/*! initialize pipeline
*/
void GroupSockPipeline::initialize(void)
{
UInt32 index,len;
UInt32 nextPort;
std::string nextHost;
BinaryMessage message;
for(index = 0 ; index<_sockets.size() ; ++index)
{
len = _sockets[index].recv(message);
if(len == 0)
throw ReadError("Channel closed\n");
nextHost = message.getString();
nextPort = message.getUInt32();
message.clear();
if(index == 0)
{
message.putUInt32(true);
_sockets[_sockets.size()-1].send(message);
for(;;)
{
try
{
_next.connect(SocketAddress(nextHost.c_str(),
nextPort));
break;
}
catch(...)
{
}
}
}
else
{
message.clear();
message.putUInt32(false);
message.putString(nextHost);
message.putUInt32(nextPort);
_sockets[index-1].send(message);
}
}
_initialized = true;
}
void ClusterServer::acceptClient(void)
{
BinaryMessage msg;
DgramSocket serviceSock;
SocketAddress addr;
std::string service;
std::string connectionType;
UInt32 readable;
bool connected=false;
std::string address;
bool bound = false;
SINFO << "Waiting for request of "
<< _serviceName
<< std::endl;
try
{
if(!_requestAddress.empty())
{
// create connection
_connection = ConnectionFactory::the()->createPoint(
_connectionType);
if(_connection)
{
// set interface
_connection->setInterface(_interface);
// bind connection
try
{
// bind to requested address
_boundAddress = _connection->bind(_requestAddress);
bound = true;
}
catch(...)
{
SINFO << "Unable to bind, use name as symbolic "
<< "service name"
<< std::endl;
}
}
}
serviceSock.open();
serviceSock.setReusePort(true);
// join to multicast group
if(!_serviceGroup.empty())
{
SocketAddress groupAddress =
SocketAddress(_serviceGroup.c_str(),
_servicePort);
if(groupAddress.isMulticast())
{
SINFO << "wait for request on multicast:"
<< _serviceGroup << std::endl;
serviceSock.bind(SocketAddress(SocketAddress::ANY,
_servicePort));
serviceSock.join(SocketAddress(groupAddress));
}
else
{
SINFO << "wait for request by broadcast:"
<< _serviceGroup << std::endl;
serviceSock.bind(SocketAddress(groupAddress));
}
}
else
{
SINFO << "wait for request by broadcast" << std::endl;
serviceSock.bind(SocketAddress(SocketAddress::ANY,
_servicePort));
}
while(!connected)
{
try
{
if(_connection)
readable = serviceSock.waitReadable(.01);
else
readable = true;
if(readable)
{
serviceSock.recvFrom(msg,addr);
service = msg.getString();
connectionType = msg.getString();
SINFO << "Request for "
<< service << " "
<< connectionType
<< std::endl;
if(service == _serviceName)
{
// remove old connection if typename missmaches
if(_connection &&
_connection->getType()->getName() != connectionType)
{
delete _connection;
_connection = NULL;
}
// try to create connection
if(!_connection)
{
// create connection
_connection =
ConnectionFactory::the()->createPoint(
connectionType);
if(_connection)
{
// set interface
_connection->setInterface(_interface);
// bind connection
_boundAddress = _connection->bind(
_requestAddress);
bound = true;
}
else
{
SINFO << "Unknown connection type '"
<< connectionType << "'" << std::endl;
}
}
if(_connection)
{
msg.clear ( );
msg.putString(_serviceName );
msg.putString(_boundAddress);
serviceSock.sendTo(msg, addr);
SINFO << "Response "
<< connectionType << ":"
<< _boundAddress
<< std::endl;
}
}
}
}
catch(SocketConnReset &e)
{
// ignore if there is a connection. This can happen, if
// a client has send a request. The server has send an
// answer meanwile the client has send a second request
// the client gets the answer to the first request and
// the server tries to send a second answer. The second
// answer can not be delivered because the client has
// closed its service port. This is a win-socket problem.
SWARNING << e.what() << std::endl;
// if there is no connection, then its a real problem
if(!_connection)
throw;
}
catch(OSG_STDEXCEPTION_NAMESPACE::exception &e)
{
SWARNING << e.what() << std::endl;
}
try
{
// try to accept
if(bound && _connection && _connection->acceptGroup(0.2) >= 0)
{
connected = true;
SINFO << "Connection accepted "
<< _boundAddress
<< std::endl;
}
}
catch(OSG_STDEXCEPTION_NAMESPACE::exception &e)
{
SWARNING << e.what() << std::endl;
}
}
serviceSock.close();
}
catch(OSG_STDEXCEPTION_NAMESPACE::exception &)
{
throw;
}
}