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// **********************************************************************
//
// Copyright (c) 2003-2016 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
#include <Ice/uwp/TcpAcceptor.h>
#include <Ice/uwp/TcpTransceiver.h>
#include <Ice/uwp/TcpEndpointI.h>
#include <Ice/ProtocolInstance.h>
#include <Ice/LocalException.h>
#include <Ice/LoggerUtil.h>
#include <Ice/Exception.h>
#include <Ice/Properties.h>
#include <IceUtil/StringUtil.h>
using namespace std;
using namespace Ice;
using namespace IceInternal;
using namespace Platform;
using namespace Windows::Foundation;
using namespace Windows::Storage::Streams;
using namespace Windows::Networking;
using namespace Windows::Networking::Sockets;
IceUtil::Shared* IceInternal::upCast(TcpAcceptor* p) { return p; }
NativeInfoPtr
IceInternal::TcpAcceptor::getNativeInfo()
{
return this;
}
void
IceInternal::TcpAcceptor::setCompletedHandler(SocketOperationCompletedHandler^ handler)
{
_completedHandler = handler;
}
void
IceInternal::TcpAcceptor::close()
{
IceUtil::Mutex::Lock lock(_mutex);
if(_acceptPending)
{
assert(_accepted.empty());
_completedHandler(SocketOperationRead);
_acceptPending = false;
}
else if(!_accepted.empty())
{
for(deque<StreamSocket^>::const_iterator p = _accepted.begin(); p != _accepted.end(); ++p)
{
closeSocket(*p);
}
_accepted.clear();
}
if(_fd != INVALID_SOCKET)
{
closeSocketNoThrow(_fd);
_fd = INVALID_SOCKET;
}
}
EndpointIPtr
IceInternal::TcpAcceptor::listen()
{
try
{
const_cast<Address&>(_addr) = doBind(_fd, _addr);
}
catch(...)
{
_fd = INVALID_SOCKET;
throw;
}
_endpoint = _endpoint->endpoint(this);
return _endpoint;
}
void
IceInternal::TcpAcceptor::startAccept()
{
assert(_fd != INVALID_SOCKET);
//
// If there are already sockets waiting to be accepted, we just
// notify the selector that the acceptor is ready for acceting the
// new socket. Otherwise, we set the _acceptPending flag, when a
// new socket connection event is received, the message handler
// will notify the selector.
//
IceUtil::Mutex::Lock lock(_mutex);
assert(!_acceptPending);
if(!_accepted.empty())
{
_completedHandler(SocketOperationRead);
}
else
{
_acceptPending = true;
}
}
void
IceInternal::TcpAcceptor::finishAccept()
{
//
// Nothing to do, we just check there's at least one accepted
// socket or the acceptor was closed.
//
IceUtil::Mutex::Lock lock(_mutex);
assert(!_acceptPending && (!_accepted.empty() || _fd == INVALID_SOCKET));
}
TransceiverPtr
IceInternal::TcpAcceptor::accept()
{
if(_fd == INVALID_SOCKET) // Acceptor closed.
{
assert(_accepted.empty());
throw SocketException(__FILE__, __LINE__);
}
StreamSocket^ fd;
{
IceUtil::Mutex::Lock lock(_mutex);
assert(!_accepted.empty());
fd = _accepted.front();
_accepted.pop_front();
}
return new TcpTransceiver(_instance, fd, true);
}
string
IceInternal::TcpAcceptor::protocol() const
{
return _instance->protocol();
}
string
IceInternal::TcpAcceptor::toString() const
{
return addrToString(_addr);
}
string
IceInternal::TcpAcceptor::toDetailedString() const
{
ostringstream os;
os << "local address = " << toString();
vector<string> intfs = getHostsForEndpointExpand(inetAddrToString(_addr), _instance->protocolSupport(), true);
if(!intfs.empty())
{
os << "\nlocal interfaces = ";
os << IceUtilInternal::joinString(intfs, ", ");
}
return os.str();
}
int
IceInternal::TcpAcceptor::effectivePort() const
{
return getPort(_addr);
}
IceInternal::TcpAcceptor::TcpAcceptor(const TcpEndpointIPtr& endpoint,
const ProtocolInstancePtr& instance,
const string& host,
int port) :
_endpoint(endpoint),
_instance(instance),
_addr(getAddressForServer(host, port, _instance->protocolSupport(), instance->preferIPv6())),
_acceptPending(false)
{
_fd = ref new StreamSocketListener();
safe_cast<StreamSocketListener^>(_fd)->ConnectionReceived +=
ref new TypedEventHandler<StreamSocketListener^, StreamSocketListenerConnectionReceivedEventArgs^>(
[=](StreamSocketListener^, StreamSocketListenerConnectionReceivedEventArgs^ args)
{
queueAcceptedSocket(args->Socket);
});
}
IceInternal::TcpAcceptor::~TcpAcceptor()
{
assert(_fd == INVALID_SOCKET);
}
void
IceInternal::TcpAcceptor::queueAcceptedSocket(StreamSocket^ socket)
{
IceUtil::Mutex::Lock lock(_mutex);
if(_fd == INVALID_SOCKET) // Acceptor was closed.
{
closeSocket(socket);
return;
}
_accepted.push_back(socket);
//
// If the acceptor is waiting for a socket to be accepted, notify
// the selector that the acceptor is ready for "read". This will
// in turn caused finishAccept() and accept() to be called by the
// thread pool. If the acceptor isn't ready to accept the socket,
// it is just queued, when startAccept is called it will be dequed.
//
if(_acceptPending)
{
_completedHandler(SocketOperationRead);
_acceptPending = false;
}
}
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