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// Copyright 2013 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/test_tools/server_thread.h"

#include "net/tools/quic/quic_dispatcher.h"
#include "net/tools/quic/test_tools/quic_server_peer.h"

namespace net {
namespace tools {
namespace test {

ServerThread::ServerThread(QuicServer* server,
                           IPEndPoint address,
                           bool strike_register_no_startup_period)
    : SimpleThread("server_thread"),
      confirmed_(true, false),
      pause_(true, false),
      paused_(true, false),
      resume_(true, false),
      quit_(true, false),
      server_(server),
      address_(address),
      port_(0),
      initialized_(false) {
  if (strike_register_no_startup_period) {
    server_->SetStrikeRegisterNoStartupPeriod();
  }
}

ServerThread::~ServerThread() {}

void ServerThread::Initialize() {
  if (initialized_) {
    return;
  }

  server_->Listen(address_);

  port_lock_.Acquire();
  port_ = server_->port();
  port_lock_.Release();

  initialized_ = true;
}

void ServerThread::Run() {
  if (!initialized_) {
    Initialize();
  }

  while (!quit_.IsSignaled()) {
    if (pause_.IsSignaled() && !resume_.IsSignaled()) {
      paused_.Signal();
      resume_.Wait();
    }
    server_->WaitForEvents();
    MaybeNotifyOfHandshakeConfirmation();
  }

  server_->Shutdown();
}

int ServerThread::GetPort() {
  port_lock_.Acquire();
  int rc = port_;
  port_lock_.Release();
  return rc;
}

void ServerThread::WaitForCryptoHandshakeConfirmed() {
  confirmed_.Wait();
}

void ServerThread::Pause() {
  DCHECK(!pause_.IsSignaled());
  pause_.Signal();
  paused_.Wait();
}

void ServerThread::Resume() {
  DCHECK(!resume_.IsSignaled());
  DCHECK(pause_.IsSignaled());
  resume_.Signal();
}

void ServerThread::Quit() {
  if (pause_.IsSignaled() && !resume_.IsSignaled()) {
    resume_.Signal();
  }
  quit_.Signal();
}

void ServerThread::MaybeNotifyOfHandshakeConfirmation() {
  if (confirmed_.IsSignaled()) {
    // Only notify once.
    return;
  }
  QuicDispatcher* dispatcher = QuicServerPeer::GetDispatcher(server());
  if (dispatcher->session_map().empty()) {
    // Wait for a session to be created.
    return;
  }
  QuicSession* session = dispatcher->session_map().begin()->second;
  if (session->IsCryptoHandshakeConfirmed()) {
    confirmed_.Signal();
  }
}

}  // namespace test
}  // namespace tools
}  // namespace net