org.apache.http.impl.io.DefaultHttpRequestParser Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of httpcore Show documentation
Show all versions of httpcore Show documentation
Apache HttpComponents Core (blocking I/O)
/*
* ====================================================================
* 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.impl.io;
import java.io.IOException;
import org.apache.http.ConnectionClosedException;
import org.apache.http.HttpException;
import org.apache.http.HttpRequest;
import org.apache.http.HttpRequestFactory;
import org.apache.http.ParseException;
import org.apache.http.RequestLine;
import org.apache.http.config.MessageConstraints;
import org.apache.http.impl.DefaultHttpRequestFactory;
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;
/**
* HTTP request parser that obtain its input from an instance
* of {@link SessionInputBuffer}.
*
* @since 4.2
*/
@SuppressWarnings("deprecation")
public class DefaultHttpRequestParser extends AbstractMessageParser {
private final HttpRequestFactory requestFactory;
private final CharArrayBuffer lineBuf;
/**
* Creates an instance of this class.
*
* @param buffer the session input buffer.
* @param lineParser the line parser.
* @param requestFactory the factory to use to create
* {@link HttpRequest}s.
* @param params HTTP parameters.
*
* @deprecated (4.3) use
* {@link DefaultHttpRequestParser#DefaultHttpRequestParser(SessionInputBuffer, LineParser,
* HttpRequestFactory, MessageConstraints)}
*/
@Deprecated
public DefaultHttpRequestParser(
final SessionInputBuffer buffer,
final LineParser lineParser,
final HttpRequestFactory requestFactory,
final HttpParams params) {
super(buffer, lineParser, params);
this.requestFactory = Args.notNull(requestFactory, "Request factory");
this.lineBuf = new CharArrayBuffer(128);
}
/**
* Creates new instance of DefaultHttpRequestParser.
*
* @param buffer the session input buffer.
* @param lineParser the line parser. If {@code null}
* {@link org.apache.http.message.BasicLineParser#INSTANCE} will be used.
* @param requestFactory the response factory. If {@code null}
* {@link DefaultHttpRequestFactory#INSTANCE} will be used.
* @param constraints the message constraints. If {@code null}
* {@link MessageConstraints#DEFAULT} will be used.
*
* @since 4.3
*/
public DefaultHttpRequestParser(
final SessionInputBuffer buffer,
final LineParser lineParser,
final HttpRequestFactory requestFactory,
final MessageConstraints constraints) {
super(buffer, lineParser, constraints);
this.requestFactory = requestFactory != null ? requestFactory :
DefaultHttpRequestFactory.INSTANCE;
this.lineBuf = new CharArrayBuffer(128);
}
/**
* @since 4.3
*/
public DefaultHttpRequestParser(
final SessionInputBuffer buffer,
final MessageConstraints constraints) {
this(buffer, null, null, constraints);
}
/**
* @since 4.3
*/
public DefaultHttpRequestParser(final SessionInputBuffer buffer) {
this(buffer, null, null, MessageConstraints.DEFAULT);
}
@Override
protected HttpRequest parseHead(
final SessionInputBuffer sessionBuffer)
throws IOException, HttpException, ParseException {
this.lineBuf.clear();
final int readLen = sessionBuffer.readLine(this.lineBuf);
if (readLen == -1) {
throw new ConnectionClosedException("Client closed connection");
}
final ParserCursor cursor = new ParserCursor(0, this.lineBuf.length());
final RequestLine requestline = this.lineParser.parseRequestLine(this.lineBuf, cursor);
return this.requestFactory.newHttpRequest(requestline);
}
}