Mongoose Embedded Webserver

Question

This code is taken from the example program in Mongoose embedded web server.

The event MG_NEW_REQUEST is called twice. Is this the expected behavior? Why would it process the same request twice? How would you prevent this from doing so?

int i =0;
static void *callback(enum mg_event event,
                      struct mg_connection *conn,
                      const struct mg_request_info *request_info)
{
    if (event == MG_NEW_REQUEST)
    {    
        i++;
        printf("%d \n", i);

        // Echo requested URI back to the client
        mg_printf(conn, "HTTP/1.1 200 OK\r\n"
              "Content-Type: text/html\r\n\r\n"
              "%s", request_info->uri);    
        mg_printf(conn, "Hello World!!"
                  "%s", "");

        //request_info->query_string
        return const_cast<char *>("done");  // Mark as processed
    }
    else
    {
        return NULL;
    }
}

int main(void) {
    struct mg_context *ctx;
    const char *options[] = {"listening_ports", "8080", NULL};

    printf("Test web server, open browser to http://localhost:8080 ");
    ctx = mg_start(&callback, NULL, options);
    getchar();  // Wait until user hits "enter"
    mg_stop(ctx);

    return 0;
}

It may be that the client (or perhaps the server) gets confused that you don't set the Content-Length when replying. — Eugen Constantin Dinca, Jun 12 '12 at 00:03
Did you sniff the packets to see if the client was making two requests? — Captain Obvlious, Jun 12 '12 at 00:21
FYI if you put
around your code it will not receive syntax highlighting. — Captain Obvlious, Jun 12 '12 at 00:24

score 1 · Answer 1 · answered Dec 01 '12 at 10:17

1

I assume that the browser does in fact two requests. One for the url / and another for /favicon.ico.

answered Dec 01 '12 at 10:17

René Nyffenegger

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1

That is the correct answer. I suggest to log the requested URI to make sure it is. – valenok Dec 27 '13 at 19:42

Mongoose Embedded Webserver

1 Answers1