OKhttp的回调的代码

/*  * Copyright (C) 2014 Square, Inc.  *  * 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 okhttp3;

import java.io.IOException;

public interface Callback {
  /**  * Called when the request could not be executed due to cancellation, a connectivity problem or  * timeout. Because networks can fail during an exchange, it is possible that the remote server  * accepted the request before the failure.  */  void onFailure(Call call, IOException e);

  /**  * Called when the HTTP response was successfully returned by the remote server. The callback may  * proceed to read the response body with {@link Response#body}. The response is still live until  * its response body is closed with {@code response.body().close()}. The recipient of the callback  * may even consume the response body on another thread.  *  * <p>Note that transport-layer success (receiving a HTTP response code, headers and body) does  * not necessarily indicate application-layer success: {@code response} may still indicate an  * unhappy HTTP response code like 404 or 500.  */  void onResponse(Call call, Response response) throws IOException;
}