NAME

xs_msg_init - initialise empty Crossroads message

SYNOPSIS

int xs_msg_init (xs_msg_t *msg);

DESCRIPTION

The xs_msg_init() function shall initialise the message object referenced by msg to represent an empty message. This function is most useful when called before receiving a message with xs_recv().

Caution

Never access xs_msg_t members directly, instead always use the xs_msg family of functions.

Caution

The functions xs_msg_init(), xs_msg_init_data() and xs_msg_init_size() are mutually exclusive. Never initialize the same xs_msg_t twice.

RETURN VALUE

The xs_msg_init() function shall return zero if successful. Otherwise it shall return -1 and set errno to one of the values defined below.

ERRORS

No errors are defined.

EXAMPLE

Receiving a message from a socket.

xs_msg_t msg;
rc = xs_msg_init (&msg);
assert (rc == 0);
rc = xs_recv (socket, &msg, 0);
assert (rc == 0);

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