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+/* 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 nsASocketHandler_h__
+#define nsASocketHandler_h__
+
+// socket handler used by nsISocketTransportService.
+// methods are only called on the socket thread.
+
+class nsASocketHandler : public nsISupports
+{
+public:
+ nsASocketHandler()
+ : mCondition(NS_OK)
+ , mPollFlags(0)
+ , mPollTimeout(UINT16_MAX)
+ , mIsPrivate(false)
+ {}
+
+ //
+ // this condition variable will be checked to determine if the socket
+ // handler should be detached. it must only be accessed on the socket
+ // thread.
+ //
+ nsresult mCondition;
+
+ //
+ // these flags can only be modified on the socket transport thread.
+ // the socket transport service will check these flags before calling
+ // PR_Poll.
+ //
+ uint16_t mPollFlags;
+
+ //
+ // this value specifies the maximum amount of time in seconds that may be
+ // spent waiting for activity on this socket. if this timeout is reached,
+ // then OnSocketReady will be called with outFlags = -1.
+ //
+ // the default value for this member is UINT16_MAX, which disables the
+ // timeout error checking. (i.e., a timeout value of UINT16_MAX is
+ // never reached.)
+ //
+ uint16_t mPollTimeout;
+
+ bool mIsPrivate;
+
+ //
+ // called to service a socket
+ //
+ // params:
+ // socketRef - socket identifier
+ // fd - socket file descriptor
+ // outFlags - value of PR_PollDesc::out_flags after PR_Poll returns
+ // or -1 if a timeout occurred
+ //
+ virtual void OnSocketReady(PRFileDesc *fd, int16_t outFlags) = 0;
+
+ //
+ // called when a socket is no longer under the control of the socket
+ // transport service. the socket handler may close the socket at this
+ // point. after this call returns, the handler will no longer be owned
+ // by the socket transport service.
+ //
+ virtual void OnSocketDetached(PRFileDesc *fd) = 0;
+
+ //
+ // called to determine if the socket is for a local peer.
+ // when used for server sockets, indicates if it only accepts local
+ // connections.
+ //
+ virtual void IsLocal(bool *aIsLocal) = 0;
+
+ //
+ // called to determine if this socket should not be terminated when Gecko
+ // is turned offline. This is mostly useful for the debugging server
+ // socket.
+ //
+ virtual void KeepWhenOffline(bool *aKeepWhenOffline)
+ {
+ *aKeepWhenOffline = false;
+ }
+
+ //
+ // called when global pref for keepalive has changed.
+ //
+ virtual void OnKeepaliveEnabledPrefChange(bool aEnabled) { }
+
+ //
+ // returns the number of bytes sent/transmitted over the socket
+ //
+ virtual uint64_t ByteCountSent() = 0;
+ virtual uint64_t ByteCountReceived() = 0;
+};
+
+#endif // !nsASocketHandler_h__