ZMQ_BIND - Online Linux Manual PageSection : 3
Updated : 01/21/2023
Source : 0MQ 4​.3​.4
Note : 0MQ Manual
NAMEzmq_bind − accept incoming connections on a socket
SYNOPSISint zmq_bind (void *socket, const char *endpoint);
DESCRIPTIONThe 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​. 0MQ 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) vmci virtual machine communications interface (VMCI), see zmq_vmci(7) udp unreliable unicast and multicast using UDP, see zmq_udp(7) Every 0MQ socket type except ZMQ_PAIR and ZMQ_CHANNEL 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, tcp, vmci and udp transports accept wildcard addresses: see zmq_ipc(7), zmq_tcp(7), zmq_vmci(7) and zmq_udp(7) for details​. .it 1 an-trap
Note ¶.br the address syntax may be different for zmq_bind() and zmq_connect() especially for the tcp, pgm and epgm transports​. .it 1 an-trap
Note ¶.br 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 VALUEThe zmq_bind() function returns zero if successful​. Otherwise it returns −1 and sets errno to one of the values defined below​.
ERRORSEINVAL 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 0MQ 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​.
EXAMPLEBinding 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);
SEE ALSOzmq_connect(3) zmq_socket(3) zmq(7)
AUTHORSThis page was written by the 0MQ community​. To make a change please read the 0MQ Contribution Policy at http://www​.zeromq​.org/docs:contributing​. 0
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