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diff --git a/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/tcp.hpp b/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/tcp.hpp
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+++ b/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/tcp.hpp
@@ -0,0 +1,62 @@
+/*
+    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_TCP_HPP_INCLUDED__
+#define __ZMQ_TCP_HPP_INCLUDED__
+
+#include "fd.hpp"
+
+namespace zmq
+{
+
+    //  Tunes the supplied TCP socket for the best latency.
+    void tune_tcp_socket (fd_t s_);
+
+    //  Sets the socket send buffer size.
+    void set_tcp_send_buffer (fd_t sockfd_, int bufsize_);
+
+    //  Sets the socket receive buffer size.
+    void set_tcp_receive_buffer (fd_t sockfd_, int bufsize_);
+
+    //  Tunes TCP keep-alives
+    void tune_tcp_keepalives (fd_t s_, int keepalive_, int keepalive_cnt_, int keepalive_idle_, int keepalive_intvl_);
+
+    //  Writes data to the socket. Returns the number of bytes actually
+    //  written (even zero is to be considered to be a success). In case
+    //  of error or orderly shutdown by the other peer -1 is returned.
+    int tcp_write (fd_t s_, const void *data_, size_t size_);
+
+    //  Reads data from the socket (up to 'size' bytes).
+    //  Returns the number of bytes actually read or -1 on error.
+    //  Zero indicates the peer has closed the connection.
+    int tcp_read (fd_t s_, void *data_, size_t size_);
+
+}
+
+#endif