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// file : examples/os/net/ipv4/datagram/server.cxx
// author : Boris Kolpackov <boris@kolpackov.net>
// copyright : Copyright (c) 2005-2010 Boris Kolpackov
// license : GNU GPL v2 + exceptions; see accompanying LICENSE file
#include <cult/types.hxx>
#include <cult/containers/vector.hxx>
#include <cult/os/net/ipv4/address.hxx>
#include <cult/os/net/ipv4/multicast-socket.hxx>
#include <iostream>
#include <cstring> // memcmp
#include "protocol.hxx"
using std::cerr;
using std::endl;
using namespace Cult;
using namespace OS::Net::IPv4;
typedef Containers::Vector<Boolean> StatusList;
class Args {};
Int
main (Int argc, Char* argv[])
{
try
{
if (argc < 2)
throw Args ();
Address addr (argv[1], 10000);
MulticastSocket socket;
socket.join (addr);
Message expected_msg;
expected_msg.sn = 0;
for (UnsignedShort i = 0; i < payload_size; ++i)
{
expected_msg.payload[i] = i;
}
StatusList received (message_count, 0);
StatusList damaged (message_count, 0);
StatusList duplicate (message_count, 0);
Message msg;
while (true)
{
socket.recv (&msg, sizeof (msg));
if (received[msg.sn])
{
duplicate[msg.sn] = true;
}
else
{
received[msg.sn] = true;
if (std::memcmp (expected_msg.payload, msg.payload, payload_size) != 0)
{
damaged[msg.sn] = true;
}
}
if (msg.sn + 1 == message_count) break;
}
UnsignedLong lost_count (0), damaged_count (0), duplicate_count (0);
for (StatusList::Iterator i (received.begin ()), end (received.end ());
i != end;
++i)
if (!*i) ++lost_count;
for (StatusList::Iterator i (damaged.begin ()), end (damaged.end ());
i != end;
++i)
if (*i) ++damaged_count;
for (StatusList::Iterator i (duplicate.begin ()), end (duplicate.end ());
i != end;
++i)
if (*i) ++duplicate_count;
cerr << "lost : " << lost_count << endl
<< "damaged : " << damaged_count << endl
<< "duplicate : " << duplicate_count << endl << endl;
if (lost_count != 0)
{
cerr << "lost message dump:" << endl;
UnsignedLong total = 0;
for (StatusList::Iterator
begin (received.begin ()), i (begin), end (received.end ());
i != end;)
{
if (!*i)
{
UnsignedLong count = 1;
for (StatusList::Iterator j = i + 1; j < end && !*j; j++, count++) ;
cerr << '\t' << i - begin << " : " << count << endl;
i += count;
total += count;
}
else
++i;
}
if (total != lost_count)
cerr << "trouble" << endl;
}
}
catch (OS::Exception const& e)
{
cerr << "errno: " << e.code () << endl;
}
catch (Args const&)
{
cerr << "usage: client <IPv4 address>" << endl;
}
}
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