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bug 865314 - ssl parallelism to new host should not be 1 r=hurley

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This commit is contained in:
Patrick McManus 2014-01-30 03:56:36 -05:00
parent 32bfb31496
commit 9b527df74c
7 changed files with 64 additions and 57 deletions
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9
netwerk/base/public/nsISpeculativeConnect.idl
View File

@ -35,7 +35,7 @@ interface nsISpeculativeConnect : nsISupports
* inline) to determine whether or not to actually make a speculative
* connection.
*/
[builtinclass, uuid(f6a0d1e5-369f-4abc-81ae-d370d36e4006)]
[builtinclass, uuid(1040ebe3-6ed1-45a6-8587-995e082518d7)]
interface nsISpeculativeConnectionOverrider : nsISupports
{
/**
@ -44,13 +44,6 @@ interface nsISpeculativeConnectionOverrider : nsISupports
*/
[infallible] readonly attribute unsigned long parallelSpeculativeConnectLimit;
/**
* Used to loosen the restrictions nsHttpConnectionMgr::RestrictConnections
* to allow more speculative connections when we're unsure if a host will
* connect via SPDY or not.
*/
[infallible] readonly attribute boolean ignorePossibleSpdyConnections;
/**
* Used to determine if we will ignore the existence of any currently idle
* connections when we decide whether or not to make a speculative

7
netwerk/base/src/Predictor.cpp
View File

@ -373,13 +373,6 @@ Predictor::GetIgnoreIdle(bool *ignoreIdle)
return NS_OK;
}
NS_IMETHODIMP
Predictor::GetIgnorePossibleSpdyConnections(bool *ignorePossibleSpdyConnections)
{
*ignorePossibleSpdyConnections = true;
return NS_OK;
}
NS_IMETHODIMP
Predictor::GetParallelSpeculativeConnectLimit(
uint32_t *parallelSpeculativeConnectLimit)

7
netwerk/protocol/http/AlternateServices.cpp
View File

@ -414,13 +414,6 @@ AltSvcOverride::GetIgnoreIdle(bool *ignoreIdle)
return NS_OK;
}
NS_IMETHODIMP
AltSvcOverride::GetIgnorePossibleSpdyConnections(bool *ignorePossibleSpdyConnections)
{
*ignorePossibleSpdyConnections = true;
return NS_OK;
}
NS_IMETHODIMP
AltSvcOverride::GetParallelSpeculativeConnectLimit(
uint32_t *parallelSpeculativeConnectLimit)

4
netwerk/protocol/http/ConnectionDiagnostics.cpp
View File

@ -73,8 +73,8 @@ nsHttpConnectionMgr::PrintDiagnosticsCB(const nsACString &key,
ent->mHalfOpens.Length());
self->mLogData.AppendPrintf(" Coalescing Key = %s\n",
ent->mCoalescingKey.get());
self->mLogData.AppendPrintf(" Spdy using = %d, tested = %d, preferred = %d\n",
ent->mUsingSpdy, ent->mTestedSpdy, ent->mSpdyPreferred);
self->mLogData.AppendPrintf(" Spdy using = %d, preferred = %d\n",
ent->mUsingSpdy, ent->mSpdyPreferred);
self->mLogData.AppendPrintf(" pipelinestate = %d penalty = %d\n",
ent->mPipelineState, ent->mPipeliningPenalty);
for (i = 0; i < nsAHttpTransaction::CLASS_MAX; ++i) {

2
netwerk/protocol/http/nsHttpConnection.cpp
View File

@ -159,6 +159,7 @@ nsHttpConnection::StartSpdy(uint8_t spdyVersion)
mUsingSpdyVersion = spdyVersion;
mEverUsedSpdy = true;
mSpdySession = ASpdySession::NewSpdySession(spdyVersion, mSocketTransport);
if (!mReportedSpdy) {
mReportedSpdy = true;
@ -209,7 +210,6 @@ nsHttpConnection::StartSpdy(uint8_t spdyVersion)
mProxyConnectInProgress = false;
}
mSpdySession = ASpdySession::NewSpdySession(spdyVersion, mSocketTransport);
bool spdyProxy = mConnInfo->UsingHttpsProxy() && !mTLSFilter;
if (spdyProxy) {
nsRefPtr<nsHttpConnectionInfo> wildCardProxyCi;

84
netwerk/protocol/http/nsHttpConnectionMgr.cpp
View File

@ -380,7 +380,6 @@ public: // intentional!
bool mOverridesOK;
uint32_t mParallelSpeculativeConnectLimit;
bool mIgnoreIdle;
bool mIgnorePossibleSpdyConnections;
bool mIsFromPredictor;
bool mAllow1918;
@ -437,8 +436,6 @@ nsHttpConnectionMgr::SpeculativeConnect(nsHttpConnectionInfo *ci,
overrider->GetParallelSpeculativeConnectLimit(
&args->mParallelSpeculativeConnectLimit);
overrider->GetIgnoreIdle(&args->mIgnoreIdle);
overrider->GetIgnorePossibleSpdyConnections(
&args->mIgnorePossibleSpdyConnections);
overrider->GetIsFromPredictor(&args->mIsFromPredictor);
overrider->GetAllow1918(&args->mAllow1918);
}
@ -655,8 +652,6 @@ nsHttpConnectionMgr::ReportSpdyConnection(nsHttpConnection *conn,
if (!ent)
return;
ent->mTestedSpdy = true;
if (!usingSpdy)
return;
@ -677,11 +672,11 @@ nsHttpConnectionMgr::ReportSpdyConnection(nsHttpConnection *conn,
nsConnectionEntry *preferred =
mSpdyPreferredHash.Get(ent->mCoalescingKey);
LOG(("ReportSpdyConnection %s %s ent=%p preferred=%p\n",
ent->mConnInfo->Host(), ent->mCoalescingKey.get(),
ent, preferred));
LOG(("ReportSpdyConnection conn=%p %s %s ent=%p preferred=%p\n",conn,
ent->mConnInfo->Host(), ent->mCoalescingKey.get(), ent, preferred));
if (!preferred) {
preferred = ent;
if (!ent->mCoalescingKey.IsEmpty()) {
mSpdyPreferredHash.Put(ent->mCoalescingKey, ent);
ent->mSpdyPreferred = true;
@ -696,8 +691,7 @@ nsHttpConnectionMgr::ReportSpdyConnection(nsHttpConnection *conn,
// new transactions migrate over.
LOG(("ReportSpdyConnection graceful close of conn=%p ent=%p to "
"migrate to preferred\n", conn, ent));
"migrate to preferred (desharding)\n", conn, ent));
conn->DontReuse();
} else if (preferred != ent) {
LOG (("ReportSpdyConnection preferred host may be in false start or "
@ -705,6 +699,52 @@ nsHttpConnectionMgr::ReportSpdyConnection(nsHttpConnection *conn,
"abandon this connection yet."));
}
if (preferred == ent) {
// this is a new spdy connection to the preferred entry
for (int32_t index = ent->mHalfOpens.Length() - 1;
(index >= 0) && conn->CanDirectlyActivate(); --index) {
// Abandon all other half-open sockets belonging to the given transaction.
// While activating their transactions on the new conn
nsHalfOpenSocket *half = ent->mHalfOpens[index];
nsAHttpTransaction *abstractTrans = half->Transaction();
nsRefPtr<nsHttpTransaction> concreteTrans = abstractTrans->QueryHttpTransaction();
if (!concreteTrans) {
continue;
}
LOG(("ReportSpdyConnection conn %p taking transaction %p from a "
"half open that it will cancel\n", conn, concreteTrans.get()));
// concreteTrans is holding a ref to the transaction in half - so it
// is ok to destroy half
ent->RemoveHalfOpen(half);
half->Abandon();
nsresult rv = DispatchTransaction(ent, concreteTrans, conn);
MOZ_ASSERT(NS_SUCCEEDED(rv)); // this cannot fail
}
if (conn->CanDirectlyActivate() && ent->mActiveConns.Length() > 1) {
// this is a new connection to an established preferred spdy host.
// if there is more than 1 live and established spdy connection (e.g.
// some could still be handshaking, shutting down, etc..) then close
// this one down after any transactions that are on it are complete.
// This probably happened due to the parallel connection algorithm
// that is used only before the host is known to speak spdy.
for (uint32_t index = 0; index < ent->mActiveConns.Length(); ++index) {
nsHttpConnection *otherConn = ent->mActiveConns[index];
if (otherConn != conn) {
LOG(("ReportSpdyConnection shutting down connection (%p) because new "
"spdy connection (%p) takes precedence\n", otherConn, conn));
otherConn->DontReuse();
}
}
}
}
ProcessPendingQ(ent->mConnInfo);
PostEvent(&nsHttpConnectionMgr::OnMsgProcessAllSpdyPendingQ);
}
@ -1027,9 +1067,7 @@ nsHttpConnectionMgr::PruneDeadConnectionsCB(const nsACString &key,
ent->mActiveConns.Length() == 0 &&
ent->mHalfOpens.Length() == 0 &&
ent->mPendingQ.Length() == 0 &&
((!ent->mTestedSpdy && !ent->mUsingSpdy) ||
!gHttpHandler->IsSpdyEnabled() ||
self->mCT.Count() > 300)) {
(!ent->mUsingSpdy || self->mCT.Count() > 300)) {
LOG((" removing empty connection entry\n"));
return PL_DHASH_REMOVE;
}
@ -1409,8 +1447,7 @@ nsHttpConnectionMgr::ClosePersistentConnectionsCB(const nsACString &key,
}
bool
nsHttpConnectionMgr::RestrictConnections(nsConnectionEntry *ent,
bool ignorePossibleSpdyConnections)
nsHttpConnectionMgr::RestrictConnections(nsConnectionEntry *ent)
{
MOZ_ASSERT(PR_GetCurrentThread() == gSocketThread);
@ -1420,8 +1457,7 @@ nsHttpConnectionMgr::RestrictConnections(nsConnectionEntry *ent,
bool doRestrict = ent->mConnInfo->FirstHopSSL() &&
gHttpHandler->IsSpdyEnabled() &&
((!ent->mTestedSpdy && !ignorePossibleSpdyConnections) ||
ent->mUsingSpdy) &&
ent->mUsingSpdy &&
(ent->mHalfOpens.Length() || ent->mActiveConns.Length());
// If there are no restrictions, we are done
@ -1430,8 +1466,9 @@ nsHttpConnectionMgr::RestrictConnections(nsConnectionEntry *ent,
// If the restriction is based on a tcp handshake in progress
// let that connect and then see if it was SPDY or not
if (ent->UnconnectedHalfOpens() && !ignorePossibleSpdyConnections)
if (ent->UnconnectedHalfOpens()) {
return true;
}
// There is a concern that a host is using a mix of HTTP/1 and SPDY.
// In that case we don't want to restrict connections just because
@ -2945,14 +2982,12 @@ nsHttpConnectionMgr::OnMsgSpeculativeConnect(int32_t, void *param)
uint32_t parallelSpeculativeConnectLimit =
gHttpHandler->ParallelSpeculativeConnectLimit();
bool ignorePossibleSpdyConnections = false;
bool ignoreIdle = false;
bool isFromPredictor = false;
bool allow1918 = false;
if (args->mOverridesOK) {
parallelSpeculativeConnectLimit = args->mParallelSpeculativeConnectLimit;
ignorePossibleSpdyConnections = args->mIgnorePossibleSpdyConnections;
ignoreIdle = args->mIgnoreIdle;
isFromPredictor = args->mIsFromPredictor;
allow1918 = args->mAllow1918;
@ -2962,7 +2997,7 @@ nsHttpConnectionMgr::OnMsgSpeculativeConnect(int32_t, void *param)
if (mNumHalfOpenConns < parallelSpeculativeConnectLimit &&
((ignoreIdle && (ent->mIdleConns.Length() < parallelSpeculativeConnectLimit)) ||
!ent->mIdleConns.Length()) &&
!(keepAlive && RestrictConnections(ent, ignorePossibleSpdyConnections)) &&
!(keepAlive && RestrictConnections(ent)) &&
!AtActiveConnectionLimit(ent, args->mTrans->Caps())) {
CreateTransport(ent, args->mTrans, args->mTrans->Caps(), true, isFromPredictor, allow1918);
}
@ -3326,8 +3361,9 @@ nsHalfOpenSocket::OnOutputStreamReady(nsIAsyncOutputStream *out)
mStreamOut = nullptr;
mStreamIn = nullptr;
mSocketTransport = nullptr;
}
else {
} else {
MOZ_ASSERT(!mTransaction->IsNullTransaction(),
"null transactions dont have backup timers");
TimeDuration rtt = TimeStamp::Now() - mBackupSynStarted;
rv = conn->Init(mEnt->mConnInfo,
gHttpHandler->ConnMgr()->mMaxRequestDelay,
@ -3557,7 +3593,6 @@ nsConnectionEntry::nsConnectionEntry(nsHttpConnectionInfo *ci)
, mPipeliningPenalty(0)
, mSpdyCWND(0)
, mUsingSpdy(false)
, mTestedSpdy(false)
, mSpdyPreferred(false)
, mPreferIPv4(false)
, mPreferIPv6(false)
@ -3955,7 +3990,6 @@ nsHttpConnectionMgr::MoveToWildCardConnEntry(nsHttpConnectionInfo *specificCI,
return;
}
wcEnt->mUsingSpdy = true;
wcEnt->mTestedSpdy = true;
LOG(("nsHttpConnectionMgr::MakeConnEntryWildCard ent %p "
"idle=%d active=%d half=%d pending=%d\n", ent,

8
netwerk/protocol/http/nsHttpConnectionMgr.h
View File

@ -376,12 +376,6 @@ private:
// connection is currently using spdy.
bool mUsingSpdy;
// mTestedSpdy is set after NPN negotiation has occurred and we know
// with confidence whether a host speaks spdy or not (which is reflected
// in mUsingSpdy). Before mTestedSpdy is set, handshake parallelism is
// minimized so that we can multiplex on a single spdy connection.
bool mTestedSpdy;
bool mSpdyPreferred;
// Flags to remember our happy-eyeballs decision.
@ -565,7 +559,7 @@ private:
nsresult BuildPipeline(nsConnectionEntry *,
nsAHttpTransaction *,
nsHttpPipeline **);
bool RestrictConnections(nsConnectionEntry *, bool = false);
bool RestrictConnections(nsConnectionEntry *);
nsresult ProcessNewTransaction(nsHttpTransaction *);
nsresult EnsureSocketThreadTarget();
void ClosePersistentConnections(nsConnectionEntry *ent);