NAME

       wslay_event_send - Send any pending messages

SYNOPSIS

       #include <wslay/wslay.h>

       int wslay_event_send(wslay_event_context_ptr ctx)

DESCRIPTION

       wslay_event_send()  sends  queued  messages  to  peer.   When  sending  a message, it uses
       wslay_event_send_callback function.  Single  call  of  wslay_event_send()  sends  multiple
       messages until wslay_event_send_callback sets error code WSLAY_ERR_WOULDBLOCK.

       If    ctx   is   initialized   for   WebSocket   client   use,   wslay_event_send()   uses
       wslay_event_genmask_callback to get new mask key.

       When a message queued using wslay_event_queue_fragmented_msg() is sent, wslay_event_send()
       invokes wslay_event_fragmented_msg_callback for that message.

       After  close  control  frame  is sent, this function calls wslay_event_set_write_enabled()
       with second argument 0 to disable further transmission to peer.

       If there are any pending messages, wslay_event_want_write() returns 1,  otherwise  returns
       0.

       In  case  of  a  fatal  error  which  leads  to  negative return code, this function calls
       wslay_event_set_write_enabled() with second argument 0 to disable further transmission  to
       peer.

RETURN VALUE

       wslay_event_send() returns 0 if it succeeds, or one of the following negative error codes:

       WSLAY_ERR_CALLBACK_FAILURE
              User defined callback function is failed.

       WSLAY_ERR_NOMEM
              Out of memory.

       When  negative  error  code  is  returned,  application  must not make any further call of
       wslay_event_send() and must close WebSocket connection.

SEE ALSO

       wslay_event_queue_fragmented_msg(),                       wslay_event_set_write_enabled(),
       wslay_event_want_write()

AUTHOR

       Tatsuhiro Tsujikawa

COPYRIGHT

       2021, 2015, Tatsuhiro Tsujikawa

@PACKAGE_VERSION@                          Nov 07, 2021                       WSLAY_EVENT_SEND(3)