Index: net/quic/quic_packet_generator.h |
diff --git a/net/quic/quic_packet_generator.h b/net/quic/quic_packet_generator.h |
deleted file mode 100644 |
index 498c95ce091bfe168eafc0b25a122b7ba4e367ab..0000000000000000000000000000000000000000 |
--- a/net/quic/quic_packet_generator.h |
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@@ -1,225 +0,0 @@ |
-// 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. |
-// |
-// Responsible for generating packets on behalf of a QuicConnection. |
-// Packets are serialized just-in-time. Control frames are queued. |
-// Ack and Feedback frames will be requested from the Connection |
-// just-in-time. When a packet needs to be sent, the Generator |
-// will serialize a packet and pass it to QuicConnection::SendOrQueuePacket() |
-// |
-// The Generator's mode of operation is controlled by two conditions: |
-// |
-// 1) Is the Delegate writable? |
-// |
-// If the Delegate is not writable, then no operations will cause |
-// a packet to be serialized. In particular: |
-// * SetShouldSendAck will simply record that an ack is to be sent. |
-// * AddControlFrame will enqueue the control frame. |
-// * ConsumeData will do nothing. |
-// |
-// If the Delegate is writable, then the behavior depends on the second |
-// condition: |
-// |
-// 2) Is the Generator in batch mode? |
-// |
-// If the Generator is NOT in batch mode, then each call to a write |
-// operation will serialize one or more packets. The contents will |
-// include any previous queued frames. If an ack should be sent |
-// but has not been sent, then the Delegate will be asked to create |
-// an Ack frame which will then be included in the packet. When |
-// the write call completes, the current packet will be serialized |
-// and sent to the Delegate, even if it is not full. |
-// |
-// If the Generator is in batch mode, then each write operation will |
-// add data to the "current" packet. When the current packet becomes |
-// full, it will be serialized and sent to the packet. When batch |
-// mode is ended via |FinishBatchOperations|, the current packet |
-// will be serialzied, even if it is not full. |
- |
-#ifndef NET_QUIC_QUIC_PACKET_GENERATOR_H_ |
-#define NET_QUIC_QUIC_PACKET_GENERATOR_H_ |
- |
-#include <stddef.h> |
-#include <stdint.h> |
- |
-#include <list> |
- |
-#include "base/macros.h" |
-#include "net/quic/quic_packet_creator.h" |
-#include "net/quic/quic_sent_packet_manager.h" |
-#include "net/quic/quic_types.h" |
- |
-namespace net { |
- |
-namespace test { |
-class QuicPacketGeneratorPeer; |
-} // namespace test |
- |
-class NET_EXPORT_PRIVATE QuicPacketGenerator { |
- public: |
- class NET_EXPORT_PRIVATE DelegateInterface |
- : public QuicPacketCreator::DelegateInterface { |
- public: |
- ~DelegateInterface() override {} |
- // Consults delegate whether a packet should be generated. |
- virtual bool ShouldGeneratePacket(HasRetransmittableData retransmittable, |
- IsHandshake handshake) = 0; |
- virtual const QuicFrame GetUpdatedAckFrame() = 0; |
- virtual void PopulateStopWaitingFrame( |
- QuicStopWaitingFrame* stop_waiting) = 0; |
- }; |
- |
- QuicPacketGenerator(QuicConnectionId connection_id, |
- QuicFramer* framer, |
- QuicRandom* random_generator, |
- QuicBufferAllocator* buffer_allocator, |
- DelegateInterface* delegate); |
- |
- ~QuicPacketGenerator(); |
- |
- // Indicates that an ACK frame should be sent. |
- // If |also_send_stop_waiting| is true, then it also indicates that a |
- // STOP_WAITING frame should be sent as well. |
- // The contents of the frame(s) will be generated via a call to the delegate |
- // CreateAckFrame() when the packet is serialized. |
- void SetShouldSendAck(bool also_send_stop_waiting); |
- |
- void AddControlFrame(const QuicFrame& frame); |
- |
- // Given some data, may consume part or all of it and pass it to the |
- // packet creator to be serialized into packets. If not in batch |
- // mode, these packets will also be sent during this call. |
- // |delegate| (if not nullptr) will be informed once all packets sent as a |
- // result of this call are ACKed by the peer. |
- QuicConsumedData ConsumeData(QuicStreamId id, |
- QuicIOVector iov, |
- QuicStreamOffset offset, |
- bool fin, |
- QuicAckListenerInterface* listener); |
- |
- // Sends as many data only packets as allowed by the send algorithm and the |
- // available iov. |
- // This path does not support FEC, padding, or bundling pending frames. |
- QuicConsumedData ConsumeDataFastPath(QuicStreamId id, |
- const QuicIOVector& iov, |
- QuicStreamOffset offset, |
- bool fin, |
- QuicAckListenerInterface* listener); |
- |
- // Generates an MTU discovery packet of specified size. |
- void GenerateMtuDiscoveryPacket(QuicByteCount target_mtu, |
- QuicAckListenerInterface* listener); |
- |
- // Indicates whether batch mode is currently enabled. |
- bool InBatchMode(); |
- // Disables flushing. |
- void StartBatchOperations(); |
- // Enables flushing and flushes queued data which can be sent. |
- void FinishBatchOperations(); |
- |
- // Flushes all queued frames, even frames which are not sendable. |
- void FlushAllQueuedFrames(); |
- |
- bool HasQueuedFrames() const; |
- |
- // Whether the pending packet has no frames in it at the moment. |
- bool IsPendingPacketEmpty() const; |
- |
- // Makes the framer not serialize the protocol version in sent packets. |
- void StopSendingVersion(); |
- |
- // SetDiversificationNonce sets the nonce that will be sent in each public |
- // header of packets encrypted at the initial encryption level. Should only |
- // be called by servers. |
- void SetDiversificationNonce(const DiversificationNonce nonce); |
- |
- // Creates a version negotiation packet which supports |supported_versions|. |
- // Caller owns the created packet. Also, sets the entropy hash of the |
- // serialized packet to a random bool and returns that value as a member of |
- // SerializedPacket. |
- QuicEncryptedPacket* SerializeVersionNegotiationPacket( |
- const QuicVersionVector& supported_versions); |
- |
- // Re-serializes frames with the original packet's packet number length. |
- // Used for retransmitting packets to ensure they aren't too long. |
- void ReserializeAllFrames(const PendingRetransmission& retransmission, |
- char* buffer, |
- size_t buffer_len); |
- |
- // Update the packet number length to use in future packets as soon as it |
- // can be safely changed. |
- void UpdateSequenceNumberLength(QuicPacketNumber least_packet_awaited_by_peer, |
- QuicPacketCount max_packets_in_flight); |
- |
- // Set the minimum number of bytes for the connection id length; |
- void SetConnectionIdLength(uint32_t length); |
- |
- // Sets the encrypter to use for the encryption level. |
- void SetEncrypter(EncryptionLevel level, QuicEncrypter* encrypter); |
- |
- // Sets the encryption level that will be applied to new packets. |
- void set_encryption_level(EncryptionLevel level); |
- |
- // packet number of the last created packet, or 0 if no packets have been |
- // created. |
- QuicPacketNumber packet_number() const; |
- |
- // Returns the maximum length a current packet can actually have. |
- QuicByteCount GetCurrentMaxPacketLength() const; |
- |
- // Set maximum packet length in the creator immediately. May not be called |
- // when there are frames queued in the creator. |
- void SetMaxPacketLength(QuicByteCount length); |
- |
- // Sets |path_id| to be the path on which next packet is generated. |
- void SetCurrentPath(QuicPathId path_id, |
- QuicPacketNumber least_packet_awaited_by_peer, |
- QuicPacketCount max_packets_in_flight); |
- |
- void set_debug_delegate(QuicPacketCreator::DebugDelegate* debug_delegate) { |
- packet_creator_.set_debug_delegate(debug_delegate); |
- } |
- |
- const QuicAckFrame& pending_ack_frame() const { return pending_ack_frame_; } |
- |
- private: |
- friend class test::QuicPacketGeneratorPeer; |
- |
- void SendQueuedFrames(bool flush); |
- |
- // Test to see if we have pending ack, or control frames. |
- bool HasPendingFrames() const; |
- // Returns true if addition of a pending frame (which might be |
- // retransmittable) would still allow the resulting packet to be sent now. |
- bool CanSendWithNextPendingFrameAddition() const; |
- // Add exactly one pending frame, preferring ack frames over control frames. |
- // Returns true if a pending frame is successfully added. |
- // Returns false and flushes current open packet if the pending frame cannot |
- // fit into current open packet. |
- bool AddNextPendingFrame(); |
- |
- DelegateInterface* delegate_; |
- |
- QuicPacketCreator packet_creator_; |
- QuicFrames queued_control_frames_; |
- |
- // True if batch mode is currently enabled. |
- bool batch_mode_; |
- |
- // Flags to indicate the need for just-in-time construction of a frame. |
- bool should_send_ack_; |
- bool should_send_stop_waiting_; |
- // If we put a non-retransmittable frame in this packet, then we have to hold |
- // a reference to it until we flush (and serialize it). Retransmittable frames |
- // are referenced elsewhere so that they can later be (optionally) |
- // retransmitted. |
- QuicAckFrame pending_ack_frame_; |
- QuicStopWaitingFrame pending_stop_waiting_frame_; |
- |
- DISALLOW_COPY_AND_ASSIGN(QuicPacketGenerator); |
-}; |
- |
-} // namespace net |
- |
-#endif // NET_QUIC_QUIC_PACKET_GENERATOR_H_ |