mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-06 17:16:12 +00:00
3237 lines
96 KiB
C++
3237 lines
96 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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#include "WebSocketLog.h"
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#include "WebSocketChannel.h"
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#include "nsISocketTransportService.h"
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#include "nsIURI.h"
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#include "nsIChannel.h"
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#include "nsICryptoHash.h"
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#include "nsIRunnable.h"
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#include "nsIPrefBranch.h"
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#include "nsIPrefService.h"
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#include "nsICancelable.h"
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#include "nsIDNSRecord.h"
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#include "nsIDNSService.h"
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#include "nsIStreamConverterService.h"
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#include "nsIIOService2.h"
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#include "nsIProtocolProxyService.h"
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#include "nsIProxyInfo.h"
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#include "nsIProxiedChannel.h"
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#include "nsAutoPtr.h"
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#include "nsStandardURL.h"
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#include "nsNetCID.h"
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#include "nsServiceManagerUtils.h"
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#include "nsXPIDLString.h"
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#include "nsCRT.h"
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#include "nsThreadUtils.h"
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#include "nsError.h"
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#include "nsStringStream.h"
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#include "nsAlgorithm.h"
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#include "nsProxyRelease.h"
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#include "nsNetUtil.h"
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#include "mozilla/Attributes.h"
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#include "TimeStamp.h"
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#include "mozilla/Telemetry.h"
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#include "plbase64.h"
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#include "prmem.h"
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#include "prnetdb.h"
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#include "prbit.h"
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#include "zlib.h"
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#include <algorithm>
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// rather than slurp up all of nsIWebSocket.idl, which lives outside necko, just
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// dupe one constant we need from it
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#define CLOSE_GOING_AWAY 1001
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extern PRThread *gSocketThread;
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using namespace mozilla;
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namespace mozilla {
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namespace net {
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NS_IMPL_THREADSAFE_ISUPPORTS11(WebSocketChannel,
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nsIWebSocketChannel,
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nsIHttpUpgradeListener,
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nsIRequestObserver,
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nsIStreamListener,
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nsIProtocolHandler,
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nsIInputStreamCallback,
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nsIOutputStreamCallback,
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nsITimerCallback,
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nsIDNSListener,
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nsIInterfaceRequestor,
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nsIChannelEventSink)
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// We implement RFC 6455, which uses Sec-WebSocket-Version: 13 on the wire.
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#define SEC_WEBSOCKET_VERSION "13"
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/*
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* About SSL unsigned certificates
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*
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* wss will not work to a host using an unsigned certificate unless there
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* is already an exception (i.e. it cannot popup a dialog asking for
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* a security exception). This is similar to how an inlined img will
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* fail without a dialog if fails for the same reason. This should not
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* be a problem in practice as it is expected the websocket javascript
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* is served from the same host as the websocket server (or of course,
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* a valid cert could just be provided).
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*
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*/
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// some helper classes
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//-----------------------------------------------------------------------------
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// FailDelayManager
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//
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// Stores entries (searchable by {host, port}) of connections that have recently
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// failed, so we can do delay of reconnects per RFC 6455 Section 7.2.3
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//-----------------------------------------------------------------------------
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// Initial reconnect delay is randomly chosen between 200-400 ms.
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// This is a gentler backoff than the 0-5 seconds the spec offhandedly suggests.
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const uint32_t kWSReconnectInitialBaseDelay = 200;
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const uint32_t kWSReconnectInitialRandomDelay = 200;
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// Base lifetime (in ms) of a FailDelay: kept longer if more failures occur
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const uint32_t kWSReconnectBaseLifeTime = 60 * 1000;
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// Maximum reconnect delay (in ms)
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const uint32_t kWSReconnectMaxDelay = 60 * 1000;
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// hold record of failed connections, and calculates needed delay for reconnects
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// to same host/port.
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class FailDelay
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{
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public:
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FailDelay(nsCString address, int32_t port)
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: mAddress(address), mPort(port)
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{
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mLastFailure = TimeStamp::Now();
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mNextDelay = kWSReconnectInitialBaseDelay +
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(rand() % kWSReconnectInitialRandomDelay);
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}
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// Called to update settings when connection fails again.
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void FailedAgain()
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{
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mLastFailure = TimeStamp::Now();
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// We use a truncated exponential backoff as suggested by RFC 6455,
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// but multiply by 1.5 instead of 2 to be more gradual.
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mNextDelay = static_cast<uint32_t>(
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std::min<double>(kWSReconnectMaxDelay, mNextDelay * 1.5));
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LOG(("WebSocket: FailedAgain: host=%s, port=%d: incremented delay to %lu",
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mAddress.get(), mPort, mNextDelay));
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}
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// returns 0 if there is no need to delay (i.e. delay interval is over)
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uint32_t RemainingDelay(TimeStamp rightNow)
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{
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TimeDuration dur = rightNow - mLastFailure;
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uint32_t sinceFail = (uint32_t) dur.ToMilliseconds();
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if (sinceFail > mNextDelay)
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return 0;
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return mNextDelay - sinceFail;
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}
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bool IsExpired(TimeStamp rightNow)
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{
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return (mLastFailure +
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TimeDuration::FromMilliseconds(kWSReconnectBaseLifeTime + mNextDelay))
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<= rightNow;
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}
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nsCString mAddress; // IP address (or hostname if using proxy)
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int32_t mPort;
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private:
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TimeStamp mLastFailure; // Time of last failed attempt
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// mLastFailure + mNextDelay is the soonest we'll allow a reconnect
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uint32_t mNextDelay; // milliseconds
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};
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class FailDelayManager
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{
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public:
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FailDelayManager()
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{
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MOZ_COUNT_CTOR(FailDelayManager);
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mDelaysDisabled = false;
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nsCOMPtr<nsIPrefBranch> prefService =
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do_GetService(NS_PREFSERVICE_CONTRACTID);
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bool boolpref = true;
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nsresult rv;
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rv = prefService->GetBoolPref("network.websocket.delay-failed-reconnects",
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&boolpref);
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if (NS_SUCCEEDED(rv) && !boolpref) {
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mDelaysDisabled = true;
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}
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}
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~FailDelayManager()
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{
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MOZ_COUNT_DTOR(FailDelayManager);
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for (uint32_t i = 0; i < mEntries.Length(); i++) {
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delete mEntries[i];
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}
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}
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void Add(nsCString &address, int32_t port)
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{
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NS_ABORT_IF_FALSE(NS_IsMainThread(), "not main thread");
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if (mDelaysDisabled)
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return;
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FailDelay *record = new FailDelay(address, port);
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mEntries.AppendElement(record);
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}
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// Element returned may not be valid after next main thread event: don't keep
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// pointer to it around
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FailDelay* Lookup(nsCString &address, int32_t port,
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uint32_t *outIndex = nullptr)
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{
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NS_ABORT_IF_FALSE(NS_IsMainThread(), "not main thread");
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if (mDelaysDisabled)
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return nullptr;
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FailDelay *result = nullptr;
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TimeStamp rightNow = TimeStamp::Now();
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// We also remove expired entries during search: iterate from end to make
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// indexing simpler
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for (int32_t i = mEntries.Length() - 1; i >= 0; --i) {
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FailDelay *fail = mEntries[i];
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if (fail->mAddress.Equals(address) && fail->mPort == port) {
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if (outIndex)
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*outIndex = i;
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result = fail;
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// break here: removing more entries would mess up *outIndex.
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// Any remaining expired entries will be deleted next time Lookup
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// finds nothing, which is the most common case anyway.
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break;
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} else if (fail->IsExpired(rightNow)) {
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mEntries.RemoveElementAt(i);
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delete fail;
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}
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}
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return result;
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}
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// returns true if channel connects immediately, or false if it's delayed
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void DelayOrBegin(WebSocketChannel *ws)
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{
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if (!mDelaysDisabled) {
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uint32_t failIndex = 0;
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FailDelay *fail = Lookup(ws->mAddress, ws->mPort, &failIndex);
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if (fail) {
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TimeStamp rightNow = TimeStamp::Now();
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uint32_t remainingDelay = fail->RemainingDelay(rightNow);
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if (remainingDelay) {
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// reconnecting within delay interval: delay by remaining time
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nsresult rv;
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ws->mReconnectDelayTimer =
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do_CreateInstance("@mozilla.org/timer;1", &rv);
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if (NS_SUCCEEDED(rv)) {
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rv = ws->mReconnectDelayTimer->InitWithCallback(
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ws, remainingDelay, nsITimer::TYPE_ONE_SHOT);
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if (NS_SUCCEEDED(rv)) {
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LOG(("WebSocket: delaying websocket [this=%p] by %lu ms",
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ws, (unsigned long)remainingDelay));
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ws->mConnecting = CONNECTING_DELAYED;
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return;
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}
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}
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// if timer fails (which is very unlikely), drop down to BeginOpen call
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} else if (fail->IsExpired(rightNow)) {
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mEntries.RemoveElementAt(failIndex);
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delete fail;
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}
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}
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}
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// Delays disabled, or no previous failure, or we're reconnecting after scheduled
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// delay interval has passed: connect.
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ws->BeginOpen();
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}
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// Remove() also deletes all expired entries as it iterates: better for
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// battery life than using a periodic timer.
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void Remove(nsCString &address, int32_t port)
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{
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NS_ABORT_IF_FALSE(NS_IsMainThread(), "not main thread");
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TimeStamp rightNow = TimeStamp::Now();
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// iterate from end, to make deletion indexing easier
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for (int32_t i = mEntries.Length() - 1; i >= 0; --i) {
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FailDelay *entry = mEntries[i];
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if ((entry->mAddress.Equals(address) && entry->mPort == port) ||
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entry->IsExpired(rightNow)) {
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mEntries.RemoveElementAt(i);
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delete entry;
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}
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}
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}
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private:
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nsTArray<FailDelay *> mEntries;
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bool mDelaysDisabled;
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};
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//-----------------------------------------------------------------------------
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// nsWSAdmissionManager
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//
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// 1) Ensures that only one websocket at a time is CONNECTING to a given IP
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// address (or hostname, if using proxy), per RFC 6455 Section 4.1.
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// 2) Delays reconnects to IP/host after connection failure, per Section 7.2.3
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//-----------------------------------------------------------------------------
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class nsWSAdmissionManager
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{
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public:
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nsWSAdmissionManager() : mSessionCount(0)
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{
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MOZ_COUNT_CTOR(nsWSAdmissionManager);
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}
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class nsOpenConn
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{
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public:
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nsOpenConn(nsCString &addr, WebSocketChannel *channel)
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: mAddress(addr), mChannel(channel) { MOZ_COUNT_CTOR(nsOpenConn); }
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~nsOpenConn() { MOZ_COUNT_DTOR(nsOpenConn); }
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nsCString mAddress;
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WebSocketChannel *mChannel;
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};
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~nsWSAdmissionManager()
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{
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MOZ_COUNT_DTOR(nsWSAdmissionManager);
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for (uint32_t i = 0; i < mQueue.Length(); i++)
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delete mQueue[i];
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}
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// Determine if we will open connection immediately (returns true), or
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// delay/queue the connection (returns false)
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void ConditionallyConnect(WebSocketChannel *ws)
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{
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NS_ABORT_IF_FALSE(NS_IsMainThread(), "not main thread");
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NS_ABORT_IF_FALSE(ws->mConnecting == NOT_CONNECTING, "opening state");
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// If there is already another WS channel connecting to this IP address,
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// defer BeginOpen and mark as waiting in queue.
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bool found = (IndexOf(ws->mAddress) >= 0);
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// Always add ourselves to queue, even if we'll connect immediately
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nsOpenConn *newdata = new nsOpenConn(ws->mAddress, ws);
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mQueue.AppendElement(newdata);
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if (found) {
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ws->mConnecting = CONNECTING_QUEUED;
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} else {
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mFailures.DelayOrBegin(ws);
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}
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}
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void OnConnected(WebSocketChannel *aChannel)
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{
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NS_ABORT_IF_FALSE(NS_IsMainThread(), "not main thread");
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NS_ABORT_IF_FALSE(aChannel->mConnecting == CONNECTING_IN_PROGRESS,
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"Channel completed connect, but not connecting?");
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aChannel->mConnecting = NOT_CONNECTING;
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// Remove from queue
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RemoveFromQueue(aChannel);
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// Connection succeeded, so stop keeping track of any previous failures
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mFailures.Remove(aChannel->mAddress, aChannel->mPort);
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// Check for queued connections to same host.
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// Note: still need to check for failures, since next websocket with same
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// host may have different port
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ConnectNext(aChannel->mAddress);
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}
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// Called every time a websocket channel ends its session (including going away
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// w/o ever successfully creating a connection)
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void OnStopSession(WebSocketChannel *aChannel, nsresult aReason)
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{
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NS_ABORT_IF_FALSE(NS_IsMainThread(), "not main thread");
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if (NS_FAILED(aReason)) {
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// Have we seen this failure before?
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FailDelay *knownFailure = mFailures.Lookup(aChannel->mAddress,
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aChannel->mPort);
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if (knownFailure) {
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// repeated failure to connect: increase delay for next connection
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knownFailure->FailedAgain();
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} else {
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// new connection failure: record it.
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LOG(("WebSocket: connection to %s, %d failed: [this=%p]",
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aChannel->mAddress.get(), (int)aChannel->mPort, aChannel));
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mFailures.Add(aChannel->mAddress, aChannel->mPort);
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}
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}
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if (aChannel->mConnecting) {
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// Only way a connecting channel may get here w/o failing is if it was
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// closed with GOING_AWAY (1001) because of navigation, tab close, etc.
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NS_ABORT_IF_FALSE(NS_FAILED(aReason) ||
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aChannel->mScriptCloseCode == CLOSE_GOING_AWAY,
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"websocket closed while connecting w/o failing?");
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RemoveFromQueue(aChannel);
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bool wasNotQueued = (aChannel->mConnecting != CONNECTING_QUEUED);
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aChannel->mConnecting = NOT_CONNECTING;
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if (wasNotQueued) {
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ConnectNext(aChannel->mAddress);
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}
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}
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}
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void ConnectNext(nsCString &hostName)
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{
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int32_t index = IndexOf(hostName);
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if (index >= 0) {
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WebSocketChannel *chan = mQueue[index]->mChannel;
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NS_ABORT_IF_FALSE(chan->mConnecting == CONNECTING_QUEUED,
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"transaction not queued but in queue");
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LOG(("WebSocket: ConnectNext: found channel [this=%p] in queue", chan));
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mFailures.DelayOrBegin(chan);
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}
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}
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void IncrementSessionCount()
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{
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PR_ATOMIC_INCREMENT(&mSessionCount);
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}
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void DecrementSessionCount()
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{
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PR_ATOMIC_DECREMENT(&mSessionCount);
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}
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int32_t SessionCount()
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{
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return mSessionCount;
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}
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private:
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void RemoveFromQueue(WebSocketChannel *aChannel)
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{
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int32_t index = IndexOf(aChannel);
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NS_ABORT_IF_FALSE(index >= 0, "connection to remove not in queue");
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if (index >= 0) {
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nsOpenConn *olddata = mQueue[index];
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mQueue.RemoveElementAt(index);
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delete olddata;
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}
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}
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int32_t IndexOf(nsCString &aStr)
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{
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for (uint32_t i = 0; i < mQueue.Length(); i++)
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if (aStr == (mQueue[i])->mAddress)
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return i;
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return -1;
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}
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int32_t IndexOf(WebSocketChannel *aChannel)
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{
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for (uint32_t i = 0; i < mQueue.Length(); i++)
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if (aChannel == (mQueue[i])->mChannel)
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return i;
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return -1;
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}
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// SessionCount might be decremented from the main or the socket
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// thread, so manage it with atomic counters
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int32_t mSessionCount;
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// Queue for websockets that have not completed connecting yet.
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// The first nsOpenConn with a given address will be either be
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// CONNECTING_IN_PROGRESS or CONNECTING_DELAYED. Later ones with the same
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// hostname must be CONNECTING_QUEUED.
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//
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// We could hash hostnames instead of using a single big vector here, but the
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// dataset is expected to be small.
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nsTArray<nsOpenConn *> mQueue;
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FailDelayManager mFailures;
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};
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static nsWSAdmissionManager *sWebSocketAdmissions = nullptr;
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//-----------------------------------------------------------------------------
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|
// CallOnMessageAvailable
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|
//-----------------------------------------------------------------------------
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|
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class CallOnMessageAvailable MOZ_FINAL : public nsIRunnable
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{
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|
public:
|
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NS_DECL_ISUPPORTS
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|
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CallOnMessageAvailable(WebSocketChannel *aChannel,
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nsCString &aData,
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int32_t aLen)
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|
: mChannel(aChannel),
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mData(aData),
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|
mLen(aLen) {}
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|
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NS_IMETHOD Run()
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|
{
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if (mLen < 0)
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mChannel->mListener->OnMessageAvailable(mChannel->mContext, mData);
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else
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mChannel->mListener->OnBinaryMessageAvailable(mChannel->mContext, mData);
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return NS_OK;
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}
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private:
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~CallOnMessageAvailable() {}
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|
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nsRefPtr<WebSocketChannel> mChannel;
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nsCString mData;
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int32_t mLen;
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};
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NS_IMPL_THREADSAFE_ISUPPORTS1(CallOnMessageAvailable, nsIRunnable)
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|
|
|
//-----------------------------------------------------------------------------
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|
// CallOnStop
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|
//-----------------------------------------------------------------------------
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|
|
class CallOnStop MOZ_FINAL : public nsIRunnable
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|
{
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|
public:
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NS_DECL_ISUPPORTS
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|
|
|
CallOnStop(WebSocketChannel *aChannel,
|
|
nsresult aReason)
|
|
: mChannel(aChannel),
|
|
mReason(aReason) {}
|
|
|
|
NS_IMETHOD Run()
|
|
{
|
|
NS_ABORT_IF_FALSE(NS_IsMainThread(), "not main thread");
|
|
|
|
sWebSocketAdmissions->OnStopSession(mChannel, mReason);
|
|
|
|
if (mChannel->mListener) {
|
|
mChannel->mListener->OnStop(mChannel->mContext, mReason);
|
|
mChannel->mListener = nullptr;
|
|
mChannel->mContext = nullptr;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
private:
|
|
~CallOnStop() {}
|
|
|
|
nsRefPtr<WebSocketChannel> mChannel;
|
|
nsresult mReason;
|
|
};
|
|
NS_IMPL_THREADSAFE_ISUPPORTS1(CallOnStop, nsIRunnable)
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// CallOnServerClose
|
|
//-----------------------------------------------------------------------------
|
|
|
|
class CallOnServerClose MOZ_FINAL : public nsIRunnable
|
|
{
|
|
public:
|
|
NS_DECL_ISUPPORTS
|
|
|
|
CallOnServerClose(WebSocketChannel *aChannel,
|
|
uint16_t aCode,
|
|
nsCString &aReason)
|
|
: mChannel(aChannel),
|
|
mCode(aCode),
|
|
mReason(aReason) {}
|
|
|
|
NS_IMETHOD Run()
|
|
{
|
|
mChannel->mListener->OnServerClose(mChannel->mContext, mCode, mReason);
|
|
return NS_OK;
|
|
}
|
|
|
|
private:
|
|
~CallOnServerClose() {}
|
|
|
|
nsRefPtr<WebSocketChannel> mChannel;
|
|
uint16_t mCode;
|
|
nsCString mReason;
|
|
};
|
|
NS_IMPL_THREADSAFE_ISUPPORTS1(CallOnServerClose, nsIRunnable)
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// CallAcknowledge
|
|
//-----------------------------------------------------------------------------
|
|
|
|
class CallAcknowledge MOZ_FINAL : public nsIRunnable
|
|
{
|
|
public:
|
|
NS_DECL_ISUPPORTS
|
|
|
|
CallAcknowledge(WebSocketChannel *aChannel,
|
|
uint32_t aSize)
|
|
: mChannel(aChannel),
|
|
mSize(aSize) {}
|
|
|
|
NS_IMETHOD Run()
|
|
{
|
|
LOG(("WebSocketChannel::CallAcknowledge: Size %u\n", mSize));
|
|
mChannel->mListener->OnAcknowledge(mChannel->mContext, mSize);
|
|
return NS_OK;
|
|
}
|
|
|
|
private:
|
|
~CallAcknowledge() {}
|
|
|
|
nsRefPtr<WebSocketChannel> mChannel;
|
|
uint32_t mSize;
|
|
};
|
|
NS_IMPL_THREADSAFE_ISUPPORTS1(CallAcknowledge, nsIRunnable)
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// CallOnTransportAvailable
|
|
//-----------------------------------------------------------------------------
|
|
|
|
class CallOnTransportAvailable MOZ_FINAL : public nsIRunnable
|
|
{
|
|
public:
|
|
NS_DECL_ISUPPORTS
|
|
|
|
CallOnTransportAvailable(WebSocketChannel *aChannel,
|
|
nsISocketTransport *aTransport,
|
|
nsIAsyncInputStream *aSocketIn,
|
|
nsIAsyncOutputStream *aSocketOut)
|
|
: mChannel(aChannel),
|
|
mTransport(aTransport),
|
|
mSocketIn(aSocketIn),
|
|
mSocketOut(aSocketOut) {}
|
|
|
|
NS_IMETHOD Run()
|
|
{
|
|
LOG(("WebSocketChannel::CallOnTransportAvailable %p\n", this));
|
|
return mChannel->OnTransportAvailable(mTransport, mSocketIn, mSocketOut);
|
|
}
|
|
|
|
private:
|
|
~CallOnTransportAvailable() {}
|
|
|
|
nsRefPtr<WebSocketChannel> mChannel;
|
|
nsCOMPtr<nsISocketTransport> mTransport;
|
|
nsCOMPtr<nsIAsyncInputStream> mSocketIn;
|
|
nsCOMPtr<nsIAsyncOutputStream> mSocketOut;
|
|
};
|
|
NS_IMPL_THREADSAFE_ISUPPORTS1(CallOnTransportAvailable, nsIRunnable)
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// OutboundMessage
|
|
//-----------------------------------------------------------------------------
|
|
|
|
enum WsMsgType {
|
|
kMsgTypeString = 0,
|
|
kMsgTypeBinaryString,
|
|
kMsgTypeStream,
|
|
kMsgTypePing,
|
|
kMsgTypePong,
|
|
kMsgTypeFin
|
|
};
|
|
|
|
static const char* msgNames[] = {
|
|
"text",
|
|
"binaryString",
|
|
"binaryStream",
|
|
"ping",
|
|
"pong",
|
|
"close"
|
|
};
|
|
|
|
class OutboundMessage
|
|
{
|
|
public:
|
|
OutboundMessage(WsMsgType type, nsCString *str)
|
|
: mMsgType(type)
|
|
{
|
|
MOZ_COUNT_CTOR(OutboundMessage);
|
|
mMsg.pString = str;
|
|
mLength = str ? str->Length() : 0;
|
|
}
|
|
|
|
OutboundMessage(nsIInputStream *stream, uint32_t length)
|
|
: mMsgType(kMsgTypeStream), mLength(length)
|
|
{
|
|
MOZ_COUNT_CTOR(OutboundMessage);
|
|
mMsg.pStream = stream;
|
|
mMsg.pStream->AddRef();
|
|
}
|
|
|
|
~OutboundMessage() {
|
|
MOZ_COUNT_DTOR(OutboundMessage);
|
|
switch (mMsgType) {
|
|
case kMsgTypeString:
|
|
case kMsgTypeBinaryString:
|
|
case kMsgTypePing:
|
|
case kMsgTypePong:
|
|
delete mMsg.pString;
|
|
break;
|
|
case kMsgTypeStream:
|
|
// for now this only gets hit if msg deleted w/o being sent
|
|
if (mMsg.pStream) {
|
|
mMsg.pStream->Close();
|
|
mMsg.pStream->Release();
|
|
}
|
|
break;
|
|
case kMsgTypeFin:
|
|
break; // do-nothing: avoid compiler warning
|
|
}
|
|
}
|
|
|
|
WsMsgType GetMsgType() const { return mMsgType; }
|
|
int32_t Length() const { return mLength; }
|
|
|
|
uint8_t* BeginWriting() {
|
|
NS_ABORT_IF_FALSE(mMsgType != kMsgTypeStream,
|
|
"Stream should have been converted to string by now");
|
|
return (uint8_t *)(mMsg.pString ? mMsg.pString->BeginWriting() : nullptr);
|
|
}
|
|
|
|
uint8_t* BeginReading() {
|
|
NS_ABORT_IF_FALSE(mMsgType != kMsgTypeStream,
|
|
"Stream should have been converted to string by now");
|
|
return (uint8_t *)(mMsg.pString ? mMsg.pString->BeginReading() : nullptr);
|
|
}
|
|
|
|
nsresult ConvertStreamToString()
|
|
{
|
|
NS_ABORT_IF_FALSE(mMsgType == kMsgTypeStream, "Not a stream!");
|
|
|
|
#ifdef DEBUG
|
|
// Make sure we got correct length from Blob
|
|
uint64_t bytes;
|
|
mMsg.pStream->Available(&bytes);
|
|
NS_ASSERTION(bytes == mLength, "Stream length != blob length!");
|
|
#endif
|
|
|
|
nsAutoPtr<nsCString> temp(new nsCString());
|
|
nsresult rv = NS_ReadInputStreamToString(mMsg.pStream, *temp, mLength);
|
|
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
mMsg.pStream->Close();
|
|
mMsg.pStream->Release();
|
|
mMsg.pString = temp.forget();
|
|
mMsgType = kMsgTypeBinaryString;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
private:
|
|
union {
|
|
nsCString *pString;
|
|
nsIInputStream *pStream;
|
|
} mMsg;
|
|
WsMsgType mMsgType;
|
|
uint32_t mLength;
|
|
};
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// OutboundEnqueuer
|
|
//-----------------------------------------------------------------------------
|
|
|
|
class OutboundEnqueuer MOZ_FINAL : public nsIRunnable
|
|
{
|
|
public:
|
|
NS_DECL_ISUPPORTS
|
|
|
|
OutboundEnqueuer(WebSocketChannel *aChannel, OutboundMessage *aMsg)
|
|
: mChannel(aChannel), mMessage(aMsg) {}
|
|
|
|
NS_IMETHOD Run()
|
|
{
|
|
mChannel->EnqueueOutgoingMessage(mChannel->mOutgoingMessages, mMessage);
|
|
return NS_OK;
|
|
}
|
|
|
|
private:
|
|
~OutboundEnqueuer() {}
|
|
|
|
nsRefPtr<WebSocketChannel> mChannel;
|
|
OutboundMessage *mMessage;
|
|
};
|
|
NS_IMPL_THREADSAFE_ISUPPORTS1(OutboundEnqueuer, nsIRunnable)
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// nsWSCompression
|
|
//
|
|
// similar to nsDeflateConverter except for the mandatory FLUSH calls
|
|
// required by websocket and the absence of the deflate termination
|
|
// block which is appropriate because it would create data bytes after
|
|
// sending the websockets CLOSE message.
|
|
//-----------------------------------------------------------------------------
|
|
|
|
class nsWSCompression
|
|
{
|
|
public:
|
|
nsWSCompression(nsIStreamListener *aListener,
|
|
nsISupports *aContext)
|
|
: mActive(false),
|
|
mContext(aContext),
|
|
mListener(aListener)
|
|
{
|
|
MOZ_COUNT_CTOR(nsWSCompression);
|
|
|
|
mZlib.zalloc = allocator;
|
|
mZlib.zfree = destructor;
|
|
mZlib.opaque = Z_NULL;
|
|
|
|
// Initialize the compressor - these are all the normal zlib
|
|
// defaults except window size is set to -15 instead of +15.
|
|
// This is the zlib way of specifying raw RFC 1951 output instead
|
|
// of the zlib rfc 1950 format which has a 2 byte header and
|
|
// adler checksum as a trailer
|
|
|
|
nsresult rv;
|
|
mStream = do_CreateInstance(NS_STRINGINPUTSTREAM_CONTRACTID, &rv);
|
|
if (NS_SUCCEEDED(rv) && aContext && aListener &&
|
|
deflateInit2(&mZlib, Z_DEFAULT_COMPRESSION, Z_DEFLATED, -15, 8,
|
|
Z_DEFAULT_STRATEGY) == Z_OK) {
|
|
mActive = true;
|
|
}
|
|
}
|
|
|
|
~nsWSCompression()
|
|
{
|
|
MOZ_COUNT_DTOR(nsWSCompression);
|
|
|
|
if (mActive)
|
|
deflateEnd(&mZlib);
|
|
}
|
|
|
|
bool Active()
|
|
{
|
|
return mActive;
|
|
}
|
|
|
|
nsresult Deflate(uint8_t *buf1, uint32_t buf1Len,
|
|
uint8_t *buf2, uint32_t buf2Len)
|
|
{
|
|
NS_ABORT_IF_FALSE(PR_GetCurrentThread() == gSocketThread,
|
|
"not socket thread");
|
|
NS_ABORT_IF_FALSE(mActive, "not active");
|
|
|
|
mZlib.avail_out = kBufferLen;
|
|
mZlib.next_out = mBuffer;
|
|
mZlib.avail_in = buf1Len;
|
|
mZlib.next_in = buf1;
|
|
|
|
nsresult rv;
|
|
|
|
while (mZlib.avail_in > 0) {
|
|
deflate(&mZlib, (buf2Len > 0) ? Z_NO_FLUSH : Z_SYNC_FLUSH);
|
|
rv = PushData();
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
mZlib.avail_out = kBufferLen;
|
|
mZlib.next_out = mBuffer;
|
|
}
|
|
|
|
mZlib.avail_in = buf2Len;
|
|
mZlib.next_in = buf2;
|
|
|
|
while (mZlib.avail_in > 0) {
|
|
deflate(&mZlib, Z_SYNC_FLUSH);
|
|
rv = PushData();
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
mZlib.avail_out = kBufferLen;
|
|
mZlib.next_out = mBuffer;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
private:
|
|
|
|
// use zlib data types
|
|
static void *allocator(void *opaque, uInt items, uInt size)
|
|
{
|
|
return moz_xmalloc(items * size);
|
|
}
|
|
|
|
static void destructor(void *opaque, void *addr)
|
|
{
|
|
moz_free(addr);
|
|
}
|
|
|
|
nsresult PushData()
|
|
{
|
|
uint32_t bytesToWrite = kBufferLen - mZlib.avail_out;
|
|
if (bytesToWrite > 0) {
|
|
mStream->ShareData(reinterpret_cast<char *>(mBuffer), bytesToWrite);
|
|
nsresult rv =
|
|
mListener->OnDataAvailable(nullptr, mContext, mStream, 0, bytesToWrite);
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
bool mActive;
|
|
z_stream mZlib;
|
|
nsCOMPtr<nsIStringInputStream> mStream;
|
|
|
|
nsISupports *mContext; /* weak ref */
|
|
nsIStreamListener *mListener; /* weak ref */
|
|
|
|
const static int32_t kBufferLen = 4096;
|
|
uint8_t mBuffer[kBufferLen];
|
|
};
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// WebSocketChannel
|
|
//-----------------------------------------------------------------------------
|
|
|
|
uint32_t WebSocketChannel::sSerialSeed = 0;
|
|
|
|
WebSocketChannel::WebSocketChannel() :
|
|
mPort(0),
|
|
mCloseTimeout(20000),
|
|
mOpenTimeout(20000),
|
|
mConnecting(NOT_CONNECTING),
|
|
mMaxConcurrentConnections(200),
|
|
mGotUpgradeOK(0),
|
|
mRecvdHttpUpgradeTransport(0),
|
|
mRequestedClose(0),
|
|
mClientClosed(0),
|
|
mServerClosed(0),
|
|
mStopped(0),
|
|
mCalledOnStop(0),
|
|
mPingOutstanding(0),
|
|
mAllowCompression(1),
|
|
mAutoFollowRedirects(0),
|
|
mReleaseOnTransmit(0),
|
|
mTCPClosed(0),
|
|
mOpenedHttpChannel(0),
|
|
mDataStarted(0),
|
|
mIncrementedSessionCount(0),
|
|
mDecrementedSessionCount(0),
|
|
mMaxMessageSize(INT32_MAX),
|
|
mStopOnClose(NS_OK),
|
|
mServerCloseCode(CLOSE_ABNORMAL),
|
|
mScriptCloseCode(0),
|
|
mFragmentOpcode(kContinuation),
|
|
mFragmentAccumulator(0),
|
|
mBuffered(0),
|
|
mBufferSize(kIncomingBufferInitialSize),
|
|
mCurrentOut(nullptr),
|
|
mCurrentOutSent(0),
|
|
mCompressor(nullptr),
|
|
mDynamicOutputSize(0),
|
|
mDynamicOutput(nullptr),
|
|
mConnectionLogService(nullptr)
|
|
{
|
|
NS_ABORT_IF_FALSE(NS_IsMainThread(), "not main thread");
|
|
|
|
LOG(("WebSocketChannel::WebSocketChannel() %p\n", this));
|
|
|
|
if (!sWebSocketAdmissions)
|
|
sWebSocketAdmissions = new nsWSAdmissionManager();
|
|
|
|
mFramePtr = mBuffer = static_cast<uint8_t *>(moz_xmalloc(mBufferSize));
|
|
|
|
nsresult rv;
|
|
mConnectionLogService = do_GetService("@mozilla.org/network/dashboard;1",&rv);
|
|
if (NS_FAILED(rv))
|
|
LOG(("Failed to initiate dashboard service."));
|
|
|
|
mSerial = sSerialSeed++;
|
|
}
|
|
|
|
WebSocketChannel::~WebSocketChannel()
|
|
{
|
|
LOG(("WebSocketChannel::~WebSocketChannel() %p\n", this));
|
|
|
|
if (mWasOpened) {
|
|
MOZ_ASSERT(mCalledOnStop, "WebSocket was opened but OnStop was not called");
|
|
MOZ_ASSERT(mStopped, "WebSocket was opened but never stopped");
|
|
}
|
|
MOZ_ASSERT(!mDNSRequest, "DNS Request still alive at destruction");
|
|
MOZ_ASSERT(!mConnecting, "Should not be connecting in destructor");
|
|
|
|
moz_free(mBuffer);
|
|
moz_free(mDynamicOutput);
|
|
delete mCompressor;
|
|
delete mCurrentOut;
|
|
|
|
while ((mCurrentOut = (OutboundMessage *) mOutgoingPingMessages.PopFront()))
|
|
delete mCurrentOut;
|
|
while ((mCurrentOut = (OutboundMessage *) mOutgoingPongMessages.PopFront()))
|
|
delete mCurrentOut;
|
|
while ((mCurrentOut = (OutboundMessage *) mOutgoingMessages.PopFront()))
|
|
delete mCurrentOut;
|
|
|
|
nsCOMPtr<nsIThread> mainThread;
|
|
nsIURI *forgettable;
|
|
NS_GetMainThread(getter_AddRefs(mainThread));
|
|
|
|
if (mURI) {
|
|
mURI.forget(&forgettable);
|
|
NS_ProxyRelease(mainThread, forgettable, false);
|
|
}
|
|
|
|
if (mOriginalURI) {
|
|
mOriginalURI.forget(&forgettable);
|
|
NS_ProxyRelease(mainThread, forgettable, false);
|
|
}
|
|
|
|
if (mListener) {
|
|
nsIWebSocketListener *forgettableListener;
|
|
mListener.forget(&forgettableListener);
|
|
NS_ProxyRelease(mainThread, forgettableListener, false);
|
|
}
|
|
|
|
if (mContext) {
|
|
nsISupports *forgettableContext;
|
|
mContext.forget(&forgettableContext);
|
|
NS_ProxyRelease(mainThread, forgettableContext, false);
|
|
}
|
|
|
|
if (mLoadGroup) {
|
|
nsILoadGroup *forgettableGroup;
|
|
mLoadGroup.forget(&forgettableGroup);
|
|
NS_ProxyRelease(mainThread, forgettableGroup, false);
|
|
}
|
|
}
|
|
|
|
void
|
|
WebSocketChannel::Shutdown()
|
|
{
|
|
delete sWebSocketAdmissions;
|
|
sWebSocketAdmissions = nullptr;
|
|
}
|
|
|
|
void
|
|
WebSocketChannel::BeginOpen()
|
|
{
|
|
LOG(("WebSocketChannel::BeginOpen() %p\n", this));
|
|
NS_ABORT_IF_FALSE(NS_IsMainThread(), "not main thread");
|
|
|
|
nsresult rv;
|
|
|
|
// Important that we set CONNECTING_IN_PROGRESS before any call to
|
|
// AbortSession here: ensures that any remaining queued connection(s) are
|
|
// scheduled in OnStopSession
|
|
mConnecting = CONNECTING_IN_PROGRESS;
|
|
|
|
if (mRedirectCallback) {
|
|
LOG(("WebSocketChannel::BeginOpen: Resuming Redirect\n"));
|
|
rv = mRedirectCallback->OnRedirectVerifyCallback(NS_OK);
|
|
mRedirectCallback = nullptr;
|
|
return;
|
|
}
|
|
|
|
nsCOMPtr<nsIChannel> localChannel = do_QueryInterface(mChannel, &rv);
|
|
if (NS_FAILED(rv)) {
|
|
LOG(("WebSocketChannel::BeginOpen: cannot async open\n"));
|
|
AbortSession(NS_ERROR_UNEXPECTED);
|
|
return;
|
|
}
|
|
|
|
rv = localChannel->AsyncOpen(this, mHttpChannel);
|
|
if (NS_FAILED(rv)) {
|
|
LOG(("WebSocketChannel::BeginOpen: cannot async open\n"));
|
|
AbortSession(NS_ERROR_CONNECTION_REFUSED);
|
|
return;
|
|
}
|
|
mOpenedHttpChannel = 1;
|
|
|
|
mOpenTimer = do_CreateInstance("@mozilla.org/timer;1", &rv);
|
|
if (NS_FAILED(rv)) {
|
|
LOG(("WebSocketChannel::BeginOpen: cannot create open timer\n"));
|
|
AbortSession(NS_ERROR_UNEXPECTED);
|
|
return;
|
|
}
|
|
|
|
rv = mOpenTimer->InitWithCallback(this, mOpenTimeout,
|
|
nsITimer::TYPE_ONE_SHOT);
|
|
if (NS_FAILED(rv)) {
|
|
LOG(("WebSocketChannel::BeginOpen: cannot initialize open timer\n"));
|
|
AbortSession(NS_ERROR_UNEXPECTED);
|
|
return;
|
|
}
|
|
}
|
|
|
|
bool
|
|
WebSocketChannel::IsPersistentFramePtr()
|
|
{
|
|
return (mFramePtr >= mBuffer && mFramePtr < mBuffer + mBufferSize);
|
|
}
|
|
|
|
// Extends the internal buffer by count and returns the total
|
|
// amount of data available for read
|
|
//
|
|
// Accumulated fragment size is passed in instead of using the member
|
|
// variable beacuse when transitioning from the stack to the persistent
|
|
// read buffer we want to explicitly include them in the buffer instead
|
|
// of as already existing data.
|
|
bool
|
|
WebSocketChannel::UpdateReadBuffer(uint8_t *buffer, uint32_t count,
|
|
uint32_t accumulatedFragments,
|
|
uint32_t *available)
|
|
{
|
|
LOG(("WebSocketChannel::UpdateReadBuffer() %p [%p %u]\n",
|
|
this, buffer, count));
|
|
|
|
if (!mBuffered)
|
|
mFramePtr = mBuffer;
|
|
|
|
NS_ABORT_IF_FALSE(IsPersistentFramePtr(), "update read buffer bad mFramePtr");
|
|
NS_ABORT_IF_FALSE(mFramePtr - accumulatedFragments >= mBuffer,
|
|
"reserved FramePtr bad");
|
|
|
|
if (mBuffered + count <= mBufferSize) {
|
|
// append to existing buffer
|
|
LOG(("WebSocketChannel: update read buffer absorbed %u\n", count));
|
|
} else if (mBuffered + count -
|
|
(mFramePtr - accumulatedFragments - mBuffer) <= mBufferSize) {
|
|
// make room in existing buffer by shifting unused data to start
|
|
mBuffered -= (mFramePtr - mBuffer - accumulatedFragments);
|
|
LOG(("WebSocketChannel: update read buffer shifted %u\n", mBuffered));
|
|
::memmove(mBuffer, mFramePtr - accumulatedFragments, mBuffered);
|
|
mFramePtr = mBuffer + accumulatedFragments;
|
|
} else {
|
|
// existing buffer is not sufficient, extend it
|
|
mBufferSize += count + 8192 + mBufferSize/3;
|
|
LOG(("WebSocketChannel: update read buffer extended to %u\n", mBufferSize));
|
|
uint8_t *old = mBuffer;
|
|
mBuffer = (uint8_t *)moz_realloc(mBuffer, mBufferSize);
|
|
if (!mBuffer) {
|
|
mBuffer = old;
|
|
return false;
|
|
}
|
|
mFramePtr = mBuffer + (mFramePtr - old);
|
|
}
|
|
|
|
::memcpy(mBuffer + mBuffered, buffer, count);
|
|
mBuffered += count;
|
|
|
|
if (available)
|
|
*available = mBuffered - (mFramePtr - mBuffer);
|
|
|
|
return true;
|
|
}
|
|
|
|
nsresult
|
|
WebSocketChannel::ProcessInput(uint8_t *buffer, uint32_t count)
|
|
{
|
|
LOG(("WebSocketChannel::ProcessInput %p [%d %d]\n", this, count, mBuffered));
|
|
NS_ABORT_IF_FALSE(PR_GetCurrentThread() == gSocketThread, "not socket thread");
|
|
|
|
// The purpose of ping/pong is to actively probe the peer so that an
|
|
// unreachable peer is not mistaken for a period of idleness. This
|
|
// implementation accepts any application level read activity as a sign of
|
|
// life, it does not necessarily have to be a pong.
|
|
ResetPingTimer();
|
|
|
|
uint32_t avail;
|
|
|
|
if (!mBuffered) {
|
|
// Most of the time we can process right off the stack buffer without
|
|
// having to accumulate anything
|
|
mFramePtr = buffer;
|
|
avail = count;
|
|
} else {
|
|
if (!UpdateReadBuffer(buffer, count, mFragmentAccumulator, &avail)) {
|
|
return NS_ERROR_FILE_TOO_BIG;
|
|
}
|
|
}
|
|
|
|
uint8_t *payload;
|
|
uint32_t totalAvail = avail;
|
|
|
|
while (avail >= 2) {
|
|
int64_t payloadLength64 = mFramePtr[1] & 0x7F;
|
|
uint8_t finBit = mFramePtr[0] & kFinalFragBit;
|
|
uint8_t rsvBits = mFramePtr[0] & 0x70;
|
|
uint8_t maskBit = mFramePtr[1] & kMaskBit;
|
|
uint8_t opcode = mFramePtr[0] & 0x0F;
|
|
|
|
uint32_t framingLength = 2;
|
|
if (maskBit)
|
|
framingLength += 4;
|
|
|
|
if (payloadLength64 < 126) {
|
|
if (avail < framingLength)
|
|
break;
|
|
} else if (payloadLength64 == 126) {
|
|
// 16 bit length field
|
|
framingLength += 2;
|
|
if (avail < framingLength)
|
|
break;
|
|
|
|
payloadLength64 = mFramePtr[2] << 8 | mFramePtr[3];
|
|
} else {
|
|
// 64 bit length
|
|
framingLength += 8;
|
|
if (avail < framingLength)
|
|
break;
|
|
|
|
if (mFramePtr[2] & 0x80) {
|
|
// Section 4.2 says that the most significant bit MUST be
|
|
// 0. (i.e. this is really a 63 bit value)
|
|
LOG(("WebSocketChannel:: high bit of 64 bit length set"));
|
|
return NS_ERROR_ILLEGAL_VALUE;
|
|
}
|
|
|
|
// copy this in case it is unaligned
|
|
uint64_t tempLen;
|
|
memcpy(&tempLen, mFramePtr + 2, 8);
|
|
payloadLength64 = PR_ntohll(tempLen);
|
|
}
|
|
|
|
payload = mFramePtr + framingLength;
|
|
avail -= framingLength;
|
|
|
|
LOG(("WebSocketChannel::ProcessInput: payload %lld avail %lu\n",
|
|
payloadLength64, avail));
|
|
|
|
if (payloadLength64 + mFragmentAccumulator > mMaxMessageSize) {
|
|
return NS_ERROR_FILE_TOO_BIG;
|
|
}
|
|
uint32_t payloadLength = static_cast<uint32_t>(payloadLength64);
|
|
|
|
if (avail < payloadLength)
|
|
break;
|
|
|
|
LOG(("WebSocketChannel::ProcessInput: Frame accumulated - opcode %d\n",
|
|
opcode));
|
|
|
|
if (maskBit) {
|
|
// This is unexpected - the server does not generally send masked
|
|
// frames to the client, but it is allowed
|
|
LOG(("WebSocketChannel:: Client RECEIVING masked frame."));
|
|
|
|
uint32_t mask;
|
|
memcpy(&mask, payload - 4, 4);
|
|
mask = PR_ntohl(mask);
|
|
ApplyMask(mask, payload, payloadLength);
|
|
}
|
|
|
|
// Control codes are required to have the fin bit set
|
|
if (!finBit && (opcode & kControlFrameMask)) {
|
|
LOG(("WebSocketChannel:: fragmented control frame code %d\n", opcode));
|
|
return NS_ERROR_ILLEGAL_VALUE;
|
|
}
|
|
|
|
if (rsvBits) {
|
|
LOG(("WebSocketChannel:: unexpected reserved bits %x\n", rsvBits));
|
|
return NS_ERROR_ILLEGAL_VALUE;
|
|
}
|
|
|
|
if (!finBit || opcode == kContinuation) {
|
|
// This is part of a fragment response
|
|
|
|
// Only the first frame has a non zero op code: Make sure we don't see a
|
|
// first frame while some old fragments are open
|
|
if ((mFragmentAccumulator != 0) && (opcode != kContinuation)) {
|
|
LOG(("WebSocketChannel:: nested fragments\n"));
|
|
return NS_ERROR_ILLEGAL_VALUE;
|
|
}
|
|
|
|
LOG(("WebSocketChannel:: Accumulating Fragment %ld\n", payloadLength));
|
|
|
|
if (opcode == kContinuation) {
|
|
|
|
// Make sure this continuation fragment isn't the first fragment
|
|
if (mFragmentOpcode == kContinuation) {
|
|
LOG(("WebSocketHeandler:: continuation code in first fragment\n"));
|
|
return NS_ERROR_ILLEGAL_VALUE;
|
|
}
|
|
|
|
// For frag > 1 move the data body back on top of the headers
|
|
// so we have contiguous stream of data
|
|
NS_ABORT_IF_FALSE(mFramePtr + framingLength == payload,
|
|
"payload offset from frameptr wrong");
|
|
::memmove(mFramePtr, payload, avail);
|
|
payload = mFramePtr;
|
|
if (mBuffered)
|
|
mBuffered -= framingLength;
|
|
} else {
|
|
mFragmentOpcode = opcode;
|
|
}
|
|
|
|
if (finBit) {
|
|
LOG(("WebSocketChannel:: Finalizing Fragment\n"));
|
|
payload -= mFragmentAccumulator;
|
|
payloadLength += mFragmentAccumulator;
|
|
avail += mFragmentAccumulator;
|
|
mFragmentAccumulator = 0;
|
|
opcode = mFragmentOpcode;
|
|
// reset to detect if next message illegally starts with continuation
|
|
mFragmentOpcode = kContinuation;
|
|
} else {
|
|
opcode = kContinuation;
|
|
mFragmentAccumulator += payloadLength;
|
|
}
|
|
} else if (mFragmentAccumulator != 0 && !(opcode & kControlFrameMask)) {
|
|
// This frame is not part of a fragment sequence but we
|
|
// have an open fragment.. it must be a control code or else
|
|
// we have a problem
|
|
LOG(("WebSocketChannel:: illegal fragment sequence\n"));
|
|
return NS_ERROR_ILLEGAL_VALUE;
|
|
}
|
|
|
|
if (mServerClosed) {
|
|
LOG(("WebSocketChannel:: ignoring read frame code %d after close\n",
|
|
opcode));
|
|
// nop
|
|
} else if (mStopped) {
|
|
LOG(("WebSocketChannel:: ignoring read frame code %d after completion\n",
|
|
opcode));
|
|
} else if (opcode == kText) {
|
|
LOG(("WebSocketChannel:: text frame received\n"));
|
|
if (mListener) {
|
|
nsCString utf8Data;
|
|
if (!utf8Data.Assign((const char *)payload, payloadLength,
|
|
mozilla::fallible_t()))
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
// Section 8.1 says to fail connection if invalid utf-8 in text message
|
|
if (!IsUTF8(utf8Data, false)) {
|
|
LOG(("WebSocketChannel:: text frame invalid utf-8\n"));
|
|
return NS_ERROR_CANNOT_CONVERT_DATA;
|
|
}
|
|
|
|
NS_DispatchToMainThread(new CallOnMessageAvailable(this, utf8Data, -1));
|
|
nsresult rv;
|
|
if (mConnectionLogService) {
|
|
nsAutoCString host;
|
|
rv = mURI->GetHostPort(host);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
mConnectionLogService->NewMsgReceived(host, mSerial, count);
|
|
LOG(("Added new msg received for %s",host.get()));
|
|
}
|
|
}
|
|
}
|
|
} else if (opcode & kControlFrameMask) {
|
|
// control frames
|
|
if (payloadLength > 125) {
|
|
LOG(("WebSocketChannel:: bad control frame code %d length %d\n",
|
|
opcode, payloadLength));
|
|
return NS_ERROR_ILLEGAL_VALUE;
|
|
}
|
|
|
|
if (opcode == kClose) {
|
|
LOG(("WebSocketChannel:: close received\n"));
|
|
mServerClosed = 1;
|
|
|
|
mServerCloseCode = CLOSE_NO_STATUS;
|
|
if (payloadLength >= 2) {
|
|
memcpy(&mServerCloseCode, payload, 2);
|
|
mServerCloseCode = PR_ntohs(mServerCloseCode);
|
|
LOG(("WebSocketChannel:: close recvd code %u\n", mServerCloseCode));
|
|
uint16_t msglen = static_cast<uint16_t>(payloadLength - 2);
|
|
if (msglen > 0) {
|
|
mServerCloseReason.SetLength(msglen);
|
|
memcpy(mServerCloseReason.BeginWriting(),
|
|
(const char *)payload + 2, msglen);
|
|
|
|
// section 8.1 says to replace received non utf-8 sequences
|
|
// (which are non-conformant to send) with u+fffd,
|
|
// but secteam feels that silently rewriting messages is
|
|
// inappropriate - so we will fail the connection instead.
|
|
if (!IsUTF8(mServerCloseReason, false)) {
|
|
LOG(("WebSocketChannel:: close frame invalid utf-8\n"));
|
|
return NS_ERROR_CANNOT_CONVERT_DATA;
|
|
}
|
|
|
|
LOG(("WebSocketChannel:: close msg %s\n",
|
|
mServerCloseReason.get()));
|
|
}
|
|
}
|
|
|
|
if (mCloseTimer) {
|
|
mCloseTimer->Cancel();
|
|
mCloseTimer = nullptr;
|
|
}
|
|
if (mListener) {
|
|
NS_DispatchToMainThread(new CallOnServerClose(this, mServerCloseCode,
|
|
mServerCloseReason));
|
|
}
|
|
|
|
if (mClientClosed)
|
|
ReleaseSession();
|
|
} else if (opcode == kPing) {
|
|
LOG(("WebSocketChannel:: ping received\n"));
|
|
GeneratePong(payload, payloadLength);
|
|
} else if (opcode == kPong) {
|
|
// opcode kPong: the mere act of receiving the packet is all we need
|
|
// to do for the pong to trigger the activity timers
|
|
LOG(("WebSocketChannel:: pong received\n"));
|
|
} else {
|
|
/* unknown control frame opcode */
|
|
LOG(("WebSocketChannel:: unknown control op code %d\n", opcode));
|
|
return NS_ERROR_ILLEGAL_VALUE;
|
|
}
|
|
|
|
if (mFragmentAccumulator) {
|
|
// Remove the control frame from the stream so we have a contiguous
|
|
// data buffer of reassembled fragments
|
|
LOG(("WebSocketChannel:: Removing Control From Read buffer\n"));
|
|
NS_ABORT_IF_FALSE(mFramePtr + framingLength == payload,
|
|
"payload offset from frameptr wrong");
|
|
::memmove(mFramePtr, payload + payloadLength, avail - payloadLength);
|
|
payload = mFramePtr;
|
|
avail -= payloadLength;
|
|
if (mBuffered)
|
|
mBuffered -= framingLength + payloadLength;
|
|
payloadLength = 0;
|
|
}
|
|
} else if (opcode == kBinary) {
|
|
LOG(("WebSocketChannel:: binary frame received\n"));
|
|
if (mListener) {
|
|
nsCString binaryData((const char *)payload, payloadLength);
|
|
NS_DispatchToMainThread(new CallOnMessageAvailable(this, binaryData,
|
|
payloadLength));
|
|
// To add the header to 'Networking Dashboard' log
|
|
nsresult rv;
|
|
if (mConnectionLogService) {
|
|
nsAutoCString host;
|
|
rv = mURI->GetHostPort(host);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
mConnectionLogService->NewMsgReceived(host, mSerial, count);
|
|
LOG(("Added new received msg for %s",host.get()));
|
|
}
|
|
}
|
|
}
|
|
} else if (opcode != kContinuation) {
|
|
/* unknown opcode */
|
|
LOG(("WebSocketChannel:: unknown op code %d\n", opcode));
|
|
return NS_ERROR_ILLEGAL_VALUE;
|
|
}
|
|
|
|
mFramePtr = payload + payloadLength;
|
|
avail -= payloadLength;
|
|
totalAvail = avail;
|
|
}
|
|
|
|
// Adjust the stateful buffer. If we were operating off the stack and
|
|
// now have a partial message then transition to the buffer, or if
|
|
// we were working off the buffer but no longer have any active state
|
|
// then transition to the stack
|
|
if (!IsPersistentFramePtr()) {
|
|
mBuffered = 0;
|
|
|
|
if (mFragmentAccumulator) {
|
|
LOG(("WebSocketChannel:: Setup Buffer due to fragment"));
|
|
|
|
if (!UpdateReadBuffer(mFramePtr - mFragmentAccumulator,
|
|
totalAvail + mFragmentAccumulator, 0, nullptr)) {
|
|
return NS_ERROR_FILE_TOO_BIG;
|
|
}
|
|
|
|
// UpdateReadBuffer will reset the frameptr to the beginning
|
|
// of new saved state, so we need to skip past processed framgents
|
|
mFramePtr += mFragmentAccumulator;
|
|
} else if (totalAvail) {
|
|
LOG(("WebSocketChannel:: Setup Buffer due to partial frame"));
|
|
if (!UpdateReadBuffer(mFramePtr, totalAvail, 0, nullptr)) {
|
|
return NS_ERROR_FILE_TOO_BIG;
|
|
}
|
|
}
|
|
} else if (!mFragmentAccumulator && !totalAvail) {
|
|
// If we were working off a saved buffer state and there is no partial
|
|
// frame or fragment in process, then revert to stack behavior
|
|
LOG(("WebSocketChannel:: Internal buffering not needed anymore"));
|
|
mBuffered = 0;
|
|
|
|
// release memory if we've been processing a large message
|
|
if (mBufferSize > kIncomingBufferStableSize) {
|
|
mBufferSize = kIncomingBufferStableSize;
|
|
moz_free(mBuffer);
|
|
mBuffer = (uint8_t *)moz_xmalloc(mBufferSize);
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
WebSocketChannel::ApplyMask(uint32_t mask, uint8_t *data, uint64_t len)
|
|
{
|
|
if (!data || len == 0)
|
|
return;
|
|
|
|
// Optimally we want to apply the mask 32 bits at a time,
|
|
// but the buffer might not be alligned. So we first deal with
|
|
// 0 to 3 bytes of preamble individually
|
|
|
|
while (len && (reinterpret_cast<uintptr_t>(data) & 3)) {
|
|
*data ^= mask >> 24;
|
|
mask = PR_ROTATE_LEFT32(mask, 8);
|
|
data++;
|
|
len--;
|
|
}
|
|
|
|
// perform mask on full words of data
|
|
|
|
uint32_t *iData = (uint32_t *) data;
|
|
uint32_t *end = iData + (len / 4);
|
|
mask = PR_htonl(mask);
|
|
for (; iData < end; iData++)
|
|
*iData ^= mask;
|
|
mask = PR_ntohl(mask);
|
|
data = (uint8_t *)iData;
|
|
len = len % 4;
|
|
|
|
// There maybe up to 3 trailing bytes that need to be dealt with
|
|
// individually
|
|
|
|
while (len) {
|
|
*data ^= mask >> 24;
|
|
mask = PR_ROTATE_LEFT32(mask, 8);
|
|
data++;
|
|
len--;
|
|
}
|
|
}
|
|
|
|
void
|
|
WebSocketChannel::GeneratePing()
|
|
{
|
|
nsCString *buf = new nsCString();
|
|
buf->Assign("PING");
|
|
EnqueueOutgoingMessage(mOutgoingPingMessages,
|
|
new OutboundMessage(kMsgTypePing, buf));
|
|
}
|
|
|
|
void
|
|
WebSocketChannel::GeneratePong(uint8_t *payload, uint32_t len)
|
|
{
|
|
nsCString *buf = new nsCString();
|
|
buf->SetLength(len);
|
|
if (buf->Length() < len) {
|
|
LOG(("WebSocketChannel::GeneratePong Allocation Failure\n"));
|
|
delete buf;
|
|
return;
|
|
}
|
|
|
|
memcpy(buf->BeginWriting(), payload, len);
|
|
EnqueueOutgoingMessage(mOutgoingPongMessages,
|
|
new OutboundMessage(kMsgTypePong, buf));
|
|
}
|
|
|
|
void
|
|
WebSocketChannel::EnqueueOutgoingMessage(nsDeque &aQueue,
|
|
OutboundMessage *aMsg)
|
|
{
|
|
NS_ABORT_IF_FALSE(PR_GetCurrentThread() == gSocketThread, "not socket thread");
|
|
|
|
LOG(("WebSocketChannel::EnqueueOutgoingMessage %p "
|
|
"queueing msg %p [type=%s len=%d]\n",
|
|
this, aMsg, msgNames[aMsg->GetMsgType()], aMsg->Length()));
|
|
|
|
aQueue.Push(aMsg);
|
|
OnOutputStreamReady(mSocketOut);
|
|
}
|
|
|
|
|
|
uint16_t
|
|
WebSocketChannel::ResultToCloseCode(nsresult resultCode)
|
|
{
|
|
if (NS_SUCCEEDED(resultCode))
|
|
return CLOSE_NORMAL;
|
|
|
|
switch (resultCode) {
|
|
case NS_ERROR_FILE_TOO_BIG:
|
|
case NS_ERROR_OUT_OF_MEMORY:
|
|
return CLOSE_TOO_LARGE;
|
|
case NS_ERROR_CANNOT_CONVERT_DATA:
|
|
return CLOSE_INVALID_PAYLOAD;
|
|
case NS_ERROR_UNEXPECTED:
|
|
return CLOSE_INTERNAL_ERROR;
|
|
default:
|
|
return CLOSE_PROTOCOL_ERROR;
|
|
}
|
|
}
|
|
|
|
void
|
|
WebSocketChannel::PrimeNewOutgoingMessage()
|
|
{
|
|
LOG(("WebSocketChannel::PrimeNewOutgoingMessage() %p\n", this));
|
|
NS_ABORT_IF_FALSE(PR_GetCurrentThread() == gSocketThread, "not socket thread");
|
|
NS_ABORT_IF_FALSE(!mCurrentOut, "Current message in progress");
|
|
|
|
nsresult rv = NS_OK;
|
|
|
|
mCurrentOut = (OutboundMessage *)mOutgoingPongMessages.PopFront();
|
|
if (mCurrentOut) {
|
|
NS_ABORT_IF_FALSE(mCurrentOut->GetMsgType() == kMsgTypePong,
|
|
"Not pong message!");
|
|
} else {
|
|
mCurrentOut = (OutboundMessage *)mOutgoingPingMessages.PopFront();
|
|
if (mCurrentOut)
|
|
NS_ABORT_IF_FALSE(mCurrentOut->GetMsgType() == kMsgTypePing,
|
|
"Not ping message!");
|
|
else
|
|
mCurrentOut = (OutboundMessage *)mOutgoingMessages.PopFront();
|
|
}
|
|
|
|
if (!mCurrentOut)
|
|
return;
|
|
|
|
WsMsgType msgType = mCurrentOut->GetMsgType();
|
|
|
|
LOG(("WebSocketChannel::PrimeNewOutgoingMessage "
|
|
"%p found queued msg %p [type=%s len=%d]\n",
|
|
this, mCurrentOut, msgNames[msgType], mCurrentOut->Length()));
|
|
|
|
mCurrentOutSent = 0;
|
|
mHdrOut = mOutHeader;
|
|
|
|
uint8_t *payload = nullptr;
|
|
|
|
if (msgType == kMsgTypeFin) {
|
|
// This is a demand to create a close message
|
|
if (mClientClosed) {
|
|
DeleteCurrentOutGoingMessage();
|
|
PrimeNewOutgoingMessage();
|
|
return;
|
|
}
|
|
|
|
mClientClosed = 1;
|
|
mOutHeader[0] = kFinalFragBit | kClose;
|
|
mOutHeader[1] = kMaskBit;
|
|
|
|
// payload is offset 6 including 4 for the mask
|
|
payload = mOutHeader + 6;
|
|
|
|
// The close reason code sits in the first 2 bytes of payload
|
|
// If the channel user provided a code and reason during Close()
|
|
// and there isn't an internal error, use that.
|
|
if (NS_SUCCEEDED(mStopOnClose)) {
|
|
if (mScriptCloseCode) {
|
|
*((uint16_t *)payload) = PR_htons(mScriptCloseCode);
|
|
mOutHeader[1] += 2;
|
|
mHdrOutToSend = 8;
|
|
if (!mScriptCloseReason.IsEmpty()) {
|
|
NS_ABORT_IF_FALSE(mScriptCloseReason.Length() <= 123,
|
|
"Close Reason Too Long");
|
|
mOutHeader[1] += mScriptCloseReason.Length();
|
|
mHdrOutToSend += mScriptCloseReason.Length();
|
|
memcpy (payload + 2,
|
|
mScriptCloseReason.BeginReading(),
|
|
mScriptCloseReason.Length());
|
|
}
|
|
} else {
|
|
// No close code/reason, so payload length = 0. We must still send mask
|
|
// even though it's not used. Keep payload offset so we write mask
|
|
// below.
|
|
mHdrOutToSend = 6;
|
|
}
|
|
} else {
|
|
*((uint16_t *)payload) = PR_htons(ResultToCloseCode(mStopOnClose));
|
|
mOutHeader[1] += 2;
|
|
mHdrOutToSend = 8;
|
|
}
|
|
|
|
if (mServerClosed) {
|
|
/* bidi close complete */
|
|
mReleaseOnTransmit = 1;
|
|
} else if (NS_FAILED(mStopOnClose)) {
|
|
/* result of abort session - give up */
|
|
StopSession(mStopOnClose);
|
|
} else {
|
|
/* wait for reciprocal close from server */
|
|
mCloseTimer = do_CreateInstance("@mozilla.org/timer;1", &rv);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
mCloseTimer->InitWithCallback(this, mCloseTimeout,
|
|
nsITimer::TYPE_ONE_SHOT);
|
|
} else {
|
|
StopSession(rv);
|
|
}
|
|
}
|
|
} else {
|
|
switch (msgType) {
|
|
case kMsgTypePong:
|
|
mOutHeader[0] = kFinalFragBit | kPong;
|
|
break;
|
|
case kMsgTypePing:
|
|
mOutHeader[0] = kFinalFragBit | kPing;
|
|
break;
|
|
case kMsgTypeString:
|
|
mOutHeader[0] = kFinalFragBit | kText;
|
|
break;
|
|
case kMsgTypeStream:
|
|
// HACK ALERT: read in entire stream into string.
|
|
// Will block socket transport thread if file is blocking.
|
|
// TODO: bug 704447: don't block socket thread!
|
|
rv = mCurrentOut->ConvertStreamToString();
|
|
if (NS_FAILED(rv)) {
|
|
AbortSession(NS_ERROR_FILE_TOO_BIG);
|
|
return;
|
|
}
|
|
// Now we're a binary string
|
|
msgType = kMsgTypeBinaryString;
|
|
|
|
// no break: fall down into binary string case
|
|
|
|
case kMsgTypeBinaryString:
|
|
mOutHeader[0] = kFinalFragBit | kBinary;
|
|
break;
|
|
case kMsgTypeFin:
|
|
NS_ABORT_IF_FALSE(false, "unreachable"); // avoid compiler warning
|
|
break;
|
|
}
|
|
|
|
if (mCurrentOut->Length() < 126) {
|
|
mOutHeader[1] = mCurrentOut->Length() | kMaskBit;
|
|
mHdrOutToSend = 6;
|
|
} else if (mCurrentOut->Length() <= 0xffff) {
|
|
mOutHeader[1] = 126 | kMaskBit;
|
|
((uint16_t *)mOutHeader)[1] =
|
|
PR_htons(mCurrentOut->Length());
|
|
mHdrOutToSend = 8;
|
|
} else {
|
|
mOutHeader[1] = 127 | kMaskBit;
|
|
uint64_t tempLen = mCurrentOut->Length();
|
|
tempLen = PR_htonll(tempLen);
|
|
memcpy(mOutHeader + 2, &tempLen, 8);
|
|
mHdrOutToSend = 14;
|
|
}
|
|
payload = mOutHeader + mHdrOutToSend;
|
|
}
|
|
|
|
NS_ABORT_IF_FALSE(payload, "payload offset not found");
|
|
|
|
// Perform the sending mask. Never use a zero mask
|
|
uint32_t mask;
|
|
do {
|
|
uint8_t *buffer;
|
|
nsresult rv = mRandomGenerator->GenerateRandomBytes(4, &buffer);
|
|
if (NS_FAILED(rv)) {
|
|
LOG(("WebSocketChannel::PrimeNewOutgoingMessage(): "
|
|
"GenerateRandomBytes failure %x\n", rv));
|
|
StopSession(rv);
|
|
return;
|
|
}
|
|
mask = * reinterpret_cast<uint32_t *>(buffer);
|
|
NS_Free(buffer);
|
|
} while (!mask);
|
|
*(((uint32_t *)payload) - 1) = PR_htonl(mask);
|
|
|
|
LOG(("WebSocketChannel::PrimeNewOutgoingMessage() using mask %08x\n", mask));
|
|
|
|
// We don't mask the framing, but occasionally we stick a little payload
|
|
// data in the buffer used for the framing. Close frames are the current
|
|
// example. This data needs to be masked, but it is never more than a
|
|
// handful of bytes and might rotate the mask, so we can just do it locally.
|
|
// For real data frames we ship the bulk of the payload off to ApplyMask()
|
|
|
|
while (payload < (mOutHeader + mHdrOutToSend)) {
|
|
*payload ^= mask >> 24;
|
|
mask = PR_ROTATE_LEFT32(mask, 8);
|
|
payload++;
|
|
}
|
|
|
|
// Mask the real message payloads
|
|
|
|
ApplyMask(mask, mCurrentOut->BeginWriting(), mCurrentOut->Length());
|
|
|
|
int32_t len = mCurrentOut->Length();
|
|
|
|
// for small frames, copy it all together for a contiguous write
|
|
if (len && len <= kCopyBreak) {
|
|
memcpy(mOutHeader + mHdrOutToSend, mCurrentOut->BeginWriting(), len);
|
|
mHdrOutToSend += len;
|
|
mCurrentOutSent = len;
|
|
}
|
|
|
|
if (len && mCompressor) {
|
|
// assume a 1/3 reduction in size for sizing the buffer
|
|
// the buffer is used multiple times if necessary
|
|
uint32_t currentHeaderSize = mHdrOutToSend;
|
|
mHdrOutToSend = 0;
|
|
|
|
EnsureHdrOut(32 + (currentHeaderSize + len - mCurrentOutSent) / 2 * 3);
|
|
mCompressor->Deflate(mOutHeader, currentHeaderSize,
|
|
mCurrentOut->BeginReading() + mCurrentOutSent,
|
|
len - mCurrentOutSent);
|
|
|
|
// All of the compressed data now resides in {mHdrOut, mHdrOutToSend}
|
|
// so do not send the body again
|
|
mCurrentOutSent = len;
|
|
}
|
|
|
|
// Transmitting begins - mHdrOutToSend bytes from mOutHeader and
|
|
// mCurrentOut->Length() bytes from mCurrentOut. The latter may be
|
|
// coaleseced into the former for small messages or as the result of the
|
|
// compression process,
|
|
}
|
|
|
|
void
|
|
WebSocketChannel::DeleteCurrentOutGoingMessage()
|
|
{
|
|
delete mCurrentOut;
|
|
mCurrentOut = nullptr;
|
|
mCurrentOutSent = 0;
|
|
}
|
|
|
|
void
|
|
WebSocketChannel::EnsureHdrOut(uint32_t size)
|
|
{
|
|
LOG(("WebSocketChannel::EnsureHdrOut() %p [%d]\n", this, size));
|
|
|
|
if (mDynamicOutputSize < size) {
|
|
mDynamicOutputSize = size;
|
|
mDynamicOutput =
|
|
(uint8_t *) moz_xrealloc(mDynamicOutput, mDynamicOutputSize);
|
|
}
|
|
|
|
mHdrOut = mDynamicOutput;
|
|
}
|
|
|
|
void
|
|
WebSocketChannel::CleanupConnection()
|
|
{
|
|
LOG(("WebSocketChannel::CleanupConnection() %p", this));
|
|
|
|
if (mLingeringCloseTimer) {
|
|
mLingeringCloseTimer->Cancel();
|
|
mLingeringCloseTimer = nullptr;
|
|
}
|
|
|
|
if (mSocketIn) {
|
|
mSocketIn->AsyncWait(nullptr, 0, 0, nullptr);
|
|
mSocketIn = nullptr;
|
|
}
|
|
|
|
if (mSocketOut) {
|
|
mSocketOut->AsyncWait(nullptr, 0, 0, nullptr);
|
|
mSocketOut = nullptr;
|
|
}
|
|
|
|
if (mTransport) {
|
|
mTransport->SetSecurityCallbacks(nullptr);
|
|
mTransport->SetEventSink(nullptr, nullptr);
|
|
mTransport->Close(NS_BASE_STREAM_CLOSED);
|
|
mTransport = nullptr;
|
|
}
|
|
|
|
nsresult rv;
|
|
if (mConnectionLogService) {
|
|
nsAutoCString host;
|
|
rv = mURI->GetHostPort(host);
|
|
if (NS_SUCCEEDED(rv))
|
|
mConnectionLogService->RemoveHost(host, mSerial);
|
|
}
|
|
|
|
DecrementSessionCount();
|
|
}
|
|
|
|
void
|
|
WebSocketChannel::StopSession(nsresult reason)
|
|
{
|
|
LOG(("WebSocketChannel::StopSession() %p [%x]\n", this, reason));
|
|
|
|
// normally this should be called on socket thread, but it is ok to call it
|
|
// from OnStartRequest before the socket thread machine has gotten underway
|
|
|
|
mStopped = 1;
|
|
|
|
if (!mOpenedHttpChannel) {
|
|
// The HTTP channel information will never be used in this case
|
|
mChannel = nullptr;
|
|
mHttpChannel = nullptr;
|
|
mLoadGroup = nullptr;
|
|
mCallbacks = nullptr;
|
|
}
|
|
|
|
if (mCloseTimer) {
|
|
mCloseTimer->Cancel();
|
|
mCloseTimer = nullptr;
|
|
}
|
|
|
|
if (mOpenTimer) {
|
|
mOpenTimer->Cancel();
|
|
mOpenTimer = nullptr;
|
|
}
|
|
|
|
if (mReconnectDelayTimer) {
|
|
mReconnectDelayTimer->Cancel();
|
|
mReconnectDelayTimer = nullptr;
|
|
}
|
|
|
|
if (mPingTimer) {
|
|
mPingTimer->Cancel();
|
|
mPingTimer = nullptr;
|
|
}
|
|
|
|
if (mSocketIn && !mTCPClosed) {
|
|
// Drain, within reason, this socket. if we leave any data
|
|
// unconsumed (including the tcp fin) a RST will be generated
|
|
// The right thing to do here is shutdown(SHUT_WR) and then wait
|
|
// a little while to see if any data comes in.. but there is no
|
|
// reason to delay things for that when the websocket handshake
|
|
// is supposed to guarantee a quiet connection except for that fin.
|
|
|
|
char buffer[512];
|
|
uint32_t count = 0;
|
|
uint32_t total = 0;
|
|
nsresult rv;
|
|
do {
|
|
total += count;
|
|
rv = mSocketIn->Read(buffer, 512, &count);
|
|
if (rv != NS_BASE_STREAM_WOULD_BLOCK &&
|
|
(NS_FAILED(rv) || count == 0))
|
|
mTCPClosed = true;
|
|
} while (NS_SUCCEEDED(rv) && count > 0 && total < 32000);
|
|
}
|
|
|
|
if (!mTCPClosed && mTransport && sWebSocketAdmissions &&
|
|
sWebSocketAdmissions->SessionCount() < kLingeringCloseThreshold) {
|
|
|
|
// 7.1.1 says that the client SHOULD wait for the server to close the TCP
|
|
// connection. This is so we can reuse port numbers before 2 MSL expires,
|
|
// which is not really as much of a concern for us as the amount of state
|
|
// that might be accrued by keeping this channel object around waiting for
|
|
// the server. We handle the SHOULD by waiting a short time in the common
|
|
// case, but not waiting in the case of high concurrency.
|
|
//
|
|
// Normally this will be taken care of in AbortSession() after mTCPClosed
|
|
// is set when the server close arrives without waiting for the timeout to
|
|
// expire.
|
|
|
|
LOG(("WebSocketChannel::StopSession: Wait for Server TCP close"));
|
|
|
|
nsresult rv;
|
|
mLingeringCloseTimer = do_CreateInstance("@mozilla.org/timer;1", &rv);
|
|
if (NS_SUCCEEDED(rv))
|
|
mLingeringCloseTimer->InitWithCallback(this, kLingeringCloseTimeout,
|
|
nsITimer::TYPE_ONE_SHOT);
|
|
else
|
|
CleanupConnection();
|
|
} else {
|
|
CleanupConnection();
|
|
}
|
|
|
|
if (mDNSRequest) {
|
|
mDNSRequest->Cancel(NS_ERROR_UNEXPECTED);
|
|
mDNSRequest = nullptr;
|
|
}
|
|
|
|
mInflateReader = nullptr;
|
|
mInflateStream = nullptr;
|
|
|
|
delete mCompressor;
|
|
mCompressor = nullptr;
|
|
|
|
if (!mCalledOnStop) {
|
|
mCalledOnStop = 1;
|
|
NS_DispatchToMainThread(new CallOnStop(this, reason));
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
void
|
|
WebSocketChannel::AbortSession(nsresult reason)
|
|
{
|
|
LOG(("WebSocketChannel::AbortSession() %p [reason %x] stopped = %d\n",
|
|
this, reason, mStopped));
|
|
|
|
// normally this should be called on socket thread, but it is ok to call it
|
|
// from the main thread before StartWebsocketData() has completed
|
|
|
|
// When we are failing we need to close the TCP connection immediately
|
|
// as per 7.1.1
|
|
mTCPClosed = true;
|
|
|
|
if (mLingeringCloseTimer) {
|
|
NS_ABORT_IF_FALSE(mStopped, "Lingering without Stop");
|
|
LOG(("WebSocketChannel:: Cleanup connection based on TCP Close"));
|
|
CleanupConnection();
|
|
return;
|
|
}
|
|
|
|
if (mStopped)
|
|
return;
|
|
mStopped = 1;
|
|
|
|
if (mTransport && reason != NS_BASE_STREAM_CLOSED &&
|
|
!mRequestedClose && !mClientClosed && !mServerClosed) {
|
|
mRequestedClose = 1;
|
|
mStopOnClose = reason;
|
|
mSocketThread->Dispatch(
|
|
new OutboundEnqueuer(this, new OutboundMessage(kMsgTypeFin, nullptr)),
|
|
nsIEventTarget::DISPATCH_NORMAL);
|
|
} else {
|
|
StopSession(reason);
|
|
}
|
|
}
|
|
|
|
// ReleaseSession is called on orderly shutdown
|
|
void
|
|
WebSocketChannel::ReleaseSession()
|
|
{
|
|
LOG(("WebSocketChannel::ReleaseSession() %p stopped = %d\n",
|
|
this, mStopped));
|
|
NS_ABORT_IF_FALSE(PR_GetCurrentThread() == gSocketThread, "not socket thread");
|
|
|
|
if (mStopped)
|
|
return;
|
|
StopSession(NS_OK);
|
|
}
|
|
|
|
void
|
|
WebSocketChannel::IncrementSessionCount()
|
|
{
|
|
if (!mIncrementedSessionCount) {
|
|
sWebSocketAdmissions->IncrementSessionCount();
|
|
mIncrementedSessionCount = 1;
|
|
}
|
|
}
|
|
|
|
void
|
|
WebSocketChannel::DecrementSessionCount()
|
|
{
|
|
// Make sure we decrement session count only once, and only if we incremented it.
|
|
// This code is thread-safe: sWebSocketAdmissions->DecrementSessionCount is
|
|
// atomic, and mIncrementedSessionCount/mDecrementedSessionCount are set at
|
|
// times when they'll never be a race condition for checking/setting them.
|
|
if (mIncrementedSessionCount && !mDecrementedSessionCount) {
|
|
sWebSocketAdmissions->DecrementSessionCount();
|
|
mDecrementedSessionCount = 1;
|
|
}
|
|
}
|
|
|
|
nsresult
|
|
WebSocketChannel::HandleExtensions()
|
|
{
|
|
LOG(("WebSocketChannel::HandleExtensions() %p\n", this));
|
|
|
|
nsresult rv;
|
|
nsAutoCString extensions;
|
|
|
|
NS_ABORT_IF_FALSE(NS_IsMainThread(), "not main thread");
|
|
|
|
rv = mHttpChannel->GetResponseHeader(
|
|
NS_LITERAL_CSTRING("Sec-WebSocket-Extensions"), extensions);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
if (!extensions.IsEmpty()) {
|
|
if (!extensions.Equals(NS_LITERAL_CSTRING("deflate-stream"))) {
|
|
LOG(("WebSocketChannel::OnStartRequest: "
|
|
"HTTP Sec-WebSocket-Exensions negotiated unknown value %s\n",
|
|
extensions.get()));
|
|
AbortSession(NS_ERROR_ILLEGAL_VALUE);
|
|
return NS_ERROR_ILLEGAL_VALUE;
|
|
}
|
|
|
|
if (!mAllowCompression) {
|
|
LOG(("WebSocketChannel::HandleExtensions: "
|
|
"Recvd Compression Extension that wasn't offered\n"));
|
|
AbortSession(NS_ERROR_ILLEGAL_VALUE);
|
|
return NS_ERROR_ILLEGAL_VALUE;
|
|
}
|
|
|
|
nsCOMPtr<nsIStreamConverterService> serv =
|
|
do_GetService(NS_STREAMCONVERTERSERVICE_CONTRACTID, &rv);
|
|
if (NS_FAILED(rv)) {
|
|
LOG(("WebSocketChannel:: Cannot find compression service\n"));
|
|
AbortSession(NS_ERROR_UNEXPECTED);
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
rv = serv->AsyncConvertData("deflate", "uncompressed", this, nullptr,
|
|
getter_AddRefs(mInflateReader));
|
|
|
|
if (NS_FAILED(rv)) {
|
|
LOG(("WebSocketChannel:: Cannot find inflate listener\n"));
|
|
AbortSession(NS_ERROR_UNEXPECTED);
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
mInflateStream = do_CreateInstance(NS_STRINGINPUTSTREAM_CONTRACTID, &rv);
|
|
|
|
if (NS_FAILED(rv)) {
|
|
LOG(("WebSocketChannel:: Cannot find inflate stream\n"));
|
|
AbortSession(NS_ERROR_UNEXPECTED);
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
mCompressor = new nsWSCompression(this, mSocketOut);
|
|
if (!mCompressor->Active()) {
|
|
LOG(("WebSocketChannel:: Cannot init deflate object\n"));
|
|
delete mCompressor;
|
|
mCompressor = nullptr;
|
|
AbortSession(NS_ERROR_UNEXPECTED);
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
mNegotiatedExtensions = extensions;
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
WebSocketChannel::SetupRequest()
|
|
{
|
|
LOG(("WebSocketChannel::SetupRequest() %p\n", this));
|
|
|
|
nsresult rv;
|
|
|
|
if (mLoadGroup) {
|
|
rv = mHttpChannel->SetLoadGroup(mLoadGroup);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
rv = mHttpChannel->SetLoadFlags(nsIRequest::LOAD_BACKGROUND |
|
|
nsIRequest::INHIBIT_CACHING |
|
|
nsIRequest::LOAD_BYPASS_CACHE);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// we never let websockets be blocked by head CSS/JS loads to avoid
|
|
// potential deadlock where server generation of CSS/JS requires
|
|
// an XHR signal.
|
|
rv = mChannel->SetLoadUnblocked(true);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// draft-ietf-hybi-thewebsocketprotocol-07 illustrates Upgrade: websocket
|
|
// in lower case, so go with that. It is technically case insensitive.
|
|
rv = mChannel->HTTPUpgrade(NS_LITERAL_CSTRING("websocket"), this);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
mHttpChannel->SetRequestHeader(
|
|
NS_LITERAL_CSTRING("Sec-WebSocket-Version"),
|
|
NS_LITERAL_CSTRING(SEC_WEBSOCKET_VERSION), false);
|
|
|
|
if (!mOrigin.IsEmpty())
|
|
mHttpChannel->SetRequestHeader(NS_LITERAL_CSTRING("Origin"), mOrigin,
|
|
false);
|
|
|
|
if (!mProtocol.IsEmpty())
|
|
mHttpChannel->SetRequestHeader(NS_LITERAL_CSTRING("Sec-WebSocket-Protocol"),
|
|
mProtocol, true);
|
|
|
|
if (mAllowCompression)
|
|
mHttpChannel->SetRequestHeader(NS_LITERAL_CSTRING("Sec-WebSocket-Extensions"),
|
|
NS_LITERAL_CSTRING("deflate-stream"),
|
|
false);
|
|
|
|
uint8_t *secKey;
|
|
nsAutoCString secKeyString;
|
|
|
|
rv = mRandomGenerator->GenerateRandomBytes(16, &secKey);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
char* b64 = PL_Base64Encode((const char *)secKey, 16, nullptr);
|
|
NS_Free(secKey);
|
|
if (!b64)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
secKeyString.Assign(b64);
|
|
PR_Free(b64);
|
|
mHttpChannel->SetRequestHeader(NS_LITERAL_CSTRING("Sec-WebSocket-Key"),
|
|
secKeyString, false);
|
|
LOG(("WebSocketChannel::SetupRequest: client key %s\n", secKeyString.get()));
|
|
|
|
// prepare the value we expect to see in
|
|
// the sec-websocket-accept response header
|
|
secKeyString.AppendLiteral("258EAFA5-E914-47DA-95CA-C5AB0DC85B11");
|
|
nsCOMPtr<nsICryptoHash> hasher =
|
|
do_CreateInstance(NS_CRYPTO_HASH_CONTRACTID, &rv);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
rv = hasher->Init(nsICryptoHash::SHA1);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
rv = hasher->Update((const uint8_t *) secKeyString.BeginWriting(),
|
|
secKeyString.Length());
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
rv = hasher->Finish(true, mHashedSecret);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
LOG(("WebSocketChannel::SetupRequest: expected server key %s\n",
|
|
mHashedSecret.get()));
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
WebSocketChannel::ApplyForAdmission()
|
|
{
|
|
LOG(("WebSocketChannel::ApplyForAdmission() %p\n", this));
|
|
|
|
// Websockets has a policy of 1 session at a time being allowed in the
|
|
// CONNECTING state per server IP address (not hostname)
|
|
|
|
nsresult rv;
|
|
nsCOMPtr<nsIDNSService> dns = do_GetService(NS_DNSSERVICE_CONTRACTID, &rv);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsCString hostName;
|
|
rv = mURI->GetHost(hostName);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
mAddress = hostName;
|
|
rv = mURI->GetPort(&mPort);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
if (mPort == -1)
|
|
mPort = (mEncrypted ? kDefaultWSSPort : kDefaultWSPort);
|
|
|
|
// expect the callback in ::OnLookupComplete
|
|
LOG(("WebSocketChannel::ApplyForAdmission: checking for concurrent open\n"));
|
|
nsCOMPtr<nsIThread> mainThread;
|
|
NS_GetMainThread(getter_AddRefs(mainThread));
|
|
dns->AsyncResolve(hostName, 0, this, mainThread, getter_AddRefs(mDNSRequest));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// Called after both OnStartRequest and OnTransportAvailable have
|
|
// executed. This essentially ends the handshake and starts the websockets
|
|
// protocol state machine.
|
|
nsresult
|
|
WebSocketChannel::StartWebsocketData()
|
|
{
|
|
LOG(("WebSocketChannel::StartWebsocketData() %p", this));
|
|
NS_ABORT_IF_FALSE(!mDataStarted, "StartWebsocketData twice");
|
|
mDataStarted = 1;
|
|
|
|
// We're now done CONNECTING, which means we can now open another,
|
|
// perhaps parallel, connection to the same host if one
|
|
// is pending
|
|
sWebSocketAdmissions->OnConnected(this);
|
|
|
|
LOG(("WebSocketChannel::StartWebsocketData Notifying Listener %p\n",
|
|
mListener.get()));
|
|
|
|
if (mListener)
|
|
mListener->OnStart(mContext);
|
|
|
|
// Start keepalive ping timer, if we're using keepalive.
|
|
if (mPingInterval) {
|
|
nsresult rv;
|
|
mPingTimer = do_CreateInstance("@mozilla.org/timer;1", &rv);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("unable to create ping timer. Carrying on.");
|
|
} else {
|
|
LOG(("WebSocketChannel will generate ping after %d ms of receive silence\n",
|
|
mPingInterval));
|
|
mPingTimer->SetTarget(mSocketThread);
|
|
mPingTimer->InitWithCallback(this, mPingInterval, nsITimer::TYPE_ONE_SHOT);
|
|
}
|
|
}
|
|
|
|
return mSocketIn->AsyncWait(this, 0, 0, mSocketThread);
|
|
}
|
|
|
|
void
|
|
WebSocketChannel::ReportConnectionTelemetry()
|
|
{
|
|
// 3 bits are used. high bit is for wss, middle bit for failed,
|
|
// and low bit for proxy..
|
|
// 0 - 7 : ws-ok-plain, ws-ok-proxy, ws-failed-plain, ws-failed-proxy,
|
|
// wss-ok-plain, wss-ok-proxy, wss-failed-plain, wss-failed-proxy
|
|
|
|
bool didProxy = false;
|
|
|
|
nsCOMPtr<nsIProxyInfo> pi;
|
|
nsCOMPtr<nsIProxiedChannel> pc = do_QueryInterface(mChannel);
|
|
if (pc)
|
|
pc->GetProxyInfo(getter_AddRefs(pi));
|
|
if (pi) {
|
|
nsAutoCString proxyType;
|
|
pi->GetType(proxyType);
|
|
if (!proxyType.IsEmpty() &&
|
|
!proxyType.Equals(NS_LITERAL_CSTRING("direct")))
|
|
didProxy = true;
|
|
}
|
|
|
|
uint8_t value = (mEncrypted ? (1 << 2) : 0) |
|
|
(!mGotUpgradeOK ? (1 << 1) : 0) |
|
|
(didProxy ? (1 << 0) : 0);
|
|
|
|
LOG(("WebSocketChannel::ReportConnectionTelemetry() %p %d", this, value));
|
|
Telemetry::Accumulate(Telemetry::WEBSOCKETS_HANDSHAKE_TYPE, value);
|
|
}
|
|
|
|
// nsIDNSListener
|
|
|
|
NS_IMETHODIMP
|
|
WebSocketChannel::OnLookupComplete(nsICancelable *aRequest,
|
|
nsIDNSRecord *aRecord,
|
|
nsresult aStatus)
|
|
{
|
|
LOG(("WebSocketChannel::OnLookupComplete() %p [%p %p %x]\n",
|
|
this, aRequest, aRecord, aStatus));
|
|
|
|
NS_ABORT_IF_FALSE(NS_IsMainThread(), "not main thread");
|
|
NS_ABORT_IF_FALSE(aRequest == mDNSRequest || mStopped,
|
|
"wrong dns request");
|
|
|
|
if (mStopped) {
|
|
LOG(("WebSocketChannel::OnLookupComplete: Request Already Stopped\n"));
|
|
return NS_OK;
|
|
}
|
|
|
|
mDNSRequest = nullptr;
|
|
|
|
// These failures are not fatal - we just use the hostname as the key
|
|
if (NS_FAILED(aStatus)) {
|
|
LOG(("WebSocketChannel::OnLookupComplete: No DNS Response\n"));
|
|
} else {
|
|
nsresult rv = aRecord->GetNextAddrAsString(mAddress);
|
|
if (NS_FAILED(rv))
|
|
LOG(("WebSocketChannel::OnLookupComplete: Failed GetNextAddr\n"));
|
|
}
|
|
|
|
LOG(("WebSocket OnLookupComplete: Proceeding to ConditionallyConnect\n"));
|
|
sWebSocketAdmissions->ConditionallyConnect(this);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// nsIInterfaceRequestor
|
|
|
|
NS_IMETHODIMP
|
|
WebSocketChannel::GetInterface(const nsIID & iid, void **result)
|
|
{
|
|
LOG(("WebSocketChannel::GetInterface() %p\n", this));
|
|
|
|
if (iid.Equals(NS_GET_IID(nsIChannelEventSink)))
|
|
return QueryInterface(iid, result);
|
|
|
|
if (mCallbacks)
|
|
return mCallbacks->GetInterface(iid, result);
|
|
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// nsIChannelEventSink
|
|
|
|
NS_IMETHODIMP
|
|
WebSocketChannel::AsyncOnChannelRedirect(
|
|
nsIChannel *oldChannel,
|
|
nsIChannel *newChannel,
|
|
uint32_t flags,
|
|
nsIAsyncVerifyRedirectCallback *callback)
|
|
{
|
|
LOG(("WebSocketChannel::AsyncOnChannelRedirect() %p\n", this));
|
|
nsresult rv;
|
|
|
|
nsCOMPtr<nsIURI> newuri;
|
|
rv = newChannel->GetURI(getter_AddRefs(newuri));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// newuri is expected to be http or https
|
|
bool newuriIsHttps = false;
|
|
rv = newuri->SchemeIs("https", &newuriIsHttps);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (!mAutoFollowRedirects) {
|
|
// Even if redirects configured off, still allow them for HTTP Strict
|
|
// Transport Security (from ws://FOO to https://FOO (mapped to wss://FOO)
|
|
|
|
nsCOMPtr<nsIURI> clonedNewURI;
|
|
rv = newuri->Clone(getter_AddRefs(clonedNewURI));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
rv = clonedNewURI->SetScheme(NS_LITERAL_CSTRING("ws"));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsCOMPtr<nsIURI> currentURI;
|
|
rv = GetURI(getter_AddRefs(currentURI));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// currentURI is expected to be ws or wss
|
|
bool currentIsHttps = false;
|
|
rv = currentURI->SchemeIs("wss", ¤tIsHttps);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
bool uriEqual = false;
|
|
rv = clonedNewURI->Equals(currentURI, &uriEqual);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// It's only a HSTS redirect if we started with non-secure, are going to
|
|
// secure, and the new URI is otherwise the same as the old one.
|
|
if (!(!currentIsHttps && newuriIsHttps && uriEqual)) {
|
|
nsAutoCString newSpec;
|
|
rv = newuri->GetSpec(newSpec);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
LOG(("WebSocketChannel: Redirect to %s denied by configuration\n",
|
|
newSpec.get()));
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
}
|
|
|
|
if (mEncrypted && !newuriIsHttps) {
|
|
nsAutoCString spec;
|
|
if (NS_SUCCEEDED(newuri->GetSpec(spec)))
|
|
LOG(("WebSocketChannel: Redirect to %s violates encryption rule\n",
|
|
spec.get()));
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsCOMPtr<nsIHttpChannel> newHttpChannel = do_QueryInterface(newChannel, &rv);
|
|
if (NS_FAILED(rv)) {
|
|
LOG(("WebSocketChannel: Redirect could not QI to HTTP\n"));
|
|
return rv;
|
|
}
|
|
|
|
nsCOMPtr<nsIHttpChannelInternal> newUpgradeChannel =
|
|
do_QueryInterface(newChannel, &rv);
|
|
|
|
if (NS_FAILED(rv)) {
|
|
LOG(("WebSocketChannel: Redirect could not QI to HTTP Upgrade\n"));
|
|
return rv;
|
|
}
|
|
|
|
// The redirect is likely OK
|
|
|
|
newChannel->SetNotificationCallbacks(this);
|
|
|
|
mEncrypted = newuriIsHttps;
|
|
newuri->Clone(getter_AddRefs(mURI));
|
|
if (mEncrypted)
|
|
rv = mURI->SetScheme(NS_LITERAL_CSTRING("wss"));
|
|
else
|
|
rv = mURI->SetScheme(NS_LITERAL_CSTRING("ws"));
|
|
|
|
mHttpChannel = newHttpChannel;
|
|
mChannel = newUpgradeChannel;
|
|
rv = SetupRequest();
|
|
if (NS_FAILED(rv)) {
|
|
LOG(("WebSocketChannel: Redirect could not SetupRequest()\n"));
|
|
return rv;
|
|
}
|
|
|
|
// Redirected-to URI may need to be delayed by 1-connecting-per-host and
|
|
// delay-after-fail algorithms. So hold off calling OnRedirectVerifyCallback
|
|
// until BeginOpen, when we know it's OK to proceed with new channel.
|
|
mRedirectCallback = callback;
|
|
|
|
// Mark old channel as successfully connected so we'll clear any FailDelay
|
|
// associated with the old URI. Note: no need to also call OnStopSession:
|
|
// it's a no-op for successful, already-connected channels.
|
|
sWebSocketAdmissions->OnConnected(this);
|
|
|
|
// ApplyForAdmission as if we were starting from fresh...
|
|
mAddress.Truncate();
|
|
mOpenedHttpChannel = 0;
|
|
rv = ApplyForAdmission();
|
|
if (NS_FAILED(rv)) {
|
|
LOG(("WebSocketChannel: Redirect failed due to DNS failure\n"));
|
|
mRedirectCallback = nullptr;
|
|
return rv;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// nsITimerCallback
|
|
|
|
NS_IMETHODIMP
|
|
WebSocketChannel::Notify(nsITimer *timer)
|
|
{
|
|
LOG(("WebSocketChannel::Notify() %p [%p]\n", this, timer));
|
|
|
|
if (timer == mCloseTimer) {
|
|
NS_ABORT_IF_FALSE(mClientClosed, "Close Timeout without local close");
|
|
NS_ABORT_IF_FALSE(PR_GetCurrentThread() == gSocketThread,
|
|
"not socket thread");
|
|
|
|
mCloseTimer = nullptr;
|
|
if (mStopped || mServerClosed) /* no longer relevant */
|
|
return NS_OK;
|
|
|
|
LOG(("WebSocketChannel:: Expecting Server Close - Timed Out\n"));
|
|
AbortSession(NS_ERROR_NET_TIMEOUT);
|
|
} else if (timer == mOpenTimer) {
|
|
NS_ABORT_IF_FALSE(!mGotUpgradeOK,
|
|
"Open Timer after open complete");
|
|
NS_ABORT_IF_FALSE(NS_IsMainThread(), "not main thread");
|
|
|
|
mOpenTimer = nullptr;
|
|
LOG(("WebSocketChannel:: Connection Timed Out\n"));
|
|
if (mStopped || mServerClosed) /* no longer relevant */
|
|
return NS_OK;
|
|
|
|
AbortSession(NS_ERROR_NET_TIMEOUT);
|
|
} else if (timer == mReconnectDelayTimer) {
|
|
NS_ABORT_IF_FALSE(mConnecting == CONNECTING_DELAYED,
|
|
"woke up from delay w/o being delayed?");
|
|
|
|
mReconnectDelayTimer = nullptr;
|
|
LOG(("WebSocketChannel: connecting [this=%p] after reconnect delay", this));
|
|
BeginOpen();
|
|
} else if (timer == mPingTimer) {
|
|
NS_ABORT_IF_FALSE(PR_GetCurrentThread() == gSocketThread,
|
|
"not socket thread");
|
|
|
|
if (mClientClosed || mServerClosed || mRequestedClose) {
|
|
// no point in worrying about ping now
|
|
mPingTimer = nullptr;
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!mPingOutstanding) {
|
|
LOG(("nsWebSocketChannel:: Generating Ping\n"));
|
|
mPingOutstanding = 1;
|
|
GeneratePing();
|
|
mPingTimer->InitWithCallback(this, mPingResponseTimeout,
|
|
nsITimer::TYPE_ONE_SHOT);
|
|
} else {
|
|
LOG(("nsWebSocketChannel:: Timed out Ping\n"));
|
|
mPingTimer = nullptr;
|
|
AbortSession(NS_ERROR_NET_TIMEOUT);
|
|
}
|
|
} else if (timer == mLingeringCloseTimer) {
|
|
LOG(("WebSocketChannel:: Lingering Close Timer"));
|
|
CleanupConnection();
|
|
} else {
|
|
NS_ABORT_IF_FALSE(0, "Unknown Timer");
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// nsIWebSocketChannel
|
|
|
|
NS_IMETHODIMP
|
|
WebSocketChannel::GetSecurityInfo(nsISupports **aSecurityInfo)
|
|
{
|
|
LOG(("WebSocketChannel::GetSecurityInfo() %p\n", this));
|
|
NS_ABORT_IF_FALSE(NS_IsMainThread(), "not main thread");
|
|
|
|
if (mTransport) {
|
|
if (NS_FAILED(mTransport->GetSecurityInfo(aSecurityInfo)))
|
|
*aSecurityInfo = nullptr;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
WebSocketChannel::AsyncOpen(nsIURI *aURI,
|
|
const nsACString &aOrigin,
|
|
nsIWebSocketListener *aListener,
|
|
nsISupports *aContext)
|
|
{
|
|
LOG(("WebSocketChannel::AsyncOpen() %p\n", this));
|
|
|
|
NS_ABORT_IF_FALSE(NS_IsMainThread(), "not main thread");
|
|
|
|
if (!aURI || !aListener) {
|
|
LOG(("WebSocketChannel::AsyncOpen() Uri or Listener null"));
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
if (mListener || mWasOpened)
|
|
return NS_ERROR_ALREADY_OPENED;
|
|
|
|
nsresult rv;
|
|
|
|
mSocketThread = do_GetService(NS_SOCKETTRANSPORTSERVICE_CONTRACTID, &rv);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("unable to continue without socket transport service");
|
|
return rv;
|
|
}
|
|
|
|
mRandomGenerator =
|
|
do_GetService("@mozilla.org/security/random-generator;1", &rv);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("unable to continue without random number generator");
|
|
return rv;
|
|
}
|
|
|
|
nsCOMPtr<nsIPrefBranch> prefService;
|
|
prefService = do_GetService(NS_PREFSERVICE_CONTRACTID);
|
|
|
|
if (prefService) {
|
|
int32_t intpref;
|
|
bool boolpref;
|
|
rv = prefService->GetIntPref("network.websocket.max-message-size",
|
|
&intpref);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
mMaxMessageSize = clamped(intpref, 1024, INT32_MAX);
|
|
}
|
|
rv = prefService->GetIntPref("network.websocket.timeout.close", &intpref);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
mCloseTimeout = clamped(intpref, 1, 1800) * 1000;
|
|
}
|
|
rv = prefService->GetIntPref("network.websocket.timeout.open", &intpref);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
mOpenTimeout = clamped(intpref, 1, 1800) * 1000;
|
|
}
|
|
rv = prefService->GetIntPref("network.websocket.timeout.ping.request",
|
|
&intpref);
|
|
if (NS_SUCCEEDED(rv) && !mClientSetPingInterval) {
|
|
mPingInterval = clamped(intpref, 0, 86400) * 1000;
|
|
}
|
|
rv = prefService->GetIntPref("network.websocket.timeout.ping.response",
|
|
&intpref);
|
|
if (NS_SUCCEEDED(rv) && !mClientSetPingTimeout) {
|
|
mPingResponseTimeout = clamped(intpref, 1, 3600) * 1000;
|
|
}
|
|
rv = prefService->GetBoolPref("network.websocket.extensions.stream-deflate",
|
|
&boolpref);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
mAllowCompression = boolpref ? 1 : 0;
|
|
}
|
|
rv = prefService->GetBoolPref("network.websocket.auto-follow-http-redirects",
|
|
&boolpref);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
mAutoFollowRedirects = boolpref ? 1 : 0;
|
|
}
|
|
rv = prefService->GetIntPref
|
|
("network.websocket.max-connections", &intpref);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
mMaxConcurrentConnections = clamped(intpref, 1, 0xffff);
|
|
}
|
|
}
|
|
|
|
if (sWebSocketAdmissions)
|
|
LOG(("WebSocketChannel::AsyncOpen %p sessionCount=%d max=%d\n", this,
|
|
sWebSocketAdmissions->SessionCount(), mMaxConcurrentConnections));
|
|
|
|
if (sWebSocketAdmissions &&
|
|
sWebSocketAdmissions->SessionCount() >= mMaxConcurrentConnections)
|
|
{
|
|
LOG(("WebSocketChannel: max concurrency %d exceeded (%d)",
|
|
mMaxConcurrentConnections,
|
|
sWebSocketAdmissions->SessionCount()));
|
|
|
|
// WebSocket connections are expected to be long lived, so return
|
|
// an error here instead of queueing
|
|
return NS_ERROR_SOCKET_CREATE_FAILED;
|
|
}
|
|
|
|
mOriginalURI = aURI;
|
|
mURI = mOriginalURI;
|
|
mOrigin = aOrigin;
|
|
|
|
nsCOMPtr<nsIURI> localURI;
|
|
nsCOMPtr<nsIChannel> localChannel;
|
|
|
|
mURI->Clone(getter_AddRefs(localURI));
|
|
if (mEncrypted)
|
|
rv = localURI->SetScheme(NS_LITERAL_CSTRING("https"));
|
|
else
|
|
rv = localURI->SetScheme(NS_LITERAL_CSTRING("http"));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsCOMPtr<nsIIOService> ioService;
|
|
ioService = do_GetService(NS_IOSERVICE_CONTRACTID, &rv);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("unable to continue without io service");
|
|
return rv;
|
|
}
|
|
|
|
nsCOMPtr<nsIIOService2> io2 = do_QueryInterface(ioService, &rv);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("WebSocketChannel: unable to continue without ioservice2");
|
|
return rv;
|
|
}
|
|
|
|
rv = io2->NewChannelFromURIWithProxyFlags(
|
|
localURI,
|
|
mURI,
|
|
nsIProtocolProxyService::RESOLVE_PREFER_HTTPS_PROXY |
|
|
nsIProtocolProxyService::RESOLVE_ALWAYS_TUNNEL,
|
|
getter_AddRefs(localChannel));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// Pass most GetInterface() requests through to our instantiator, but handle
|
|
// nsIChannelEventSink in this object in order to deal with redirects
|
|
localChannel->SetNotificationCallbacks(this);
|
|
|
|
mChannel = do_QueryInterface(localChannel, &rv);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
mHttpChannel = do_QueryInterface(localChannel, &rv);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
rv = SetupRequest();
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
|
|
if (mConnectionLogService) {
|
|
nsAutoCString host;
|
|
rv = mURI->GetHostPort(host);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
mConnectionLogService->AddHost(host, mSerial, BaseWebSocketChannel::mEncrypted);
|
|
}
|
|
}
|
|
|
|
rv = ApplyForAdmission();
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
|
|
// Only set these if the open was successful:
|
|
//
|
|
mWasOpened = 1;
|
|
mListener = aListener;
|
|
mContext = aContext;
|
|
IncrementSessionCount();
|
|
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
WebSocketChannel::Close(uint16_t code, const nsACString & reason)
|
|
{
|
|
LOG(("WebSocketChannel::Close() %p\n", this));
|
|
NS_ABORT_IF_FALSE(NS_IsMainThread(), "not main thread");
|
|
|
|
if (mRequestedClose) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// The API requires the UTF-8 string to be 123 or less bytes
|
|
if (reason.Length() > 123)
|
|
return NS_ERROR_ILLEGAL_VALUE;
|
|
|
|
mRequestedClose = 1;
|
|
mScriptCloseReason = reason;
|
|
mScriptCloseCode = code;
|
|
|
|
if (!mTransport) {
|
|
nsresult rv;
|
|
if (code == CLOSE_GOING_AWAY) {
|
|
// Not an error: for example, tab has closed or navigated away
|
|
LOG(("WebSocketChannel::Close() GOING_AWAY without transport."));
|
|
rv = NS_OK;
|
|
} else {
|
|
LOG(("WebSocketChannel::Close() without transport - error."));
|
|
rv = NS_ERROR_NOT_CONNECTED;
|
|
}
|
|
StopSession(rv);
|
|
return rv;
|
|
}
|
|
|
|
return mSocketThread->Dispatch(
|
|
new OutboundEnqueuer(this, new OutboundMessage(kMsgTypeFin, nullptr)),
|
|
nsIEventTarget::DISPATCH_NORMAL);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
WebSocketChannel::SendMsg(const nsACString &aMsg)
|
|
{
|
|
LOG(("WebSocketChannel::SendMsg() %p\n", this));
|
|
|
|
return SendMsgCommon(&aMsg, false, aMsg.Length());
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
WebSocketChannel::SendBinaryMsg(const nsACString &aMsg)
|
|
{
|
|
LOG(("WebSocketChannel::SendBinaryMsg() %p len=%d\n", this, aMsg.Length()));
|
|
return SendMsgCommon(&aMsg, true, aMsg.Length());
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
WebSocketChannel::SendBinaryStream(nsIInputStream *aStream, uint32_t aLength)
|
|
{
|
|
LOG(("WebSocketChannel::SendBinaryStream() %p\n", this));
|
|
|
|
return SendMsgCommon(nullptr, true, aLength, aStream);
|
|
}
|
|
|
|
nsresult
|
|
WebSocketChannel::SendMsgCommon(const nsACString *aMsg, bool aIsBinary,
|
|
uint32_t aLength, nsIInputStream *aStream)
|
|
{
|
|
NS_ABORT_IF_FALSE(NS_IsMainThread(), "not main thread");
|
|
|
|
if (mRequestedClose) {
|
|
LOG(("WebSocketChannel:: Error: send when closed\n"));
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
if (mStopped) {
|
|
LOG(("WebSocketChannel:: Error: send when stopped\n"));
|
|
return NS_ERROR_NOT_CONNECTED;
|
|
}
|
|
|
|
NS_ABORT_IF_FALSE(mMaxMessageSize >= 0, "max message size negative");
|
|
if (aLength > static_cast<uint32_t>(mMaxMessageSize)) {
|
|
LOG(("WebSocketChannel:: Error: message too big\n"));
|
|
return NS_ERROR_FILE_TOO_BIG;
|
|
}
|
|
|
|
nsresult rv;
|
|
if (mConnectionLogService) {
|
|
nsAutoCString host;
|
|
rv = mURI->GetHostPort(host);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
mConnectionLogService->NewMsgSent(host, mSerial, aLength);
|
|
LOG(("Added new msg sent for %s",host.get()));
|
|
}
|
|
}
|
|
|
|
return mSocketThread->Dispatch(
|
|
aStream ? new OutboundEnqueuer(this, new OutboundMessage(aStream, aLength))
|
|
: new OutboundEnqueuer(this,
|
|
new OutboundMessage(aIsBinary ? kMsgTypeBinaryString
|
|
: kMsgTypeString,
|
|
new nsCString(*aMsg))),
|
|
nsIEventTarget::DISPATCH_NORMAL);
|
|
}
|
|
|
|
// nsIHttpUpgradeListener
|
|
|
|
NS_IMETHODIMP
|
|
WebSocketChannel::OnTransportAvailable(nsISocketTransport *aTransport,
|
|
nsIAsyncInputStream *aSocketIn,
|
|
nsIAsyncOutputStream *aSocketOut)
|
|
{
|
|
if (!NS_IsMainThread()) {
|
|
return NS_DispatchToMainThread(new CallOnTransportAvailable(this,
|
|
aTransport,
|
|
aSocketIn,
|
|
aSocketOut));
|
|
}
|
|
|
|
LOG(("WebSocketChannel::OnTransportAvailable %p [%p %p %p] rcvdonstart=%d\n",
|
|
this, aTransport, aSocketIn, aSocketOut, mGotUpgradeOK));
|
|
|
|
NS_ABORT_IF_FALSE(NS_IsMainThread(), "not main thread");
|
|
NS_ABORT_IF_FALSE(!mRecvdHttpUpgradeTransport, "OTA duplicated");
|
|
NS_ABORT_IF_FALSE(aSocketIn, "OTA with invalid socketIn");
|
|
|
|
mTransport = aTransport;
|
|
mSocketIn = aSocketIn;
|
|
mSocketOut = aSocketOut;
|
|
|
|
nsresult rv;
|
|
rv = mTransport->SetEventSink(nullptr, nullptr);
|
|
if (NS_FAILED(rv)) return rv;
|
|
rv = mTransport->SetSecurityCallbacks(this);
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
mRecvdHttpUpgradeTransport = 1;
|
|
if (mGotUpgradeOK)
|
|
return StartWebsocketData();
|
|
return NS_OK;
|
|
}
|
|
|
|
// nsIRequestObserver (from nsIStreamListener)
|
|
|
|
NS_IMETHODIMP
|
|
WebSocketChannel::OnStartRequest(nsIRequest *aRequest,
|
|
nsISupports *aContext)
|
|
{
|
|
LOG(("WebSocketChannel::OnStartRequest(): %p [%p %p] recvdhttpupgrade=%d\n",
|
|
this, aRequest, aContext, mRecvdHttpUpgradeTransport));
|
|
NS_ABORT_IF_FALSE(NS_IsMainThread(), "not main thread");
|
|
NS_ABORT_IF_FALSE(!mGotUpgradeOK, "OTA duplicated");
|
|
|
|
if (mOpenTimer) {
|
|
mOpenTimer->Cancel();
|
|
mOpenTimer = nullptr;
|
|
}
|
|
|
|
if (mStopped) {
|
|
LOG(("WebSocketChannel::OnStartRequest: Channel Already Done\n"));
|
|
AbortSession(NS_ERROR_CONNECTION_REFUSED);
|
|
return NS_ERROR_CONNECTION_REFUSED;
|
|
}
|
|
|
|
nsresult rv;
|
|
uint32_t status;
|
|
char *val, *token;
|
|
|
|
rv = mHttpChannel->GetResponseStatus(&status);
|
|
if (NS_FAILED(rv)) {
|
|
LOG(("WebSocketChannel::OnStartRequest: No HTTP Response\n"));
|
|
AbortSession(NS_ERROR_CONNECTION_REFUSED);
|
|
return NS_ERROR_CONNECTION_REFUSED;
|
|
}
|
|
|
|
LOG(("WebSocketChannel::OnStartRequest: HTTP status %d\n", status));
|
|
if (status != 101) {
|
|
AbortSession(NS_ERROR_CONNECTION_REFUSED);
|
|
return NS_ERROR_CONNECTION_REFUSED;
|
|
}
|
|
|
|
nsAutoCString respUpgrade;
|
|
rv = mHttpChannel->GetResponseHeader(
|
|
NS_LITERAL_CSTRING("Upgrade"), respUpgrade);
|
|
|
|
if (NS_SUCCEEDED(rv)) {
|
|
rv = NS_ERROR_ILLEGAL_VALUE;
|
|
if (!respUpgrade.IsEmpty()) {
|
|
val = respUpgrade.BeginWriting();
|
|
while ((token = nsCRT::strtok(val, ", \t", &val))) {
|
|
if (PL_strcasecmp(token, "Websocket") == 0) {
|
|
rv = NS_OK;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (NS_FAILED(rv)) {
|
|
LOG(("WebSocketChannel::OnStartRequest: "
|
|
"HTTP response header Upgrade: websocket not found\n"));
|
|
AbortSession(NS_ERROR_ILLEGAL_VALUE);
|
|
return rv;
|
|
}
|
|
|
|
nsAutoCString respConnection;
|
|
rv = mHttpChannel->GetResponseHeader(
|
|
NS_LITERAL_CSTRING("Connection"), respConnection);
|
|
|
|
if (NS_SUCCEEDED(rv)) {
|
|
rv = NS_ERROR_ILLEGAL_VALUE;
|
|
if (!respConnection.IsEmpty()) {
|
|
val = respConnection.BeginWriting();
|
|
while ((token = nsCRT::strtok(val, ", \t", &val))) {
|
|
if (PL_strcasecmp(token, "Upgrade") == 0) {
|
|
rv = NS_OK;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (NS_FAILED(rv)) {
|
|
LOG(("WebSocketChannel::OnStartRequest: "
|
|
"HTTP response header 'Connection: Upgrade' not found\n"));
|
|
AbortSession(NS_ERROR_ILLEGAL_VALUE);
|
|
return rv;
|
|
}
|
|
|
|
nsAutoCString respAccept;
|
|
rv = mHttpChannel->GetResponseHeader(
|
|
NS_LITERAL_CSTRING("Sec-WebSocket-Accept"),
|
|
respAccept);
|
|
|
|
if (NS_FAILED(rv) ||
|
|
respAccept.IsEmpty() || !respAccept.Equals(mHashedSecret)) {
|
|
LOG(("WebSocketChannel::OnStartRequest: "
|
|
"HTTP response header Sec-WebSocket-Accept check failed\n"));
|
|
LOG(("WebSocketChannel::OnStartRequest: Expected %s received %s\n",
|
|
mHashedSecret.get(), respAccept.get()));
|
|
AbortSession(NS_ERROR_ILLEGAL_VALUE);
|
|
return NS_ERROR_ILLEGAL_VALUE;
|
|
}
|
|
|
|
// If we sent a sub protocol header, verify the response matches
|
|
// If it does not, set mProtocol to "" so the protocol attribute
|
|
// of the WebSocket JS object reflects that
|
|
if (!mProtocol.IsEmpty()) {
|
|
nsAutoCString respProtocol;
|
|
rv = mHttpChannel->GetResponseHeader(
|
|
NS_LITERAL_CSTRING("Sec-WebSocket-Protocol"),
|
|
respProtocol);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
rv = NS_ERROR_ILLEGAL_VALUE;
|
|
val = mProtocol.BeginWriting();
|
|
while ((token = nsCRT::strtok(val, ", \t", &val))) {
|
|
if (PL_strcasecmp(token, respProtocol.get()) == 0) {
|
|
rv = NS_OK;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (NS_SUCCEEDED(rv)) {
|
|
LOG(("WebsocketChannel::OnStartRequest: subprotocol %s confirmed",
|
|
respProtocol.get()));
|
|
mProtocol = respProtocol;
|
|
} else {
|
|
LOG(("WebsocketChannel::OnStartRequest: "
|
|
"subprotocol [%s] not found - %s returned",
|
|
mProtocol.get(), respProtocol.get()));
|
|
mProtocol.Truncate();
|
|
}
|
|
} else {
|
|
LOG(("WebsocketChannel::OnStartRequest "
|
|
"subprotocol [%s] not found - none returned",
|
|
mProtocol.get()));
|
|
mProtocol.Truncate();
|
|
}
|
|
}
|
|
|
|
rv = HandleExtensions();
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
|
|
mGotUpgradeOK = 1;
|
|
if (mRecvdHttpUpgradeTransport)
|
|
return StartWebsocketData();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
WebSocketChannel::OnStopRequest(nsIRequest *aRequest,
|
|
nsISupports *aContext,
|
|
nsresult aStatusCode)
|
|
{
|
|
LOG(("WebSocketChannel::OnStopRequest() %p [%p %p %x]\n",
|
|
this, aRequest, aContext, aStatusCode));
|
|
NS_ABORT_IF_FALSE(NS_IsMainThread(), "not main thread");
|
|
|
|
ReportConnectionTelemetry();
|
|
|
|
// This is the end of the HTTP upgrade transaction, the
|
|
// upgraded streams live on
|
|
|
|
mChannel = nullptr;
|
|
mHttpChannel = nullptr;
|
|
mLoadGroup = nullptr;
|
|
mCallbacks = nullptr;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// nsIInputStreamCallback
|
|
|
|
NS_IMETHODIMP
|
|
WebSocketChannel::OnInputStreamReady(nsIAsyncInputStream *aStream)
|
|
{
|
|
LOG(("WebSocketChannel::OnInputStreamReady() %p\n", this));
|
|
NS_ABORT_IF_FALSE(PR_GetCurrentThread() == gSocketThread, "not socket thread");
|
|
|
|
if (!mSocketIn) // did we we clean up the socket after scheduling InputReady?
|
|
return NS_OK;
|
|
|
|
nsRefPtr<nsIStreamListener> deleteProtector1(mInflateReader);
|
|
nsRefPtr<nsIStringInputStream> deleteProtector2(mInflateStream);
|
|
|
|
// this is after the http upgrade - so we are speaking websockets
|
|
char buffer[2048];
|
|
uint32_t count;
|
|
nsresult rv;
|
|
|
|
do {
|
|
rv = mSocketIn->Read((char *)buffer, 2048, &count);
|
|
LOG(("WebSocketChannel::OnInputStreamReady: read %u rv %x\n", count, rv));
|
|
|
|
if (rv == NS_BASE_STREAM_WOULD_BLOCK) {
|
|
mSocketIn->AsyncWait(this, 0, 0, mSocketThread);
|
|
return NS_OK;
|
|
}
|
|
|
|
if (NS_FAILED(rv)) {
|
|
mTCPClosed = true;
|
|
AbortSession(rv);
|
|
return rv;
|
|
}
|
|
|
|
if (count == 0) {
|
|
mTCPClosed = true;
|
|
AbortSession(NS_BASE_STREAM_CLOSED);
|
|
return NS_OK;
|
|
}
|
|
|
|
if (mStopped) {
|
|
NS_ABORT_IF_FALSE(mLingeringCloseTimer,
|
|
"OnInputReady after stop without linger");
|
|
continue;
|
|
}
|
|
|
|
if (mInflateReader) {
|
|
mInflateStream->ShareData(buffer, count);
|
|
rv = mInflateReader->OnDataAvailable(nullptr, mSocketIn, mInflateStream,
|
|
0, count);
|
|
} else {
|
|
rv = ProcessInput((uint8_t *)buffer, count);
|
|
}
|
|
|
|
if (NS_FAILED(rv)) {
|
|
AbortSession(rv);
|
|
return rv;
|
|
}
|
|
} while (NS_SUCCEEDED(rv) && mSocketIn);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
// nsIOutputStreamCallback
|
|
|
|
NS_IMETHODIMP
|
|
WebSocketChannel::OnOutputStreamReady(nsIAsyncOutputStream *aStream)
|
|
{
|
|
LOG(("WebSocketChannel::OnOutputStreamReady() %p\n", this));
|
|
NS_ABORT_IF_FALSE(PR_GetCurrentThread() == gSocketThread, "not socket thread");
|
|
nsresult rv;
|
|
|
|
if (!mCurrentOut)
|
|
PrimeNewOutgoingMessage();
|
|
|
|
while (mCurrentOut && mSocketOut) {
|
|
const char *sndBuf;
|
|
uint32_t toSend;
|
|
uint32_t amtSent;
|
|
|
|
if (mHdrOut) {
|
|
sndBuf = (const char *)mHdrOut;
|
|
toSend = mHdrOutToSend;
|
|
LOG(("WebSocketChannel::OnOutputStreamReady: "
|
|
"Try to send %u of hdr/copybreak\n", toSend));
|
|
} else {
|
|
sndBuf = (char *) mCurrentOut->BeginReading() + mCurrentOutSent;
|
|
toSend = mCurrentOut->Length() - mCurrentOutSent;
|
|
if (toSend > 0) {
|
|
LOG(("WebSocketChannel::OnOutputStreamReady: "
|
|
"Try to send %u of data\n", toSend));
|
|
}
|
|
}
|
|
|
|
if (toSend == 0) {
|
|
amtSent = 0;
|
|
} else {
|
|
rv = mSocketOut->Write(sndBuf, toSend, &amtSent);
|
|
LOG(("WebSocketChannel::OnOutputStreamReady: write %u rv %x\n",
|
|
amtSent, rv));
|
|
|
|
if (rv == NS_BASE_STREAM_WOULD_BLOCK) {
|
|
mSocketOut->AsyncWait(this, 0, 0, nullptr);
|
|
return NS_OK;
|
|
}
|
|
|
|
if (NS_FAILED(rv)) {
|
|
AbortSession(rv);
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
if (mHdrOut) {
|
|
if (amtSent == toSend) {
|
|
mHdrOut = nullptr;
|
|
mHdrOutToSend = 0;
|
|
} else {
|
|
mHdrOut += amtSent;
|
|
mHdrOutToSend -= amtSent;
|
|
}
|
|
} else {
|
|
if (amtSent == toSend) {
|
|
if (!mStopped) {
|
|
NS_DispatchToMainThread(new CallAcknowledge(this,
|
|
mCurrentOut->Length()));
|
|
}
|
|
DeleteCurrentOutGoingMessage();
|
|
PrimeNewOutgoingMessage();
|
|
} else {
|
|
mCurrentOutSent += amtSent;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (mReleaseOnTransmit)
|
|
ReleaseSession();
|
|
return NS_OK;
|
|
}
|
|
|
|
// nsIStreamListener
|
|
|
|
NS_IMETHODIMP
|
|
WebSocketChannel::OnDataAvailable(nsIRequest *aRequest,
|
|
nsISupports *aContext,
|
|
nsIInputStream *aInputStream,
|
|
uint64_t aOffset,
|
|
uint32_t aCount)
|
|
{
|
|
LOG(("WebSocketChannel::OnDataAvailable() %p [%p %p %p %llu %u]\n",
|
|
this, aRequest, aContext, aInputStream, aOffset, aCount));
|
|
|
|
if (aContext == mSocketIn) {
|
|
// This is the deflate decoder
|
|
|
|
LOG(("WebSocketChannel::OnDataAvailable: Deflate Data %u\n",
|
|
aCount));
|
|
|
|
uint8_t buffer[2048];
|
|
uint32_t maxRead;
|
|
uint32_t count;
|
|
nsresult rv = NS_OK; // aCount always > 0, so this just avoids warning
|
|
|
|
while (aCount > 0) {
|
|
if (mStopped)
|
|
return NS_BASE_STREAM_CLOSED;
|
|
|
|
maxRead = std::min(2048U, aCount);
|
|
rv = aInputStream->Read((char *)buffer, maxRead, &count);
|
|
LOG(("WebSocketChannel::OnDataAvailable: InflateRead read %u rv %x\n",
|
|
count, rv));
|
|
if (NS_FAILED(rv) || count == 0) {
|
|
AbortSession(NS_ERROR_UNEXPECTED);
|
|
break;
|
|
}
|
|
|
|
aCount -= count;
|
|
rv = ProcessInput(buffer, count);
|
|
if (NS_FAILED(rv)) {
|
|
AbortSession(rv);
|
|
break;
|
|
}
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
if (aContext == mSocketOut) {
|
|
// This is the deflate encoder
|
|
|
|
uint32_t maxRead;
|
|
uint32_t count;
|
|
nsresult rv;
|
|
|
|
while (aCount > 0) {
|
|
if (mStopped)
|
|
return NS_BASE_STREAM_CLOSED;
|
|
|
|
maxRead = std::min(2048U, aCount);
|
|
EnsureHdrOut(mHdrOutToSend + aCount);
|
|
rv = aInputStream->Read((char *)mHdrOut + mHdrOutToSend, maxRead, &count);
|
|
LOG(("WebSocketChannel::OnDataAvailable: DeflateWrite read %u rv %x\n",
|
|
count, rv));
|
|
if (NS_FAILED(rv) || count == 0) {
|
|
AbortSession(rv);
|
|
break;
|
|
}
|
|
|
|
mHdrOutToSend += count;
|
|
aCount -= count;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
// Otherwise, this is the HTTP OnDataAvailable Method, which means
|
|
// this is http data in response to the upgrade request and
|
|
// there should be no http response body if the upgrade succeeded
|
|
|
|
// This generally should be caught by a non 101 response code in
|
|
// OnStartRequest().. so we can ignore the data here
|
|
|
|
LOG(("WebSocketChannel::OnDataAvailable: HTTP data unexpected len>=%u\n",
|
|
aCount));
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
} // namespace mozilla::net
|
|
} // namespace mozilla
|