void zmq::stream_engine_t::plug (io_thread_t *io_thread_,
session_base_t *session_)
{
zmq_assert (!plugged);
plugged = true;
// Connect to session object.
zmq_assert (!session);
zmq_assert (session_);
session = session_;
socket = session-> get_socket ();
// Connect to I/O threads poller object.
io_object_t::plug (io_thread_);
handle = add_fd (s);
io_error = false;
if (options.raw_socket) {
// no handshaking for raw sock, instantiate raw encoder and decoders
encoder = new (std::nothrow) raw_encoder_t (out_batch_size);
alloc_assert (encoder);
decoder = new (std::nothrow) raw_decoder_t (in_batch_size);
alloc_assert (decoder);
// disable handshaking for raw socket
handshaking = false;
next_msg = &stream_engine_t::pull_msg_from_session;
process_msg = &stream_engine_t::push_msg_to_session;
if (options.raw_notify) {
// For raw sockets, send an initial 0-length message to the
// application so that it knows a peer has connected.
msg_t connector;
connector.init();
push_msg_to_session (&connector);
connector.close();
session->flush ();
}
}
else {
// start optional timer, to prevent handshake hanging on no input
set_handshake_timer ();
// Send the 'length' and 'flags' fields of the identity message.
// The 'length' field is encoded in the long format.
outpos = greeting_send;
outpos [outsize++] = 0xff;
put_uint64 (&outpos [outsize], options.identity_size + 1);
outsize += 8;
outpos [outsize++] = 0x7f;
}
set_pollin (handle);
set_pollout (handle);
// Flush all the data that may have been already received downstream.
in_event ();
}
int zmq::stream_engine_t::write_subscription_msg (msg_t *msg_)
{
msg_t subscription;
// Inject the subscription message, so that also
// ZMQ 2.x peers receive published messages.
int rc = subscription.init_size (1);
errno_assert (rc == 0);
*(unsigned char*) subscription.data () = 1;
rc = session->push_msg (&subscription);
if (rc == -1)
return -1;
process_msg = &stream_engine_t::push_msg_to_session;
return push_msg_to_session (msg_);
}
int zmq::stream_engine_t::push_raw_msg_to_session (msg_t *msg_) {
if (metadata)
msg_->set_metadata(metadata);
return push_msg_to_session(msg_);
}
