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gecko-dev/netwerk/protocol/http/nsHttpTransaction.cpp

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim:set ts=4 sw=4 sts=4 et cin: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
// HttpLog.h should generally be included first
#include "HttpLog.h"
#include "base/basictypes.h"
#include "nsHttpHandler.h"
#include "nsHttpTransaction.h"
#include "nsHttpRequestHead.h"
#include "nsHttpResponseHead.h"
#include "nsHttpChunkedDecoder.h"
#include "nsTransportUtils.h"
#include "nsNetCID.h"
#include "nsNetUtil.h"
#include "nsIChannel.h"
#include "nsIPipe.h"
#include "nsCRT.h"
#include "mozilla/Tokenizer.h"
#include "TCPFastOpenLayer.h"
#include "nsISeekableStream.h"
#include "nsMultiplexInputStream.h"
#include "nsStringStream.h"
#include "nsComponentManagerUtils.h" // do_CreateInstance
#include "nsIHttpActivityObserver.h"
#include "nsSocketTransportService2.h"
#include "nsICancelable.h"
#include "nsIClassOfService.h"
#include "nsIEventTarget.h"
#include "nsIHttpChannelInternal.h"
#include "nsIInputStream.h"
#include "nsIThrottledInputChannel.h"
#include "nsITransport.h"
#include "nsIOService.h"
#include "nsIRequestContext.h"
#include "nsIHttpAuthenticator.h"
#include "NSSErrorsService.h"
#include "sslerr.h"
#include <algorithm>
//-----------------------------------------------------------------------------
static NS_DEFINE_CID(kMultiplexInputStream, NS_MULTIPLEXINPUTSTREAM_CID);
// Place a limit on how much non-compliant HTTP can be skipped while
// looking for a response header
#define MAX_INVALID_RESPONSE_BODY_SIZE (1024 * 128)
using namespace mozilla::net;
namespace mozilla {
namespace net {
//-----------------------------------------------------------------------------
// helpers
//-----------------------------------------------------------------------------
static void
LogHeaders(const char *lineStart)
{
nsAutoCString buf;
char *endOfLine;
while ((endOfLine = PL_strstr(lineStart, "\r\n"))) {
buf.Assign(lineStart, endOfLine - lineStart);
if (PL_strcasestr(buf.get(), "authorization: ") ||
PL_strcasestr(buf.get(), "proxy-authorization: ")) {
char *p = PL_strchr(PL_strchr(buf.get(), ' ') + 1, ' ');
while (p && *++p)
*p = '*';
}
LOG3((" %s\n", buf.get()));
lineStart = endOfLine + 2;
}
}
//-----------------------------------------------------------------------------
// nsHttpTransaction <public>
//-----------------------------------------------------------------------------
nsHttpTransaction::nsHttpTransaction()
: mLock("transaction lock")
, mRequestSize(0)
, mRequestHead(nullptr)
, mResponseHead(nullptr)
, mReader(nullptr)
, mWriter(nullptr)
, mContentLength(-1)
, mContentRead(0)
, mTransferSize(0)
, mInvalidResponseBytesRead(0)
, mPushedStream(nullptr)
, mInitialRwin(0)
, mChunkedDecoder(nullptr)
, mStatus(NS_OK)
, mPriority(0)
, mRestartCount(0)
, mCaps(0)
, mHttpVersion(NS_HTTP_VERSION_UNKNOWN)
, mHttpResponseCode(0)
, mCurrentHttpResponseHeaderSize(0)
, mCapsToClear(0)
, mResponseIsComplete(false)
, mReadingStopped(false)
, mClosed(false)
, mConnected(false)
, mActivated(false)
, mActivatedAsH2(false)
, mHaveStatusLine(false)
, mHaveAllHeaders(false)
, mTransactionDone(false)
, mDidContentStart(false)
, mNoContent(false)
, mSentData(false)
, mReceivedData(false)
, mStatusEventPending(false)
, mHasRequestBody(false)
, mProxyConnectFailed(false)
, mHttpResponseMatched(false)
, mPreserveStream(false)
, mDispatchedAsBlocking(false)
, mResponseTimeoutEnabled(true)
, mForceRestart(false)
, mReuseOnRestart(false)
, mContentDecoding(false)
, mContentDecodingCheck(false)
, mDeferredSendProgress(false)
, mWaitingOnPipeOut(false)
, mReportedStart(false)
, mReportedResponseHeader(false)
, mForTakeResponseHead(nullptr)
, mResponseHeadTaken(false)
, mTopLevelOuterContentWindowId(0)
, mSubmittedRatePacing(false)
, mPassedRatePacing(false)
, mSynchronousRatePaceRequest(false)
, mClassOfService(0)
, m0RTTInProgress(false)
, mEarlyDataDisposition(EARLY_NONE)
, mFastOpenStatus(TFO_NOT_TRIED)
{
LOG(("Creating nsHttpTransaction @%p\n", this));
#ifdef MOZ_VALGRIND
memset(&mSelfAddr, 0, sizeof(NetAddr));
memset(&mPeerAddr, 0, sizeof(NetAddr));
#endif
mSelfAddr.raw.family = PR_AF_UNSPEC;
mPeerAddr.raw.family = PR_AF_UNSPEC;
}
void nsHttpTransaction::ResumeReading()
{
MOZ_ASSERT(OnSocketThread(), "not on socket thread");
if (!mReadingStopped) {
return;
}
LOG(("nsHttpTransaction::ResumeReading %p", this));
mReadingStopped = false;
if (mConnection) {
nsresult rv = mConnection->ResumeRecv();
if (NS_FAILED(rv)) {
LOG((" resume failed with rv=%" PRIx32, static_cast<uint32_t>(rv)));
}
}
}
bool nsHttpTransaction::EligibleForThrottling() const
{
return (mClassOfService & (nsIClassOfService::Throttleable |
nsIClassOfService::DontThrottle |
nsIClassOfService::Leader |
nsIClassOfService::Unblocked)) ==
nsIClassOfService::Throttleable;
}
void nsHttpTransaction::SetClassOfService(uint32_t cos)
{
bool wasThrottling = EligibleForThrottling();
mClassOfService = cos;
bool isThrottling = EligibleForThrottling();
if (mConnection && wasThrottling != isThrottling) {
// Do nothing until we are actually activated. For now
// only remember the throttle flag. Call to UpdateActiveTransaction
// would add this transaction to the list too early.
gHttpHandler->ConnMgr()->UpdateActiveTransaction(this);
if (mReadingStopped && !isThrottling) {
ResumeReading();
}
}
}
nsHttpTransaction::~nsHttpTransaction()
{
LOG(("Destroying nsHttpTransaction @%p\n", this));
if (mTransactionObserver) {
mTransactionObserver->Complete(this, NS_OK);
}
if (mPushedStream) {
mPushedStream->OnPushFailed();
mPushedStream = nullptr;
}
if (mTokenBucketCancel) {
mTokenBucketCancel->Cancel(NS_ERROR_ABORT);
mTokenBucketCancel = nullptr;
}
// Force the callbacks and connection to be released right now
mCallbacks = nullptr;
mConnection = nullptr;
delete mResponseHead;
delete mForTakeResponseHead;
delete mChunkedDecoder;
ReleaseBlockingTransaction();
}
nsresult
nsHttpTransaction::Init(uint32_t caps,
nsHttpConnectionInfo *cinfo,
nsHttpRequestHead *requestHead,
nsIInputStream *requestBody,
uint64_t requestContentLength,
bool requestBodyHasHeaders,
nsIEventTarget *target,
nsIInterfaceRequestor *callbacks,
nsITransportEventSink *eventsink,
uint64_t topLevelOuterContentWindowId,
nsIAsyncInputStream **responseBody)
{
nsresult rv;
LOG(("nsHttpTransaction::Init [this=%p caps=%x]\n", this, caps));
MOZ_ASSERT(cinfo);
MOZ_ASSERT(requestHead);
MOZ_ASSERT(target);
MOZ_ASSERT(NS_IsMainThread());
mTopLevelOuterContentWindowId = topLevelOuterContentWindowId;
LOG((" window-id = %" PRIx64, mTopLevelOuterContentWindowId));
mActivityDistributor = services::GetActivityDistributor();
if (!mActivityDistributor) {
return NS_ERROR_NOT_AVAILABLE;
}
bool activityDistributorActive;
rv = mActivityDistributor->GetIsActive(&activityDistributorActive);
if (NS_SUCCEEDED(rv) && activityDistributorActive) {
// there are some observers registered at activity distributor, gather
// nsISupports for the channel that called Init()
LOG(("nsHttpTransaction::Init() " \
"mActivityDistributor is active " \
"this=%p", this));
} else {
// there is no observer, so don't use it
activityDistributorActive = false;
mActivityDistributor = nullptr;
}
mChannel = do_QueryInterface(eventsink);
nsCOMPtr<nsIHttpChannelInternal> httpChannelInternal =
do_QueryInterface(eventsink);
if (httpChannelInternal) {
rv = httpChannelInternal->GetResponseTimeoutEnabled(
&mResponseTimeoutEnabled);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
rv = httpChannelInternal->GetInitialRwin(&mInitialRwin);
MOZ_ASSERT(NS_SUCCEEDED(rv));
}
// create transport event sink proxy. it coalesces consecutive
// events of the same status type.
rv = net_NewTransportEventSinkProxy(getter_AddRefs(mTransportSink),
eventsink, target);
if (NS_FAILED(rv)) return rv;
mConnInfo = cinfo;
mCallbacks = callbacks;
mConsumerTarget = target;
mCaps = caps;
if (requestHead->IsHead()) {
mNoContent = true;
}
// Make sure that there is "Content-Length: 0" header in the requestHead
// in case of POST and PUT methods when there is no requestBody and
// requestHead doesn't contain "Transfer-Encoding" header.
//
// RFC1945 section 7.2.2:
// HTTP/1.0 requests containing an entity body must include a valid
// Content-Length header field.
//
// RFC2616 section 4.4:
// For compatibility with HTTP/1.0 applications, HTTP/1.1 requests
// containing a message-body MUST include a valid Content-Length header
// field unless the server is known to be HTTP/1.1 compliant.
if ((requestHead->IsPost() || requestHead->IsPut()) &&
!requestBody && !requestHead->HasHeader(nsHttp::Transfer_Encoding)) {
rv = requestHead->SetHeader(nsHttp::Content_Length, NS_LITERAL_CSTRING("0"));
MOZ_ASSERT(NS_SUCCEEDED(rv));
}
// grab a weak reference to the request head
mRequestHead = requestHead;
// make sure we eliminate any proxy specific headers from
// the request if we are using CONNECT
bool pruneProxyHeaders = cinfo->UsingConnect();
mReqHeaderBuf.Truncate();
requestHead->Flatten(mReqHeaderBuf, pruneProxyHeaders);
if (LOG3_ENABLED()) {
LOG3(("http request [\n"));
LogHeaders(mReqHeaderBuf.get());
LOG3(("]\n"));
}
// If the request body does not include headers or if there is no request
// body, then we must add the header/body separator manually.
if (!requestBodyHasHeaders || !requestBody)
mReqHeaderBuf.AppendLiteral("\r\n");
// report the request header
if (mActivityDistributor) {
rv = mActivityDistributor->ObserveActivity(
mChannel,
NS_HTTP_ACTIVITY_TYPE_HTTP_TRANSACTION,
NS_HTTP_ACTIVITY_SUBTYPE_REQUEST_HEADER,
PR_Now(), 0,
mReqHeaderBuf);
if (NS_FAILED(rv)) {
LOG3(("ObserveActivity failed (%08x)", static_cast<uint32_t>(rv)));
}
}
// Create a string stream for the request header buf (the stream holds
// a non-owning reference to the request header data, so we MUST keep
// mReqHeaderBuf around).
nsCOMPtr<nsIInputStream> headers;
rv = NS_NewByteInputStream(getter_AddRefs(headers),
mReqHeaderBuf.get(),
mReqHeaderBuf.Length());
if (NS_FAILED(rv)) return rv;
mHasRequestBody = !!requestBody;
if (mHasRequestBody && !requestContentLength) {
mHasRequestBody = false;
}
requestContentLength += mReqHeaderBuf.Length();
if (mHasRequestBody) {
// wrap the headers and request body in a multiplexed input stream.
nsCOMPtr<nsIMultiplexInputStream> multi =
do_CreateInstance(kMultiplexInputStream, &rv);
if (NS_FAILED(rv)) return rv;
rv = multi->AppendStream(headers);
if (NS_FAILED(rv)) return rv;
rv = multi->AppendStream(requestBody);
if (NS_FAILED(rv)) return rv;
// wrap the multiplexed input stream with a buffered input stream, so
// that we write data in the largest chunks possible. this is actually
// necessary to workaround some common server bugs (see bug 137155).
rv = NS_NewBufferedInputStream(getter_AddRefs(mRequestStream), multi,
nsIOService::gDefaultSegmentSize);
if (NS_FAILED(rv)) return rv;
} else {
mRequestStream = headers;
}
nsCOMPtr<nsIThrottledInputChannel> throttled = do_QueryInterface(mChannel);
nsIInputChannelThrottleQueue* queue;
if (throttled) {
rv = throttled->GetThrottleQueue(&queue);
// In case of failure, just carry on without throttling.
if (NS_SUCCEEDED(rv) && queue) {
nsCOMPtr<nsIAsyncInputStream> wrappedStream;
rv = queue->WrapStream(mRequestStream, getter_AddRefs(wrappedStream));
// Failure to throttle isn't sufficient reason to fail
// initialization
if (NS_SUCCEEDED(rv)) {
MOZ_ASSERT(wrappedStream != nullptr);
LOG(("nsHttpTransaction::Init %p wrapping input stream using throttle queue %p\n",
this, queue));
mRequestStream = do_QueryInterface(wrappedStream);
}
}
}
// make sure request content-length fits within js MAX_SAFE_INTEGER
mRequestSize = InScriptableRange(requestContentLength) ? static_cast<int64_t>(requestContentLength) : -1;
// create pipe for response stream
rv = NS_NewPipe2(getter_AddRefs(mPipeIn),
getter_AddRefs(mPipeOut),
true, true,
nsIOService::gDefaultSegmentSize,
nsIOService::gDefaultSegmentCount);
if (NS_FAILED(rv)) return rv;
#ifdef WIN32 // bug 1153929
MOZ_DIAGNOSTIC_ASSERT(mPipeOut);
uint32_t * vtable = (uint32_t *) mPipeOut.get();
MOZ_DIAGNOSTIC_ASSERT(*vtable != 0);
#endif // WIN32
nsCOMPtr<nsIAsyncInputStream> tmp(mPipeIn);
tmp.forget(responseBody);
return NS_OK;
}
// This method should only be used on the socket thread
nsAHttpConnection *
nsHttpTransaction::Connection()
{
MOZ_ASSERT(OnSocketThread(), "not on socket thread");
return mConnection.get();
}
already_AddRefed<nsAHttpConnection>
nsHttpTransaction::GetConnectionReference()
{
MutexAutoLock lock(mLock);
RefPtr<nsAHttpConnection> connection(mConnection);
return connection.forget();
}
nsHttpResponseHead *
nsHttpTransaction::TakeResponseHead()
{
MOZ_ASSERT(!mResponseHeadTaken, "TakeResponseHead called 2x");
// Lock TakeResponseHead() against main thread
MutexAutoLock lock(*nsHttp::GetLock());
mResponseHeadTaken = true;
// Prefer mForTakeResponseHead over mResponseHead. It is always a complete
// set of headers.
nsHttpResponseHead *head;
if (mForTakeResponseHead) {
head = mForTakeResponseHead;
mForTakeResponseHead = nullptr;
return head;
}
// Even in OnStartRequest() the headers won't be available if we were
// canceled
if (!mHaveAllHeaders) {
NS_WARNING("response headers not available or incomplete");
return nullptr;
}
head = mResponseHead;
mResponseHead = nullptr;
return head;
}
void
nsHttpTransaction::SetProxyConnectFailed()
{
mProxyConnectFailed = true;
}
nsHttpRequestHead *
nsHttpTransaction::RequestHead()
{
return mRequestHead;
}
uint32_t
nsHttpTransaction::Http1xTransactionCount()
{
return 1;
}
nsresult
nsHttpTransaction::TakeSubTransactions(
nsTArray<RefPtr<nsAHttpTransaction> > &outTransactions)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
//----------------------------------------------------------------------------
// nsHttpTransaction::nsAHttpTransaction
//----------------------------------------------------------------------------
void
nsHttpTransaction::SetConnection(nsAHttpConnection *conn)
{
{
MutexAutoLock lock(mLock);
mConnection = conn;
}
}
void
nsHttpTransaction::OnActivated(bool h2)
{
MOZ_ASSERT(OnSocketThread());
mActivatedAsH2 = h2;
if (mActivated) {
return;
}
mActivated = true;
gHttpHandler->ConnMgr()->AddActiveTransaction(this);
}
void
nsHttpTransaction::GetSecurityCallbacks(nsIInterfaceRequestor **cb)
{
MutexAutoLock lock(mLock);
nsCOMPtr<nsIInterfaceRequestor> tmp(mCallbacks);
tmp.forget(cb);
}
void
nsHttpTransaction::SetSecurityCallbacks(nsIInterfaceRequestor* aCallbacks)
{
{
MutexAutoLock lock(mLock);
mCallbacks = aCallbacks;
}
if (gSocketTransportService) {
RefPtr<UpdateSecurityCallbacks> event = new UpdateSecurityCallbacks(this, aCallbacks);
gSocketTransportService->Dispatch(event, nsIEventTarget::DISPATCH_NORMAL);
}
}
void
nsHttpTransaction::OnTransportStatus(nsITransport* transport,
nsresult status, int64_t progress)
{
LOG(("nsHttpTransaction::OnSocketStatus [this=%p status=%" PRIx32 " progress=%" PRId64 "]\n",
this, static_cast<uint32_t>(status), progress));
if (status == NS_NET_STATUS_CONNECTED_TO ||
status == NS_NET_STATUS_WAITING_FOR) {
nsISocketTransport *socketTransport =
mConnection ? mConnection->Transport() : nullptr;
if (socketTransport) {
MutexAutoLock lock(mLock);
socketTransport->GetSelfAddr(&mSelfAddr);
socketTransport->GetPeerAddr(&mPeerAddr);
}
}
// If the timing is enabled, and we are not using a persistent connection
// then the requestStart timestamp will be null, so we mark the timestamps
// for domainLookupStart/End and connectStart/End
// If we are using a persistent connection they will remain null,
// and the correct value will be returned in Performance.
if (TimingEnabled() && GetRequestStart().IsNull()) {
if (status == NS_NET_STATUS_RESOLVING_HOST) {
SetDomainLookupStart(TimeStamp::Now(), true);
} else if (status == NS_NET_STATUS_RESOLVED_HOST) {
SetDomainLookupEnd(TimeStamp::Now());
} else if (status == NS_NET_STATUS_CONNECTING_TO) {
SetConnectStart(TimeStamp::Now());
} else if (status == NS_NET_STATUS_CONNECTED_TO) {
SetConnectEnd(TimeStamp::Now(), true);
} else if (status == NS_NET_STATUS_TLS_HANDSHAKE_ENDED) {
{
// before overwriting connectEnd, copy it to secureConnectionStart
MutexAutoLock lock(mLock);
if (mTimings.secureConnectionStart.IsNull() &&
!mTimings.connectEnd.IsNull()) {
mTimings.secureConnectionStart = mTimings.connectEnd;
}
}
SetConnectEnd(TimeStamp::Now(), false);
} else if (status == NS_NET_STATUS_SENDING_TO) {
// Set the timestamp to Now(), only if it null
SetRequestStart(TimeStamp::Now(), true);
}
}
if (!mTransportSink)
return;
MOZ_ASSERT(OnSocketThread(), "not on socket thread");
// Need to do this before the STATUS_RECEIVING_FROM check below, to make
// sure that the activity distributor gets told about all status events.
if (mActivityDistributor) {
// upon STATUS_WAITING_FOR; report request body sent
if ((mHasRequestBody) &&
(status == NS_NET_STATUS_WAITING_FOR)) {
nsresult rv = mActivityDistributor->ObserveActivity(
mChannel,
NS_HTTP_ACTIVITY_TYPE_HTTP_TRANSACTION,
NS_HTTP_ACTIVITY_SUBTYPE_REQUEST_BODY_SENT,
PR_Now(), 0, EmptyCString());
if (NS_FAILED(rv)) {
LOG3(("ObserveActivity failed (%08x)", static_cast<uint32_t>(rv)));
}
}
// report the status and progress
nsresult rv = mActivityDistributor->ObserveActivity(
mChannel,
NS_HTTP_ACTIVITY_TYPE_SOCKET_TRANSPORT,
static_cast<uint32_t>(status),
PR_Now(),
progress,
EmptyCString());
if (NS_FAILED(rv)) {
LOG3(("ObserveActivity failed (%08x)", static_cast<uint32_t>(rv)));
}
}
// nsHttpChannel synthesizes progress events in OnDataAvailable
if (status == NS_NET_STATUS_RECEIVING_FROM)
return;
int64_t progressMax;
if (status == NS_NET_STATUS_SENDING_TO) {
// suppress progress when only writing request headers
if (!mHasRequestBody) {
LOG(("nsHttpTransaction::OnTransportStatus %p "
"SENDING_TO without request body\n", this));
return;
}
if (mReader) {
// A mRequestStream method is on the stack - wait.
LOG(("nsHttpTransaction::OnSocketStatus [this=%p] "
"Skipping Re-Entrant NS_NET_STATUS_SENDING_TO\n", this));
// its ok to coalesce several of these into one deferred event
mDeferredSendProgress = true;
return;
}
nsCOMPtr<nsISeekableStream> seekable = do_QueryInterface(mRequestStream);
if (!seekable) {
LOG(("nsHttpTransaction::OnTransportStatus %p "
"SENDING_TO without seekable request stream\n", this));
progress = 0;
} else {
int64_t prog = 0;
seekable->Tell(&prog);
progress = prog;
}
// when uploading, we include the request headers in the progress
// notifications.
progressMax = mRequestSize;
}
else {
progress = 0;
progressMax = 0;
}
mTransportSink->OnTransportStatus(transport, status, progress, progressMax);
}
bool
nsHttpTransaction::IsDone()
{
return mTransactionDone;
}
nsresult
nsHttpTransaction::Status()
{
return mStatus;
}
uint32_t
nsHttpTransaction::Caps()
{
return mCaps & ~mCapsToClear;
}
void
nsHttpTransaction::SetDNSWasRefreshed()
{
MOZ_ASSERT(NS_IsMainThread(), "SetDNSWasRefreshed on main thread only!");
mCapsToClear |= NS_HTTP_REFRESH_DNS;
}
nsresult
nsHttpTransaction::ReadRequestSegment(nsIInputStream *stream,
void *closure,
const char *buf,
uint32_t offset,
uint32_t count,
uint32_t *countRead)
{
// For the tracking of sent bytes that we used to do for the networkstats
// API, please see bug 1318883 where it was removed.
nsHttpTransaction *trans = (nsHttpTransaction *) closure;
nsresult rv = trans->mReader->OnReadSegment(buf, count, countRead);
if (NS_FAILED(rv)) return rv;
LOG(("nsHttpTransaction::ReadRequestSegment %p read=%u", trans, *countRead));
trans->mSentData = true;
return NS_OK;
}
nsresult
nsHttpTransaction::ReadSegments(nsAHttpSegmentReader *reader,
uint32_t count, uint32_t *countRead)
{
LOG(("nsHttpTransaction::ReadSegments %p", this));
MOZ_ASSERT(OnSocketThread(), "not on socket thread");
if (mTransactionDone) {
*countRead = 0;
return mStatus;
}
if (!mConnected && !m0RTTInProgress) {
mConnected = true;
mConnection->GetSecurityInfo(getter_AddRefs(mSecurityInfo));
}
mDeferredSendProgress = false;
mReader = reader;
nsresult rv = mRequestStream->ReadSegments(ReadRequestSegment, this, count, countRead);
mReader = nullptr;
if (m0RTTInProgress && (mEarlyDataDisposition == EARLY_NONE) &&
NS_SUCCEEDED(rv) && (*countRead > 0)) {
mEarlyDataDisposition = EARLY_SENT;
}
if (mDeferredSendProgress && mConnection && mConnection->Transport()) {
// to avoid using mRequestStream concurrently, OnTransportStatus()
// did not report upload status off the ReadSegments() stack from nsSocketTransport
// do it now.
OnTransportStatus(mConnection->Transport(), NS_NET_STATUS_SENDING_TO, 0);
}
mDeferredSendProgress = false;
if (mForceRestart) {
// The forceRestart condition was dealt with on the stack, but it did not
// clear the flag because nsPipe in the readsegment stack clears out
// return codes, so we need to use the flag here as a cue to return ERETARGETED
if (NS_SUCCEEDED(rv)) {
rv = NS_BINDING_RETARGETED;
}
mForceRestart = false;
}
// if read would block then we need to AsyncWait on the request stream.
// have callback occur on socket thread so we stay synchronized.
if (rv == NS_BASE_STREAM_WOULD_BLOCK) {
nsCOMPtr<nsIAsyncInputStream> asyncIn =
do_QueryInterface(mRequestStream);
if (asyncIn) {
nsCOMPtr<nsIEventTarget> target;
Unused << gHttpHandler->GetSocketThreadTarget(getter_AddRefs(target));
if (target)
asyncIn->AsyncWait(this, 0, 0, target);
else {
NS_ERROR("no socket thread event target");
rv = NS_ERROR_UNEXPECTED;
}
}
}
return rv;
}
nsresult
nsHttpTransaction::WritePipeSegment(nsIOutputStream *stream,
void *closure,
char *buf,
uint32_t offset,
uint32_t count,
uint32_t *countWritten)
{
nsHttpTransaction *trans = (nsHttpTransaction *) closure;
if (trans->mTransactionDone)
return NS_BASE_STREAM_CLOSED; // stop iterating
if (trans->TimingEnabled()) {
// Set the timestamp to Now(), only if it null
trans->SetResponseStart(TimeStamp::Now(), true);
}
// Bug 1153929 - add checks to fix windows crash
MOZ_ASSERT(trans->mWriter);
if (!trans->mWriter) {
return NS_ERROR_UNEXPECTED;
}
nsresult rv;
//
// OK, now let the caller fill this segment with data.
//
rv = trans->mWriter->OnWriteSegment(buf, count, countWritten);
if (NS_FAILED(rv)) return rv; // caller didn't want to write anything
LOG(("nsHttpTransaction::WritePipeSegment %p written=%u", trans, *countWritten));
MOZ_ASSERT(*countWritten > 0, "bad writer");
trans->mReceivedData = true;
trans->mTransferSize += *countWritten;
// Let the transaction "play" with the buffer. It is free to modify
// the contents of the buffer and/or modify countWritten.
// - Bytes in HTTP headers don't count towards countWritten, so the input
// side of pipe (aka nsHttpChannel's mTransactionPump) won't hit
// OnInputStreamReady until all headers have been parsed.
//
rv = trans->ProcessData(buf, *countWritten, countWritten);
if (NS_FAILED(rv))
trans->Close(rv);
return rv; // failure code only stops WriteSegments; it is not propagated.
}
bool nsHttpTransaction::ShouldStopReading()
{
if (mActivatedAsH2) {
// Throttling feature is now disabled for http/2 transactions
// because of bug 1367861. The logic around mActivatedAsH2
// will be removed when that is fixed.
//
// Calling ShouldStopReading on the manager just to make sure
// the throttling time window is correctly updated by this transaction.
Unused << gHttpHandler->ConnMgr()->ShouldStopReading(this);
return false;
}
if (mClassOfService & nsIClassOfService::DontThrottle) {
// We deliberately don't touch the throttling window here since
// DontThrottle requests are expected to be long-standing media
// streams and would just unnecessarily block running downloads.
// If we want to ballance bandwidth for media responses against
// running downloads, we need to find something smarter like
// changing the suspend/resume throttling intervals at-runtime.
return false;
}
if (!gHttpHandler->ConnMgr()->ShouldStopReading(this)) {
// We are not obligated to throttle
return false;
}
if (mContentRead < 16000) {
// Let the first bytes go, it may also well be all the content we get
LOG(("nsHttpTransaction::ShouldStopReading too few content (%" PRIi64 ") this=%p", mContentRead, this));
return false;
}
if (gHttpHandler->ConnMgr()->IsConnEntryUnderPressure(mConnInfo)) {
LOG(("nsHttpTransaction::ShouldStopReading entry pressure this=%p", this));
// This is expensive to check (two hashtable lookups) but may help
// freeing connections for active tab transactions.
return false;
}
return true;
}
nsresult
nsHttpTransaction::WriteSegments(nsAHttpSegmentWriter *writer,
uint32_t count, uint32_t *countWritten)
{
LOG(("nsHttpTransaction::WriteSegments %p", this));
MOZ_ASSERT(OnSocketThread(), "not on socket thread");
if (mTransactionDone) {
return NS_SUCCEEDED(mStatus) ? NS_BASE_STREAM_CLOSED : mStatus;
}
if (ShouldStopReading()) {
// Must remember that we have to call ResumeRecv() on our connection when
// called back by the conn manager to resume reading.
LOG(("nsHttpTransaction::WriteSegments %p response throttled", this));
mReadingStopped = true;
// This makes the underlaying connection or stream wait for explicit resume.
// For h1 this means we stop reading from the socket.
// For h2 this means we stop updating recv window for the stream.
return NS_BASE_STREAM_WOULD_BLOCK;
}
mWriter = writer;
#ifdef WIN32 // bug 1153929
MOZ_DIAGNOSTIC_ASSERT(mPipeOut);
uint32_t * vtable = (uint32_t *) mPipeOut.get();
MOZ_DIAGNOSTIC_ASSERT(*vtable != 0);
#endif // WIN32
if (!mPipeOut) {
return NS_ERROR_UNEXPECTED;
}
nsresult rv = mPipeOut->WriteSegments(WritePipeSegment, this, count, countWritten);
mWriter = nullptr;
if (mForceRestart) {
// The forceRestart condition was dealt with on the stack, but it did not
// clear the flag because nsPipe in the writesegment stack clears out
// return codes, so we need to use the flag here as a cue to return ERETARGETED
if (NS_SUCCEEDED(rv)) {
rv = NS_BINDING_RETARGETED;
}
mForceRestart = false;
}
// if pipe would block then we need to AsyncWait on it. have callback
// occur on socket thread so we stay synchronized.
if (rv == NS_BASE_STREAM_WOULD_BLOCK) {
nsCOMPtr<nsIEventTarget> target;
Unused << gHttpHandler->GetSocketThreadTarget(getter_AddRefs(target));
if (target) {
mPipeOut->AsyncWait(this, 0, 0, target);
mWaitingOnPipeOut = true;
} else {
NS_ERROR("no socket thread event target");
rv = NS_ERROR_UNEXPECTED;
}
}
return rv;
}
void
nsHttpTransaction::Close(nsresult reason)
{
LOG(("nsHttpTransaction::Close [this=%p reason=%" PRIx32 "]\n",
this, static_cast<uint32_t>(reason)));
if (!mClosed) {
gHttpHandler->ConnMgr()->RemoveActiveTransaction(this);
mActivated = false;
}
MOZ_ASSERT(OnSocketThread(), "not on socket thread");
if (reason == NS_BINDING_RETARGETED) {
LOG((" close %p skipped due to ERETARGETED\n", this));
return;
}
if (mClosed) {
LOG((" already closed\n"));
return;
}
if (mTransactionObserver) {
mTransactionObserver->Complete(this, reason);
mTransactionObserver = nullptr;
}
if (mTokenBucketCancel) {
mTokenBucketCancel->Cancel(reason);
mTokenBucketCancel = nullptr;
}
if (mActivityDistributor) {
// report the reponse is complete if not already reported
if (!mResponseIsComplete) {
nsresult rv = mActivityDistributor->ObserveActivity(
mChannel,
NS_HTTP_ACTIVITY_TYPE_HTTP_TRANSACTION,
NS_HTTP_ACTIVITY_SUBTYPE_RESPONSE_COMPLETE,
PR_Now(),
static_cast<uint64_t>(mContentRead),
EmptyCString());
if (NS_FAILED(rv)) {
LOG3(("ObserveActivity failed (%08x)", static_cast<uint32_t>(rv)));
}
}
// report that this transaction is closing
nsresult rv = mActivityDistributor->ObserveActivity(
mChannel,
NS_HTTP_ACTIVITY_TYPE_HTTP_TRANSACTION,
NS_HTTP_ACTIVITY_SUBTYPE_TRANSACTION_CLOSE,
PR_Now(), 0, EmptyCString());
if (NS_FAILED(rv)) {
LOG3(("ObserveActivity failed (%08x)", static_cast<uint32_t>(rv)));
}
}
// we must no longer reference the connection! find out if the
// connection was being reused before letting it go.
bool connReused = false;
if (mConnection) {
connReused = mConnection->IsReused();
}
mConnected = false;
mTunnelProvider = nullptr;
//
// if the connection was reset or closed before we wrote any part of the
// request or if we wrote the request but didn't receive any part of the
// response and the connection was being reused, then we can (and really
// should) assume that we wrote to a stale connection and we must therefore
// repeat the request over a new connection.
//
// We have decided to retry not only in case of the reused connections, but
// all safe methods(bug 1236277).
//
// NOTE: the conditions under which we will automatically retry the HTTP
// request have to be carefully selected to avoid duplication of the
// request from the point-of-view of the server. such duplication could
// have dire consequences including repeated purchases, etc.
//
// NOTE: because of the way SSL proxy CONNECT is implemented, it is
// possible that the transaction may have received data without having
// sent any data. for this reason, mSendData == FALSE does not imply
// mReceivedData == FALSE. (see bug 203057 for more info.)
//
// Never restart transactions that are marked as sticky to their conenction.
// We use that capability to identify transactions bound to connection based
// authentication. Reissuing them on a different connections will break
// this bondage. Major issue may arise when there is an NTLM message auth
// header on the transaction and we send it to a different NTLM authenticated
// connection. It will break that connection and also confuse the channel's
// auth provider, beliving the cached credentials are wrong and asking for
// the password mistakenly again from the user.
if ((reason == NS_ERROR_NET_RESET ||
reason == NS_OK ||
reason == psm::GetXPCOMFromNSSError(SSL_ERROR_DOWNGRADE_WITH_EARLY_DATA)) &&
(!(mCaps & NS_HTTP_STICKY_CONNECTION) || (mCaps & NS_HTTP_CONNECTION_RESTARTABLE))) {
if (mForceRestart && NS_SUCCEEDED(Restart())) {
if (mResponseHead) {
mResponseHead->Reset();
}
mContentRead = 0;
mContentLength = -1;
delete mChunkedDecoder;
mChunkedDecoder = nullptr;
mHaveStatusLine = false;
mHaveAllHeaders = false;
mHttpResponseMatched = false;
mResponseIsComplete = false;
mDidContentStart = false;
mNoContent = false;
mSentData = false;
mReceivedData = false;
LOG(("transaction force restarted\n"));
return;
}
// reallySentData is meant to separate the instances where data has
// been sent by this transaction but buffered at a higher level while
// a TLS session (perhaps via a tunnel) is setup.
bool reallySentData =
mSentData && (!mConnection || mConnection->BytesWritten());
if (reason == psm::GetXPCOMFromNSSError(SSL_ERROR_DOWNGRADE_WITH_EARLY_DATA) ||
(!mReceivedData &&
((mRequestHead && mRequestHead->IsSafeMethod()) ||
!reallySentData || connReused))) {
// if restarting fails, then we must proceed to close the pipe,
// which will notify the channel that the transaction failed.
if (NS_SUCCEEDED(Restart()))
return;
}
}
if ((mChunkedDecoder || (mContentLength >= int64_t(0))) &&
(NS_SUCCEEDED(reason) && !mResponseIsComplete)) {
NS_WARNING("Partial transfer, incomplete HTTP response received");
if ((mHttpResponseCode / 100 == 2) &&
(mHttpVersion >= NS_HTTP_VERSION_1_1)) {
FrameCheckLevel clevel = gHttpHandler->GetEnforceH1Framing();
if (clevel >= FRAMECHECK_BARELY) {
if ((clevel == FRAMECHECK_STRICT) ||
(mChunkedDecoder && mChunkedDecoder->GetChunkRemaining()) ||
(!mChunkedDecoder && !mContentDecoding && mContentDecodingCheck) ) {
reason = NS_ERROR_NET_PARTIAL_TRANSFER;
LOG(("Partial transfer, incomplete HTTP response received: %s",
mChunkedDecoder ? "broken chunk" : "c-l underrun"));
}
}
}
if (mConnection) {
// whether or not we generate an error for the transaction
// bad framing means we don't want a pconn
mConnection->DontReuse();
}
}
bool relConn = true;
if (NS_SUCCEEDED(reason)) {
// the server has not sent the final \r\n terminating the header
// section, and there may still be a header line unparsed. let's make
// sure we parse the remaining header line, and then hopefully, the
// response will be usable (see bug 88792).
if (!mHaveAllHeaders) {
char data = '\n';
uint32_t unused;
Unused << ParseHead(&data, 1, &unused);
if (mResponseHead->Version() == NS_HTTP_VERSION_0_9) {
// Reject 0 byte HTTP/0.9 Responses - bug 423506
LOG(("nsHttpTransaction::Close %p 0 Byte 0.9 Response", this));
reason = NS_ERROR_NET_RESET;
}
}
// honor the sticky connection flag...
if (mCaps & NS_HTTP_STICKY_CONNECTION)
relConn = false;
}
// mTimings.responseEnd is normally recorded based on the end of a
// HTTP delimiter such as chunked-encodings or content-length. However,
// EOF or an error still require an end time be recorded.
if (TimingEnabled()) {
const TimingStruct timings = Timings();
if (timings.responseEnd.IsNull() && !timings.responseStart.IsNull()) {
SetResponseEnd(TimeStamp::Now());
}
}
if (relConn && mConnection) {
MutexAutoLock lock(mLock);
mConnection = nullptr;
}
mStatus = reason;
mTransactionDone = true; // forcibly flag the transaction as complete
mClosed = true;
ReleaseBlockingTransaction();
// release some resources that we no longer need
mRequestStream = nullptr;
mReqHeaderBuf.Truncate();
mLineBuf.Truncate();
if (mChunkedDecoder) {
delete mChunkedDecoder;
mChunkedDecoder = nullptr;
}
// closing this pipe triggers the channel's OnStopRequest method.
mPipeOut->CloseWithStatus(reason);
#ifdef WIN32 // bug 1153929
MOZ_DIAGNOSTIC_ASSERT(mPipeOut);
uint32_t * vtable = (uint32_t *) mPipeOut.get();
MOZ_DIAGNOSTIC_ASSERT(*vtable != 0);
mPipeOut = nullptr; // just in case
#endif // WIN32
}
nsHttpConnectionInfo *
nsHttpTransaction::ConnectionInfo()
{
return mConnInfo.get();
}
bool // NOTE BASE CLASS
nsAHttpTransaction::ResponseTimeoutEnabled() const
{
return false;
}
PRIntervalTime // NOTE BASE CLASS
nsAHttpTransaction::ResponseTimeout()
{
return gHttpHandler->ResponseTimeout();
}
bool
nsHttpTransaction::ResponseTimeoutEnabled() const
{
return mResponseTimeoutEnabled;
}
//-----------------------------------------------------------------------------
// nsHttpTransaction <private>
//-----------------------------------------------------------------------------
nsresult
nsHttpTransaction::Restart()
{
MOZ_ASSERT(OnSocketThread(), "not on socket thread");
// limit the number of restart attempts - bug 92224
if (++mRestartCount >= gHttpHandler->MaxRequestAttempts()) {
LOG(("reached max request attempts, failing transaction @%p\n", this));
return NS_ERROR_NET_RESET;
}
LOG(("restarting transaction @%p\n", this));
mTunnelProvider = nullptr;
// rewind streams in case we already wrote out the request
nsCOMPtr<nsISeekableStream> seekable = do_QueryInterface(mRequestStream);
if (seekable)
seekable->Seek(nsISeekableStream::NS_SEEK_SET, 0);
// clear old connection state...
mSecurityInfo = nullptr;
if (mConnection) {
if (!mReuseOnRestart) {
mConnection->DontReuse();
}
MutexAutoLock lock(mLock);
mConnection = nullptr;
}
// Reset this to our default state, since this may change from one restart
// to the next
mReuseOnRestart = false;
if (!mConnInfo->GetRoutedHost().IsEmpty()) {
MutexAutoLock lock(*nsHttp::GetLock());
RefPtr<nsHttpConnectionInfo> ci;
mConnInfo->CloneAsDirectRoute(getter_AddRefs(ci));
mConnInfo = ci;
if (mRequestHead) {
DebugOnly<nsresult> rv =
mRequestHead->SetHeader(nsHttp::Alternate_Service_Used,
NS_LITERAL_CSTRING("0"));
MOZ_ASSERT(NS_SUCCEEDED(rv));
}
}
return gHttpHandler->InitiateTransaction(this, mPriority);
}
char *
nsHttpTransaction::LocateHttpStart(char *buf, uint32_t len,
bool aAllowPartialMatch)
{
MOZ_ASSERT(!aAllowPartialMatch || mLineBuf.IsEmpty());
static const char HTTPHeader[] = "HTTP/1.";
static const uint32_t HTTPHeaderLen = sizeof(HTTPHeader) - 1;
static const char HTTP2Header[] = "HTTP/2.0";
static const uint32_t HTTP2HeaderLen = sizeof(HTTP2Header) - 1;
// ShoutCast ICY is treated as HTTP/1.0
static const char ICYHeader[] = "ICY ";
static const uint32_t ICYHeaderLen = sizeof(ICYHeader) - 1;
if (aAllowPartialMatch && (len < HTTPHeaderLen))
return (PL_strncasecmp(buf, HTTPHeader, len) == 0) ? buf : nullptr;
// mLineBuf can contain partial match from previous search
if (!mLineBuf.IsEmpty()) {
MOZ_ASSERT(mLineBuf.Length() < HTTPHeaderLen);
int32_t checkChars = std::min(len, HTTPHeaderLen - mLineBuf.Length());
if (PL_strncasecmp(buf, HTTPHeader + mLineBuf.Length(),
checkChars) == 0) {
mLineBuf.Append(buf, checkChars);
if (mLineBuf.Length() == HTTPHeaderLen) {
// We've found whole HTTPHeader sequence. Return pointer at the
// end of matched sequence since it is stored in mLineBuf.
return (buf + checkChars);
}
// Response matches pattern but is still incomplete.
return 0;
}
// Previous partial match together with new data doesn't match the
// pattern. Start the search again.
mLineBuf.Truncate();
}
bool firstByte = true;
while (len > 0) {
if (PL_strncasecmp(buf, HTTPHeader, std::min<uint32_t>(len, HTTPHeaderLen)) == 0) {
if (len < HTTPHeaderLen) {
// partial HTTPHeader sequence found
// save partial match to mLineBuf
mLineBuf.Assign(buf, len);
return 0;
}
// whole HTTPHeader sequence found
return buf;
}
// At least "SmarterTools/2.0.3974.16813" generates nonsensical
// HTTP/2.0 responses to our HTTP/1 requests. Treat the minimal case of
// it as HTTP/1.1 to be compatible with old versions of ourselves and
// other browsers
if (firstByte && !mInvalidResponseBytesRead && len >= HTTP2HeaderLen &&
(PL_strncasecmp(buf, HTTP2Header, HTTP2HeaderLen) == 0)) {
LOG(("nsHttpTransaction:: Identified HTTP/2.0 treating as 1.x\n"));
return buf;
}
// Treat ICY (AOL/Nullsoft ShoutCast) non-standard header in same fashion
// as HTTP/2.0 is treated above. This will allow "ICY " to be interpretted
// as HTTP/1.0 in nsHttpResponseHead::ParseVersion
if (firstByte && !mInvalidResponseBytesRead && len >= ICYHeaderLen &&
(PL_strncasecmp(buf, ICYHeader, ICYHeaderLen) == 0)) {
LOG(("nsHttpTransaction:: Identified ICY treating as HTTP/1.0\n"));
return buf;
}
if (!nsCRT::IsAsciiSpace(*buf))
firstByte = false;
buf++;
len--;
}
return 0;
}
nsresult
nsHttpTransaction::ParseLine(nsACString &line)
{
LOG(("nsHttpTransaction::ParseLine [%s]\n", PromiseFlatCString(line).get()));
nsresult rv = NS_OK;
if (!mHaveStatusLine) {
mResponseHead->ParseStatusLine(line);
mHaveStatusLine = true;
// XXX this should probably never happen
if (mResponseHead->Version() == NS_HTTP_VERSION_0_9)
mHaveAllHeaders = true;
}
else {
rv = mResponseHead->ParseHeaderLine(line);
}
return rv;
}
nsresult
nsHttpTransaction::ParseLineSegment(char *segment, uint32_t len)
{
NS_PRECONDITION(!mHaveAllHeaders, "already have all headers");
if (!mLineBuf.IsEmpty() && mLineBuf.Last() == '\n') {
// trim off the new line char, and if this segment is
// not a continuation of the previous or if we haven't
// parsed the status line yet, then parse the contents
// of mLineBuf.
mLineBuf.Truncate(mLineBuf.Length() - 1);
if (!mHaveStatusLine || (*segment != ' ' && *segment != '\t')) {
nsresult rv = ParseLine(mLineBuf);
mLineBuf.Truncate();
if (NS_FAILED(rv)) {
return rv;
}
}
}
// append segment to mLineBuf...
mLineBuf.Append(segment, len);
// a line buf with only a new line char signifies the end of headers.
if (mLineBuf.First() == '\n') {
mLineBuf.Truncate();
// discard this response if it is a 100 continue or other 1xx status.
uint16_t status = mResponseHead->Status();
if ((status != 101) && (status / 100 == 1)) {
LOG(("ignoring 1xx response\n"));
mHaveStatusLine = false;
mHttpResponseMatched = false;
mConnection->SetLastTransactionExpectedNoContent(true);
mResponseHead->Reset();
return NS_OK;
}
mHaveAllHeaders = true;
}
return NS_OK;
}
nsresult
nsHttpTransaction::ParseHead(char *buf,
uint32_t count,
uint32_t *countRead)
{
nsresult rv;
uint32_t len;
char *eol;
LOG(("nsHttpTransaction::ParseHead [count=%u]\n", count));
*countRead = 0;
NS_PRECONDITION(!mHaveAllHeaders, "oops");
// allocate the response head object if necessary
if (!mResponseHead) {
mResponseHead = new nsHttpResponseHead();
if (!mResponseHead)
return NS_ERROR_OUT_OF_MEMORY;
// report that we have a least some of the response
if (mActivityDistributor && !mReportedStart) {
mReportedStart = true;
rv = mActivityDistributor->ObserveActivity(
mChannel,
NS_HTTP_ACTIVITY_TYPE_HTTP_TRANSACTION,
NS_HTTP_ACTIVITY_SUBTYPE_RESPONSE_START,
PR_Now(), 0, EmptyCString());
if (NS_FAILED(rv)) {
LOG3(("ObserveActivity failed (%08x)",
static_cast<uint32_t>(rv)));
}
}
}
if (!mHttpResponseMatched) {
// Normally we insist on seeing HTTP/1.x in the first few bytes,
// but if we are on a persistent connection and the previous transaction
// was not supposed to have any content then we need to be prepared
// to skip over a response body that the server may have sent even
// though it wasn't allowed.
if (!mConnection || !mConnection->LastTransactionExpectedNoContent()) {
// tolerate only minor junk before the status line
mHttpResponseMatched = true;
char *p = LocateHttpStart(buf, std::min<uint32_t>(count, 11), true);
if (!p) {
// Treat any 0.9 style response of a put as a failure.
if (mRequestHead->IsPut())
return NS_ERROR_ABORT;
mResponseHead->ParseStatusLine(EmptyCString());
mHaveStatusLine = true;
mHaveAllHeaders = true;
return NS_OK;
}
if (p > buf) {
// skip over the junk
mInvalidResponseBytesRead += p - buf;
*countRead = p - buf;
buf = p;
}
}
else {
char *p = LocateHttpStart(buf, count, false);
if (p) {
mInvalidResponseBytesRead += p - buf;
*countRead = p - buf;
buf = p;
mHttpResponseMatched = true;
} else {
mInvalidResponseBytesRead += count;
*countRead = count;
if (mInvalidResponseBytesRead > MAX_INVALID_RESPONSE_BODY_SIZE) {
LOG(("nsHttpTransaction::ParseHead() "
"Cannot find Response Header\n"));
// cannot go back and call this 0.9 anymore as we
// have thrown away a lot of the leading junk
return NS_ERROR_ABORT;
}
return NS_OK;
}
}
}
// otherwise we can assume that we don't have a HTTP/0.9 response.
MOZ_ASSERT (mHttpResponseMatched);
while ((eol = static_cast<char *>(memchr(buf, '\n', count - *countRead))) != nullptr) {
// found line in range [buf:eol]
len = eol - buf + 1;
*countRead += len;
// actually, the line is in the range [buf:eol-1]
if ((eol > buf) && (*(eol-1) == '\r'))
len--;
buf[len-1] = '\n';
rv = ParseLineSegment(buf, len);
if (NS_FAILED(rv))
return rv;
if (mHaveAllHeaders)
return NS_OK;
// skip over line
buf = eol + 1;
if (!mHttpResponseMatched) {
// a 100 class response has caused us to throw away that set of
// response headers and look for the next response
return NS_ERROR_NET_INTERRUPT;
}
}
// do something about a partial header line
if (!mHaveAllHeaders && (len = count - *countRead)) {
*countRead = count;
// ignore a trailing carriage return, and don't bother calling
// ParseLineSegment if buf only contains a carriage return.
if ((buf[len-1] == '\r') && (--len == 0))
return NS_OK;
rv = ParseLineSegment(buf, len);
if (NS_FAILED(rv))
return rv;
}
return NS_OK;
}
nsresult
nsHttpTransaction::HandleContentStart()
{
LOG(("nsHttpTransaction::HandleContentStart [this=%p]\n", this));
MOZ_ASSERT(OnSocketThread(), "not on socket thread");
if (mResponseHead) {
if (mEarlyDataDisposition == EARLY_ACCEPTED) {
Unused << mResponseHead->SetHeader(nsHttp::X_Firefox_Early_Data, NS_LITERAL_CSTRING("accepted"));
} else if (mEarlyDataDisposition == EARLY_SENT) {
Unused << mResponseHead->SetHeader(nsHttp::X_Firefox_Early_Data, NS_LITERAL_CSTRING("sent"));
} // no header on NONE case
if (mFastOpenStatus == TFO_DATA_SENT) {
Unused << mResponseHead->SetHeader(nsHttp::X_Firefox_TCP_Fast_Open, NS_LITERAL_CSTRING("data sent"));
} else if (mFastOpenStatus == TFO_TRIED) {
Unused << mResponseHead->SetHeader(nsHttp::X_Firefox_TCP_Fast_Open, NS_LITERAL_CSTRING("tried negotiating"));
} else if (mFastOpenStatus == TFO_FAILED) {
Unused << mResponseHead->SetHeader(nsHttp::X_Firefox_TCP_Fast_Open, NS_LITERAL_CSTRING("failed"));
} // no header on TFO_NOT_TRIED case
if (LOG3_ENABLED()) {
LOG3(("http response [\n"));
nsAutoCString headers;
mResponseHead->Flatten(headers, false);
headers.AppendLiteral(" OriginalHeaders");
headers.AppendLiteral("\r\n");
mResponseHead->FlattenNetworkOriginalHeaders(headers);
LogHeaders(headers.get());
LOG3(("]\n"));
}
CheckForStickyAuthScheme();
// Save http version, mResponseHead isn't available anymore after
// TakeResponseHead() is called
mHttpVersion = mResponseHead->Version();
mHttpResponseCode = mResponseHead->Status();
// notify the connection, give it a chance to cause a reset.
bool reset = false;
nsresult rv = mConnection->OnHeadersAvailable(this, mRequestHead,
mResponseHead, &reset);
NS_ENSURE_SUCCESS(rv, rv);
// looks like we should ignore this response, resetting...
if (reset) {
LOG(("resetting transaction's response head\n"));
mHaveAllHeaders = false;
mHaveStatusLine = false;
mReceivedData = false;
mSentData = false;
mHttpResponseMatched = false;
mResponseHead->Reset();
// wait to be called again...
return NS_OK;
}
// check if this is a no-content response
switch (mResponseHead->Status()) {
case 101:
mPreserveStream = true;
MOZ_FALLTHROUGH; // to other no content cases:
case 204:
case 205:
case 304:
mNoContent = true;
LOG(("this response should not contain a body.\n"));
break;
case 421:
LOG(("Misdirected Request.\n"));
gHttpHandler->ConnMgr()->ClearHostMapping(mConnInfo);
// retry on a new connection - just in case
if (!mRestartCount) {
mCaps &= ~NS_HTTP_ALLOW_KEEPALIVE;
mForceRestart = true; // force restart has built in loop protection
return NS_ERROR_NET_RESET;
}
break;
}
if (mResponseHead->Status() == 200 &&
mConnection->IsProxyConnectInProgress()) {
// successful CONNECTs do not have response bodies
mNoContent = true;
}
mConnection->SetLastTransactionExpectedNoContent(mNoContent);
if (mNoContent) {
mContentLength = 0;
} else {
// grab the content-length from the response headers
mContentLength = mResponseHead->ContentLength();
// handle chunked encoding here, so we'll know immediately when
// we're done with the socket. please note that _all_ other
// decoding is done when the channel receives the content data
// so as not to block the socket transport thread too much.
if (mResponseHead->Version() >= NS_HTTP_VERSION_1_0 &&
mResponseHead->HasHeaderValue(nsHttp::Transfer_Encoding, "chunked")) {
// we only support the "chunked" transfer encoding right now.
mChunkedDecoder = new nsHttpChunkedDecoder();
LOG(("nsHttpTransaction %p chunked decoder created\n", this));
// Ignore server specified Content-Length.
if (mContentLength != int64_t(-1)) {
LOG(("nsHttpTransaction %p chunked with C-L ignores C-L\n", this));
mContentLength = -1;
if (mConnection) {
mConnection->DontReuse();
}
}
}
else if (mContentLength == int64_t(-1))
LOG(("waiting for the server to close the connection.\n"));
}
}
mDidContentStart = true;
return NS_OK;
}
// called on the socket thread
nsresult
nsHttpTransaction::HandleContent(char *buf,
uint32_t count,
uint32_t *contentRead,
uint32_t *contentRemaining)
{
nsresult rv;
LOG(("nsHttpTransaction::HandleContent [this=%p count=%u]\n", this, count));
*contentRead = 0;
*contentRemaining = 0;
MOZ_ASSERT(mConnection);
if (!mDidContentStart) {
rv = HandleContentStart();
if (NS_FAILED(rv)) return rv;
// Do not write content to the pipe if we haven't started streaming yet
if (!mDidContentStart)
return NS_OK;
}
if (mChunkedDecoder) {
// give the buf over to the chunked decoder so it can reformat the
// data and tell us how much is really there.
rv = mChunkedDecoder->HandleChunkedContent(buf, count, contentRead, contentRemaining);
if (NS_FAILED(rv)) return rv;
}
else if (mContentLength >= int64_t(0)) {
// HTTP/1.0 servers have been known to send erroneous Content-Length
// headers. So, unless the connection is persistent, we must make
// allowances for a possibly invalid Content-Length header. Thus, if
// NOT persistent, we simply accept everything in |buf|.
if (mConnection->IsPersistent() || mPreserveStream ||
mHttpVersion >= NS_HTTP_VERSION_1_1) {
int64_t remaining = mContentLength - mContentRead;
*contentRead = uint32_t(std::min<int64_t>(count, remaining));
*contentRemaining = count - *contentRead;
}
else {
*contentRead = count;
// mContentLength might need to be increased...
int64_t position = mContentRead + int64_t(count);
if (position > mContentLength) {
mContentLength = position;
//mResponseHead->SetContentLength(mContentLength);
}
}
}
else {
// when we are just waiting for the server to close the connection...
// (no explicit content-length given)
*contentRead = count;
}
if (*contentRead) {
// update count of content bytes read and report progress...
mContentRead += *contentRead;
}
LOG(("nsHttpTransaction::HandleContent [this=%p count=%u read=%u mContentRead=%" PRId64 " mContentLength=%" PRId64 "]\n",
this, count, *contentRead, mContentRead, mContentLength));
// check for end-of-file
if ((mContentRead == mContentLength) ||
(mChunkedDecoder && mChunkedDecoder->ReachedEOF())) {
// the transaction is done with a complete response.
mTransactionDone = true;
mResponseIsComplete = true;
ReleaseBlockingTransaction();
if (TimingEnabled()) {
SetResponseEnd(TimeStamp::Now());
}
// report the entire response has arrived
if (mActivityDistributor) {
rv = mActivityDistributor->ObserveActivity(
mChannel,
NS_HTTP_ACTIVITY_TYPE_HTTP_TRANSACTION,
NS_HTTP_ACTIVITY_SUBTYPE_RESPONSE_COMPLETE,
PR_Now(),
static_cast<uint64_t>(mContentRead),
EmptyCString());
if (NS_FAILED(rv)) {
LOG3(("ObserveActivity failed (%08x)",
static_cast<uint32_t>(rv)));
}
}
}
return NS_OK;
}
nsresult
nsHttpTransaction::ProcessData(char *buf, uint32_t count, uint32_t *countRead)
{
nsresult rv;
LOG(("nsHttpTransaction::ProcessData [this=%p count=%u]\n", this, count));
*countRead = 0;
// we may not have read all of the headers yet...
if (!mHaveAllHeaders) {
uint32_t bytesConsumed = 0;
do {
uint32_t localBytesConsumed = 0;
char *localBuf = buf + bytesConsumed;
uint32_t localCount = count - bytesConsumed;
rv = ParseHead(localBuf, localCount, &localBytesConsumed);
if (NS_FAILED(rv) && rv != NS_ERROR_NET_INTERRUPT)
return rv;
bytesConsumed += localBytesConsumed;
} while (rv == NS_ERROR_NET_INTERRUPT);
mCurrentHttpResponseHeaderSize += bytesConsumed;
if (mCurrentHttpResponseHeaderSize >
gHttpHandler->MaxHttpResponseHeaderSize()) {
LOG(("nsHttpTransaction %p The response header exceeds the limit.\n",
this));
return NS_ERROR_FILE_TOO_BIG;
}
count -= bytesConsumed;
// if buf has some content in it, shift bytes to top of buf.
if (count && bytesConsumed)
memmove(buf, buf + bytesConsumed, count);
// report the completed response header
if (mActivityDistributor && mResponseHead && mHaveAllHeaders &&
!mReportedResponseHeader) {
mReportedResponseHeader = true;
nsAutoCString completeResponseHeaders;
mResponseHead->Flatten(completeResponseHeaders, false);
completeResponseHeaders.AppendLiteral("\r\n");
rv = mActivityDistributor->ObserveActivity(
mChannel,
NS_HTTP_ACTIVITY_TYPE_HTTP_TRANSACTION,
NS_HTTP_ACTIVITY_SUBTYPE_RESPONSE_HEADER,
PR_Now(), 0,
completeResponseHeaders);
if (NS_FAILED(rv)) {
LOG3(("ObserveActivity failed (%08x)",
static_cast<uint32_t>(rv)));
}
}
}
// even though count may be 0, we still want to call HandleContent
// so it can complete the transaction if this is a "no-content" response.
if (mHaveAllHeaders) {
uint32_t countRemaining = 0;
//
// buf layout:
//
// +--------------------------------------+----------------+-----+
// | countRead | countRemaining | |
// +--------------------------------------+----------------+-----+
//
// count : bytes read from the socket
// countRead : bytes corresponding to this transaction
// countRemaining : bytes corresponding to next transaction on conn
//
// NOTE:
// count > countRead + countRemaining <==> chunked transfer encoding
//
rv = HandleContent(buf, count, countRead, &countRemaining);
if (NS_FAILED(rv)) return rv;
// we may have read more than our share, in which case we must give
// the excess bytes back to the connection
if (mResponseIsComplete && countRemaining) {
MOZ_ASSERT(mConnection);
rv = mConnection->PushBack(buf + *countRead, countRemaining);
NS_ENSURE_SUCCESS(rv, rv);
}
if (!mContentDecodingCheck && mResponseHead) {
mContentDecoding =
mResponseHead->HasHeader(nsHttp::Content_Encoding);
mContentDecodingCheck = true;
}
}
return NS_OK;
}
void
nsHttpTransaction::SetRequestContext(nsIRequestContext *aRequestContext)
{
LOG(("nsHttpTransaction %p SetRequestContext %p\n", this, aRequestContext));
mRequestContext = aRequestContext;
}
// Called when the transaction marked for blocking is associated with a connection
// (i.e. added to a new h1 conn, an idle http connection, etc..)
// It is safe to call this multiple times with it only
// having an effect once.
void
nsHttpTransaction::DispatchedAsBlocking()
{
if (mDispatchedAsBlocking)
return;
LOG(("nsHttpTransaction %p dispatched as blocking\n", this));
if (!mRequestContext)
return;
LOG(("nsHttpTransaction adding blocking transaction %p from "
"request context %p\n", this, mRequestContext.get()));
mRequestContext->AddBlockingTransaction();
mDispatchedAsBlocking = true;
}
void
nsHttpTransaction::RemoveDispatchedAsBlocking()
{
if (!mRequestContext || !mDispatchedAsBlocking) {
LOG(("nsHttpTransaction::RemoveDispatchedAsBlocking this=%p not blocking",
this));
return;
}
uint32_t blockers = 0;
nsresult rv = mRequestContext->RemoveBlockingTransaction(&blockers);
LOG(("nsHttpTransaction removing blocking transaction %p from "
"request context %p. %d blockers remain.\n", this,
mRequestContext.get(), blockers));
if (NS_SUCCEEDED(rv) && !blockers) {
LOG(("nsHttpTransaction %p triggering release of blocked channels "
" with request context=%p\n", this, mRequestContext.get()));
rv = gHttpHandler->ConnMgr()->ProcessPendingQ();
if (NS_FAILED(rv)) {
LOG(("nsHttpTransaction::RemoveDispatchedAsBlocking\n"
" failed to process pending queue\n"));
}
}
mDispatchedAsBlocking = false;
}
void
nsHttpTransaction::ReleaseBlockingTransaction()
{
RemoveDispatchedAsBlocking();
LOG(("nsHttpTransaction %p request context set to null "
"in ReleaseBlockingTransaction() - was %p\n", this, mRequestContext.get()));
mRequestContext = nullptr;
}
void
nsHttpTransaction::DisableSpdy()
{
mCaps |= NS_HTTP_DISALLOW_SPDY;
if (mConnInfo) {
// This is our clone of the connection info, not the persistent one that
// is owned by the connection manager, so we're safe to change this here
mConnInfo->SetNoSpdy(true);
}
}
void
nsHttpTransaction::CheckForStickyAuthScheme()
{
LOG(("nsHttpTransaction::CheckForStickyAuthScheme this=%p", this));
MOZ_ASSERT(mHaveAllHeaders);
MOZ_ASSERT(mResponseHead);
MOZ_ASSERT(OnSocketThread(), "not on socket thread");
CheckForStickyAuthSchemeAt(nsHttp::WWW_Authenticate);
CheckForStickyAuthSchemeAt(nsHttp::Proxy_Authenticate);
}
void
nsHttpTransaction::CheckForStickyAuthSchemeAt(nsHttpAtom const& header)
{
if (mCaps & NS_HTTP_STICKY_CONNECTION) {
LOG((" already sticky"));
return;
}
nsAutoCString auth;
if (NS_FAILED(mResponseHead->GetHeader(header, auth))) {
return;
}
Tokenizer p(auth);
nsAutoCString schema;
while (p.ReadWord(schema)) {
ToLowerCase(schema);
nsAutoCString contractid;
contractid.Assign(NS_HTTP_AUTHENTICATOR_CONTRACTID_PREFIX);
contractid.Append(schema);
// using a new instance because of thread safety of auth modules refcnt
nsCOMPtr<nsIHttpAuthenticator> authenticator(do_CreateInstance(contractid.get()));
if (authenticator) {
uint32_t flags;
nsresult rv = authenticator->GetAuthFlags(&flags);
if (NS_SUCCEEDED(rv) && (flags & nsIHttpAuthenticator::CONNECTION_BASED)) {
LOG((" connection made sticky, found %s auth shema", schema.get()));
// This is enough to make this transaction keep it's current connection,
// prevents the connection from being released back to the pool.
mCaps |= NS_HTTP_STICKY_CONNECTION;
break;
}
}
// schemes are separated with LFs, nsHttpHeaderArray::MergeHeader
p.SkipUntil(Tokenizer::Token::NewLine());
p.SkipWhites(Tokenizer::INCLUDE_NEW_LINE);
}
}
const TimingStruct
nsHttpTransaction::Timings()
{
mozilla::MutexAutoLock lock(mLock);
TimingStruct timings = mTimings;
return timings;
}
void
nsHttpTransaction::BootstrapTimings(TimingStruct times)
{
mozilla::MutexAutoLock lock(mLock);
mTimings = times;
}
void
nsHttpTransaction::SetDomainLookupStart(mozilla::TimeStamp timeStamp, bool onlyIfNull)
{
mozilla::MutexAutoLock lock(mLock);
if (onlyIfNull && !mTimings.domainLookupStart.IsNull()) {
return; // We only set the timestamp if it was previously null
}
mTimings.domainLookupStart = timeStamp;
}
void
nsHttpTransaction::SetDomainLookupEnd(mozilla::TimeStamp timeStamp, bool onlyIfNull)
{
mozilla::MutexAutoLock lock(mLock);
if (onlyIfNull && !mTimings.domainLookupEnd.IsNull()) {
return; // We only set the timestamp if it was previously null
}
mTimings.domainLookupEnd = timeStamp;
}
void
nsHttpTransaction::SetConnectStart(mozilla::TimeStamp timeStamp, bool onlyIfNull)
{
mozilla::MutexAutoLock lock(mLock);
if (onlyIfNull && !mTimings.connectStart.IsNull()) {
return; // We only set the timestamp if it was previously null
}
mTimings.connectStart = timeStamp;
}
void
nsHttpTransaction::SetConnectEnd(mozilla::TimeStamp timeStamp, bool onlyIfNull)
{
mozilla::MutexAutoLock lock(mLock);
if (onlyIfNull && !mTimings.connectEnd.IsNull()) {
return; // We only set the timestamp if it was previously null
}
mTimings.connectEnd = timeStamp;
}
void
nsHttpTransaction::SetRequestStart(mozilla::TimeStamp timeStamp, bool onlyIfNull)
{
mozilla::MutexAutoLock lock(mLock);
if (onlyIfNull && !mTimings.requestStart.IsNull()) {
return; // We only set the timestamp if it was previously null
}
mTimings.requestStart = timeStamp;
}
void
nsHttpTransaction::SetResponseStart(mozilla::TimeStamp timeStamp, bool onlyIfNull)
{
mozilla::MutexAutoLock lock(mLock);
if (onlyIfNull && !mTimings.responseStart.IsNull()) {
return; // We only set the timestamp if it was previously null
}
mTimings.responseStart = timeStamp;
}
void
nsHttpTransaction::SetResponseEnd(mozilla::TimeStamp timeStamp, bool onlyIfNull)
{
mozilla::MutexAutoLock lock(mLock);
if (onlyIfNull && !mTimings.responseEnd.IsNull()) {
return; // We only set the timestamp if it was previously null
}
mTimings.responseEnd = timeStamp;
}
mozilla::TimeStamp
nsHttpTransaction::GetDomainLookupStart()
{
mozilla::MutexAutoLock lock(mLock);
return mTimings.domainLookupStart;
}
mozilla::TimeStamp
nsHttpTransaction::GetDomainLookupEnd()
{
mozilla::MutexAutoLock lock(mLock);
return mTimings.domainLookupEnd;
}
mozilla::TimeStamp
nsHttpTransaction::GetConnectStart()
{
mozilla::MutexAutoLock lock(mLock);
return mTimings.connectStart;
}
mozilla::TimeStamp
nsHttpTransaction::GetSecureConnectionStart()
{
mozilla::MutexAutoLock lock(mLock);
return mTimings.secureConnectionStart;
}
mozilla::TimeStamp
nsHttpTransaction::GetConnectEnd()
{
mozilla::MutexAutoLock lock(mLock);
return mTimings.connectEnd;
}
mozilla::TimeStamp
nsHttpTransaction::GetRequestStart()
{
mozilla::MutexAutoLock lock(mLock);
return mTimings.requestStart;
}
mozilla::TimeStamp
nsHttpTransaction::GetResponseStart()
{
mozilla::MutexAutoLock lock(mLock);
return mTimings.responseStart;
}
mozilla::TimeStamp
nsHttpTransaction::GetResponseEnd()
{
mozilla::MutexAutoLock lock(mLock);
return mTimings.responseEnd;
}
//-----------------------------------------------------------------------------
// nsHttpTransaction deletion event
//-----------------------------------------------------------------------------
class DeleteHttpTransaction : public Runnable {
public:
explicit DeleteHttpTransaction(nsHttpTransaction* trans)
: Runnable("net::DeleteHttpTransaction")
, mTrans(trans)
{
}
NS_IMETHOD Run() override
{
delete mTrans;
return NS_OK;
}
private:
nsHttpTransaction *mTrans;
};
void
nsHttpTransaction::DeleteSelfOnConsumerThread()
{
LOG(("nsHttpTransaction::DeleteSelfOnConsumerThread [this=%p]\n", this));
bool val;
if (!mConsumerTarget ||
(NS_SUCCEEDED(mConsumerTarget->IsOnCurrentThread(&val)) && val)) {
delete this;
} else {
LOG(("proxying delete to consumer thread...\n"));
nsCOMPtr<nsIRunnable> event = new DeleteHttpTransaction(this);
if (NS_FAILED(mConsumerTarget->Dispatch(event, NS_DISPATCH_NORMAL)))
NS_WARNING("failed to dispatch nsHttpDeleteTransaction event");
}
}
bool
nsHttpTransaction::TryToRunPacedRequest()
{
if (mSubmittedRatePacing)
return mPassedRatePacing;
mSubmittedRatePacing = true;
mSynchronousRatePaceRequest = true;
Unused << gHttpHandler->SubmitPacedRequest(this, getter_AddRefs(mTokenBucketCancel));
mSynchronousRatePaceRequest = false;
return mPassedRatePacing;
}
void
nsHttpTransaction::OnTokenBucketAdmitted()
{
mPassedRatePacing = true;
mTokenBucketCancel = nullptr;
if (!mSynchronousRatePaceRequest) {
nsresult rv = gHttpHandler->ConnMgr()->ProcessPendingQ(mConnInfo);
if (NS_FAILED(rv)) {
LOG(("nsHttpTransaction::OnTokenBucketAdmitted\n"
" failed to process pending queue\n"));
}
}
}
void
nsHttpTransaction::CancelPacing(nsresult reason)
{
if (mTokenBucketCancel) {
mTokenBucketCancel->Cancel(reason);
mTokenBucketCancel = nullptr;
}
}
//-----------------------------------------------------------------------------
// nsHttpTransaction::nsISupports
//-----------------------------------------------------------------------------
NS_IMPL_ADDREF(nsHttpTransaction)
NS_IMETHODIMP_(MozExternalRefCountType)
nsHttpTransaction::Release()
{
nsrefcnt count;
NS_PRECONDITION(0 != mRefCnt, "dup release");
count = --mRefCnt;
NS_LOG_RELEASE(this, count, "nsHttpTransaction");
if (0 == count) {
mRefCnt = 1; /* stablize */
// it is essential that the transaction be destroyed on the consumer
// thread (we could be holding the last reference to our consumer).
DeleteSelfOnConsumerThread();
return 0;
}
return count;
}
NS_IMPL_QUERY_INTERFACE(nsHttpTransaction,
nsIInputStreamCallback,
nsIOutputStreamCallback)
//-----------------------------------------------------------------------------
// nsHttpTransaction::nsIInputStreamCallback
//-----------------------------------------------------------------------------
// called on the socket thread
NS_IMETHODIMP
nsHttpTransaction::OnInputStreamReady(nsIAsyncInputStream *out)
{
MOZ_ASSERT(OnSocketThread(), "not on socket thread");
if (mConnection) {
mConnection->TransactionHasDataToWrite(this);
nsresult rv = mConnection->ResumeSend();
if (NS_FAILED(rv))
NS_ERROR("ResumeSend failed");
}
return NS_OK;
}
//-----------------------------------------------------------------------------
// nsHttpTransaction::nsIOutputStreamCallback
//-----------------------------------------------------------------------------
// called on the socket thread
NS_IMETHODIMP
nsHttpTransaction::OnOutputStreamReady(nsIAsyncOutputStream *out)
{
MOZ_ASSERT(OnSocketThread(), "not on socket thread");
mWaitingOnPipeOut = false;
if (mConnection) {
mConnection->TransactionHasDataToRecv(this);
nsresult rv = mConnection->ResumeRecv();
if (NS_FAILED(rv))
NS_ERROR("ResumeRecv failed");
}
return NS_OK;
}
void
nsHttpTransaction::GetNetworkAddresses(NetAddr &self, NetAddr &peer)
{
MutexAutoLock lock(mLock);
self = mSelfAddr;
peer = mPeerAddr;
}
bool
nsHttpTransaction::CanDo0RTT()
{
if (mRequestHead->IsSafeMethod() &&
(!mConnection ||
!mConnection->IsProxyConnectInProgress())) {
return true;
}
return false;
}
bool
nsHttpTransaction::Do0RTT()
{
if (mRequestHead->IsSafeMethod() &&
(!mConnection ||
!mConnection->IsProxyConnectInProgress())) {
m0RTTInProgress = true;
}
return m0RTTInProgress;
}
nsresult
nsHttpTransaction::Finish0RTT(bool aRestart, bool aAlpnChanged /* ignored */)
{
LOG(("nsHttpTransaction::Finish0RTT %p %d %d\n", this, aRestart, aAlpnChanged));
MOZ_ASSERT(m0RTTInProgress);
m0RTTInProgress = false;
if (!aRestart && (mEarlyDataDisposition == EARLY_SENT)) {
// note that if this is invoked by a 3 param version of finish0rtt this
// disposition might be reverted
mEarlyDataDisposition = EARLY_ACCEPTED;
}
if (aRestart) {
// Reset request headers to be sent again.
nsCOMPtr<nsISeekableStream> seekable =
do_QueryInterface(mRequestStream);
if (seekable) {
seekable->Seek(nsISeekableStream::NS_SEEK_SET, 0);
} else {
return NS_ERROR_FAILURE;
}
} else if (!mConnected) {
// this is code that was skipped in ::ReadSegments while in 0RTT
mConnected = true;
mConnection->GetSecurityInfo(getter_AddRefs(mSecurityInfo));
}
return NS_OK;
}
nsresult
nsHttpTransaction::RestartOnFastOpenError()
{
// This will happen on connection error during Fast Open or if connect
// during Fast Open takes too long. So we should not have received any
// data!
MOZ_ASSERT(!mReceivedData);
MOZ_ASSERT(OnSocketThread(), "not on socket thread");
LOG(("nsHttpTransaction::RestartOnFastOpenError - restarting transaction "
"%p\n", this));
// rewind streams in case we already wrote out the request
nsCOMPtr<nsISeekableStream> seekable = do_QueryInterface(mRequestStream);
if (seekable)
seekable->Seek(nsISeekableStream::NS_SEEK_SET, 0);
// clear old connection state...
mSecurityInfo = nullptr;
if (!mConnInfo->GetRoutedHost().IsEmpty()) {
MutexAutoLock lock(*nsHttp::GetLock());
RefPtr<nsHttpConnectionInfo> ci;
mConnInfo->CloneAsDirectRoute(getter_AddRefs(ci));
mConnInfo = ci;
}
mEarlyDataDisposition = EARLY_NONE;
m0RTTInProgress = false;
mFastOpenStatus = TFO_FAILED;
return NS_OK;
}
void
nsHttpTransaction::SetFastOpenStatus(uint8_t aStatus)
{
LOG(("nsHttpTransaction::SetFastOpenStatus %d [this=%p]\n",
aStatus, this));
mFastOpenStatus = aStatus;
}
void
nsHttpTransaction::Refused0RTT()
{
LOG(("nsHttpTransaction::Refused0RTT %p\n", this));
if (mEarlyDataDisposition == EARLY_ACCEPTED) {
mEarlyDataDisposition = EARLY_SENT; // undo accepted state
}
}
} // namespace net
} // namespace mozilla
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