Name
zmq_ipc - ØMQ 本地进程间通信传输
Synopsis
进程间传输使用系统依赖的IPC机制在本地进程之间传递消息。
进程间传输目前只在提供UNIX域套接字的操作系统上实现。
Addressing
A ØMQ 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 connect to.
For the inter-process transport, the transport is ipc, and the meaning of the address part is defined below.
Binding a socket
When binding a socket to a local address using zmq_bind() with the ipc transport, the endpoint shall be interpreted as an arbitrary string identifying the pathname to create. The pathname must be unique within the operating system namespace used by the ipc implementation, and must fulfill any restrictions placed by the operating system on the format and length of a pathname.
When the address is *, zmq_bind() shall generate a unique temporary pathname. The caller should retrieve this pathname using the ZMQ_LAST_ENDPOINT socket option. See zmq_getsockopt(3) for details.
any existing binding to the same endpoint shall be overridden. In this behavior, the ipc transport is not consistent with the tcp or inproc transports.
Connecting a socket
When connecting a socket to a peer address using zmq_connect() with the ipc transport, the endpoint shall be interpreted as an arbitrary string identifying the pathname to connect to. The pathname must have been previously created within the operating system namespace by assigning it to a socket with zmq_bind().
Examples
Assigning a local address to a socket
// Assign the pathname "/tmp/feeds/0"
rc = zmq_bind(socket, "ipc:///tmp/feeds/0"); assert (rc == 0);
Connecting a socket
// Connect to the pathname "/tmp/feeds/0"
rc = zmq_connect(socket, "ipc:///tmp/feeds/0"); assert (rc == 0);
See also
zmq_bind(3) zmq_connect(3) zmq_inproc(7) zmq_tcp(7) zmq_pgm(7) zmq_getsockopt(3)zmq(7)
Authors
This ØMQ manual page was written by Pieter Hintjens <[email protected]>, Martin Sustrik <[email protected]> and Martin Lucina <[email protected]>.