fix(websocket): prevent connection abort on write timeout

Author: surengab

components/esp_websocket_client/esp_websocket_client.c

@@ -669,6 +669,12 @@ static int esp_websocket_client_send_with_exact_opcode(esp_websocket_client_hand
         wlen = esp_transport_ws_send_raw(client->transport, opcode, (char *)client->tx_buffer, need_write,
                                          (timeout == portMAX_DELAY) ? -1 : timeout * portTICK_PERIOD_MS);
         if (wlen < 0 || (wlen == 0 && need_write != 0)) {
+            if (wlen == 0 && timeout != portMAX_DELAY && errno == 0) {
+                // Timeout, stop sending and return what we have
+                ret = widx;
+                esp_websocket_free_buf(client, true);
+                goto unlock_and_return;
+            }
             ret = wlen;
             esp_websocket_free_buf(client, true);
             esp_tls_error_handle_t error_handle = esp_transport_get_error_handle(client->transport);