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diff --git a/src/xpub.hpp b/src/xpub.hpp
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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 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_XPUB_HPP_INCLUDED__
+#define __ZMQ_XPUB_HPP_INCLUDED__
+
+#include "socket_base.hpp"
+#include "array.hpp"
+#include "pipe.hpp"
+
+namespace zmq
+{
+
+    class xpub_t : public socket_base_t, public i_writer_events
+    {
+    public:
+
+        xpub_t (class ctx_t *parent_, uint32_t tid_);
+        ~xpub_t ();
+
+        //  Implementations of virtual functions from socket_base_t.
+        void xattach_pipes (class reader_t *inpipe_, class writer_t *outpipe_,
+            const blob_t &peer_identity_);
+        int xsend (zmq_msg_t *msg_, int flags_);
+        bool xhas_out ();
+
+        //  i_writer_events interface implementation.
+        void activated (writer_t *pipe_);
+        void terminated (writer_t *pipe_);
+
+    private:
+
+        //  Hook into the termination process.
+        void process_term (int linger_);
+
+        //  Write the message to the pipe. Make the pipe inactive if writing
+        //  fails. In such a case false is returned.
+        bool write (class writer_t *pipe_, zmq_msg_t *msg_);
+
+        //  Outbound pipes, i.e. those the socket is sending messages to.
+        typedef array_t <class writer_t> pipes_t;
+        pipes_t pipes;
+
+        //  Number of active pipes. All the active pipes are located at the
+        //  beginning of the pipes array.
+        pipes_t::size_type active;
+
+        //  True if termination process is already underway.
+        bool terminating;
+
+        xpub_t (const xpub_t&);
+        void operator = (const xpub_t&);
+    };
+
+}
+
+#endif