/*
 * Run with a port number.  Receives UDP messages on that port and 
 * prints them.
 */
	
/*
 * This file is part of the Cleansocks library.  It is released under the
 * Lesser GNU GPL.  See the accompanying files COPYING and COPYING.LESSER.
 */

#include <stdlib.h>
#include <string.h>

#include <iostream>
#include <string>

#include "cleansocks.h"
#include "cleanip.h"

using namespace std;
using namespace cleansocks;

void doit(const IPport &p)
{
	UDPsocket rcver;
	bind(rcver, IPendpoint(IPaddress::any(), p));

	int tot = 0;
	while(true) {
		cout << "Waiting...";
		cout.flush();

		char buf[1000];
		IPendpoint from;
		int amt = recvfrom(rcver, buf, sizeof buf, from);
		cout << amt << " bytes from " << from << endl;
		cout.write(buf, amt);
		cout << endl;
		tot += amt;

		if(strncmp(buf, "STOP", 4) == 0) break;
	}

	close(rcver);
}

int main(int argc, char **argv)
{
	if(argc != 2) {
		cerr << "Provide exactly one port number." << endl;
		exit(2);
	}

	IPport p = atoi(argv[1]);

	try {
		doit(p);
	} catch(socket_db_error e) {
		cout << "Socket db error: " << e.what() << endl;
	}
	catch(socket_error e) {
		cout << "Socket error: " << e.what() << endl;
	}
	catch(runtime_error e) {
		cout << "Runtime error: " << e.what() << endl;
	}
	
}