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/*
Copyright (c) 2007-2010 iMatix Corporation
This file is part of 0MQ.
0MQ is free software; you can redistribute it and/or modify it under
the terms of the Lesser GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
0MQ is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
Lesser GNU General Public License for more details.
You should have received a copy of the Lesser GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "../include/zmq.h"
#include "xrep.hpp"
#include "err.hpp"
#include "pipe.hpp"
zmq::xrep_t::xrep_t (class app_thread_t *parent_) :
socket_base_t (parent_)
{
options.requires_in = true;
options.requires_out = true;
// On connect, pipes are created only after initial handshaking.
// That way we are aware of the peer's identity when binding to the pipes.
options.immediate_connect = false;
// XREP socket adds identity to inbound messages and strips identity
// from the outbound messages.
options.traceroute = true;
}
zmq::xrep_t::~xrep_t ()
{
}
void zmq::xrep_t::xattach_pipes (class reader_t *inpipe_,
class writer_t *outpipe_, const blob_t &peer_identity_)
{
zmq_assert (inpipe_ && outpipe_);
fq.attach (inpipe_);
// TODO: What if new connection has same peer identity as the old one?
bool ok = outpipes.insert (std::make_pair (
peer_identity_, outpipe_)).second;
zmq_assert (ok);
}
void zmq::xrep_t::xdetach_inpipe (class reader_t *pipe_)
{
zmq_assert (pipe_);
fq.detach (pipe_);
}
void zmq::xrep_t::xdetach_outpipe (class writer_t *pipe_)
{
for (outpipes_t::iterator it = outpipes.begin ();
it != outpipes.end (); ++it)
if (it->second == pipe_) {
outpipes.erase (it);
return;
}
zmq_assert (false);
}
void zmq::xrep_t::xkill (class reader_t *pipe_)
{
fq.kill (pipe_);
}
void zmq::xrep_t::xrevive (class reader_t *pipe_)
{
fq.revive (pipe_);
}
void zmq::xrep_t::xrevive (class writer_t *pipe_)
{
}
int zmq::xrep_t::xsetsockopt (int option_, const void *optval_,
size_t optvallen_)
{
errno = EINVAL;
return -1;
}
int zmq::xrep_t::xsend (zmq_msg_t *msg_, int flags_)
{
unsigned char *data = (unsigned char*) zmq_msg_data (msg_);
size_t size = zmq_msg_size (msg_);
// Check whether the message is well-formed.
zmq_assert (size >= 1);
zmq_assert (size_t (*data + 1) <= size);
// Find the corresponding outbound pipe. If there's none, just drop the
// message.
// TODO: There's an allocation here! It's the critical path! Get rid of it!
blob_t identity (data + 1, *data);
outpipes_t::iterator it = outpipes.find (identity);
if (it == outpipes.end ()) {
int rc = zmq_msg_close (msg_);
zmq_assert (rc == 0);
rc = zmq_msg_init (msg_);
zmq_assert (rc == 0);
return 0;
}
// Push message to the selected pipe.
if (!it->second->write (msg_)) {
errno = EAGAIN;
return -1;
}
it->second->flush ();
// Detach the message from the data buffer.
int rc = zmq_msg_init (msg_);
zmq_assert (rc == 0);
return 0;
}
int zmq::xrep_t::xflush ()
{
zmq_assert (false);
return -1;
}
int zmq::xrep_t::xrecv (zmq_msg_t *msg_, int flags_)
{
return fq.recv (msg_, flags_);
}
bool zmq::xrep_t::xhas_in ()
{
return fq.has_in ();
}
bool zmq::xrep_t::xhas_out ()
{
// In theory, XREP socket is always ready for writing. Whether actual
// attempt to write succeeds depends on whitch pipe the message is going
// to be routed to.
return true;
}
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