blob: 6d31bb22a13e8eaf0acc262895fb8aaa8dea4140 [file] [log] [blame]
// :vim ts=4 sw=4 noet:
/*
==================================================================================
Copyright (c) 2019 Nokia
Copyright (c) 2018-2019 AT&T Intellectual Property.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
==================================================================================
*/
/*
Mnemonic: rmr_rcvr.c
Abstract: This is a very simple receiver that does nothing but listen
for messages and write stats every so often to the tty.
Define these environment variables to have some control:
RMR_SEED_RT -- path to the static routing table
RMR_RTG_SVC -- host:port of the route table generator
Parms: Two positional parameters are recognised on the command line:
[port [stats-freq]]
where port is the port number to listen on and the stats frequency
is the number of messages received which causes stats to be
generated. If not supplied the listen port default is 4560
and the stats frequency is every 10 messages.
Date: 1 April 2019
Author: E. Scott Daniels
*/
#include <unistd.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <rmr/rmr.h>
int main( int argc, char** argv ) {
void* mrc; // msg router context
long long total = 0;
rmr_mbuf_t* msg = NULL; // message received
int stat_freq = 10; // write stats after reciving this many messages
int i;
char* listen_port;
long long count = 0;
long long bad = 0;
long long empty = 0;
if( argc > 1 ) {
listen_port = argv[1];
}
if( argc > 2 ) {
stat_freq = atoi( argv[2] );
}
fprintf( stderr, "<DEMO> listening on port: %s\n", listen_port );
fprintf( stderr, "<DEMO> stats will be reported every %d messages\n", stat_freq );
mrc = rmr_init( listen_port, RMR_MAX_RCV_BYTES, RMRFL_NONE ); // start your engines!
if( mrc == NULL ) {
fprintf( stderr, "<DEMO> ABORT: unable to initialise RMr\n" );
exit( 1 );
}
while( ! rmr_ready( mrc ) ) { // wait for RMr to load a route table
fprintf( stderr, "<DEMO> waiting for ready\n" );
sleep( 3 );
}
fprintf( stderr, "<DEMO> rmr now shows ready\n" );
while( 1 ) { // forever; ctl-c, kill -15, etc to end
msg = rmr_rcv_msg( mrc, msg ); // block until one arrives
if( msg ) {
if( msg->state == RMR_OK ) {
count++; // messages received for stats output
} else {
bad++;
}
} else {
empty++;
}
if( (count % stat_freq) == 0 ) {
fprintf( stderr, "<DEMO> total msg received: %lld errors: %lld empty: %lld\n", count, bad, empty );
}
}
}