Does mod_fsock.fsock_setblock work in non Windows platform?

[Darío Cutillas Carrillo]

Running in Linux, I could not find any way to make fsock_setblock make UDP receiving non-blocking.

Private
    int socket;
    string from_ip;
    byte bytes[256];
    int port;
    int received_bytes;
End 
Begin
    fsock_init ( 0 );
    socket = udpsock_open ();
    // I have tried with fsock_setblock ( socket, 1 ) and fsock_setblock ( socket, 0 ) and fsock_setblock ( socket, -1 )
    say ( "Result setblock: " + fsock_setblock ( socket, 1 ) );
    fsock_bind ( socket, 11000 );

    timer [0] = 0;

    Loop
        If ( timer[ 0 ] > 300 )

            received_bytes = udpsock_recv ( socket, 
                &bytes, 
                3, 
                &from_ip, 
                &port );

            say ( "Received: " + received_bytes );
            say(bytes[0]);
            say(bytes[1]);
            say(bytes[2]);

            If ( received_bytes > 0 )
                // multiplayer_process_receive_frame ( &bytes );
            End

            timer[ 0 ] = 0;
        End

        Frame;
    End

OnExit:
    fsock_close(socket);
    fsock_quit ();
End

[Darío Cutillas Carrillo]

Modifying libsocket.c would let me achieve desired behaviour:

int libsocket_setblock(int fd, u_long ulVal) {
#ifdef WIN32
    return (ioctlsocket(fd, FIONBIO, &ulVal));
#else
    //Original code: return (fcntl(fd, O_NONBLOCK, ulVal));

    int flags = fcntl(fd, F_GETFL, 0);

    if (flags < 0) 
        return -1;

    flags = (ulVal == 0) ? (flags &~O_NONBLOCK) : (flags|O_NONBLOCK);

    return fcntl(fd, F_SETFL, flags|O_NONBLOCK);
#endif
}

Is this a bug? Or am I doing something wrong?

[Darío Cutillas Carrillo]

Desired behaviour is that the loop executes no matter whether data has actually been sent.

[Darío Cutillas Carrillo]

I have not tried in any other platform than Linux, Kernel 4.4.9-300

[Darío Cutillas Carrillo]

Perhaps makes more sense with the name of the function to have flags = (ulVal != 0) ? (flags &~O_NONBLOCK) : (flags|O_NONBLOCK);

[Joseba Echevarria García]

Merged in dacucar/pixtudio-dacucar (pull request #2)

Fix #60 Non-blocking mode not working in Linux

→ <<cset 6fa6a8ca2673>>