Man Page: rmr_get_src
RMR LIBRARY FUNCTIONS
NAME
rmr_get_src
SYNOPSIS
#include <rmr/rmr.h>
unsigned char* rmr_get_src( rmr_mbuf_t* mbuf, unsigned char* dest )
DESCRIPTION
The rmr_get_src
function will copy the source
information from the message to a buffer (dest) supplied by
the user. In an RMR message, the source is the sender’s
information that is used for return to sender function calls,
and is generally the hostname and port in the form name.
The source might be an IP address port combination; the data
is populated by the sending process and the only requirement
is that it be capable of being used to start a TCP session
with the sender.
The maximum size allowed by RMR is 64 bytes (including the nil string terminator), so the user must ensure that the destination buffer given is at least 64 bytes.
RETURN VALUE
On success, a pointer to the destination buffer is given as a convenience to the user programme. On failure, a nil pointer is returned and the value of errno is set.
ERRORS
If an error occurs, the value of the global variable
errno
will be set to one of the following with the
indicated meaning.
EINVAL
The message, or an internal portion of the message, was corrupted or the pointer was invalid.
SEE ALSO
rmr_alloc_msg(3), rmr_bytes2xact(3), rmr_bytes2meid(3), rmr_call(3), rmr_free_msg(3), rmr_get_rcvfd(3), rmr_get_srcip(3), rmr_payload_size(3), rmr_send_msg(3), rmr_rcv_msg(3), rmr_rcv_specific(3), rmr_rts_msg(3), rmr_ready(3), rmr_fib(3), rmr_has_str(3), rmr_tokenise(3), rmr_mk_ring(3), rmr_ring_free(3), rmr_str2meid(3), rmr_str2xact(3), rmr_wh_open(3), rmr_wh_send_msg(3)