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// Copyright (c) 2012 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 THIRD_PARTY_BLINK_RENDERER_MODULES_P2P_PORT_ALLOCATOR_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_P2P_PORT_ALLOCATOR_H_

#include <memory>

#include "base/macros.h"
#include "base/memory/scoped_refptr.h"
#include "third_party/blink/renderer/modules/modules_export.h"
#include "third_party/webrtc/p2p/client/basic_port_allocator.h"
#include "url/gurl.h"

namespace blink {

class P2PSocketDispatcher;

class MODULES_EXPORT P2PPortAllocator : public cricket::BasicPortAllocator {
 public:
  struct Config {
    // Enable non-proxied UDP-based transport when set to true. When set to
    // false, it effectively disables all UDP traffic until UDP-supporting proxy
    // RETURN is available in the future.
    bool enable_nonproxied_udp = true;

    // Request binding to individual NICs. Whether multiple routes is allowed is
    // subject to the permission check on mic/camera. When specified as false or
    // the permission request is denied, it still uses the default local address
    // to generate a single local candidate. TODO(guoweis): Rename this to
    // |request_multiple_routes|.
    bool enable_multiple_routes = true;

    // Enable exposing the default local address when set to true. This is
    // only in effect when the |enable_multiple_routes| is false or the
    // permission check of mic/camera is denied.
    bool enable_default_local_candidate = true;
  };

  P2PPortAllocator(const scoped_refptr<P2PSocketDispatcher>& socket_dispatcher,
                   std::unique_ptr<rtc::NetworkManager> network_manager,
                   rtc::PacketSocketFactory* socket_factory,
                   const Config& config,
                   const GURL& origin);
  ~P2PPortAllocator() override;

  // Will also initialize the network manager passed into the constructor.
  void Initialize() override;

 private:
  std::unique_ptr<rtc::NetworkManager> network_manager_;
  scoped_refptr<P2PSocketDispatcher> socket_dispatcher_;
  Config config_;
  GURL origin_;

  DISALLOW_COPY_AND_ASSIGN(P2PPortAllocator);
};

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_MODULES_P2P_PORT_ALLOCATOR_H_