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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef REMOTING_JINGLE_GLUE_JINGLE_INFO_REQUEST_H_
#define REMOTING_JINGLE_GLUE_JINGLE_INFO_REQUEST_H_
#include <set>
#include <string>
#include <vector>
#include "base/basictypes.h"
#include "base/callback.h"
#include "base/memory/scoped_ptr.h"
#include "third_party/libjingle/source/talk/base/sigslot.h"
class Task;
namespace buzz {
class XmlElement;
} // namespace buzz
namespace talk_base {
class SocketAddress;
} // namespace talk_base
namespace remoting {
class IqRequest;
class HostResolver;
class HostResolverFactory;
// JingleInfoRequest handles requesting STUN/Relay infromation from
// the Google Talk network. The query is made when Send() is
// called. The callback given to Send() is called when response to the
// request is received.
//
// This class is not threadsafe and should be used on the same thread it is
// created on.
//
// TODO(ajwong): Add support for a timeout.
class JingleInfoRequest : public sigslot::has_slots<> {
public:
// Callback to receive the Jingle configuration settings. The argumetns are
// passed by pointer so the receive may call swap on them. The receiver does
// NOT own the arguments, which are guaranteed only to be alive for the
// duration of the callback.
typedef base::Callback<void (
const std::string&, const std::vector<std::string>&,
const std::vector<talk_base::SocketAddress>&)> OnJingleInfoCallback;
explicit JingleInfoRequest(IqRequest* request,
HostResolverFactory* host_resolver_factory);
virtual ~JingleInfoRequest();
void Send(const OnJingleInfoCallback& callback);
private:
struct PendingDnsRequest;
void OnResponse(const buzz::XmlElement* stanza);
void OnStunAddressResponse(HostResolver* resolver,
const talk_base::SocketAddress& address);
HostResolverFactory* host_resolver_factory_;
scoped_ptr<IqRequest> request_;
OnJingleInfoCallback on_jingle_info_cb_;
std::vector<std::string> relay_hosts_;
std::vector<talk_base::SocketAddress> stun_hosts_;
std::string relay_token_;
std::set<HostResolver*> stun_dns_requests_;
DISALLOW_COPY_AND_ASSIGN(JingleInfoRequest);
};
} // namespace remoting
#endif // REMOTING_JINGLE_GLUE_JINGLE_INFO_REQUEST_H_
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