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00e67c1bf9
Reviewed By: lnicco Differential Revision: D33587012 fbshipit-source-id: 972eb440f0156c9c04aa6e8787561b18295c1a97
61 lines
1.9 KiB
C++
61 lines
1.9 KiB
C++
/*
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#pragma once
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#include <quic/codec/QuicPacketBuilder.h>
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#include <quic/state/StateData.h>
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namespace quic {
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/**
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* A PacketRebuilder is a packet builder that takes in a list of frames, and
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* pass them onto a wrapped builder to rebuild the packet. Note that you still
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* buildPacket() from the wrapped in builder.
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* TODO: The cloning builder only clones stream data that has not already been
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* resset or closed. It is possible that a packet may have contained data for
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* only closed streams. In that case we would only write out the header.
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* This is a waste, so we should do something about this in the future.
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*/
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class PacketRebuilder {
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public:
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PacketRebuilder(
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PacketBuilderInterface& regularBuilder,
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QuicConnectionStateBase& conn);
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folly::Optional<PacketEvent> rebuildFromPacket(OutstandingPacket& packet);
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// TODO: Same as passing cipherOverhead into the CloningScheduler, this really
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// is a sad way to solve the writableBytes problem.
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uint64_t getHeaderBytes() const;
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private:
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/**
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* A helper function that takes a OutstandingPacket that's not processed, and
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* return its associatedEvent. If this packet has never been cloned, then
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* create the associatedEvent and add it into outstandings.packetEvents first.
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*/
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PacketEvent cloneOutstandingPacket(OutstandingPacket& packet);
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bool retransmittable(const QuicStreamState& stream) const {
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return stream.sendState == StreamSendState::Open;
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}
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const BufQueue* cloneCryptoRetransmissionBuffer(
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const WriteCryptoFrame& frame,
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const QuicCryptoStream& stream);
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const BufQueue* cloneRetransmissionBuffer(
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const WriteStreamFrame& frame,
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const QuicStreamState* stream);
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private:
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PacketBuilderInterface& builder_;
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QuicConnectionStateBase& conn_;
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};
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} // namespace quic
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