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-rw-r--r--netwerk/protocol/http/ConnectionEntry.h224
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diff --git a/netwerk/protocol/http/ConnectionEntry.h b/netwerk/protocol/http/ConnectionEntry.h
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+/* vim:set ts=4 sw=2 sts=2 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/. */
+
+#ifndef ConnectionEntry_h__
+#define ConnectionEntry_h__
+
+#include "PendingTransactionInfo.h"
+#include "PendingTransactionQueue.h"
+#include "DnsAndConnectSocket.h"
+#include "DashboardTypes.h"
+
+namespace mozilla {
+namespace net {
+
+// ConnectionEntry
+//
+// nsHttpConnectionMgr::mCT maps connection info hash key to ConnectionEntry
+// object, which contains list of active and idle connections as well as the
+// list of pending transactions.
+class ConnectionEntry {
+ public:
+ NS_INLINE_DECL_THREADSAFE_REFCOUNTING(ConnectionEntry)
+ explicit ConnectionEntry(nsHttpConnectionInfo* ci);
+
+ void ReschedTransaction(nsHttpTransaction* aTrans);
+
+ nsTArray<RefPtr<PendingTransactionInfo>>* GetTransactionPendingQHelper(
+ nsAHttpTransaction* trans);
+
+ void InsertTransactionSorted(
+ nsTArray<RefPtr<PendingTransactionInfo>>& pendingQ,
+ PendingTransactionInfo* pendingTransInfo,
+ bool aInsertAsFirstForTheSamePriority = false);
+
+ void InsertTransaction(PendingTransactionInfo* aPendingTransInfo,
+ bool aInsertAsFirstForTheSamePriority = false);
+
+ size_t UrgentStartQueueLength();
+
+ void PrintPendingQ();
+
+ void Compact();
+
+ void CancelAllTransactions(nsresult reason);
+
+ nsresult CloseIdleConnection(nsHttpConnection* conn);
+ void CloseIdleConnections();
+ void CloseIdleConnections(uint32_t maxToClose);
+ void CloseH2WebsocketConnections();
+ nsresult RemoveIdleConnection(nsHttpConnection* conn);
+ bool IsInIdleConnections(HttpConnectionBase* conn);
+ size_t IdleConnectionsLength() const { return mIdleConns.Length(); }
+ void InsertIntoIdleConnections(nsHttpConnection* conn);
+ already_AddRefed<nsHttpConnection> GetIdleConnection(bool respectUrgency,
+ bool urgentTrans,
+ bool* onlyUrgent);
+
+ size_t ActiveConnsLength() const { return mActiveConns.Length(); }
+ void InsertIntoActiveConns(HttpConnectionBase* conn);
+ bool IsInActiveConns(HttpConnectionBase* conn);
+ nsresult RemoveActiveConnection(HttpConnectionBase* conn);
+ void MakeAllDontReuseExcept(HttpConnectionBase* conn);
+ bool FindConnToClaim(PendingTransactionInfo* pendingTransInfo);
+ void CloseActiveConnections();
+ void CloseAllActiveConnsWithNullTransactcion(nsresult aCloseCode);
+
+ bool IsInH2WebsocketConns(HttpConnectionBase* conn);
+ void InsertIntoH2WebsocketConns(HttpConnectionBase* conn);
+ void RemoveH2WebsocketConns(HttpConnectionBase* conn);
+
+ HttpConnectionBase* GetH2orH3ActiveConn();
+ // Make an active spdy connection DontReuse.
+ // TODO: this is a helper function and should nbe improved.
+ bool MakeFirstActiveSpdyConnDontReuse();
+
+ void ClosePersistentConnections();
+
+ uint32_t PruneDeadConnections();
+ void VerifyTraffic();
+ void PruneNoTraffic();
+ uint32_t TimeoutTick();
+
+ void MoveConnection(HttpConnectionBase* proxyConn, ConnectionEntry* otherEnt);
+
+ size_t DnsAndConnectSocketsLength() const {
+ return mDnsAndConnectSockets.Length();
+ }
+
+ void InsertIntoDnsAndConnectSockets(DnsAndConnectSocket* sock);
+ void RemoveDnsAndConnectSocket(DnsAndConnectSocket* dnsAndSock, bool abandon);
+ void CloseAllDnsAndConnectSockets();
+
+ HttpRetParams GetConnectionData();
+ void LogConnections();
+
+ const RefPtr<nsHttpConnectionInfo> mConnInfo;
+
+ bool AvailableForDispatchNow();
+
+ // calculate the number of half open sockets that have not had at least 1
+ // connection complete
+ uint32_t UnconnectedDnsAndConnectSockets() const;
+
+ // Remove a particular DnsAndConnectSocket from the mDnsAndConnectSocket array
+ bool RemoveDnsAndConnectSocket(DnsAndConnectSocket*);
+
+ bool MaybeProcessCoalescingKeys(nsIDNSAddrRecord* dnsRecord,
+ bool aIsHttp3 = false);
+
+ nsresult CreateDnsAndConnectSocket(nsAHttpTransaction* trans, uint32_t caps,
+ bool speculative, bool isFromPredictor,
+ bool urgentStart, bool allow1918,
+ PendingTransactionInfo* pendingTransInfo);
+
+ // Spdy sometimes resolves the address in the socket manager in order
+ // to re-coalesce sharded HTTP hosts. The dotted decimal address is
+ // combined with the Anonymous flag and OA from the connection information
+ // to build the hash key for hosts in the same ip pool.
+ //
+ nsTArray<nsCString> mCoalescingKeys;
+
+ // To have the UsingSpdy flag means some host with the same connection
+ // entry has done NPN=spdy/* at some point. It does not mean every
+ // connection is currently using spdy.
+ bool mUsingSpdy : 1;
+
+ // Determines whether or not we can continue to use spdy-enabled
+ // connections in the future. This is generally set to false either when
+ // some connection here encounters connection-based auth (such as NTLM)
+ // or when some connection here encounters a server that is totally
+ // busted (such as it fails to properly perform the h2 handshake).
+ bool mCanUseSpdy : 1;
+
+ // Flags to remember our happy-eyeballs decision.
+ // Reset only by Ctrl-F5 reload.
+ // True when we've first connected an IPv4 server for this host,
+ // initially false.
+ bool mPreferIPv4 : 1;
+ // True when we've first connected an IPv6 server for this host,
+ // initially false.
+ bool mPreferIPv6 : 1;
+
+ // True if this connection entry has initiated a socket
+ bool mUsedForConnection : 1;
+
+ bool mDoNotDestroy : 1;
+
+ bool IsHttp3() const { return mConnInfo->IsHttp3(); }
+ bool AllowHttp2() const { return mCanUseSpdy; }
+ void DisallowHttp2();
+ void DontReuseHttp3Conn();
+
+ // Set the IP family preference flags according the connected family
+ void RecordIPFamilyPreference(uint16_t family);
+ // Resets all flags to their default values
+ void ResetIPFamilyPreference();
+ // True iff there is currently an established IP family preference
+ bool PreferenceKnown() const;
+
+ // Return the count of pending transactions for all window ids.
+ size_t PendingQueueLength() const;
+ size_t PendingQueueLengthForWindow(uint64_t windowId) const;
+
+ void AppendPendingUrgentStartQ(
+ nsTArray<RefPtr<PendingTransactionInfo>>& result);
+
+ // Append transactions to the |result| whose window id
+ // is equal to |windowId|.
+ // NOTE: maxCount == 0 will get all transactions in the queue.
+ void AppendPendingQForFocusedWindow(
+ uint64_t windowId, nsTArray<RefPtr<PendingTransactionInfo>>& result,
+ uint32_t maxCount = 0);
+
+ // Append transactions whose window id isn't equal to |windowId|.
+ // NOTE: windowId == 0 will get all transactions for both
+ // focused and non-focused windows.
+ void AppendPendingQForNonFocusedWindows(
+ uint64_t windowId, nsTArray<RefPtr<PendingTransactionInfo>>& result,
+ uint32_t maxCount = 0);
+
+ // Remove the empty pendingQ in |mPendingTransactionTable|.
+ void RemoveEmptyPendingQ();
+
+ void PrintDiagnostics(nsCString& log, uint32_t aMaxPersistConns);
+
+ bool RestrictConnections();
+
+ // Return total active connection count, which is the sum of
+ // active connections and unconnected half open connections.
+ uint32_t TotalActiveConnections() const;
+
+ bool RemoveTransFromPendingQ(nsHttpTransaction* aTrans);
+
+ void MaybeUpdateEchConfig(nsHttpConnectionInfo* aConnInfo);
+
+ bool AllowToRetryDifferentIPFamilyForHttp3(nsresult aError);
+ void SetRetryDifferentIPFamilyForHttp3(uint16_t aIPFamily);
+
+ private:
+ void InsertIntoIdleConnections_internal(nsHttpConnection* conn);
+ void RemoveFromIdleConnectionsIndex(size_t inx);
+ bool RemoveFromIdleConnections(nsHttpConnection* conn);
+
+ nsTArray<RefPtr<nsHttpConnection>> mIdleConns; // idle persistent connections
+ nsTArray<RefPtr<HttpConnectionBase>> mActiveConns; // active connections
+
+ // "fake" http2 websocket connections that needs to be cleaned up on shutdown
+ nsTArray<RefPtr<HttpConnectionBase>> mH2WebsocketConns;
+
+ nsTArray<RefPtr<DnsAndConnectSocket>>
+ mDnsAndConnectSockets; // dns resolution and half open connections
+
+ PendingTransactionQueue mPendingQ;
+ ~ConnectionEntry();
+
+ bool mRetriedDifferentIPFamilyForHttp3 = false;
+};
+
+} // namespace net
+} // namespace mozilla
+
+#endif // !ConnectionEntry_h__