135 lines
4.3 KiB
C++
135 lines
4.3 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_net_WebTransportStreamBase_h
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#define mozilla_net_WebTransportStreamBase_h
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#include "nsISupportsImpl.h"
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#include "mozilla/net/neqo_glue_ffi_generated.h"
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#include "mozilla/Mutex.h"
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#include "nsCOMPtr.h"
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#include "nsIAsyncInputStream.h"
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#include "nsIAsyncOutputStream.h"
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class nsIWebTransportSendStreamStats;
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class nsIWebTransportReceiveStreamStats;
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namespace mozilla::net {
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// https://www.ietf.org/archive/id/draft-ietf-webtrans-http2-10.html#section-5.2-2
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// Client initiated streams having even-numbered stream IDs and
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// server-initiated streams having odd-numbered stream IDs. Similarly, they
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// can be bidirectional or unidirectional, indicated by the second least
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// significant bit of the stream ID.
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class StreamId {
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public:
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constexpr explicit StreamId(uint64_t aId) : mId(aId) {}
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constexpr bool IsBiDi() const { return (mId & 0x02) == 0; }
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constexpr bool IsUni() const { return !IsBiDi(); }
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constexpr WebTransportStreamType StreamType() const {
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return IsBiDi() ? WebTransportStreamType::BiDi
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: WebTransportStreamType::UniDi;
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}
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constexpr bool IsClientInitiated() const { return (mId & 0x01) == 0; }
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constexpr bool IsServerInitiated() const { return !IsClientInitiated(); }
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void Next() { mId += 4; }
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constexpr uint64_t Index() const { return mId >> 2; }
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constexpr bool operator==(uint64_t aVal) const { return mId == aVal; }
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static constexpr StreamId From(uint64_t aVal) { return StreamId(aVal); }
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constexpr operator uint64_t() const { return mId; }
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private:
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uint64_t mId = 0;
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};
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class SenderFlowControlBase;
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class ReceiverFlowControlBase;
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class WebTransportStreamBase : public nsIInputStreamCallback,
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public nsIOutputStreamCallback {
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public:
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NS_INLINE_DECL_PURE_VIRTUAL_REFCOUNTING
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explicit WebTransportStreamBase(
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uint64_t aSessionId,
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std::function<void(Result<RefPtr<WebTransportStreamBase>, nsresult>&&)>&&
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aCallback);
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WebTransportStreamType StreamType() const { return mStreamType; }
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void GetWriterAndReader(nsIAsyncOutputStream** aOutOutputStream,
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nsIAsyncInputStream** aOutInputStream);
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virtual StreamId WebTransportStreamId() const = 0;
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virtual uint64_t GetStreamId() const = 0;
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virtual void SendStopSending(uint8_t aErrorCode) = 0;
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virtual void SendFin() = 0;
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virtual void Reset(uint64_t aErrorCode) = 0;
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virtual already_AddRefed<nsIWebTransportSendStreamStats>
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GetSendStreamStats() = 0;
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virtual already_AddRefed<nsIWebTransportReceiveStreamStats>
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GetReceiveStreamStats() = 0;
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virtual bool RecvDone() const = 0;
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virtual void SetSendOrder(Maybe<int64_t> aSendOrder) = 0;
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// Used only for testing.
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virtual SenderFlowControlBase* SenderFc() { return nullptr; }
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virtual ReceiverFlowControlBase* ReceiverFc() { return nullptr; }
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protected:
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virtual ~WebTransportStreamBase();
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nsresult InitOutputPipe();
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nsresult InitInputPipe();
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uint64_t mSessionId{UINT64_MAX};
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WebTransportStreamType mStreamType{WebTransportStreamType::BiDi};
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enum StreamRole {
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INCOMING,
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OUTGOING,
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} mStreamRole{INCOMING};
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enum SendStreamState {
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WAITING_TO_ACTIVATE,
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WAITING_DATA,
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SENDING,
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SEND_DONE,
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} mSendState{WAITING_TO_ACTIVATE};
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enum RecvStreamState { BEFORE_READING, READING, RECEIVED_FIN, RECV_DONE };
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Atomic<RecvStreamState> mRecvState{BEFORE_READING};
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nsresult mSocketOutCondition = NS_ERROR_NOT_INITIALIZED;
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nsresult mSocketInCondition = NS_ERROR_NOT_INITIALIZED;
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std::function<void(Result<RefPtr<WebTransportStreamBase>, nsresult>&&)>
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mStreamReadyCallback;
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Mutex mMutex{"WebTransportStreamBase::mMutex"};
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nsCOMPtr<nsIAsyncInputStream> mSendStreamPipeIn;
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nsCOMPtr<nsIAsyncOutputStream> mSendStreamPipeOut MOZ_GUARDED_BY(mMutex);
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nsCOMPtr<nsIAsyncInputStream> mReceiveStreamPipeIn MOZ_GUARDED_BY(mMutex);
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nsCOMPtr<nsIAsyncOutputStream> mReceiveStreamPipeOut;
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};
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} // namespace mozilla::net
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inline nsISupports* ToSupports(mozilla::net::WebTransportStreamBase* aStream) {
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return static_cast<nsIInputStreamCallback*>(aStream);
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}
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#endif // mozilla_net_WebTransportStreamBase_h
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