CirChannel.java
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上传日期:2016-09-20
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文件大小:2k
- /*
- * Copyright (C) 2007 Esmertec AG.
- * Copyright (C) 2007 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
- package com.android.im.imps;
- import com.android.im.engine.ImException;
- /**
- * The protocol binding in data channel might be WSP, HTTP and HTTPS which are
- * asymmetric. In this case when the server needs to start transaction, it has
- * to send a communication initiation request message through the CIR channel to
- * the client in order to request an immediate PollingRequest message from the
- * client to the server on the data channel.
- */
- abstract class CirChannel {
- protected ImpsConnection mConnection;
- protected CirChannel(ImpsConnection connection) {
- mConnection = connection;
- }
- /**
- * Establishes the connection to the server if the protocol is connection
- * oriented (e.g. as TCP)and starts to listen to CIR requests from the
- * server.
- * @throws Exception
- */
- public abstract void connect() throws ImException;
- public void reconnect(){
- }
- /**
- * Shutdown the CIR channel, stops to listen to CIR requests from the server.
- *
- */
- public abstract void shutdown();
- }