6 +329,7 @@ esp_err_t httpd_uri(struct httpd_data *hd)
         aux->sd->ws_handshake_done = true;
         aux->sd->ws_handler = uri->handler;
         aux->sd->ws_control_frames = uri->handle_ws_control_frames;
+        aux->sd->ws_user_ctx = uri->user_ctx;
     }
 #endif