zmq_inproc(7) [debian man page]

ZMQ_INPROC(7)							    0MQ Manual							     ZMQ_INPROC(7)

NAME

       zmq_inproc - 0MQ local in-process (inter-thread) communication transport

SYNOPSIS

       The in-process transport passes messages via memory directly between threads sharing a single 0MQ context.

	   Note
	   No I/O threads are involved in passing messages using the inproc transport. Therefore, if you are using a 0MQ context for in-process
	   messaging only you can initialise the context with zero I/O threads. See zmq_init(3) for details.

ADDRESSING

       A 0MQ address string consists of two parts as follows: transport://endpoint. The transport part specifies the underlying transport protocol
       to use, and for the in-process transport shall be set to inproc. The meaning of the endpoint part for the in-process transport is defined
       below.

   Assigning a local address to a socket
       When assigning a local address to a socket using zmq_bind() with the inproc transport, the endpoint shall be interpreted as an arbitrary
       string identifying the name to create. The name must be unique within the 0MQ context associated with the socket and may be up to 256
       characters in length. No other restrictions are placed on the format of the name.

   Connecting a socket
       When connecting a socket to a peer address using zmq_connect() with the inproc transport, the endpoint shall be interpreted as an arbitrary
       string identifying the name to connect to. The name must have been previously created by assigning it to at least one socket within the
       same 0MQ context as the socket being connected.

WIRE FORMAT

       Not applicable.

EXAMPLES

       Assigning a local address to a socket.

	   /* Assign the in-process name "#1" */
	   rc = zmq_bind(socket, "inproc://#1");
	   assert (rc == 0);
	   /* Assign the in-process name "my-endpoint" */
	   rc = zmq_bind(socket, "inproc://my-endpoint");
	   assert (rc == 0);

       Connecting a socket.

	   /* Connect to the in-process name "#1" */
	   rc = zmq_connect(socket, "inproc://#1");
	   assert (rc == 0);
	   /* Connect to the in-process name "my-endpoint" */
	   rc = zmq_connect(socket, "inproc://my-endpoint");
	   assert (rc == 0);

SEE ALSO

       zmq_bind(3) zmq_connect(3) zmq_ipc(7) zmq_tcp(7) zmq_pgm(7) zmq(7)

AUTHORS

       This manual page was written by the 0MQ community.

0MQ 2.2.0							    04/04/2012							     ZMQ_INPROC(7)

ZMQ_CONNECT(3)							    0MQ Manual							    ZMQ_CONNECT(3)

NAME

       zmq_connect - connect a socket

SYNOPSIS

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

DESCRIPTION

       The zmq_connect() function shall connect the socket referenced by the socket argument to the endpoint specified by the endpoint argument.

       The endpoint argument is a string consisting of two parts as follows: transport://address. The transport part specifies the underlying
       transport protocol to use. The meaning of the address part is specific to the underlying transport protocol selected.

       The following transports are defined:

       inproc
	   local in-process (inter-thread) communication transport, see zmq_inproc(7)

       ipc
	   local inter-process communication transport, see zmq_ipc(7)

       tcp
	   unicast transport using TCP, see zmq_tcp(7)

       pgm, epgm
	   reliable multicast transport using PGM, see zmq_pgm(7)

       With the exception of ZMQ_PAIR sockets, a single socket may be connected to multiple endpoints using zmq_connect(), while simultaneously
       accepting incoming connections from multiple endpoints bound to the socket using zmq_bind(). Refer to zmq_socket(3) for a description of
       the exact semantics involved when connecting or binding a socket to multiple endpoints.

	   Note
	   The connection will not be performed immediately but as needed by 0MQ. Thus a successful invocation of zmq_connect() does not indicate
	   that a physical connection was or can actually be established.

RETURN VALUE

       The zmq_connect() function shall return zero if successful. Otherwise it shall return -1 and set 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.

       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.

EXAMPLE

       Connecting a subscriber socket to an in-process and a TCP transport.

	   /* Create a ZMQ_SUB socket */
	   void *socket = zmq_socket (context, ZMQ_SUB);
	   assert (socket);
	   /* Connect it to an in-process transport with the address 'my_publisher' */
	   int rc = zmq_connect (socket, "inproc://my_publisher");
	   assert (rc == 0);
	   /* Connect it to the host server001, port 5555 using a TCP transport */
	   rc = zmq_connect (socket, "tcp://server001:5555");
	   assert (rc == 0);

SEE ALSO

       zmq_bind(3) zmq_socket(3) zmq(7)

AUTHORS

       This manual page was written by the 0MQ community.

0MQ 2.2.0							    04/04/2012							    ZMQ_CONNECT(3)