Websocket is not properly reciving

[A_A1990]

i'm using a websocket server. I have initialized it following a tutorial. The websocket sends a timestamp every 3 seconds and receives text asynchronously. Sending is going very well. However, receiving print strange values or giving errors.

I'm using esp32s3.
esp-idf version 5.1.

I have used Postman to receive and send data. In addition of some extensions on Chrome.

I have used Wireshark to analyze the data. It shows that messages from ESP are not masked, and messages sending to ESP are masked.

My code as follow:

Code: Select all

tatic esp_err_t on_ws_url(httpd_req_t *r)
{
    ESP_LOGI("ES","URL: %s",r->uri);
    client_session_id = httpd_req_to_sockfd(r);
    websocket_closed = false;
    if(r->method == HTTP_GET){
        return ESP_OK;
    }
    
    httpd_ws_frame_t ws_pkt;
    memset(&ws_pkt,0,sizeof(httpd_ws_frame_t()));
    ws_pkt.type = HTTPD_WS_TYPE_TEXT;
    
    ws_pkt.payload = malloc(WS_MAX_SIZE);
    httpd_ws_recv_frame(r,&ws_pkt,WS_MAX_SIZE);
    
    printf("Web_socket: %.*s\n", ws_pkt.len,ws_pkt.payload);
    free(ws_pkt.payload);
    
   

Errors are:

• Failed to read header byte (socket FD invalid), closing socket now
  Failed to receive payload
  httpd_ws_recv_frame: WS frame is not properly masked.

In the attachment is a screenshot of the random output, I'm sending the same message "hello".
So, it is a kind of random error.

I want to know if the problem is from my code or if it is from the library.
Any suggestions?