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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.
// A toy server, which listens on a specified address for QUIC traffic and
// handles incoming responses.
//
// Note that this server is intended to verify correctness of the client and is
// in no way expected to be performant.
#ifndef NET_THIRD_PARTY_QUIC_TOOLS_QUIC_SERVER_H_
#define NET_THIRD_PARTY_QUIC_TOOLS_QUIC_SERVER_H_
#include <memory>
#include "base/macros.h"
#include "net/quic/quic_chromium_connection_helper.h"
#include "net/third_party/quic/core/crypto/quic_crypto_server_config.h"
#include "net/third_party/quic/core/quic_config.h"
#include "net/third_party/quic/core/quic_framer.h"
#include "net/third_party/quic/core/quic_packet_writer.h"
#include "net/third_party/quic/core/quic_version_manager.h"
#include "net/third_party/quic/platform/api/quic_epoll.h"
#include "net/third_party/quic/platform/api/quic_socket_address.h"
#include "net/third_party/quic/tools/quic_simple_server_backend.h"
#include "net/tools/epoll_server/epoll_server.h"
namespace quic {
namespace test {
class QuicServerPeer;
} // namespace test
class QuicDispatcher;
class QuicPacketReader;
class QuicServer : public QuicEpollCallbackInterface {
public:
QuicServer(std::unique_ptr<ProofSource> proof_source,
QuicSimpleServerBackend* quic_simple_server_backend);
QuicServer(std::unique_ptr<ProofSource> proof_source,
const QuicConfig& config,
const QuicCryptoServerConfig::ConfigOptions& server_config_options,
const ParsedQuicVersionVector& supported_versions,
QuicSimpleServerBackend* quic_simple_server_backend);
QuicServer(const QuicServer&) = delete;
QuicServer& operator=(const QuicServer&) = delete;
~QuicServer() override;
QuicString Name() const override { return "QuicServer"; }
// Start listening on the specified address.
bool CreateUDPSocketAndListen(const QuicSocketAddress& address);
// Wait up to 50ms, and handle any events which occur.
void WaitForEvents();
void Start();
void Run();
// Server deletion is imminent. Start cleaning up the epoll server.
virtual void Shutdown();
// From EpollCallbackInterface
void OnRegistration(QuicEpollServer* eps, int fd, int event_mask) override {}
void OnModification(int fd, int event_mask) override {}
void OnEvent(int fd, QuicEpollEvent* event) override;
void OnUnregistration(int fd, bool replaced) override {}
void OnShutdown(QuicEpollServer* eps, int fd) override {}
void SetChloMultiplier(size_t multiplier) {
crypto_config_.set_chlo_multiplier(multiplier);
}
void SetPreSharedKey(QuicStringPiece key) {
crypto_config_.set_pre_shared_key(key);
}
bool overflow_supported() { return overflow_supported_; }
QuicPacketCount packets_dropped() { return packets_dropped_; }
int port() { return port_; }
protected:
virtual QuicPacketWriter* CreateWriter(int fd);
virtual QuicDispatcher* CreateQuicDispatcher();
const QuicConfig& config() const { return config_; }
const QuicCryptoServerConfig& crypto_config() const { return crypto_config_; }
QuicEpollServer* epoll_server() { return &epoll_server_; }
QuicDispatcher* dispatcher() { return dispatcher_.get(); }
QuicVersionManager* version_manager() { return &version_manager_; }
QuicSimpleServerBackend* server_backend() {
return quic_simple_server_backend_;
}
void set_silent_close(bool value) { silent_close_ = value; }
private:
friend class quic::test::QuicServerPeer;
// Initialize the internal state of the server.
void Initialize();
// Accepts data from the framer and demuxes clients to sessions.
std::unique_ptr<QuicDispatcher> dispatcher_;
// Frames incoming packets and hands them to the dispatcher.
QuicEpollServer epoll_server_;
// The port the server is listening on.
int port_;
// Listening connection. Also used for outbound client communication.
int fd_;
// If overflow_supported_ is true this will be the number of packets dropped
// during the lifetime of the server. This may overflow if enough packets
// are dropped.
QuicPacketCount packets_dropped_;
// True if the kernel supports SO_RXQ_OVFL, the number of packets dropped
// because the socket would otherwise overflow.
bool overflow_supported_;
// If true, do not call Shutdown on the dispatcher. Connections will close
// without sending a final connection close.
bool silent_close_;
// config_ contains non-crypto parameters that are negotiated in the crypto
// handshake.
QuicConfig config_;
// crypto_config_ contains crypto parameters for the handshake.
QuicCryptoServerConfig crypto_config_;
// crypto_config_options_ contains crypto parameters for the handshake.
QuicCryptoServerConfig::ConfigOptions crypto_config_options_;
// Used to generate current supported versions.
QuicVersionManager version_manager_;
// Point to a QuicPacketReader object on the heap. The reader allocates more
// space than allowed on the stack.
std::unique_ptr<QuicPacketReader> packet_reader_;
QuicSimpleServerBackend* quic_simple_server_backend_; // unowned.
base::WeakPtrFactory<QuicServer> weak_factory_;
};
} // namespace quic
#endif // NET_THIRD_PARTY_QUIC_TOOLS_QUIC_SERVER_H_