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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
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 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * ====================================================================
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 * This software consists of voluntary contributions made by many
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package org.apache.http.impl.conn;

import java.io.IOException;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
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.annotation.Contract;
import org.apache.http.annotation.ThreadingBehavior;
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.Args;
import org.apache.http.util.CharArrayBuffer;

/**
 * Default HTTP response parser implementation.
 * 

* The following parameters can be used to customize the behavior of this * class: *

    *
  • {@link org.apache.http.params.CoreConnectionPNames#MAX_HEADER_COUNT}
  • *
  • {@link org.apache.http.params.CoreConnectionPNames#MAX_LINE_LENGTH}
  • *
  • {@link org.apache.http.conn.params.ConnConnectionPNames#MAX_STATUS_LINE_GARBAGE}
  • *
* * @since 4.0 * * @deprecated (4.2) use {@link DefaultHttpResponseParser} */ @Deprecated @Contract(threading = ThreadingBehavior.SAFE_CONDITIONAL) public class DefaultResponseParser extends AbstractMessageParser { private final Log log = LogFactory.getLog(getClass()); 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); Args.notNull(responseFactory, "Response factory"); this.responseFactory = responseFactory; this.lineBuf = new CharArrayBuffer(128); this.maxGarbageLines = getMaxGarbageLines(params); } protected int getMaxGarbageLines(final HttpParams params) { return params.getIntParameter( org.apache.http.conn.params.ConnConnectionPNames.MAX_STATUS_LINE_GARBAGE, Integer.MAX_VALUE); } @Override protected HttpMessage parseHead( final SessionInputBuffer sessionBuffer) throws IOException, HttpException { //read out the HTTP status string int count = 0; ParserCursor cursor = null; do { // clear the buffer this.lineBuf.clear(); final 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"); } if (this.log.isDebugEnabled()) { this.log.debug("Garbage in response: " + this.lineBuf.toString()); } count++; } while(true); //create the status line from the status string final StatusLine statusline = lineParser.parseStatusLine(this.lineBuf, cursor); return this.responseFactory.newHttpResponse(statusline, null); } }




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