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// file : Receiver.cpp
// author : Boris Kolpackov <boris@kolpackov.net>
// cvs-id : $Id$
#include "ace/Vector_T.h"
#include "ace/Log_Msg.h"
#include "ace/OS_NS_string.h"
#include "ace/RMCast/Socket.h"
#include "Protocol.h"
typedef
ACE_Vector<unsigned char, ACE_VECTOR_DEFAULT_SIZE>
Status_List;
class args {};
int
ACE_TMAIN (int argc, ACE_TCHAR* argv[])
{
try
{
if (argc < 2) throw args ();
ACE_INET_Addr addr (argv[1]);
// Turn on message loss and reordering simulation.
//
ACE_RMCast::Socket socket (addr, false, true);
Message expected_msg;
expected_msg.sn = 0;
// VC6 does not know about the new rules.
//
{
for (unsigned short i = 0; i < payload_size; i++)
{
expected_msg.payload[i] = i;
}
}
Status_List received (message_count);
Status_List damaged (message_count);
Status_List duplicate (message_count);
// VC6 does not know about new rules.
//
{
for (unsigned long i = 0; i < message_count; ++i)
{
received.push_back (0);
damaged.push_back (0);
duplicate.push_back (0);
}
}
Message msg;
while (true)
{
ssize_t s = socket.size ();
if (s == -1 && errno == ENOENT)
{
ACE_ERROR ((LM_ERROR, "unavailable message detected\n"));
// Receive it.
//
socket.recv (&msg, sizeof (msg));
continue;
}
if (s != sizeof (msg))
{
ACE_ERROR ((LM_ERROR, "unexpected message size %d, expected %d\n",
s, sizeof (msg)));
continue;
}
if (socket.recv (&msg, sizeof (msg)) != s)
{
ACE_ERROR ((LM_ERROR,
"recv() reported different size than size()\n"));
continue;
}
if (received[msg.sn] == 1)
{
duplicate[msg.sn] = 1;
}
else
{
received[msg.sn] = 1;
if (ACE_OS::memcmp (expected_msg.payload,
msg.payload,
payload_size) != 0)
{
damaged[msg.sn] = 1;
}
}
if (msg.sn + 1 == message_count) break;
}
unsigned long lost_count (0), damaged_count (0), duplicate_count (0);
{
for (Status_List::Iterator i (received); !i.done (); i.advance ())
{
unsigned char* e;
i.next (e);
if (*e == 0) ++lost_count;
}
}
{
for (Status_List::Iterator i (damaged); !i.done (); i.advance ())
{
unsigned char* e;
i.next (e);
if (*e == 1) ++damaged_count;
}
}
{
for (Status_List::Iterator i (duplicate); !i.done (); i.advance ())
{
unsigned char* e;
i.next (e);
if (*e == 1) ++duplicate_count;
}
}
ACE_DEBUG ((LM_DEBUG,
"lost : %d\n"
"damaged : %d\n"
"duplicate : %d\n",
lost_count,
damaged_count,
duplicate_count));
if (damaged_count != 0 || duplicate_count != 0)
return 1;
if (lost_count != 0)
{
// It is ok to lose some number of messages at the beginning.
//
unsigned long count (0);
for (Status_List::Iterator i (received); !i.done (); i.advance ())
{
unsigned char* e;
i.next (e);
if (*e == 0)
++count;
else
break; // Seen first ok message.
}
if (lost_count != count)
return 1;
}
return 0;
}
catch (args const&)
{
ACE_ERROR ((LM_ERROR,
"usage: %s <IPv4 multicast address>:<port>\n", argv[0]));
}
return 1;
}
|
