| /* |
| * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk/module-client/src/main/java/org/apache/http/impl/conn/DefaultResponseParser.java $ |
| * $Revision: 617638 $ |
| * $Date: 2008-02-01 12:49:26 -0800 (Fri, 01 Feb 2008) $ |
| * |
| * ==================================================================== |
| * 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 |
| * <http://www.apache.org/>. |
| * |
| */ |
| |
| package org.apache.http.impl.conn; |
| |
| import java.io.IOException; |
| |
| import org.apache.http.HttpException; |
| import org.apache.http.HttpMessage; |
| import org.apache.http.HttpResponseFactory; |
| import org.apache.http.NoHttpResponseException; |
| import org.apache.http.ProtocolException; |
| import org.apache.http.StatusLine; |
| import org.apache.http.conn.params.ConnConnectionPNames; |
| import org.apache.http.impl.io.AbstractMessageParser; |
| import org.apache.http.io.SessionInputBuffer; |
| import org.apache.http.message.LineParser; |
| import org.apache.http.message.ParserCursor; |
| import org.apache.http.params.HttpParams; |
| import org.apache.http.util.CharArrayBuffer; |
| |
| public class DefaultResponseParser extends AbstractMessageParser { |
| |
| private final HttpResponseFactory responseFactory; |
| private final CharArrayBuffer lineBuf; |
| private final int maxGarbageLines; |
| |
| public DefaultResponseParser( |
| final SessionInputBuffer buffer, |
| final LineParser parser, |
| final HttpResponseFactory responseFactory, |
| final HttpParams params) { |
| super(buffer, parser, params); |
| if (responseFactory == null) { |
| throw new IllegalArgumentException |
| ("Response factory may not be null"); |
| } |
| this.responseFactory = responseFactory; |
| this.lineBuf = new CharArrayBuffer(128); |
| this.maxGarbageLines = params.getIntParameter( |
| ConnConnectionPNames.MAX_STATUS_LINE_GARBAGE, Integer.MAX_VALUE); |
| } |
| |
| |
| @Override |
| protected HttpMessage parseHead( |
| final SessionInputBuffer sessionBuffer) throws IOException, HttpException { |
| // clear the buffer |
| this.lineBuf.clear(); |
| //read out the HTTP status string |
| int count = 0; |
| ParserCursor cursor = null; |
| do { |
| int i = sessionBuffer.readLine(this.lineBuf); |
| if (i == -1 && count == 0) { |
| // The server just dropped connection on us |
| throw new NoHttpResponseException("The target server failed to respond"); |
| } |
| cursor = new ParserCursor(0, this.lineBuf.length()); |
| if (lineParser.hasProtocolVersion(this.lineBuf, cursor)) { |
| // Got one |
| break; |
| } else if (i == -1 || count >= this.maxGarbageLines) { |
| // Giving up |
| throw new ProtocolException("The server failed to respond with a " + |
| "valid HTTP response"); |
| } |
| count++; |
| } while(true); |
| //create the status line from the status string |
| StatusLine statusline = lineParser.parseStatusLine(this.lineBuf, cursor); |
| return this.responseFactory.newHttpResponse(statusline, null); |
| } |
| |
| } |