Squashed 'libs/libzmq/' content from commit 2b2fb9c7

git-subtree-dir: libs/libzmq
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doc/zmq_msg_set_routing_id.txt

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+zmq_msg_set_routing_id(3)
+=========================
+
+
+NAME
+----
+
+zmq_msg_set_routing_id - set routing ID property on message
+
+
+SYNOPSIS
+--------
+*int zmq_msg_set_routing_id (zmq_msg_t '*message', uint32_t 'routing_id');*
+
+
+DESCRIPTION
+-----------
+The _zmq_msg_set_routing_id()_ function sets the 'routing_id' specified, on the
+the message pointed to by the 'message' argument. The 'routing_id' must be
+greater than zero. To get a valid routing ID, you must receive a message
+from a 'ZMQ_SERVER' socket, and use the libzmq:zmq_msg_routing_id method.
+Routing IDs are transient.
+
+
+RETURN VALUE
+------------
+The _zmq_msg_set_routing_id()_ function shall return zero if successful. Otherwise it
+shall return `-1` and set 'errno' to one of the values defined below.
+
+
+ERRORS
+------
+*EINVAL*::
+The provided 'routing_id' is zero.
+
+
+SEE ALSO
+--------
+linkzmq:zmq_msg_routing_id[3]
+linkzmq:zmq[7]
+
+
+AUTHORS
+-------
+This page was written by the 0MQ community. To make a change please
+read the 0MQ Contribution Policy at <http://www.zeromq.org/docs:contributing>.