zmq_vmci - 0MQ transport over virtual machine communicatios interface (VMCI) sockets
The VMCI transport passes messages between VMware virtual machines running on the same host, between virtual machine and the host and within virtual machines (inter-process transport like ipc).
|Communication between a virtual machine and the host is not supported on Mac OS X 10.9 and above.|
A 0MQ 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 VMCI transport, the transport is
vmci, 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 'vmci' transport, the 'endpoint' shall be interpreted as an 'interface' followed by a colon and the TCP port number to use.
An 'interface' may be specified by either of the following:
*, meaning all available interfaces.
An integer returned by
@(ZeroMQ will call VMCISock_GetLocalCID internally).
The port may be specified by:
A numeric value, usually above 1024 on POSIX systems.
*, meaning a system-assigned ephemeral port.
Unbinding wild-card address from a socket
* 'endpoint' was used in zmq_bind(), the caller should use
real 'endpoint' obtained from the ZMQ_LAST_ENDPOINT socket option to unbind
this 'endpoint' from a socket using zmq_unbind().
Connecting a socket
When connecting a socket to a peer address using zmq_connect() with the 'vmci' transport, the 'endpoint' shall be interpreted as a 'peer address' followed by a colon and the port number to use.
A 'peer address' must be a CID of the peer.
// VMCI port 5555 on all available interfaces rc = zmq_bind(socket, "vmci://*:5555"); assert (rc == 0); // VMCI port 5555 on the local loop-back interface on all platforms cid = VMCISock_GetLocalCID(); sprintf(endpoint, "vmci://%d:5555", cid); rc = zmq_bind(socket, endpoint); assert (rc == 0);
// Connecting using a CID sprintf(endpoint, "vmci://%d:5555", cid); rc = zmq_connect(socket, endpoint); assert (rc == 0);
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