Port QuicServer to Chrome network stack

net/quic/quic_dispatcher.h

 // Copyright 2014 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 server side dispatcher which dispatches a given client's data to their
 // stream.
 
 #ifndef NET_QUIC_QUIC_DISPATCHER_H_
 #define NET_QUIC_QUIC_DISPATCHER_H_
 
 #include <list>
 
 #include "base/basictypes.h"
 #include "base/containers/hash_tables.h"
 #include "base/memory/scoped_ptr.h"
 #include "net/base/ip_endpoint.h"
 #include "net/base/linked_hash_map.h"
 #include "net/quic/quic_blocked_writer_interface.h"
 #include "net/quic/quic_connection_helper.h"
 #include "net/quic/quic_protocol.h"
+#include "net/quic/quic_server_packet_writer.h"
 #include "net/quic/quic_server_session.h"
 #include "net/quic/quic_time_wait_list_manager.h"
 
 #if defined(COMPILER_GCC)
 namespace BASE_HASH_NAMESPACE {
 template <>
 struct hash<net::QuicBlockedWriterInterface*> {
   std::size_t operator()(const net::QuicBlockedWriterInterface* ptr) const {
     return hash<size_t>()(reinterpret_cast<size_t>(ptr));
   }
 };
 }
 #endif
 
 namespace net {
 
 class QuicConfig;
 class QuicCryptoServerConfig;
 class QuicPacketWriterWrapper;

[wtc, 2014/06/18 02:04:46]

Delete this unused forward declaration.

[dmziegler, 2014/06/18 20:13:41]

Done.

 class QuicSession;
 class UDPServerSocket;

[wtc, 2014/06/18 02:04:46]

Delete this unused forward declaration.

[dmziegler, 2014/06/18 20:13:41]

Done.

 
 namespace test {
 class QuicDispatcherPeer;
 }  // namespace test
 
 class DeleteSessionsAlarm;
 
-class QuicDispatcher : public QuicServerSessionVisitor {
+class QuicDispatcher : public QuicServerSessionVisitor,
+                       public QuicServerPacketWriterVisitor {
  public:
   // Ideally we'd have a linked_hash_set: the  boolean is unused.
   typedef linked_hash_map<QuicBlockedWriterInterface*, bool> WriteBlockedList;
 
   // Due to the way delete_sessions_closure_ is registered, the Dispatcher
   // must live until epoll_server Shutdown. |supported_versions| specifies the
   // list of supported QUIC versions.
   QuicDispatcher(const QuicConfig& config,
                  const QuicCryptoServerConfig& crypto_config,
                  const QuicVersionVector& supported_versions,
                  QuicConnectionHelperInterface* helper,
                  uint32 initial_flow_control_window_bytes);
 
   virtual ~QuicDispatcher();
 
   // Takes ownership of the packet writer
-  virtual void Initialize(QuicPacketWriter* writer);
+  virtual void Initialize(QuicServerPacketWriter* writer);
 
   // Process the incoming packet by creating a new session, passing it to
   // an existing session, or passing it to the TimeWaitListManager.
   virtual void ProcessPacket(const IPEndPoint& server_address,
                              const IPEndPoint& client_address,
                              const QuicEncryptedPacket& packet);
 
   // Called when the socket becomes writable to allow queued writes to happen.
-  virtual void OnCanWrite();
+  virtual void OnCanWrite() OVERRIDE;

[wtc, 2014/06/18 02:04:46]

Add a comment to point out that this method is in the
QuicServerPacketWriterVisitor interface.

[dmziegler, 2014/06/18 20:13:40]

Done (Is now QuicBlockedWriterInterface).

 
   // Returns true if there's anything in the blocked writer list.
   virtual bool HasPendingWrites() const;
 
   // Sends ConnectionClose frames to all connected clients.
   void Shutdown();
 
   // QuicServerSessionVisitor interface implementation:
   // Ensure that the closed connection is cleaned up asynchronously.
   virtual void OnConnectionClosed(QuicConnectionId connection_id,
@@ skipping 23 matching lines @@
 
   // Called by |framer_visitor_| when the public header has been parsed.
   virtual bool OnUnauthenticatedPublicHeader(
       const QuicPacketPublicHeader& header);
 
   // Create and return the time wait list manager for this dispatcher, which
   // will be owned by the dispatcher as time_wait_list_manager_
   virtual QuicTimeWaitListManager* CreateQuicTimeWaitListManager();
 
   // Replaces the packet writer with |writer|. Takes ownership of |writer|.
-  void set_writer(QuicPacketWriter* writer) {
+  void set_writer(QuicServerPacketWriter* writer) {
     writer_.reset(writer);
   }
 
   QuicTimeWaitListManager* time_wait_list_manager() {
     return time_wait_list_manager_.get();
   }
 
   const QuicVersionVector& supported_versions() const {
     return supported_versions_;
   }
@@ skipping 18 matching lines @@
   }
 
   const QuicConfig& config() const { return config_; }
 
   const QuicCryptoServerConfig& crypto_config() const { return crypto_config_; }
 
   QuicFramer* framer() { return &framer_; }
 
   QuicConnectionHelperInterface* helper() { return helper_; }
 
   QuicPacketWriter* writer() { return writer_.get(); }

[wtc, 2014/06/18 02:04:46]

Should this return a QuicServerPacketWriter* ?

[dmziegler, 2014/06/18 20:13:41]

Done.

 
   uint32 initial_flow_control_window_bytes() const {
     return initial_flow_control_window_bytes_;
   }
 
  private:
   class QuicFramerVisitor;
   friend class net::test::QuicDispatcherPeer;
 
   // Called by |framer_visitor_| when the private header has been parsed
@@ skipping 21 matching lines @@
   // The helper used for all connections. Owned by the server.
   QuicConnectionHelperInterface* helper_;
 
   // An alarm which deletes closed sessions.
   scoped_ptr<QuicAlarm> delete_sessions_alarm_;
 
   // The list of closed but not-yet-deleted sessions.
   std::list<QuicSession*> closed_session_list_;
 
   // The writer to write to the socket with.
-  scoped_ptr<QuicPacketWriter> writer_;
+  scoped_ptr<QuicServerPacketWriter> writer_;
 
   // This vector contains QUIC versions which we currently support.
   // This should be ordered such that the highest supported version is the first
   // element, with subsequent elements in descending order (versions can be
   // skipped as necessary).
   const QuicVersionVector supported_versions_;
 
   // Versions which do not support flow control (introduced in QUIC_VERSION_17).
   // This is used to construct new QuicConnections when flow control is disabled
   // via flag.
@@ skipping 19 matching lines @@
   // Initial flow control window size to advertize to peer on newly created
   // connections.
   const uint32 initial_flow_control_window_bytes_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicDispatcher);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_DISPATCHER_H_