mirror of
https://github.com/classilla/tenfourfox.git
synced 2024-09-10 11:54:40 +00:00
1479 lines
47 KiB
C++
1479 lines
47 KiB
C++
// vim:set sw=4 sts=4 et cin:
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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 "nsSocketTransportService2.h"
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#if !defined(MOZILLA_XPCOMRT_API)
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#include "nsSocketTransport2.h"
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#include "NetworkActivityMonitor.h"
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#include "mozilla/Preferences.h"
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#endif // !defined(MOZILLA_XPCOMRT_API)
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#include "nsASocketHandler.h"
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#include "nsError.h"
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#include "prnetdb.h"
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#include "prerror.h"
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#include "nsIPrefService.h"
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#include "nsIPrefBranch.h"
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#include "nsServiceManagerUtils.h"
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#include "nsIObserverService.h"
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#include "mozilla/Atomics.h"
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#include "mozilla/Services.h"
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#include "mozilla/Likely.h"
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#include "mozilla/PublicSSL.h"
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#include "mozilla/ChaosMode.h"
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#include "mozilla/PodOperations.h"
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#include "mozilla/Telemetry.h"
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#include "nsThreadUtils.h"
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#include "nsIFile.h"
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using namespace mozilla;
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using namespace mozilla::net;
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LazyLogModule gSocketTransportLog("nsSocketTransport");
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LazyLogModule gUDPSocketLog("UDPSocket");
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nsSocketTransportService *gSocketTransportService = nullptr;
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Atomic<PRThread*, Relaxed> gSocketThread;
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#define SEND_BUFFER_PREF "network.tcp.sendbuffer"
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#define KEEPALIVE_ENABLED_PREF "network.tcp.keepalive.enabled"
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#define KEEPALIVE_IDLE_TIME_PREF "network.tcp.keepalive.idle_time"
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#define KEEPALIVE_RETRY_INTERVAL_PREF "network.tcp.keepalive.retry_interval"
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#define KEEPALIVE_PROBE_COUNT_PREF "network.tcp.keepalive.probe_count"
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#define SOCKET_LIMIT_TARGET 550U
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#define SOCKET_LIMIT_MIN 50U
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#define BLIP_INTERVAL_PREF "network.activity.blipIntervalMilliseconds"
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#define MAX_TIME_BETWEEN_TWO_POLLS "network.sts.max_time_for_events_between_two_polls"
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#define TELEMETRY_PREF "toolkit.telemetry.enabled"
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uint32_t nsSocketTransportService::gMaxCount;
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PRCallOnceType nsSocketTransportService::gMaxCountInitOnce;
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class DebugMutexAutoLock
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{
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public:
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explicit DebugMutexAutoLock(Mutex& mutex);
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~DebugMutexAutoLock();
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private:
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Mutex *mLock;
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static Atomic<PRThread *, Relaxed> sDebugOwningThread;
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};
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Atomic<PRThread *, Relaxed> DebugMutexAutoLock::sDebugOwningThread;
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DebugMutexAutoLock::DebugMutexAutoLock(Mutex& mutex)
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:mLock(&mutex)
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{
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PRThread *currentThread = PR_GetCurrentThread();
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MOZ_DIAGNOSTIC_ASSERT(sDebugOwningThread != currentThread);
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SOCKET_LOG(("Acquiring lock on thread %p", currentThread));
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mLock->Lock();
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sDebugOwningThread = currentThread;
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SOCKET_LOG(("Acquired lock on thread %p", currentThread));
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}
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DebugMutexAutoLock::~DebugMutexAutoLock()
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{
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sDebugOwningThread = nullptr;
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mLock->Unlock();
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mLock = nullptr;
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SOCKET_LOG(("Released lock on thread %p", PR_GetCurrentThread()));
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}
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//-----------------------------------------------------------------------------
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// ctor/dtor (called on the main/UI thread by the service manager)
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nsSocketTransportService::nsSocketTransportService()
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: mThread(nullptr)
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, mThreadEvent(nullptr)
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, mAutodialEnabled(false)
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, mLock("nsSocketTransportService::mLock")
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, mInitialized(false)
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, mShuttingDown(false)
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, mOffline(false)
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, mGoingOffline(false)
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, mActiveListSize(SOCKET_LIMIT_MIN)
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, mIdleListSize(SOCKET_LIMIT_MIN)
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, mActiveCount(0)
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, mIdleCount(0)
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, mSentBytesCount(0)
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, mReceivedBytesCount(0)
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, mEventQueueLock("nsSocketTransportService::mEventQueueLock")
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, mPendingSocketQ(mEventQueueLock)
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, mSendBufferSize(0)
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, mKeepaliveIdleTimeS(600)
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, mKeepaliveRetryIntervalS(1)
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, mKeepaliveProbeCount(kDefaultTCPKeepCount)
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, mKeepaliveEnabledPref(false)
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, mServingPendingQueue(false)
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, mMaxTimePerPollIter(100)
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, mTelemetryEnabledPref(false)
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, mProbedMaxCount(false)
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{
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NS_ASSERTION(NS_IsMainThread(), "wrong thread");
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PR_CallOnce(&gMaxCountInitOnce, DiscoverMaxCount);
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mActiveList = (SocketContext *)
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moz_xmalloc(sizeof(SocketContext) * mActiveListSize);
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mIdleList = (SocketContext *)
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moz_xmalloc(sizeof(SocketContext) * mIdleListSize);
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mPollList = (PRPollDesc *)
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moz_xmalloc(sizeof(PRPollDesc) * (mActiveListSize + 1));
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NS_ASSERTION(!gSocketTransportService, "must not instantiate twice");
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gSocketTransportService = this;
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}
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nsSocketTransportService::~nsSocketTransportService()
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{
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NS_ASSERTION(NS_IsMainThread(), "wrong thread");
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NS_ASSERTION(!mInitialized, "not shutdown properly");
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if (mThreadEvent)
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PR_DestroyPollableEvent(mThreadEvent);
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free(mActiveList);
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free(mIdleList);
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free(mPollList);
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gSocketTransportService = nullptr;
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}
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//-----------------------------------------------------------------------------
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// event queue (any thread)
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already_AddRefed<nsIThread>
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nsSocketTransportService::GetThreadSafely()
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{
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DebugMutexAutoLock lock(mLock);
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nsCOMPtr<nsIThread> result = mThread;
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return result.forget();
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}
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NS_IMETHODIMP
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nsSocketTransportService::DispatchFromScript(nsIRunnable *event, uint32_t flags)
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{
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nsCOMPtr<nsIRunnable> event_ref(event);
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return Dispatch(event_ref.forget(), flags);
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}
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NS_IMETHODIMP
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nsSocketTransportService::Dispatch(already_AddRefed<nsIRunnable>&& event, uint32_t flags)
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{
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nsCOMPtr<nsIRunnable> event_ref(event);
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SOCKET_LOG(("STS dispatch [%p]\n", event_ref.get()));
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nsCOMPtr<nsIThread> thread = GetThreadSafely();
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nsresult rv;
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rv = thread ? thread->Dispatch(event_ref.forget(), flags) : NS_ERROR_NOT_INITIALIZED;
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if (rv == NS_ERROR_UNEXPECTED) {
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// Thread is no longer accepting events. We must have just shut it
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// down on the main thread. Pretend we never saw it.
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rv = NS_ERROR_NOT_INITIALIZED;
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}
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return rv;
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}
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NS_IMETHODIMP
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nsSocketTransportService::IsOnCurrentThread(bool *result)
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{
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nsCOMPtr<nsIThread> thread = GetThreadSafely();
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NS_ENSURE_TRUE(thread, NS_ERROR_NOT_INITIALIZED);
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return thread->IsOnCurrentThread(result);
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}
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//-----------------------------------------------------------------------------
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// socket api (socket thread only)
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NS_IMETHODIMP
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nsSocketTransportService::NotifyWhenCanAttachSocket(nsIRunnable *event)
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{
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SOCKET_LOG(("nsSocketTransportService::NotifyWhenCanAttachSocket\n"));
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NS_ASSERTION(PR_GetCurrentThread() == gSocketThread, "wrong thread");
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if (CanAttachSocket()) {
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return Dispatch(event, NS_DISPATCH_NORMAL);
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}
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{
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MutexAutoLock lock(mEventQueueLock);
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mPendingSocketQ.PutEvent(event, lock);
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsSocketTransportService::AttachSocket(PRFileDesc *fd, nsASocketHandler *handler)
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{
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SOCKET_LOG(("nsSocketTransportService::AttachSocket [handler=%p]\n", handler));
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NS_ASSERTION(PR_GetCurrentThread() == gSocketThread, "wrong thread");
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if (!CanAttachSocket()) {
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return NS_ERROR_NOT_AVAILABLE;
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}
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SocketContext sock;
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sock.mFD = fd;
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sock.mHandler = handler;
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sock.mElapsedTime = 0;
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nsresult rv = AddToIdleList(&sock);
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if (NS_SUCCEEDED(rv))
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NS_ADDREF(handler);
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return rv;
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}
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nsresult
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nsSocketTransportService::DetachSocket(SocketContext *listHead, SocketContext *sock)
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{
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SOCKET_LOG(("nsSocketTransportService::DetachSocket [handler=%p]\n", sock->mHandler));
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MOZ_ASSERT((listHead == mActiveList) || (listHead == mIdleList),
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"DetachSocket invalid head");
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// inform the handler that this socket is going away
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sock->mHandler->OnSocketDetached(sock->mFD);
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mSentBytesCount += sock->mHandler->ByteCountSent();
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mReceivedBytesCount += sock->mHandler->ByteCountReceived();
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// cleanup
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sock->mFD = nullptr;
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NS_RELEASE(sock->mHandler);
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if (listHead == mActiveList)
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RemoveFromPollList(sock);
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else
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RemoveFromIdleList(sock);
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// NOTE: sock is now an invalid pointer
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//
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// notify the first element on the pending socket queue...
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//
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nsCOMPtr<nsIRunnable> event;
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{
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MutexAutoLock lock(mEventQueueLock);
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mPendingSocketQ.GetPendingEvent(getter_AddRefs(event), lock);
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}
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if (event) {
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// move event from pending queue to dispatch queue
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return Dispatch(event, NS_DISPATCH_NORMAL);
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}
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return NS_OK;
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}
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nsresult
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nsSocketTransportService::AddToPollList(SocketContext *sock)
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{
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MOZ_ASSERT(!(static_cast<uint32_t>(sock - mActiveList) < mActiveListSize),
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"AddToPollList Socket Already Active");
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SOCKET_LOG(("nsSocketTransportService::AddToPollList [handler=%p]\n", sock->mHandler));
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if (mActiveCount == mActiveListSize) {
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SOCKET_LOG((" Active List size of %d met\n", mActiveCount));
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if (!GrowActiveList()) {
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NS_ERROR("too many active sockets");
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return NS_ERROR_OUT_OF_MEMORY;
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}
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}
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uint32_t newSocketIndex = mActiveCount;
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if (ChaosMode::isActive(ChaosFeature::NetworkScheduling)) {
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newSocketIndex = ChaosMode::randomUint32LessThan(mActiveCount + 1);
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PodMove(mActiveList + newSocketIndex + 1, mActiveList + newSocketIndex,
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mActiveCount - newSocketIndex);
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PodMove(mPollList + newSocketIndex + 2, mPollList + newSocketIndex + 1,
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mActiveCount - newSocketIndex);
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}
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mActiveList[newSocketIndex] = *sock;
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mActiveCount++;
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mPollList[newSocketIndex + 1].fd = sock->mFD;
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mPollList[newSocketIndex + 1].in_flags = sock->mHandler->mPollFlags;
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mPollList[newSocketIndex + 1].out_flags = 0;
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SOCKET_LOG((" active=%u idle=%u\n", mActiveCount, mIdleCount));
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return NS_OK;
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}
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void
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nsSocketTransportService::RemoveFromPollList(SocketContext *sock)
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{
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SOCKET_LOG(("nsSocketTransportService::RemoveFromPollList [handler=%p]\n", sock->mHandler));
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uint32_t index = sock - mActiveList;
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MOZ_ASSERT(index < mActiveListSize, "invalid index");
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SOCKET_LOG((" index=%u mActiveCount=%u\n", index, mActiveCount));
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if (index != mActiveCount-1) {
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mActiveList[index] = mActiveList[mActiveCount-1];
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mPollList[index+1] = mPollList[mActiveCount];
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}
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mActiveCount--;
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SOCKET_LOG((" active=%u idle=%u\n", mActiveCount, mIdleCount));
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}
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nsresult
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nsSocketTransportService::AddToIdleList(SocketContext *sock)
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{
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MOZ_ASSERT(!(static_cast<uint32_t>(sock - mIdleList) < mIdleListSize),
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"AddToIdlelList Socket Already Idle");
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SOCKET_LOG(("nsSocketTransportService::AddToIdleList [handler=%p]\n", sock->mHandler));
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if (mIdleCount == mIdleListSize) {
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SOCKET_LOG((" Idle List size of %d met\n", mIdleCount));
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if (!GrowIdleList()) {
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NS_ERROR("too many idle sockets");
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return NS_ERROR_OUT_OF_MEMORY;
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}
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}
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mIdleList[mIdleCount] = *sock;
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mIdleCount++;
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SOCKET_LOG((" active=%u idle=%u\n", mActiveCount, mIdleCount));
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return NS_OK;
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}
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void
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nsSocketTransportService::RemoveFromIdleList(SocketContext *sock)
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{
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SOCKET_LOG(("nsSocketTransportService::RemoveFromIdleList [handler=%p]\n", sock->mHandler));
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uint32_t index = sock - mIdleList;
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NS_ASSERTION(index < mIdleListSize, "invalid index in idle list");
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if (index != mIdleCount-1)
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mIdleList[index] = mIdleList[mIdleCount-1];
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mIdleCount--;
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SOCKET_LOG((" active=%u idle=%u\n", mActiveCount, mIdleCount));
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}
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void
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nsSocketTransportService::MoveToIdleList(SocketContext *sock)
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{
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nsresult rv = AddToIdleList(sock);
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if (NS_FAILED(rv))
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DetachSocket(mActiveList, sock);
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else
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RemoveFromPollList(sock);
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}
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void
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nsSocketTransportService::MoveToPollList(SocketContext *sock)
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{
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nsresult rv = AddToPollList(sock);
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if (NS_FAILED(rv))
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DetachSocket(mIdleList, sock);
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else
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RemoveFromIdleList(sock);
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}
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bool
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nsSocketTransportService::GrowActiveList()
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{
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int32_t toAdd = gMaxCount - mActiveListSize;
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if (toAdd > 100)
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toAdd = 100;
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if (toAdd < 1)
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return false;
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mActiveListSize += toAdd;
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mActiveList = (SocketContext *)
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moz_xrealloc(mActiveList, sizeof(SocketContext) * mActiveListSize);
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mPollList = (PRPollDesc *)
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moz_xrealloc(mPollList, sizeof(PRPollDesc) * (mActiveListSize + 1));
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return true;
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}
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bool
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nsSocketTransportService::GrowIdleList()
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{
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int32_t toAdd = gMaxCount - mIdleListSize;
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if (toAdd > 100)
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toAdd = 100;
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if (toAdd < 1)
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return false;
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mIdleListSize += toAdd;
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mIdleList = (SocketContext *)
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moz_xrealloc(mIdleList, sizeof(SocketContext) * mIdleListSize);
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return true;
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}
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PRIntervalTime
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nsSocketTransportService::PollTimeout()
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{
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if (mActiveCount == 0)
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return NS_SOCKET_POLL_TIMEOUT;
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// compute minimum time before any socket timeout expires.
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uint32_t minR = UINT16_MAX;
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for (uint32_t i=0; i<mActiveCount; ++i) {
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const SocketContext &s = mActiveList[i];
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// mPollTimeout could be less than mElapsedTime if setTimeout
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// was called with a value smaller than mElapsedTime.
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uint32_t r = (s.mElapsedTime < s.mHandler->mPollTimeout)
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? s.mHandler->mPollTimeout - s.mElapsedTime
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: 0;
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if (r < minR)
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minR = r;
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}
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// nsASocketHandler defines UINT16_MAX as do not timeout
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if (minR == UINT16_MAX) {
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SOCKET_LOG(("poll timeout: none\n"));
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return NS_SOCKET_POLL_TIMEOUT;
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}
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SOCKET_LOG(("poll timeout: %lu\n", minR));
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return PR_SecondsToInterval(minR);
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}
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int32_t
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nsSocketTransportService::Poll(bool wait, uint32_t *interval,
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TimeDuration *pollDuration)
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{
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PRPollDesc *pollList;
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uint32_t pollCount;
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PRIntervalTime pollTimeout;
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*pollDuration = 0;
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if (mPollList[0].fd) {
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mPollList[0].out_flags = 0;
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pollList = mPollList;
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pollCount = mActiveCount + 1;
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pollTimeout = PollTimeout();
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}
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else {
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// no pollable event, so busy wait...
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pollCount = mActiveCount;
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if (pollCount)
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pollList = &mPollList[1];
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else
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pollList = nullptr;
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pollTimeout = PR_MillisecondsToInterval(25);
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}
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if (!wait)
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pollTimeout = PR_INTERVAL_NO_WAIT;
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PRIntervalTime ts = PR_IntervalNow();
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TimeStamp pollStart;
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if (mTelemetryEnabledPref) {
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pollStart = TimeStamp::NowLoRes();
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}
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SOCKET_LOG((" timeout = %i milliseconds\n",
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PR_IntervalToMilliseconds(pollTimeout)));
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int32_t rv = PR_Poll(pollList, pollCount, pollTimeout);
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PRIntervalTime passedInterval = PR_IntervalNow() - ts;
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if (mTelemetryEnabledPref && !pollStart.IsNull()) {
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*pollDuration = TimeStamp::NowLoRes() - pollStart;
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}
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SOCKET_LOG((" ...returned after %i milliseconds\n",
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PR_IntervalToMilliseconds(passedInterval)));
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*interval = PR_IntervalToSeconds(passedInterval);
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return rv;
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}
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//-----------------------------------------------------------------------------
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// xpcom api
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NS_IMPL_ISUPPORTS(nsSocketTransportService,
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nsISocketTransportService,
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nsIRoutedSocketTransportService,
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nsIEventTarget,
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nsIThreadObserver,
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nsIRunnable,
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nsPISocketTransportService,
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nsIObserver)
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|
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// called from main thread only
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NS_IMETHODIMP
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nsSocketTransportService::Init()
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{
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if (!NS_IsMainThread()) {
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NS_ERROR("wrong thread");
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return NS_ERROR_UNEXPECTED;
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|
}
|
|
|
|
if (mInitialized)
|
|
return NS_OK;
|
|
|
|
if (mShuttingDown)
|
|
return NS_ERROR_UNEXPECTED;
|
|
|
|
if (!mThreadEvent) {
|
|
mThreadEvent = PR_NewPollableEvent();
|
|
//
|
|
// NOTE: per bug 190000, this failure could be caused by Zone-Alarm
|
|
// or similar software.
|
|
//
|
|
// NOTE: per bug 191739, this failure could also be caused by lack
|
|
// of a loopback device on Windows and OS/2 platforms (NSPR creates
|
|
// a loopback socket pair on these platforms to implement a pollable
|
|
// event object). if we can't create a pollable event, then we'll
|
|
// have to "busy wait" to implement the socket event queue :-(
|
|
//
|
|
if (!mThreadEvent) {
|
|
NS_WARNING("running socket transport thread without a pollable event");
|
|
SOCKET_LOG(("running socket transport thread without a pollable event"));
|
|
}
|
|
}
|
|
|
|
nsCOMPtr<nsIThread> thread;
|
|
nsresult rv = NS_NewThread(getter_AddRefs(thread), this);
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
{
|
|
DebugMutexAutoLock lock(mLock);
|
|
// Install our mThread, protecting against concurrent readers
|
|
thread.swap(mThread);
|
|
}
|
|
|
|
nsCOMPtr<nsIPrefBranch> tmpPrefService = do_GetService(NS_PREFSERVICE_CONTRACTID);
|
|
if (tmpPrefService) {
|
|
tmpPrefService->AddObserver(SEND_BUFFER_PREF, this, false);
|
|
tmpPrefService->AddObserver(KEEPALIVE_ENABLED_PREF, this, false);
|
|
tmpPrefService->AddObserver(KEEPALIVE_IDLE_TIME_PREF, this, false);
|
|
tmpPrefService->AddObserver(KEEPALIVE_RETRY_INTERVAL_PREF, this, false);
|
|
tmpPrefService->AddObserver(KEEPALIVE_PROBE_COUNT_PREF, this, false);
|
|
tmpPrefService->AddObserver(MAX_TIME_BETWEEN_TWO_POLLS, this, false);
|
|
tmpPrefService->AddObserver(TELEMETRY_PREF, this, false);
|
|
}
|
|
UpdatePrefs();
|
|
|
|
nsCOMPtr<nsIObserverService> obsSvc = services::GetObserverService();
|
|
if (obsSvc) {
|
|
obsSvc->AddObserver(this, "profile-initial-state", false);
|
|
obsSvc->AddObserver(this, "last-pb-context-exited", false);
|
|
}
|
|
|
|
mInitialized = true;
|
|
return NS_OK;
|
|
}
|
|
|
|
// called from main thread only
|
|
NS_IMETHODIMP
|
|
nsSocketTransportService::Shutdown()
|
|
{
|
|
SOCKET_LOG(("nsSocketTransportService::Shutdown\n"));
|
|
|
|
NS_ENSURE_STATE(NS_IsMainThread());
|
|
|
|
if (!mInitialized)
|
|
return NS_OK;
|
|
|
|
if (mShuttingDown)
|
|
return NS_ERROR_UNEXPECTED;
|
|
|
|
{
|
|
DebugMutexAutoLock lock(mLock);
|
|
|
|
// signal the socket thread to shutdown
|
|
mShuttingDown = true;
|
|
|
|
if (mThreadEvent)
|
|
PR_SetPollableEvent(mThreadEvent);
|
|
// else wait for Poll timeout
|
|
}
|
|
|
|
// join with thread
|
|
mThread->Shutdown();
|
|
{
|
|
DebugMutexAutoLock lock(mLock);
|
|
// Drop our reference to mThread and make sure that any concurrent
|
|
// readers are excluded
|
|
mThread = nullptr;
|
|
}
|
|
|
|
nsCOMPtr<nsIPrefBranch> tmpPrefService = do_GetService(NS_PREFSERVICE_CONTRACTID);
|
|
if (tmpPrefService)
|
|
tmpPrefService->RemoveObserver(SEND_BUFFER_PREF, this);
|
|
|
|
nsCOMPtr<nsIObserverService> obsSvc = services::GetObserverService();
|
|
if (obsSvc) {
|
|
obsSvc->RemoveObserver(this, "profile-initial-state");
|
|
obsSvc->RemoveObserver(this, "last-pb-context-exited");
|
|
}
|
|
|
|
#if !defined(MOZILLA_XPCOMRT_API)
|
|
mozilla::net::NetworkActivityMonitor::Shutdown();
|
|
#endif // !defined(MOZILLA_XPCOMRT_API)
|
|
|
|
mInitialized = false;
|
|
mShuttingDown = false;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSocketTransportService::GetOffline(bool *offline)
|
|
{
|
|
*offline = mOffline;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSocketTransportService::SetOffline(bool offline)
|
|
{
|
|
DebugMutexAutoLock lock(mLock);
|
|
if (!mOffline && offline) {
|
|
// signal the socket thread to go offline, so it will detach sockets
|
|
mGoingOffline = true;
|
|
mOffline = true;
|
|
}
|
|
else if (mOffline && !offline) {
|
|
mOffline = false;
|
|
}
|
|
if (mThreadEvent)
|
|
PR_SetPollableEvent(mThreadEvent);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSocketTransportService::GetKeepaliveIdleTime(int32_t *aKeepaliveIdleTimeS)
|
|
{
|
|
MOZ_ASSERT(aKeepaliveIdleTimeS);
|
|
if (NS_WARN_IF(!aKeepaliveIdleTimeS)) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
*aKeepaliveIdleTimeS = mKeepaliveIdleTimeS;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSocketTransportService::GetKeepaliveRetryInterval(int32_t *aKeepaliveRetryIntervalS)
|
|
{
|
|
MOZ_ASSERT(aKeepaliveRetryIntervalS);
|
|
if (NS_WARN_IF(!aKeepaliveRetryIntervalS)) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
*aKeepaliveRetryIntervalS = mKeepaliveRetryIntervalS;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSocketTransportService::GetKeepaliveProbeCount(int32_t *aKeepaliveProbeCount)
|
|
{
|
|
MOZ_ASSERT(aKeepaliveProbeCount);
|
|
if (NS_WARN_IF(!aKeepaliveProbeCount)) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
*aKeepaliveProbeCount = mKeepaliveProbeCount;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSocketTransportService::CreateTransport(const char **types,
|
|
uint32_t typeCount,
|
|
const nsACString &host,
|
|
int32_t port,
|
|
nsIProxyInfo *proxyInfo,
|
|
nsISocketTransport **result)
|
|
{
|
|
return CreateRoutedTransport(types, typeCount, host, port, NS_LITERAL_CSTRING(""), 0,
|
|
proxyInfo, result);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSocketTransportService::CreateRoutedTransport(const char **types,
|
|
uint32_t typeCount,
|
|
const nsACString &host,
|
|
int32_t port,
|
|
const nsACString &hostRoute,
|
|
int32_t portRoute,
|
|
nsIProxyInfo *proxyInfo,
|
|
nsISocketTransport **result)
|
|
{
|
|
#if defined(MOZILLA_XPCOMRT_API)
|
|
NS_WARNING("nsSocketTransportService::CreateTransport not implemented");
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
#else
|
|
NS_ENSURE_TRUE(mInitialized, NS_ERROR_NOT_INITIALIZED);
|
|
NS_ENSURE_TRUE(port >= 0 && port <= 0xFFFF, NS_ERROR_ILLEGAL_VALUE);
|
|
|
|
RefPtr<nsSocketTransport> trans = new nsSocketTransport();
|
|
nsresult rv = trans->Init(types, typeCount, host, port, hostRoute, portRoute, proxyInfo);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
|
|
trans.forget(result);
|
|
return NS_OK;
|
|
#endif // defined(MOZILLA_XPCOMRT_API)
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSocketTransportService::CreateUnixDomainTransport(nsIFile *aPath,
|
|
nsISocketTransport **result)
|
|
{
|
|
#if defined(MOZILLA_XPCOMRT_API)
|
|
NS_WARNING("nsSocketTransportService::CreateUnixDomainTransport not implemented");
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
#else
|
|
nsresult rv;
|
|
|
|
NS_ENSURE_TRUE(mInitialized, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
nsAutoCString path;
|
|
rv = aPath->GetNativePath(path);
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
|
|
RefPtr<nsSocketTransport> trans = new nsSocketTransport();
|
|
|
|
rv = trans->InitWithFilename(path.get());
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
|
|
trans.forget(result);
|
|
return NS_OK;
|
|
#endif // defined(MOZILLA_XPCOMRT_API)
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSocketTransportService::GetAutodialEnabled(bool *value)
|
|
{
|
|
*value = mAutodialEnabled;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSocketTransportService::SetAutodialEnabled(bool value)
|
|
{
|
|
mAutodialEnabled = value;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSocketTransportService::OnDispatchedEvent(nsIThreadInternal *thread)
|
|
{
|
|
DebugMutexAutoLock lock(mLock);
|
|
if (mThreadEvent)
|
|
PR_SetPollableEvent(mThreadEvent);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSocketTransportService::OnProcessNextEvent(nsIThreadInternal *thread,
|
|
bool mayWait)
|
|
{
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSocketTransportService::AfterProcessNextEvent(nsIThreadInternal* thread,
|
|
bool eventWasProcessed)
|
|
{
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsSocketTransportService::MarkTheLastElementOfPendingQueue()
|
|
{
|
|
mServingPendingQueue = false;
|
|
}
|
|
|
|
#ifdef MOZ_NUWA_PROCESS
|
|
#include "ipc/Nuwa.h"
|
|
#endif
|
|
|
|
NS_IMETHODIMP
|
|
nsSocketTransportService::Run()
|
|
{
|
|
PR_SetCurrentThreadName("Socket Thread");
|
|
|
|
#ifdef MOZ_NUWA_PROCESS
|
|
if (IsNuwaProcess()) {
|
|
NuwaMarkCurrentThread(nullptr, nullptr);
|
|
}
|
|
#endif
|
|
|
|
SOCKET_LOG(("STS thread init\n"));
|
|
|
|
#if !defined(MOZILLA_XPCOMRT_API)
|
|
psm::InitializeSSLServerCertVerificationThreads();
|
|
#endif // !defined(MOZILLA_XPCOMRT_API)
|
|
|
|
gSocketThread = PR_GetCurrentThread();
|
|
|
|
// add thread event to poll list (mThreadEvent may be nullptr)
|
|
mPollList[0].fd = mThreadEvent;
|
|
mPollList[0].in_flags = PR_POLL_READ;
|
|
mPollList[0].out_flags = 0;
|
|
|
|
nsIThread *thread = NS_GetCurrentThread();
|
|
|
|
// hook ourselves up to observe event processing for this thread
|
|
nsCOMPtr<nsIThreadInternal> threadInt = do_QueryInterface(thread);
|
|
threadInt->SetObserver(this);
|
|
|
|
// make sure the pseudo random number generator is seeded on this thread
|
|
srand(static_cast<unsigned>(PR_Now()));
|
|
|
|
// For the calculation of the duration of the last cycle (i.e. the last for-loop
|
|
// iteration before shutdown).
|
|
TimeStamp startOfCycleForLastCycleCalc;
|
|
int numberOfPendingEventsLastCycle;
|
|
|
|
// For measuring of the poll iteration duration without time spent blocked
|
|
// in poll().
|
|
TimeStamp pollCycleStart;
|
|
// Time blocked in poll().
|
|
TimeDuration singlePollDuration;
|
|
|
|
// For calculating the time needed for a new element to run.
|
|
TimeStamp startOfIteration;
|
|
TimeStamp startOfNextIteration;
|
|
int numberOfPendingEvents;
|
|
|
|
// If there is too many pending events queued, we will run some poll()
|
|
// between them and the following variable is cumulative time spent
|
|
// blocking in poll().
|
|
TimeDuration pollDuration;
|
|
|
|
for (;;) {
|
|
bool pendingEvents = false;
|
|
thread->HasPendingEvents(&pendingEvents);
|
|
|
|
numberOfPendingEvents = 0;
|
|
numberOfPendingEventsLastCycle = 0;
|
|
if (mTelemetryEnabledPref) {
|
|
startOfCycleForLastCycleCalc = TimeStamp::NowLoRes();
|
|
startOfNextIteration = TimeStamp::NowLoRes();
|
|
}
|
|
pollDuration = 0;
|
|
|
|
do {
|
|
if (mTelemetryEnabledPref) {
|
|
pollCycleStart = TimeStamp::NowLoRes();
|
|
}
|
|
|
|
// If there are pending events for this thread then
|
|
// DoPollIteration() should service the network without blocking.
|
|
DoPollIteration(!pendingEvents, &singlePollDuration);
|
|
|
|
if (mTelemetryEnabledPref && !pollCycleStart.IsNull()) {
|
|
Telemetry::Accumulate(Telemetry::STS_POLL_BLOCK_TIME,
|
|
singlePollDuration.ToMilliseconds());
|
|
Telemetry::AccumulateTimeDelta(
|
|
Telemetry::STS_POLL_CYCLE,
|
|
pollCycleStart + singlePollDuration,
|
|
TimeStamp::NowLoRes());
|
|
pollDuration += singlePollDuration;
|
|
}
|
|
|
|
// If nothing was pending before the poll, it might be now
|
|
if (!pendingEvents) {
|
|
thread->HasPendingEvents(&pendingEvents);
|
|
}
|
|
|
|
if (pendingEvents) {
|
|
if (!mServingPendingQueue) {
|
|
nsresult rv = Dispatch(NS_NewRunnableMethod(this,
|
|
&nsSocketTransportService::MarkTheLastElementOfPendingQueue),
|
|
nsIEventTarget::DISPATCH_NORMAL);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("Could not dispatch a new event on the "
|
|
"socket thread.");
|
|
} else {
|
|
mServingPendingQueue = true;
|
|
}
|
|
|
|
if (mTelemetryEnabledPref) {
|
|
startOfIteration = startOfNextIteration;
|
|
// Everything that comes after this point will
|
|
// be served in the next iteration. If no even
|
|
// arrives, startOfNextIteration will be reset at the
|
|
// beginning of each for-loop.
|
|
startOfNextIteration = TimeStamp::NowLoRes();
|
|
}
|
|
}
|
|
TimeStamp eventQueueStart = TimeStamp::NowLoRes();
|
|
do {
|
|
NS_ProcessNextEvent(thread);
|
|
numberOfPendingEvents++;
|
|
pendingEvents = false;
|
|
thread->HasPendingEvents(&pendingEvents);
|
|
} while (pendingEvents && mServingPendingQueue &&
|
|
((TimeStamp::NowLoRes() -
|
|
eventQueueStart).ToMilliseconds() <
|
|
mMaxTimePerPollIter));
|
|
|
|
if (mTelemetryEnabledPref && !mServingPendingQueue &&
|
|
!startOfIteration.IsNull()) {
|
|
Telemetry::AccumulateTimeDelta(
|
|
Telemetry::STS_POLL_AND_EVENTS_CYCLE,
|
|
startOfIteration + pollDuration,
|
|
TimeStamp::NowLoRes());
|
|
|
|
Telemetry::Accumulate(
|
|
Telemetry::STS_NUMBER_OF_PENDING_EVENTS,
|
|
numberOfPendingEvents);
|
|
|
|
numberOfPendingEventsLastCycle += numberOfPendingEvents;
|
|
numberOfPendingEvents = 0;
|
|
pollDuration = 0;
|
|
}
|
|
}
|
|
} while (pendingEvents);
|
|
|
|
bool goingOffline = false;
|
|
// now that our event queue is empty, check to see if we should exit
|
|
{
|
|
DebugMutexAutoLock lock(mLock);
|
|
if (mShuttingDown) {
|
|
if (mTelemetryEnabledPref &&
|
|
!startOfCycleForLastCycleCalc.IsNull()) {
|
|
Telemetry::Accumulate(
|
|
Telemetry::STS_NUMBER_OF_PENDING_EVENTS_IN_THE_LAST_CYCLE,
|
|
numberOfPendingEventsLastCycle);
|
|
Telemetry::AccumulateTimeDelta(
|
|
Telemetry::STS_POLL_AND_EVENT_THE_LAST_CYCLE,
|
|
startOfCycleForLastCycleCalc,
|
|
TimeStamp::NowLoRes());
|
|
}
|
|
break;
|
|
}
|
|
if (mGoingOffline) {
|
|
mGoingOffline = false;
|
|
goingOffline = true;
|
|
}
|
|
}
|
|
// Avoid potential deadlock
|
|
if (goingOffline)
|
|
Reset(true);
|
|
}
|
|
|
|
SOCKET_LOG(("STS shutting down thread\n"));
|
|
|
|
// detach all sockets, including locals
|
|
Reset(false);
|
|
|
|
// Final pass over the event queue. This makes sure that events posted by
|
|
// socket detach handlers get processed.
|
|
NS_ProcessPendingEvents(thread);
|
|
|
|
gSocketThread = nullptr;
|
|
|
|
#if !defined(MOZILLA_XPCOMRT_API)
|
|
psm::StopSSLServerCertVerificationThreads();
|
|
#endif // !defined(MOZILLA_XPCOMRT_API)
|
|
|
|
SOCKET_LOG(("STS thread exit\n"));
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsSocketTransportService::DetachSocketWithGuard(bool aGuardLocals,
|
|
SocketContext *socketList,
|
|
int32_t index)
|
|
{
|
|
bool isGuarded = false;
|
|
if (aGuardLocals) {
|
|
socketList[index].mHandler->IsLocal(&isGuarded);
|
|
if (!isGuarded)
|
|
socketList[index].mHandler->KeepWhenOffline(&isGuarded);
|
|
}
|
|
if (!isGuarded)
|
|
DetachSocket(socketList, &socketList[index]);
|
|
}
|
|
|
|
void
|
|
nsSocketTransportService::Reset(bool aGuardLocals)
|
|
{
|
|
// detach any sockets
|
|
int32_t i;
|
|
for (i = mActiveCount - 1; i >= 0; --i) {
|
|
DetachSocketWithGuard(aGuardLocals, mActiveList, i);
|
|
}
|
|
for (i = mIdleCount - 1; i >= 0; --i) {
|
|
DetachSocketWithGuard(aGuardLocals, mIdleList, i);
|
|
}
|
|
}
|
|
|
|
nsresult
|
|
nsSocketTransportService::DoPollIteration(bool wait, TimeDuration *pollDuration)
|
|
{
|
|
SOCKET_LOG(("STS poll iter [%d]\n", wait));
|
|
|
|
int32_t i, count;
|
|
|
|
//
|
|
// poll loop
|
|
//
|
|
// walk active list backwards to see if any sockets should actually be
|
|
// idle, then walk the idle list backwards to see if any idle sockets
|
|
// should become active. take care to check only idle sockets that
|
|
// were idle to begin with ;-)
|
|
//
|
|
count = mIdleCount;
|
|
for (i=mActiveCount-1; i>=0; --i) {
|
|
//---
|
|
SOCKET_LOG((" active [%u] { handler=%p condition=%x pollflags=%hu }\n", i,
|
|
mActiveList[i].mHandler,
|
|
mActiveList[i].mHandler->mCondition,
|
|
mActiveList[i].mHandler->mPollFlags));
|
|
//---
|
|
if (NS_FAILED(mActiveList[i].mHandler->mCondition))
|
|
DetachSocket(mActiveList, &mActiveList[i]);
|
|
else {
|
|
uint16_t in_flags = mActiveList[i].mHandler->mPollFlags;
|
|
if (in_flags == 0)
|
|
MoveToIdleList(&mActiveList[i]);
|
|
else {
|
|
// update poll flags
|
|
mPollList[i+1].in_flags = in_flags;
|
|
mPollList[i+1].out_flags = 0;
|
|
}
|
|
}
|
|
}
|
|
for (i=count-1; i>=0; --i) {
|
|
//---
|
|
SOCKET_LOG((" idle [%u] { handler=%p condition=%x pollflags=%hu }\n", i,
|
|
mIdleList[i].mHandler,
|
|
mIdleList[i].mHandler->mCondition,
|
|
mIdleList[i].mHandler->mPollFlags));
|
|
//---
|
|
if (NS_FAILED(mIdleList[i].mHandler->mCondition))
|
|
DetachSocket(mIdleList, &mIdleList[i]);
|
|
else if (mIdleList[i].mHandler->mPollFlags != 0)
|
|
MoveToPollList(&mIdleList[i]);
|
|
}
|
|
|
|
SOCKET_LOG((" calling PR_Poll [active=%u idle=%u]\n", mActiveCount, mIdleCount));
|
|
|
|
#if defined(XP_WIN)
|
|
// 30 active connections is the historic limit before firefox 7's 256. A few
|
|
// windows systems have troubles with the higher limit, so actively probe a
|
|
// limit the first time we exceed 30.
|
|
if ((mActiveCount > 30) && !mProbedMaxCount)
|
|
ProbeMaxCount();
|
|
#endif
|
|
|
|
// Measures seconds spent while blocked on PR_Poll
|
|
uint32_t pollInterval;
|
|
|
|
int32_t n = Poll(wait, &pollInterval, pollDuration);
|
|
if (n < 0) {
|
|
SOCKET_LOG((" PR_Poll error [%d] os error [%d]\n", PR_GetError(),
|
|
PR_GetOSError()));
|
|
}
|
|
else {
|
|
//
|
|
// service "active" sockets...
|
|
//
|
|
uint32_t numberOfOnSocketReadyCalls = 0;
|
|
for (i=0; i<int32_t(mActiveCount); ++i) {
|
|
PRPollDesc &desc = mPollList[i+1];
|
|
SocketContext &s = mActiveList[i];
|
|
if (n > 0 && desc.out_flags != 0) {
|
|
s.mElapsedTime = 0;
|
|
s.mHandler->OnSocketReady(desc.fd, desc.out_flags);
|
|
numberOfOnSocketReadyCalls++;
|
|
}
|
|
// check for timeout errors unless disabled...
|
|
else if (s.mHandler->mPollTimeout != UINT16_MAX) {
|
|
// update elapsed time counter
|
|
// (NOTE: We explicitly cast UINT16_MAX to be an unsigned value
|
|
// here -- otherwise, some compilers will treat it as signed,
|
|
// which makes them fire signed/unsigned-comparison build
|
|
// warnings for the comparison against 'pollInterval'.)
|
|
if (MOZ_UNLIKELY(pollInterval >
|
|
static_cast<uint32_t>(UINT16_MAX) -
|
|
s.mElapsedTime))
|
|
s.mElapsedTime = UINT16_MAX;
|
|
else
|
|
s.mElapsedTime += uint16_t(pollInterval);
|
|
// check for timeout expiration
|
|
if (s.mElapsedTime >= s.mHandler->mPollTimeout) {
|
|
s.mElapsedTime = 0;
|
|
s.mHandler->OnSocketReady(desc.fd, -1);
|
|
numberOfOnSocketReadyCalls++;
|
|
}
|
|
}
|
|
}
|
|
if (mTelemetryEnabledPref) {
|
|
Telemetry::Accumulate(
|
|
Telemetry::STS_NUMBER_OF_ONSOCKETREADY_CALLS,
|
|
numberOfOnSocketReadyCalls);
|
|
}
|
|
|
|
//
|
|
// check for "dead" sockets and remove them (need to do this in
|
|
// reverse order obviously).
|
|
//
|
|
for (i=mActiveCount-1; i>=0; --i) {
|
|
if (NS_FAILED(mActiveList[i].mHandler->mCondition))
|
|
DetachSocket(mActiveList, &mActiveList[i]);
|
|
}
|
|
|
|
if (n != 0 && mPollList[0].out_flags == PR_POLL_READ) {
|
|
// acknowledge pollable event (wait should not block)
|
|
if (PR_WaitForPollableEvent(mThreadEvent) != PR_SUCCESS) {
|
|
// On Windows, the TCP loopback connection in the
|
|
// pollable event may become broken when a laptop
|
|
// switches between wired and wireless networks or
|
|
// wakes up from hibernation. We try to create a
|
|
// new pollable event. If that fails, we fall back
|
|
// on "busy wait".
|
|
{
|
|
DebugMutexAutoLock lock(mLock);
|
|
PR_DestroyPollableEvent(mThreadEvent);
|
|
mThreadEvent = PR_NewPollableEvent();
|
|
}
|
|
if (!mThreadEvent) {
|
|
NS_WARNING("running socket transport thread without "
|
|
"a pollable event");
|
|
SOCKET_LOG(("running socket transport thread without "
|
|
"a pollable event"));
|
|
}
|
|
mPollList[0].fd = mThreadEvent;
|
|
// mPollList[0].in_flags was already set to PR_POLL_READ
|
|
// in Run().
|
|
mPollList[0].out_flags = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsSocketTransportService::UpdatePrefs()
|
|
{
|
|
#if defined(MOZILLA_XPCOMRT_API)
|
|
NS_WARNING("nsSocketTransportService::UpdatePrefs not implemented");
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
#else
|
|
mSendBufferSize = 0;
|
|
|
|
nsCOMPtr<nsIPrefBranch> tmpPrefService = do_GetService(NS_PREFSERVICE_CONTRACTID);
|
|
if (tmpPrefService) {
|
|
int32_t bufferSize;
|
|
nsresult rv = tmpPrefService->GetIntPref(SEND_BUFFER_PREF, &bufferSize);
|
|
if (NS_SUCCEEDED(rv) && bufferSize > 0)
|
|
mSendBufferSize = bufferSize;
|
|
|
|
// Default TCP Keepalive Values.
|
|
int32_t keepaliveIdleTimeS;
|
|
rv = tmpPrefService->GetIntPref(KEEPALIVE_IDLE_TIME_PREF,
|
|
&keepaliveIdleTimeS);
|
|
if (NS_SUCCEEDED(rv))
|
|
mKeepaliveIdleTimeS = clamped(keepaliveIdleTimeS,
|
|
1, kMaxTCPKeepIdle);
|
|
|
|
int32_t keepaliveRetryIntervalS;
|
|
rv = tmpPrefService->GetIntPref(KEEPALIVE_RETRY_INTERVAL_PREF,
|
|
&keepaliveRetryIntervalS);
|
|
if (NS_SUCCEEDED(rv))
|
|
mKeepaliveRetryIntervalS = clamped(keepaliveRetryIntervalS,
|
|
1, kMaxTCPKeepIntvl);
|
|
|
|
int32_t keepaliveProbeCount;
|
|
rv = tmpPrefService->GetIntPref(KEEPALIVE_PROBE_COUNT_PREF,
|
|
&keepaliveProbeCount);
|
|
if (NS_SUCCEEDED(rv))
|
|
mKeepaliveProbeCount = clamped(keepaliveProbeCount,
|
|
1, kMaxTCPKeepCount);
|
|
bool keepaliveEnabled = false;
|
|
rv = tmpPrefService->GetBoolPref(KEEPALIVE_ENABLED_PREF,
|
|
&keepaliveEnabled);
|
|
if (NS_SUCCEEDED(rv) && keepaliveEnabled != mKeepaliveEnabledPref) {
|
|
mKeepaliveEnabledPref = keepaliveEnabled;
|
|
OnKeepaliveEnabledPrefChange();
|
|
}
|
|
|
|
int32_t maxTimePref;
|
|
rv = tmpPrefService->GetIntPref(MAX_TIME_BETWEEN_TWO_POLLS,
|
|
&maxTimePref);
|
|
if (NS_SUCCEEDED(rv) && maxTimePref >= 0) {
|
|
mMaxTimePerPollIter = maxTimePref;
|
|
}
|
|
|
|
bool telemetryPref = false;
|
|
rv = tmpPrefService->GetBoolPref(TELEMETRY_PREF,
|
|
&telemetryPref);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
mTelemetryEnabledPref = telemetryPref;
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
#endif // defined(MOZILLA_XPCOMRT_API)
|
|
}
|
|
|
|
void
|
|
nsSocketTransportService::OnKeepaliveEnabledPrefChange()
|
|
{
|
|
// Dispatch to socket thread if we're not executing there.
|
|
if (PR_GetCurrentThread() != gSocketThread) {
|
|
gSocketTransportService->Dispatch(
|
|
NS_NewRunnableMethod(
|
|
this, &nsSocketTransportService::OnKeepaliveEnabledPrefChange),
|
|
NS_DISPATCH_NORMAL);
|
|
return;
|
|
}
|
|
|
|
SOCKET_LOG(("nsSocketTransportService::OnKeepaliveEnabledPrefChange %s",
|
|
mKeepaliveEnabledPref ? "enabled" : "disabled"));
|
|
|
|
// Notify each socket that keepalive has been en/disabled globally.
|
|
for (int32_t i = mActiveCount - 1; i >= 0; --i) {
|
|
NotifyKeepaliveEnabledPrefChange(&mActiveList[i]);
|
|
}
|
|
for (int32_t i = mIdleCount - 1; i >= 0; --i) {
|
|
NotifyKeepaliveEnabledPrefChange(&mIdleList[i]);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsSocketTransportService::NotifyKeepaliveEnabledPrefChange(SocketContext *sock)
|
|
{
|
|
MOZ_ASSERT(sock, "SocketContext cannot be null!");
|
|
MOZ_ASSERT(sock->mHandler, "SocketContext does not have a handler!");
|
|
|
|
if (!sock || !sock->mHandler) {
|
|
return;
|
|
}
|
|
|
|
sock->mHandler->OnKeepaliveEnabledPrefChange(mKeepaliveEnabledPref);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSocketTransportService::Observe(nsISupports *subject,
|
|
const char *topic,
|
|
const char16_t *data)
|
|
{
|
|
#if !defined(MOZILLA_XPCOMRT_API)
|
|
if (!strcmp(topic, NS_PREFBRANCH_PREFCHANGE_TOPIC_ID)) {
|
|
UpdatePrefs();
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!strcmp(topic, "profile-initial-state")) {
|
|
int32_t blipInterval = Preferences::GetInt(BLIP_INTERVAL_PREF, 0);
|
|
if (blipInterval <= 0) {
|
|
return NS_OK;
|
|
}
|
|
|
|
return net::NetworkActivityMonitor::Init(blipInterval);
|
|
}
|
|
#endif // !defined(MOZILLA_XPCOMRT_API)
|
|
|
|
if (!strcmp(topic, "last-pb-context-exited")) {
|
|
nsCOMPtr<nsIRunnable> ev =
|
|
NS_NewRunnableMethod(this,
|
|
&nsSocketTransportService::ClosePrivateConnections);
|
|
nsresult rv = Dispatch(ev, nsIEventTarget::DISPATCH_NORMAL);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsSocketTransportService::ClosePrivateConnections()
|
|
{
|
|
// Must be called on the socket thread.
|
|
#ifdef DEBUG
|
|
bool onSTSThread;
|
|
IsOnCurrentThread(&onSTSThread);
|
|
MOZ_ASSERT(onSTSThread);
|
|
#endif
|
|
|
|
for (int32_t i = mActiveCount - 1; i >= 0; --i) {
|
|
if (mActiveList[i].mHandler->mIsPrivate) {
|
|
DetachSocket(mActiveList, &mActiveList[i]);
|
|
}
|
|
}
|
|
for (int32_t i = mIdleCount - 1; i >= 0; --i) {
|
|
if (mIdleList[i].mHandler->mIsPrivate) {
|
|
DetachSocket(mIdleList, &mIdleList[i]);
|
|
}
|
|
}
|
|
|
|
#if !defined(MOZILLA_XPCOMRT_API)
|
|
mozilla::ClearPrivateSSLState();
|
|
#endif // !defined(MOZILLA_XPCOMRT_API)
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSocketTransportService::GetSendBufferSize(int32_t *value)
|
|
{
|
|
*value = mSendBufferSize;
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
/// ugly OS specific includes are placed at the bottom of the src for clarity
|
|
|
|
#if defined(XP_WIN)
|
|
#include <windows.h>
|
|
#elif defined(XP_UNIX) && !defined(AIX) && !defined(NEXTSTEP) && !defined(QNX)
|
|
#include <sys/resource.h>
|
|
#endif
|
|
|
|
// Right now the only need to do this is on windows.
|
|
#if defined(XP_WIN)
|
|
void
|
|
nsSocketTransportService::ProbeMaxCount()
|
|
{
|
|
NS_ASSERTION(PR_GetCurrentThread() == gSocketThread, "wrong thread");
|
|
|
|
if (mProbedMaxCount)
|
|
return;
|
|
mProbedMaxCount = true;
|
|
|
|
// Allocate and test a PR_Poll up to the gMaxCount number of unconnected
|
|
// sockets. See bug 692260 - windows should be able to handle 1000 sockets
|
|
// in select() without a problem, but LSPs have been known to balk at lower
|
|
// numbers. (64 in the bug).
|
|
|
|
// Allocate
|
|
struct PRPollDesc pfd[SOCKET_LIMIT_TARGET];
|
|
uint32_t numAllocated = 0;
|
|
|
|
for (uint32_t index = 0 ; index < gMaxCount; ++index) {
|
|
pfd[index].in_flags = PR_POLL_READ | PR_POLL_WRITE | PR_POLL_EXCEPT;
|
|
pfd[index].out_flags = 0;
|
|
pfd[index].fd = PR_OpenTCPSocket(PR_AF_INET);
|
|
if (!pfd[index].fd) {
|
|
SOCKET_LOG(("Socket Limit Test index %d failed\n", index));
|
|
if (index < SOCKET_LIMIT_MIN)
|
|
gMaxCount = SOCKET_LIMIT_MIN;
|
|
else
|
|
gMaxCount = index;
|
|
break;
|
|
}
|
|
++numAllocated;
|
|
}
|
|
|
|
// Test
|
|
PR_STATIC_ASSERT(SOCKET_LIMIT_MIN >= 32U);
|
|
while (gMaxCount <= numAllocated) {
|
|
int32_t rv = PR_Poll(pfd, gMaxCount, PR_MillisecondsToInterval(0));
|
|
|
|
SOCKET_LOG(("Socket Limit Test poll() size=%d rv=%d\n",
|
|
gMaxCount, rv));
|
|
|
|
if (rv >= 0)
|
|
break;
|
|
|
|
SOCKET_LOG(("Socket Limit Test poll confirmationSize=%d rv=%d error=%d\n",
|
|
gMaxCount, rv, PR_GetError()));
|
|
|
|
gMaxCount -= 32;
|
|
if (gMaxCount <= SOCKET_LIMIT_MIN) {
|
|
gMaxCount = SOCKET_LIMIT_MIN;
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Free
|
|
for (uint32_t index = 0 ; index < numAllocated; ++index)
|
|
if (pfd[index].fd)
|
|
PR_Close(pfd[index].fd);
|
|
|
|
SOCKET_LOG(("Socket Limit Test max was confirmed at %d\n", gMaxCount));
|
|
}
|
|
#endif // windows
|
|
|
|
PRStatus
|
|
nsSocketTransportService::DiscoverMaxCount()
|
|
{
|
|
gMaxCount = SOCKET_LIMIT_MIN;
|
|
|
|
#if defined(XP_UNIX) && !defined(AIX) && !defined(NEXTSTEP) && !defined(QNX)
|
|
// On unix and os x network sockets and file
|
|
// descriptors are the same. OS X comes defaulted at 256,
|
|
// most linux at 1000. We can reliably use [sg]rlimit to
|
|
// query that and raise it. We will try to raise it 250 past
|
|
// our target number of SOCKET_LIMIT_TARGET so that some descriptors
|
|
// are still available for other things.
|
|
|
|
struct rlimit rlimitData;
|
|
if (getrlimit(RLIMIT_NOFILE, &rlimitData) == -1)
|
|
return PR_SUCCESS;
|
|
if (rlimitData.rlim_cur >= SOCKET_LIMIT_TARGET + 250) {
|
|
gMaxCount = SOCKET_LIMIT_TARGET;
|
|
return PR_SUCCESS;
|
|
}
|
|
|
|
int32_t maxallowed = rlimitData.rlim_max;
|
|
if (maxallowed == -1) { /* no limit */
|
|
maxallowed = SOCKET_LIMIT_TARGET + 250;
|
|
} else if ((uint32_t)maxallowed < SOCKET_LIMIT_MIN + 250) {
|
|
return PR_SUCCESS;
|
|
} else if ((uint32_t)maxallowed > SOCKET_LIMIT_TARGET + 250) {
|
|
maxallowed = SOCKET_LIMIT_TARGET + 250;
|
|
}
|
|
|
|
rlimitData.rlim_cur = maxallowed;
|
|
setrlimit(RLIMIT_NOFILE, &rlimitData);
|
|
if (getrlimit(RLIMIT_NOFILE, &rlimitData) != -1)
|
|
if (rlimitData.rlim_cur > SOCKET_LIMIT_MIN + 250)
|
|
gMaxCount = rlimitData.rlim_cur - 250;
|
|
|
|
#elif defined(XP_WIN) && !defined(WIN_CE)
|
|
// >= XP is confirmed to have at least 1000
|
|
gMaxCount = SOCKET_LIMIT_TARGET;
|
|
#else
|
|
// other platforms are harder to test - so leave at safe legacy value
|
|
#endif
|
|
|
|
return PR_SUCCESS;
|
|
}
|
|
|
|
|
|
// Used to return connection info to Dashboard.cpp
|
|
void
|
|
nsSocketTransportService::AnalyzeConnection(nsTArray<SocketInfo> *data,
|
|
struct SocketContext *context, bool aActive)
|
|
{
|
|
if (context->mHandler->mIsPrivate)
|
|
return;
|
|
PRFileDesc *aFD = context->mFD;
|
|
bool tcp = (PR_GetDescType(PR_GetIdentitiesLayer(aFD, PR_NSPR_IO_LAYER)) ==
|
|
PR_DESC_SOCKET_TCP);
|
|
|
|
PRNetAddr peer_addr;
|
|
PR_GetPeerName(aFD, &peer_addr);
|
|
|
|
char host[64] = {0};
|
|
PR_NetAddrToString(&peer_addr, host, sizeof(host));
|
|
|
|
uint16_t port;
|
|
if (peer_addr.raw.family == PR_AF_INET)
|
|
port = peer_addr.inet.port;
|
|
else
|
|
port = peer_addr.ipv6.port;
|
|
port = PR_ntohs(port);
|
|
uint64_t sent = context->mHandler->ByteCountSent();
|
|
uint64_t received = context->mHandler->ByteCountReceived();
|
|
SocketInfo info = { nsCString(host), sent, received, port, aActive, tcp };
|
|
|
|
data->AppendElement(info);
|
|
}
|
|
|
|
void
|
|
nsSocketTransportService::GetSocketConnections(nsTArray<SocketInfo> *data)
|
|
{
|
|
NS_ASSERTION(PR_GetCurrentThread() == gSocketThread, "wrong thread");
|
|
for (uint32_t i = 0; i < mActiveCount; i++)
|
|
AnalyzeConnection(data, &mActiveList[i], true);
|
|
for (uint32_t i = 0; i < mIdleCount; i++)
|
|
AnalyzeConnection(data, &mIdleList[i], false);
|
|
}
|