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/*
* ====================================================================
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* .
*
*/
package org.apache.http;
import java.io.IOException;
/**
* A client-side HTTP connection, which can be used for sending
* requests and receiving responses.
*
* @since 4.0
*/
public interface HttpClientConnection extends HttpConnection {
/**
* Checks if response data is available from the connection. May wait for
* the specified time until some data becomes available. Note that some
* implementations may completely ignore the timeout parameter.
*
* @param timeout the maximum time in milliseconds to wait for data
* @return true if data is available; false if there was no data available
* even after waiting for {@code timeout} milliseconds.
* @throws IOException if an error happens on the connection
*/
boolean isResponseAvailable(int timeout)
throws IOException;
/**
* Sends the request line and all headers over the connection.
* @param request the request whose headers to send.
* @throws HttpException in case of HTTP protocol violation
* @throws IOException in case of an I/O error
*/
void sendRequestHeader(HttpRequest request)
throws HttpException, IOException;
/**
* Sends the request entity over the connection.
* @param request the request whose entity to send.
* @throws HttpException in case of HTTP protocol violation
* @throws IOException in case of an I/O error
*/
void sendRequestEntity(HttpEntityEnclosingRequest request)
throws HttpException, IOException;
/**
* Receives the request line and headers of the next response available from
* this connection. The caller should examine the HttpResponse object to
* find out if it should try to receive a response entity as well.
*
* @return a new HttpResponse object with status line and headers
* initialized.
* @throws HttpException in case of HTTP protocol violation
* @throws IOException in case of an I/O error
*/
HttpResponse receiveResponseHeader()
throws HttpException, IOException;
/**
* Receives the next response entity available from this connection and
* attaches it to an existing HttpResponse object.
*
* @param response the response to attach the entity to
* @throws HttpException in case of HTTP protocol violation
* @throws IOException in case of an I/O error
*/
void receiveResponseEntity(HttpResponse response)
throws HttpException, IOException;
/**
* Writes out all pending buffered data over the open connection.
*
* @throws IOException in case of an I/O error
*/
void flush() throws IOException;
}