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// **********************************************************************
//
// Copyright (c) 2003-2009 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/EndpointI.h>
#include <Ice/Instance.h>
#include <Ice/LocalException.h>
#include <Ice/Network.h>
using namespace std;
using namespace IceInternal;
Ice::LocalObject* IceInternal::upCast(EndpointI* p) { return p; }
IceUtil::Shared* IceInternal::upCast(EndpointHostResolver* p) { return p; }
vector<ConnectorPtr>
IceInternal::EndpointI::connectors(const vector<struct sockaddr_storage>& addrs) const
{
//
// This method must be extended by endpoints which use the EndpointHostResolver to create
// connectors from IP addresses.
//
assert(false);
return vector<ConnectorPtr>();
}
IceInternal::EndpointHostResolver::EndpointHostResolver(const InstancePtr& instance) :
_instance(instance),
_destroyed(false)
{
__setNoDelete(false);
start();
__setNoDelete(true);
}
void
IceInternal::EndpointHostResolver::resolve(const string& host, int port, const EndpointIPtr& endpoint,
const EndpointI_connectorsPtr& callback)
{
//
// Try to get the addresses without DNS lookup. If this doesn't work, we queue a resolve
// entry and the thread will take care of getting the endpoint addresses.
//
try
{
vector<struct sockaddr_storage> addrs = getAddresses(host, port, _instance->protocolSupport(), false);
if(!addrs.empty())
{
callback->connectors(endpoint->connectors(addrs));
return;
}
}
catch(const Ice::LocalException& ex)
{
callback->exception(ex);
return;
}
Lock sync(*this);
assert(!_destroyed);
ResolveEntry entry;
entry.host = host;
entry.port = port;
entry.endpoint = endpoint;
entry.callback = callback;
_queue.push_back(entry);
notify();
}
void
IceInternal::EndpointHostResolver::destroy()
{
Lock sync(*this);
assert(!_destroyed);
_destroyed = true;
notify();
}
void
IceInternal::EndpointHostResolver::run()
{
if(_instance->initializationData().threadHook)
{
_instance->initializationData().threadHook->start();
}
while(true)
{
ResolveEntry resolve;
{
Lock sync(*this);
while(!_destroyed && _queue.empty())
{
wait();
}
if(_destroyed)
{
break;
}
resolve = _queue.front();
_queue.pop_front();
}
try
{
resolve.callback->connectors(
resolve.endpoint->connectors(
getAddresses(resolve.host, resolve.port, _instance->protocolSupport(), true)));
}
catch(const Ice::LocalException& ex)
{
resolve.callback->exception(ex);
}
}
for(deque<ResolveEntry>::const_iterator p = _queue.begin(); p != _queue.end(); ++p)
{
p->callback->exception(Ice::CommunicatorDestroyedException(__FILE__, __LINE__));
}
_queue.clear();
if(_instance->initializationData().threadHook)
{
_instance->initializationData().threadHook->stop();
}
}
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