libzmq/src/dealer.cpp

/*
    Copyright (c) 2007-2013 Contributors as noted in the AUTHORS file

    This file is part of 0MQ.

    0MQ is free software; you can redistribute it and/or modify it under
    the terms of the GNU Lesser 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
    GNU Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#include "dealer.hpp"
#include "err.hpp"
#include "msg.hpp"

zmq::dealer_t::dealer_t (class ctx_t *parent_, uint32_t tid_, int sid_) :
    socket_base_t (parent_, tid_, sid_),
    probe_router (false)
{
    options.type = ZMQ_DEALER;
}

zmq::dealer_t::~dealer_t ()
{
}

void zmq::dealer_t::xattach_pipe (pipe_t *pipe_, bool icanhasall_)
{
    // icanhasall_ is unused
    (void) icanhasall_;

    zmq_assert (pipe_);

    if (probe_router) {
        msg_t probe_msg_;
        int rc = probe_msg_.init ();
        errno_assert (rc == 0);

        rc = pipe_->write (&probe_msg_);
        // zmq_assert (rc) is not applicable here, since it is not a bug.
        pipe_->flush ();

        rc = probe_msg_.close ();
        errno_assert (rc == 0);
    }

    fq.attach (pipe_);
    lb.attach (pipe_);
}

int zmq::dealer_t::xsetsockopt (int option_, const void *optval_,
    size_t optvallen_)
{
    bool is_int = (optvallen_ == sizeof (int));
    int value = is_int? *((int *) optval_): 0;

    switch (option_) {
        case ZMQ_PROBE_ROUTER:
            if (is_int && value >= 0) {
                probe_router = (value != 0);
                return 0;
            }
            break;

        default:
            break;
    }

    errno = EINVAL;
    return -1;
}

int zmq::dealer_t::xsend (msg_t *msg_)
{
    return sendpipe (msg_, NULL);
}

int zmq::dealer_t::xrecv (msg_t *msg_)
{
    return recvpipe (msg_, NULL);
}

bool zmq::dealer_t::xhas_in ()
{
    return fq.has_in ();
}

bool zmq::dealer_t::xhas_out ()
{
    return lb.has_out ();
}

void zmq::dealer_t::xread_activated (pipe_t *pipe_)
{
    fq.activated (pipe_);
}

void zmq::dealer_t::xwrite_activated (pipe_t *pipe_)
{
    lb.activated (pipe_);
}

void zmq::dealer_t::xpipe_terminated (pipe_t *pipe_)
{
    fq.pipe_terminated (pipe_);
    lb.pipe_terminated (pipe_);
}

int zmq::dealer_t::sendpipe (msg_t *msg_, pipe_t **pipe_)
{
    return lb.sendpipe (msg_, pipe_);
}

int zmq::dealer_t::recvpipe (msg_t *msg_, pipe_t **pipe_)
{
    return fq.recvpipe (msg_, pipe_);
}