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8c296bbcd4
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257 lines
9.4 KiB
C++
257 lines
9.4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set sw=2 ts=8 et tw=80 : */
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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_WebSocketChannel_h
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#define mozilla_net_WebSocketChannel_h
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#include "nsIURI.h"
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#include "nsISupports.h"
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#include "nsIInterfaceRequestor.h"
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#include "nsIEventTarget.h"
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#include "nsIStreamListener.h"
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#include "nsIProtocolHandler.h"
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#include "nsISocketTransport.h"
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#include "nsIAsyncInputStream.h"
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#include "nsIAsyncOutputStream.h"
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#include "nsILoadGroup.h"
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#include "nsITimer.h"
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#include "nsIDNSListener.h"
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#include "nsIHttpChannel.h"
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#include "nsIChannelEventSink.h"
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#include "nsIAsyncVerifyRedirectCallback.h"
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#include "nsIStringStream.h"
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#include "nsIHttpChannelInternal.h"
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#include "nsIRandomGenerator.h"
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#include "BaseWebSocketChannel.h"
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#include "nsCOMPtr.h"
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#include "nsString.h"
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#include "nsDeque.h"
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namespace mozilla { namespace net {
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class OutboundMessage;
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class OutboundEnqueuer;
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class nsWSAdmissionManager;
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class nsWSCompression;
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class CallOnMessageAvailable;
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class CallOnStop;
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class CallOnServerClose;
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class CallAcknowledge;
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// Used to enforce "1 connecting websocket per host" rule, and reconnect delays
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enum wsConnectingState {
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NOT_CONNECTING = 0, // Not yet (or no longer) trying to open connection
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CONNECTING_QUEUED, // Waiting for other ws to same host to finish opening
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CONNECTING_DELAYED, // Delayed by "reconnect after failure" algorithm
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CONNECTING_IN_PROGRESS // Started connection: waiting for result
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};
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class WebSocketChannel : public BaseWebSocketChannel,
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public nsIHttpUpgradeListener,
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public nsIStreamListener,
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public nsIInputStreamCallback,
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public nsIOutputStreamCallback,
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public nsITimerCallback,
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public nsIDNSListener,
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public nsIInterfaceRequestor,
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public nsIChannelEventSink
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{
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSIHTTPUPGRADELISTENER
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NS_DECL_NSIREQUESTOBSERVER
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NS_DECL_NSISTREAMLISTENER
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NS_DECL_NSIINPUTSTREAMCALLBACK
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NS_DECL_NSIOUTPUTSTREAMCALLBACK
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NS_DECL_NSITIMERCALLBACK
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NS_DECL_NSIDNSLISTENER
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NS_DECL_NSIINTERFACEREQUESTOR
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NS_DECL_NSICHANNELEVENTSINK
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// nsIWebSocketChannel methods BaseWebSocketChannel didn't implement for us
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//
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NS_IMETHOD AsyncOpen(nsIURI *aURI,
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const nsACString &aOrigin,
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nsIWebSocketListener *aListener,
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nsISupports *aContext);
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NS_IMETHOD Close(uint16_t aCode, const nsACString & aReason);
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NS_IMETHOD SendMsg(const nsACString &aMsg);
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NS_IMETHOD SendBinaryMsg(const nsACString &aMsg);
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NS_IMETHOD SendBinaryStream(nsIInputStream *aStream, uint32_t length);
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NS_IMETHOD GetSecurityInfo(nsISupports **aSecurityInfo);
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WebSocketChannel();
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static void Shutdown();
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enum {
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// Non Control Frames
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kContinuation = 0x0,
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kText = 0x1,
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kBinary = 0x2,
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// Control Frames
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kClose = 0x8,
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kPing = 0x9,
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kPong = 0xA
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};
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const static uint32_t kControlFrameMask = 0x8;
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const static uint8_t kMaskBit = 0x80;
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const static uint8_t kFinalFragBit = 0x80;
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protected:
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virtual ~WebSocketChannel();
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private:
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friend class OutboundEnqueuer;
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friend class nsWSAdmissionManager;
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friend class FailDelayManager;
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friend class CallOnMessageAvailable;
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friend class CallOnStop;
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friend class CallOnServerClose;
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friend class CallAcknowledge;
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// Common send code for binary + text msgs
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nsresult SendMsgCommon(const nsACString *aMsg, bool isBinary,
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uint32_t length, nsIInputStream *aStream = NULL);
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void EnqueueOutgoingMessage(nsDeque &aQueue, OutboundMessage *aMsg);
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void PrimeNewOutgoingMessage();
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void DeleteCurrentOutGoingMessage();
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void GeneratePong(uint8_t *payload, uint32_t len);
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void GeneratePing();
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void BeginOpen();
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nsresult HandleExtensions();
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nsresult SetupRequest();
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nsresult ApplyForAdmission();
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nsresult StartWebsocketData();
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uint16_t ResultToCloseCode(nsresult resultCode);
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void StopSession(nsresult reason);
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void AbortSession(nsresult reason);
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void ReleaseSession();
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void CleanupConnection();
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void IncrementSessionCount();
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void DecrementSessionCount();
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void EnsureHdrOut(uint32_t size);
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void ApplyMask(uint32_t mask, uint8_t *data, uint64_t len);
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bool IsPersistentFramePtr();
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nsresult ProcessInput(uint8_t *buffer, uint32_t count);
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bool UpdateReadBuffer(uint8_t *buffer, uint32_t count,
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uint32_t accumulatedFragments,
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uint32_t *available);
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nsCOMPtr<nsIEventTarget> mSocketThread;
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nsCOMPtr<nsIHttpChannelInternal> mChannel;
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nsCOMPtr<nsIHttpChannel> mHttpChannel;
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nsCOMPtr<nsICancelable> mDNSRequest;
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nsCOMPtr<nsIAsyncVerifyRedirectCallback> mRedirectCallback;
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nsCOMPtr<nsIRandomGenerator> mRandomGenerator;
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nsCString mHashedSecret;
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// Used as key for connection managment: Initially set to hostname from URI,
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// then to IP address (unless we're leaving DNS resolution to a proxy server)
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nsCString mAddress;
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int32_t mPort; // WS server port
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nsCOMPtr<nsISocketTransport> mTransport;
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nsCOMPtr<nsIAsyncInputStream> mSocketIn;
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nsCOMPtr<nsIAsyncOutputStream> mSocketOut;
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nsCOMPtr<nsITimer> mCloseTimer;
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uint32_t mCloseTimeout; /* milliseconds */
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nsCOMPtr<nsITimer> mOpenTimer;
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uint32_t mOpenTimeout; /* milliseconds */
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wsConnectingState mConnecting; /* 0 if not connecting */
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nsCOMPtr<nsITimer> mReconnectDelayTimer;
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nsCOMPtr<nsITimer> mPingTimer;
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uint32_t mPingTimeout; /* milliseconds */
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uint32_t mPingResponseTimeout; /* milliseconds */
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nsCOMPtr<nsITimer> mLingeringCloseTimer;
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const static int32_t kLingeringCloseTimeout = 1000;
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const static int32_t kLingeringCloseThreshold = 50;
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int32_t mMaxConcurrentConnections;
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uint32_t mRecvdHttpOnStartRequest : 1;
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uint32_t mRecvdHttpUpgradeTransport : 1;
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uint32_t mRequestedClose : 1;
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uint32_t mClientClosed : 1;
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uint32_t mServerClosed : 1;
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uint32_t mStopped : 1;
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uint32_t mCalledOnStop : 1;
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uint32_t mPingOutstanding : 1;
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uint32_t mAllowCompression : 1;
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uint32_t mAutoFollowRedirects : 1;
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uint32_t mReleaseOnTransmit : 1;
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uint32_t mTCPClosed : 1;
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uint32_t mWasOpened : 1;
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uint32_t mOpenedHttpChannel : 1;
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uint32_t mDataStarted : 1;
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uint32_t mIncrementedSessionCount : 1;
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uint32_t mDecrementedSessionCount : 1;
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int32_t mMaxMessageSize;
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nsresult mStopOnClose;
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uint16_t mServerCloseCode;
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nsCString mServerCloseReason;
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uint16_t mScriptCloseCode;
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nsCString mScriptCloseReason;
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// These are for the read buffers
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const static uint32_t kIncomingBufferInitialSize = 16 * 1024;
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// We're ok with keeping a buffer this size or smaller around for the life of
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// the websocket. If a particular message needs bigger than this we'll
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// increase the buffer temporarily, then drop back down to this size.
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const static uint32_t kIncomingBufferStableSize = 128 * 1024;
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uint8_t *mFramePtr;
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uint8_t *mBuffer;
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uint8_t mFragmentOpcode;
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uint32_t mFragmentAccumulator;
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uint32_t mBuffered;
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uint32_t mBufferSize;
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nsCOMPtr<nsIStreamListener> mInflateReader;
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nsCOMPtr<nsIStringInputStream> mInflateStream;
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// These are for the send buffers
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const static int32_t kCopyBreak = 1000;
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OutboundMessage *mCurrentOut;
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uint32_t mCurrentOutSent;
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nsDeque mOutgoingMessages;
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nsDeque mOutgoingPingMessages;
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nsDeque mOutgoingPongMessages;
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uint32_t mHdrOutToSend;
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uint8_t *mHdrOut;
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uint8_t mOutHeader[kCopyBreak + 16];
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nsWSCompression *mCompressor;
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uint32_t mDynamicOutputSize;
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uint8_t *mDynamicOutput;
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};
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class WebSocketSSLChannel : public WebSocketChannel
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{
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public:
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WebSocketSSLChannel() { BaseWebSocketChannel::mEncrypted = true; }
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protected:
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virtual ~WebSocketSSLChannel() {}
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};
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}} // namespace mozilla::net
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#endif // mozilla_net_WebSocketChannel_h
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