text: // 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.
  
  #include "net/tools/quic/quic_simple_client.h"
  
  #include <utility>
  
  #include "base/logging.h"
  #include "base/run_loop.h"
  #include "base/threading/thread_task_runner_handle.h"
  #include "net/base/net_errors.h"
  #include "net/http/http_request_info.h"
  #include "net/http/http_response_info.h"
  #include "net/log/net_log_source.h"
  #include "net/log/net_log_with_source.h"
  #include "net/quic/quic_chromium_alarm_factory.h"
  #include "net/quic/quic_chromium_connection_helper.h"
  #include "net/quic/quic_chromium_packet_reader.h"
  #include "net/quic/quic_chromium_packet_writer.h"
  #include "net/socket/udp_client_socket.h"
  #include "net/spdy/spdy_http_utils.h"
  #include "net/third_party/quiche/src/quic/core/crypto/quic_random.h"
  #include "net/third_party/quiche/src/quic/core/http/spdy_utils.h"
  #include "net/third_party/quiche/src/quic/core/quic_connection.h"
  #include "net/third_party/quiche/src/quic/core/quic_packets.h"
  #include "net/third_party/quiche/src/quic/core/quic_server_id.h"
  #include "net/third_party/quiche/src/quic/platform/api/quic_flags.h"
  #include "net/third_party/quiche/src/quic/platform/api/quic_ptr_util.h"
  #include "net/third_party/quiche/src/quic/tools/quic_simple_client_session.h"
  #include "net/third_party/quiche/src/spdy/core/spdy_header_block.h"
  
  using std::string;
  
  namespace net {
  
  QuicSimpleClient::QuicSimpleClient(
      quic::QuicSocketAddress server_address,
      const quic::QuicServerId& server_id,
      const quic::ParsedQuicVersionVector& supported_versions,
      std::unique_ptr<quic::ProofVerifier> proof_verifier)
      : quic::QuicSpdyClientBase(
            server_id,
            supported_versions,
            quic::QuicConfig(),
            CreateQuicConnectionHelper(),
            CreateQuicAlarmFactory(),
            quic::QuicWrapUnique(
                new QuicClientMessageLooplNetworkHelper(&clock_, this)),
            std::move(proof_verifier)),
        initialized_(false) {
    set_server_address(server_address);
  }
  
  QuicSimpleClient::~QuicSimpleClient() {
    if (connected()) {
      session()->connection()->CloseConnection(
          quic::QUIC_PEER_GOING_AWAY, "Shutting down",
          quic::ConnectionCloseBehavior::SEND_CONNECTION_CLOSE_PACKET);
    }
  }
  
  std::unique_ptr<quic::QuicSession> QuicSimpleClient::CreateQuicClientSession(
      const quic::ParsedQuicVersionVector& supported_versions,
      quic::QuicConnection* connection) {
    return std::make_unique<quic::QuicSimpleClientSession>(
        *config(), supported_versions, connection, server_id(), crypto_config(),
        push_promise_index(), drop_response_body());
  }
  
  QuicChromiumConnectionHelper* QuicSimpleClient::CreateQuicConnectionHelper() {
    return new QuicChromiumConnectionHelper(&clock_,
                                            quic::QuicRandom::GetInstance());
  }
  
  QuicChromiumAlarmFactory* QuicSimpleClient::CreateQuicAlarmFactory() {
    return new QuicChromiumAlarmFactory(base::ThreadTaskRunnerHandle::Get().get(),
                                        &clock_);
  }
  
  }  // namespace net
  