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diff --git a/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/command.hpp b/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/command.hpp
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+++ b/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/command.hpp
@@ -0,0 +1,163 @@
+/*
+    Copyright (c) 2007-2015 Contributors as noted in the AUTHORS file
+
+    This file is part of libzmq, the ZeroMQ core engine in C++.
+
+    libzmq is free software; you can redistribute it and/or modify it under
+    the terms of the GNU Lesser General Public License (LGPL) as published
+    by the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    As a special exception, the Contributors give you permission to link
+    this library with independent modules to produce an executable,
+    regardless of the license terms of these independent modules, and to
+    copy and distribute the resulting executable under terms of your choice,
+    provided that you also meet, for each linked independent module, the
+    terms and conditions of the license of that module. An independent
+    module is a module which is not derived from or based on this library.
+    If you modify this library, you must extend this exception to your
+    version of the library.
+
+    libzmq 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_COMMAND_HPP_INCLUDED__
+#define __ZMQ_COMMAND_HPP_INCLUDED__
+
+#include "stdint.hpp"
+
+namespace zmq
+{
+
+    class object_t;
+    class own_t;
+    struct i_engine;
+    class pipe_t;
+    class socket_base_t;
+
+    //  This structure defines the commands that can be sent between threads.
+
+    struct command_t
+    {
+        //  Object to process the command.
+        zmq::object_t *destination;
+
+        enum type_t
+        {
+            stop,
+            plug,
+            own,
+            attach,
+            bind,
+            activate_read,
+            activate_write,
+            hiccup,
+            pipe_term,
+            pipe_term_ack,
+            term_req,
+            term,
+            term_ack,
+            reap,
+            reaped,
+            inproc_connected,
+            done
+        } type;
+
+        union {
+
+            //  Sent to I/O thread to let it know that it should
+            //  terminate itself.
+            struct {
+            } stop;
+
+            //  Sent to I/O object to make it register with its I/O thread.
+            struct {
+            } plug;
+
+            //  Sent to socket to let it know about the newly created object.
+            struct {
+                zmq::own_t *object;
+            } own;
+
+            //  Attach the engine to the session. If engine is NULL, it informs
+            //  session that the connection have failed.
+            struct {
+                struct i_engine *engine;
+            } attach;
+
+            //  Sent from session to socket to establish pipe(s) between them.
+            //  Caller have used inc_seqnum beforehand sending the command.
+            struct {
+                zmq::pipe_t *pipe;
+            } bind;
+
+            //  Sent by pipe writer to inform dormant pipe reader that there
+            //  are messages in the pipe.
+            struct {
+            } activate_read;
+
+            //  Sent by pipe reader to inform pipe writer about how many
+            //  messages it has read so far.
+            struct {
+                uint64_t msgs_read;
+            } activate_write;
+
+            //  Sent by pipe reader to writer after creating a new inpipe.
+            //  The parameter is actually of type pipe_t::upipe_t, however,
+            //  its definition is private so we'll have to do with void*.
+            struct {
+                void *pipe;
+            } hiccup;
+
+            //  Sent by pipe reader to pipe writer to ask it to terminate
+            //  its end of the pipe.
+            struct {
+            } pipe_term;
+
+            //  Pipe writer acknowledges pipe_term command.
+            struct {
+            } pipe_term_ack;
+
+            //  Sent by I/O object ot the socket to request the shutdown of
+            //  the I/O object.
+            struct {
+                zmq::own_t *object;
+            } term_req;
+
+            //  Sent by socket to I/O object to start its shutdown.
+            struct {
+                int linger;
+            } term;
+
+            //  Sent by I/O object to the socket to acknowledge it has
+            //  shut down.
+            struct {
+            } term_ack;
+
+            //  Transfers the ownership of the closed socket
+            //  to the reaper thread.
+            struct {
+                zmq::socket_base_t *socket;
+            } reap;
+
+            //  Closed socket notifies the reaper that it's already deallocated.
+            struct {
+            } reaped;
+
+            //  Sent by reaper thread to the term thread when all the sockets
+            //  are successfully deallocated.
+            struct {
+            } done;
+
+        } args;
+    };
+
+}
+
+#endif