zmq_bind(3)

SYNOPSIS

int zmq_bind (void *socket, const char *endpoint);

DESCRIPTION

The zmq_bind() function binds the socket to a local endpoint and then +accepts incoming connections on that endpoint.

The endpoint is a string consisting of a transport:// followed by an +address. The transport specifies the underlying protocol to use. The +address specifies the transport-specific address to bind to.

ØMQ provides the the following transports:

+tcp +: +
+unicast transport using TCP, see zmq_tcp(7) +
+
+ipc +: +
+local inter-process communication transport, see zmq_ipc(7) +
+
+inproc +: +
+local in-process (inter-thread) communication transport, see zmq_inproc(7) +
+
+pgm, epgm +: +
+reliable multicast transport using PGM, see zmq_pgm(7) +
+

Every ØMQ socket type except ZMQ_PAIR supports one-to-many and many-to-one +semantics. The precise semantics depend on the socket type and are defined in +zmq_socket(3).

The ipc and tcp transports accept wildcard addresses: see zmq_ipc(7) +and zmq_tcp(7) for details.

+ + + +

Note

the address syntax may be different for zmq_bind() and zmq_connect() +especially for the tcp, pgm and epgm transports.

+ + + +

Note

following a zmq_bind(), the socket enters a mute state unless or +until at least one incoming or outgoing connection is made, at which point +the socket enters a ready state. In the mute state, the socket blocks or +drops messages according to the socket type, as defined in zmq_socket(3). +By contrast, following a libzmq:zmq_connect[3], the socket enters the ready state.

RETURN VALUE

The zmq_bind() function returns zero if successful. Otherwise it returns +-1 and sets errno to one of the values defined below.

ERRORS

+EINVAL +: +
+The endpoint supplied is invalid. +
+
+EPROTONOSUPPORT +: +
+The requested transport protocol is not supported. +
+
+ENOCOMPATPROTO +: +
+The requested transport protocol is not compatible with the socket type. +
+
+EADDRINUSE +: +
+The requested address is already in use. +
+
+EADDRNOTAVAIL +: +
+The requested address was not local. +
+
+ENODEV +: +
+The requested address specifies a nonexistent interface. +
+
+ETERM +: +
+The ØMQ context associated with the specified socket was terminated. +
+
+ENOTSOCK +: +
+The provided socket was invalid. +
+
+EMTHREAD +: +
+No I/O thread is available to accomplish the task. +
+

EXAMPLE

Binding a publisher socket to an in-process and a TCP transport

/* Create a ZMQ_PUB socket */
+void *socket = zmq_socket (context, ZMQ_PUB);
+assert (socket);
+/* Bind it to a in-process transport with the address 'my_publisher' */
+int rc = zmq_bind (socket, "inproc://my_publisher");
+assert (rc == 0);
+/* Bind it to a TCP transport on port 5555 of the 'eth0' interface */
+rc = zmq_bind (socket, "tcp://eth0:5555");
+assert (rc == 0);

AUTHORS

This page was written by the ØMQ community. To make a change please +read the ØMQ Contribution Policy at http://www.zeromq.org/docs:contributing.

+zmq_bind(3) Manual Page +

NAME