void OsclSocketServI::LoopbackSocket::Write()
//Write to the loopback socket
{
if (!iEnable)
return;
char tmpBuf[2] = {0, 0};
int nbytes, err;
bool wouldblock, ok;
OsclSendTo(iSocket, tmpBuf, 1, iAddr, ok, err, nbytes, wouldblock);
//if send failed, the select call will hang forever, so just go ahead and abort now.
OSCL_ASSERT(ok);
}
void OsclSocketServI::LoopbackSocket::Write()
//Write to the loopback socket
{
if (!iEnable)
return;
char tmpBuf[2] = {0, 0};
int nbytes, err;
bool wouldblock, ok;
OsclSendTo(iSocket, tmpBuf, 1, iAddr, ok, err, nbytes, wouldblock);
if (!ok)
{//the select call will hang forever, so just go ahead and panic now.
OsclError::Panic("OSCLSOCK", 1);
}
}
void OsclSocketServI::LoopbackSocket::Init(OsclSocketServI* aContainer)
//This will intialize the loopback socket that is used
//to wakeup a blocking select call.
{
iContainer = aContainer;
#if PV_OSCL_SOCKET_STATS_LOGGING
iStats.Construct(NULL, this);
#endif
//create the socket
bool ok;
int err;
OsclSocket(iSocket, OSCL_AF_INET, OSCL_SOCK_DATAGRAM, OSCL_IPPROTO_UDP, ok, err);
if (!ok)
{
ADD_LOOPSTATS(EOsclSocketServ_LoopsockError, err);
return ;
}
//set it to non-blocking mode
OsclSetNonBlocking(iSocket, ok, err);
if (!ok)
{//set non-blocking mode failed
ADD_LOOPSTATS(EOsclSocketServ_LoopsockError, err);
OsclCloseSocket(iSocket, ok, err);
return ;
}
//bind to any available port between 5000 and 10000.
OsclNetworkAddress myAddr("127.0.0.1", 5000);
while (myAddr.port < 10000)
{
OsclSocketI::MakeAddr(myAddr, iAddr);
OsclBind(iSocket, iAddr, ok, err);
if (!ok)
{
myAddr.port++;
}
else
{
break;//bind success!
}
}
if (!ok)
{//bind failed
ADD_LOOPSTATS(EOsclSocketServ_LoopsockError, err);
OsclCloseSocket(iSocket, ok, err);
return ;
}
//let's test a send & recv here just to be extra sure
//the loopsock is usable.
char tmpBuf[2] = {0, 0};
int nbytes;
bool wouldblock;
wouldblock = false;
ok = false;
nbytes = 0;
OsclSendTo(iSocket, tmpBuf, 1, iAddr, ok, err, nbytes, wouldblock);
if (!ok)
{
if (wouldblock)
{
//just skip the test
ok = true;
}
else
{
//send failed.
ADD_LOOPSTATS(EOsclSocketServ_LoopsockError, err);
OsclCloseSocket(iSocket, ok, err);
return ;
}
}
else
{
//send ok-- now try a recv
TOsclSockAddr sourceaddr;
TOsclSockAddrLen sourceaddrlen = sizeof(sourceaddr);
ok = false;
nbytes = 0;
OsclRecvFrom(iSocket, tmpBuf, sizeof(tmpBuf),
&sourceaddr,
&sourceaddrlen,
ok,
err,
nbytes,
wouldblock);
if (!ok)
{
if (wouldblock)
{
//just skip the test
ok = true;
}
else
{//recv failed.
ADD_LOOPSTATS(EOsclSocketServ_LoopsockError, err);
OsclCloseSocket(iSocket, ok, err);
return ;
}
}
}
//loopsock is ready to use
ADD_LOOPSTATS(EOsclSocketServ_LoopsockOk, myAddr.port);
#if PV_OSCL_SOCKET_STATS_LOGGING
iStats.Construct((OsclAny*)iSocket, this);
#endif
iEnable = true;
}