XS_CONNECT(3) Crossroads I/O Manual XS_CONNECT(3)NAMExs_connect - connect a socket
SYNOPSIS
int xs_connect (void *socket, const char *endpoint);
DESCRIPTION
The xs_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
xs_inproc(7)
ipc
local inter-process communication transport, see xs_ipc(7)
tcp
unicast transport using TCP, see xs_tcp(7)
pgm, epgm
reliable multicast transport using PGM, see xs_pgm(7)
With the exception of XS_PAIR sockets, a single socket may be connected
to multiple endpoints using xs_connect(), while simultaneously
accepting incoming connections from multiple endpoints bound to the
socket using xs_bind(). Refer to xs_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
the library. Thus a successful invocation of xs_connect() does not
indicate that a physical connection was or can actually be
established.
RETURN VALUE
The xs_connect() function shall return endpoint ID if successful.
Otherwise it shall return -1 and set errno to one of the values defined
below.
ERRORS
EINVAL
The endpoint supplied is invalid.
ENAMETOOLONG
The supplied name was too long.
EPROTONOSUPPORT
The requested transport protocol is not supported.
ENOCOMPATPROTO
The requested transport protocol is not compatible with the socket
type.
ETERM
The context associated with the specified socket was terminated.
ENOTSOCK
The provided socket was invalid.
EXAMPLE
Connecting a subscriber socket to an in-process and a TCP transport.
/* Create a XS_SUB socket */
void *socket = xs_socket (context, XS_SUB);
assert (socket);
/* Connect it to an in-process transport with the address 'my_publisher' */
int rc = xs_connect (socket, "inproc://my_publisher");
assert (rc != -1);
/* Connect it to the host server001, port 5555 using a TCP transport */
rc = xs_connect (socket, "tcp://server001:5555");
assert (rc != -1);
SEE ALSOxs_bind(3)xs_socket(3)xs(7)AUTHORS
The Crossroads documentation was written by Martin Sustrik
<sustrik@250bpm.com[1]> and Martin Lucina <martin@lucina.net[2]>.
NOTES
1. sustrik@250bpm.com
mailto:sustrik@250bpm.com
2. martin@lucina.net
mailto:martin@lucina.net
Crossroads I/O 1.2.0 02/17/2016 XS_CONNECT(3)
