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97 lines
3.4 KiB
Plaintext
97 lines
3.4 KiB
Plaintext
= zmq_bind(3)
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== NAME
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zmq_bind - accept incoming connections on a socket
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== SYNOPSIS
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*int zmq_bind (void '*socket', const char '*endpoint');*
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== DESCRIPTION
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The _zmq_bind()_ function binds the 'socket' to a local 'endpoint' and then
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accepts incoming connections on that endpoint.
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The 'endpoint' is a string consisting of a 'transport'`://` followed by an
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'address'. The 'transport' specifies the underlying protocol to use. The
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'address' specifies the transport-specific address to bind to.
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0MQ provides the the following transports:
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'tcp':: unicast transport using TCP, see xref:zmq_tcp.adoc[zmq_tcp]
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'ipc':: local inter-process communication transport, see xref:zmq_ipc.adoc[zmq_ipc]
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'inproc':: local in-process (inter-thread) communication transport, see xref:zmq_inproc.adoc[zmq_inproc]
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'pgm', 'epgm':: reliable multicast transport using PGM, see xref:zmq_pgm.adoc[zmq_pgm]
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'vmci':: virtual machine communications interface (VMCI), see xref:zmq_vmci.adoc[zmq_vmci]
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'udp':: unreliable unicast and multicast using UDP, see xref:zmq_udp.adoc[zmq_udp]
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Every 0MQ socket type except 'ZMQ_PAIR' and 'ZMQ_CHANNEL' supports one-to-many and many-to-one
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semantics. The precise semantics depend on the socket type and are defined in
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xref:zmq_socket.adoc[zmq_socket]
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The 'ipc', 'tcp', 'vmci' and 'udp' transports accept wildcard addresses: see
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xref:zmq_ipc.adoc[zmq_ipc], xref:zmq_tcp.adoc[zmq_tcp], xref:zmq_vmci.adoc[zmq_vmci] and
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xref:zmq_udp.adoc[zmq_udp] for details.
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NOTE: the address syntax may be different for _zmq_bind()_ and _zmq_connect()_
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especially for the 'tcp', 'pgm' and 'epgm' transports.
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NOTE: following a _zmq_bind()_, the socket enters a 'mute' state unless or
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until at least one incoming or outgoing connection is made, at which point
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the socket enters a 'ready' state. In the mute state, the socket blocks or
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drops messages according to the socket type, as defined in xref:zmq_socket.adoc[zmq_socket]
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By contrast, following a libzmq:zmq_connect, the socket enters the 'ready' state.
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== RETURN VALUE
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The _zmq_bind()_ function returns zero if successful. Otherwise it returns
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`-1` and sets 'errno' to one of the values defined below.
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== ERRORS
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*EINVAL*::
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The endpoint supplied is invalid.
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*EPROTONOSUPPORT*::
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The requested 'transport' protocol is not supported.
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*ENOCOMPATPROTO*::
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The requested 'transport' protocol is not compatible with the socket type.
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*EADDRINUSE*::
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The requested 'address' is already in use.
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*EADDRNOTAVAIL*::
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The requested 'address' was not local.
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*ENODEV*::
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The requested 'address' specifies a nonexistent interface.
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*ETERM*::
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The 0MQ 'context' associated with the specified 'socket' was terminated.
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*ENOTSOCK*::
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The provided 'socket' was invalid.
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*EMTHREAD*::
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No I/O thread is available to accomplish the task.
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== EXAMPLE
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.Binding a publisher socket to an in-process and a TCP transport
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----
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/* Create a ZMQ_PUB socket */
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void *socket = zmq_socket (context, ZMQ_PUB);
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assert (socket);
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/* Bind it to a in-process transport with the address 'my_publisher' */
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int rc = zmq_bind (socket, "inproc://my_publisher");
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assert (rc == 0);
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/* Bind it to a TCP transport on port 5555 of the 'eth0' interface */
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rc = zmq_bind (socket, "tcp://eth0:5555");
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assert (rc == 0);
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----
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== SEE ALSO
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* xref:zmq_connect.adoc[zmq_connect]
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* xref:zmq_socket.adoc[zmq_socket]
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* xref:zmq.adoc[zmq]
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== AUTHORS
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This page was written by the 0MQ community. To make a change please
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read the 0MQ Contribution Policy at <https://zeromq.org/how-to-contribute/>.
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