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91 lines
2.8 KiB
Plaintext
91 lines
2.8 KiB
Plaintext
= zmq_vmci(7)
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== NAME
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zmq_vmci - 0MQ transport over virtual machine communicatios interface (VMCI) sockets
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== SYNOPSIS
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The VMCI transport passes messages between VMware virtual machines running on the same host,
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between virtual machine and the host and within virtual machines (inter-process transport like ipc).
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NOTE: Communication between a virtual machine and the host is not supported on Mac OS X 10.9 and above.
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== ADDRESSING
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A 0MQ 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 connect to.
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For the VMCI transport, the transport is `vmci`, and the meaning of
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the 'address' part is defined below.
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Binding a socket
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~~~~~~~~~~~~~~~~
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When binding a 'socket' to a local address using _zmq_bind()_ with the 'vmci'
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transport, the 'endpoint' shall be interpreted as an 'interface' followed by a
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colon and the TCP port number to use.
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An 'interface' may be specified by either of the following:
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* The wild-card `*`, meaning all available interfaces.
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* An integer returned by `VMCISock_GetLocalCID` or `@` (ZeroMQ will call VMCISock_GetLocalCID internally).
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The port may be specified by:
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* A numeric value, usually above 1024 on POSIX systems.
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* The wild-card `*`, meaning a system-assigned ephemeral port.
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Unbinding wild-card address from a socket
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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When wild-card `*` 'endpoint' was used in _zmq_bind()_, the caller should use
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real 'endpoint' obtained from the ZMQ_LAST_ENDPOINT socket option to unbind
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this 'endpoint' from a socket using _zmq_unbind()_.
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Connecting a socket
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~~~~~~~~~~~~~~~~~~~
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When connecting a socket to a peer address using _zmq_connect()_ with the 'vmci'
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transport, the 'endpoint' shall be interpreted as a 'peer address' followed by
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a colon and the port number to use.
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A 'peer address' must be a CID of the peer.
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== EXAMPLES
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.Assigning a local address to a socket
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----
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// VMCI port 5555 on all available interfaces
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rc = zmq_bind(socket, "vmci://*:5555");
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assert (rc == 0);
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// VMCI port 5555 on the local loop-back interface on all platforms
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cid = VMCISock_GetLocalCID();
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sprintf(endpoint, "vmci://%d:5555", cid);
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rc = zmq_bind(socket, endpoint);
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assert (rc == 0);
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----
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.Connecting a socket
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----
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// Connecting using a CID
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sprintf(endpoint, "vmci://%d:5555", cid);
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rc = zmq_connect(socket, endpoint);
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assert (rc == 0);
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----
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== SEE ALSO
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* xref:zmq_bind.adoc[zmq_bind]
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* xref:zmq_connect.adoc[zmq_connect]
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* xref:zmq_inproc.adoc[zmq_inproc]
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* xref:zmq_tcp.adoc[zmq_tcp]
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* xref:zmq_pgm.adoc[zmq_pgm]
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* xref:zmq_vmci.adoc[zmq_vmci]
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* xref:zmq_getsockopt.adoc[zmq_getsockopt]
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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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