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Unified Diff: net/quic/quic_packet_generator.h

Issue 2193073003: Move shared files in net/quic/ into net/quic/core/ (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: io_thread_unittest.cc Created 4 years, 5 months ago
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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
+++ /dev/null
@@ -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_
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