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// Copyright 2015 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_PROTOCOL_TRANSPORT_CONTEXT_H_
#define REMOTING_PROTOCOL_TRANSPORT_CONTEXT_H_
#include <list>
#include <string>
#include <vector>
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "remoting/protocol/network_settings.h"
#include "remoting/protocol/transport.h"
#include "remoting/signaling/jingle_info_request.h"
namespace cricket {
class PortAllocator;
} // namespace cricket
namespace remoting {
class SignalStrategy;
namespace protocol {
class PortAllocatorFactory;
// TransportContext is responsible for storing all parameters required for
// P2P transport initialization. It's also responsible for making JingleInfo
// request and creation of PortAllocators configured according to the JingleInfo
// result.
class TransportContext : public base::RefCountedThreadSafe<TransportContext> {
public:
typedef base::Callback<void(scoped_ptr<cricket::PortAllocator>
port_allocator)> CreatePortAllocatorCallback;
static scoped_refptr<TransportContext> ForTests(TransportRole role);
TransportContext(
SignalStrategy* signal_strategy,
scoped_ptr<PortAllocatorFactory> port_allocator_factory,
const NetworkSettings& network_settings,
TransportRole role);
// Prepares to create new PortAllocator instances. It may be called while
// connection is being negotiated to minimize the chance that the following
// CreatePortAllocator() will be blocking.
void Prepare();
// Creates new PortAllocator making sure that it has correct STUN and TURN
// information.
void CreatePortAllocator(const CreatePortAllocatorCallback& callback);
const NetworkSettings& network_settings() { return network_settings_; }
TransportRole role() { return role_; }
private:
friend class base::RefCountedThreadSafe<TransportContext>;
~TransportContext();
void EnsureFreshJingleInfo();
void OnJingleInfo(const std::string& relay_token,
const std::vector<std::string>& relay_hosts,
const std::vector<rtc::SocketAddress>& stun_hosts);
scoped_ptr<cricket::PortAllocator> CreatePortAllocatorInternal();
SignalStrategy* signal_strategy_;
scoped_ptr<PortAllocatorFactory> port_allocator_factory_;
NetworkSettings network_settings_;
TransportRole role_;
base::TimeTicks last_jingle_info_update_time_;
scoped_ptr<JingleInfoRequest> jingle_info_request_;
std::string relay_token_;
std::vector<std::string> relay_hosts_;
std::vector<rtc::SocketAddress> stun_hosts_;
// When there is an active |jingle_info_request_| stores list of callbacks to
// be called once the |jingle_info_request_| is finished.
std::list<CreatePortAllocatorCallback> pending_port_allocator_requests_;
DISALLOW_COPY_AND_ASSIGN(TransportContext);
};
} // namespace protocol
} // namespace remoting
#endif // REMOTING_PROTOCOL_TRANSPORT_CONTEXT_H_
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