Function socket_send

Plugins/UnLuaExtensions/LuaSocket/Source/src/usocket.cpp:199–228

-------------------------------------------------------------------------*\ * Send with timeout \*-------------------------------------------------------------------------*/

* Send with timeout
\*-------------------------------------------------------------------------*/
int socket_send(p_socket ps, const char *data, size_t count,
        size_t *sent, p_timeout tm)
{
    int err;
    *sent = 0;
    /* avoid making system calls on closed sockets */
    if (*ps == SOCKET_INVALID) return IO_CLOSED;
    /* loop until we send something or we give up on error */
    for ( ;; ) {
        long put = (long) send(*ps, data, count, 0);
        /* if we sent anything, we are done */
        if (put >= 0) {
            *sent = put;
            return IO_DONE;
        }
        err = errno;
        /* EPIPE means the connection was closed */
        if (err == EPIPE) return IO_CLOSED;
        /* EPROTOTYPE means the connection is being closed (on Yosemite!)*/
        if (err == EPROTOTYPE) continue;
        /* we call was interrupted, just try again */
        if (err == EINTR) continue;
        /* if failed fatal reason, report error */
        if (err != EAGAIN) return err;
        /* wait until we can send something or we timeout */
        if ((err = socket_waitfd(ps, WAITFD_W, tm)) != IO_DONE) return err;
    }
    /* can't reach here */
    return IO_UNKNOWN;
}

/*-------------------------------------------------------------------------*\
* Sendto with timeout