New wire format for REQ/REP pattern

This patch introduces two changes:
1. 32-bit ID is used to identify the peer instead of UUID
2. REQ socket seeds the label stack with unique 32-bit request ID
   It also drops any replies with non-matching request ID

Signed-off-by: Martin Sustrik <sustrik@250bpm.com>

1 files changed, 34 insertions, 0 deletions

diff --git a/src/random.hpp b/src/random.hpp
new file mode 100644
index 0000000..0b99bbd
--- /dev/null
+++ b/src/random.hpp
@@ -0,0 +1,34 @@
+/*
+    Copyright (c) 2007-2011 iMatix Corporation
+    Copyright (c) 2007-2011 Other 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/>.
+*/
+
+#ifndef __ZMQ_RANDOM_HPP_INCLUDED__
+#define __ZMQ_RANDOM_HPP_INCLUDED__
+
+#include <stddef.h>
+
+namespace zmq
+{
+
+    //  Generates truly random bytes (not pseudo-random).
+    void generate_random (void *buf_, size_t size_);
+
+}
+
+#endif