1 files changed, 119 insertions, 0 deletions
diff --git a/src/pair.cpp b/src/pair.cpp
new file mode 100644
index 0000000..66efab9
--- /dev/null
+++ b/src/pair.cpp
@@ -0,0 +1,119 @@
+/*
+    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 "pair.hpp"
+#include "err.hpp"
+#include "pipe.hpp"
+#include "msg.hpp"
+
+zmq::pair_t::pair_t (class ctx_t *parent_, uint32_t tid_, int sid_) :
+    socket_base_t (parent_, tid_, sid_),
+    pipe (NULL)
+{
+    options.type = ZMQ_PAIR;
+}
+
+zmq::pair_t::~pair_t ()
+{
+    zmq_assert (!pipe);
+}
+
+void zmq::pair_t::xattach_pipe (pipe_t *pipe_, bool subscribe_to_all_)
+{
+    // subscribe_to_all_ is unused
+    (void)subscribe_to_all_;
+
+    zmq_assert (pipe_ != NULL);
+
+    //  ZMQ_PAIR socket can only be connected to a single peer.
+    //  The socket rejects any further connection requests.
+    if (pipe == NULL)
+        pipe = pipe_;
+    else
+        pipe_->terminate (false);
+}
+
+void zmq::pair_t::xpipe_terminated (pipe_t *pipe_)
+{
+    if (pipe_ == pipe)
+        pipe = NULL;
+}
+
+void zmq::pair_t::xread_activated (pipe_t *)
+{
+    //  There's just one pipe. No lists of active and inactive pipes.
+    //  There's nothing to do here.
+}
+
+void zmq::pair_t::xwrite_activated (pipe_t *)
+{
+    //  There's just one pipe. No lists of active and inactive pipes.
+    //  There's nothing to do here.
+}
+
+int zmq::pair_t::xsend (msg_t *msg_)
+{
+    if (!pipe || !pipe->write (msg_)) {
+        errno = EAGAIN;
+        return -1;
+    }
+
+    if (!(msg_->flags () & msg_t::more))
+        pipe->flush ();
+
+    //  Detach the original message from the data buffer.
+    int rc = msg_->init ();
+    errno_assert (rc == 0);
+
+    return 0;
+}
+
+int zmq::pair_t::xrecv (msg_t *msg_)
+{
+    //  Deallocate old content of the message.
+    int rc = msg_->close ();
+    errno_assert (rc == 0);
+
+    if (!pipe || !pipe->read (msg_)) {
+
+        //  Initialise the output parameter to be a 0-byte message.
+        rc = msg_->init ();
+        errno_assert (rc == 0);
+
+        errno = EAGAIN;
+        return -1;
+    }
+    return 0;
+}
+
+bool zmq::pair_t::xhas_in ()
+{
+    if (!pipe)
+        return false;
+
+    return pipe->check_read ();
+}
+
+bool zmq::pair_t::xhas_out ()
+{
+    if (!pipe)
+        return false;
+
+    return pipe->check_write ();
+}