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pt 1 in reviving the android build (copied from pm 28a1, wish me luck)
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284
mobile/android/thirdparty/ch/boye/httpclientandroidlib/impl/io/AbstractMessageParser.java
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284
mobile/android/thirdparty/ch/boye/httpclientandroidlib/impl/io/AbstractMessageParser.java
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/*
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* ====================================================================
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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* ====================================================================
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*
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* This software consists of voluntary contributions made by many
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* individuals on behalf of the Apache Software Foundation. For more
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* information on the Apache Software Foundation, please see
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* <http://www.apache.org/>.
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*
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*/
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package ch.boye.httpclientandroidlib.impl.io;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.List;
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import ch.boye.httpclientandroidlib.Header;
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import ch.boye.httpclientandroidlib.HttpException;
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import ch.boye.httpclientandroidlib.HttpMessage;
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import ch.boye.httpclientandroidlib.MessageConstraintException;
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import ch.boye.httpclientandroidlib.ParseException;
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import ch.boye.httpclientandroidlib.ProtocolException;
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import ch.boye.httpclientandroidlib.annotation.NotThreadSafe;
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import ch.boye.httpclientandroidlib.config.MessageConstraints;
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import ch.boye.httpclientandroidlib.io.HttpMessageParser;
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import ch.boye.httpclientandroidlib.io.SessionInputBuffer;
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import ch.boye.httpclientandroidlib.message.BasicLineParser;
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import ch.boye.httpclientandroidlib.message.LineParser;
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import ch.boye.httpclientandroidlib.params.HttpParamConfig;
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import ch.boye.httpclientandroidlib.params.HttpParams;
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import ch.boye.httpclientandroidlib.util.Args;
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import ch.boye.httpclientandroidlib.util.CharArrayBuffer;
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/**
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* Abstract base class for HTTP message parsers that obtain input from
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* an instance of {@link SessionInputBuffer}.
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*
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* @since 4.0
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*/
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@SuppressWarnings("deprecation")
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@NotThreadSafe
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public abstract class AbstractMessageParser<T extends HttpMessage> implements HttpMessageParser<T> {
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private static final int HEAD_LINE = 0;
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private static final int HEADERS = 1;
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private final SessionInputBuffer sessionBuffer;
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private final MessageConstraints messageConstraints;
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private final List<CharArrayBuffer> headerLines;
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protected final LineParser lineParser;
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private int state;
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private T message;
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/**
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* Creates an instance of AbstractMessageParser.
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*
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* @param buffer the session input buffer.
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* @param parser the line parser.
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* @param params HTTP parameters.
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*
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* @deprecated (4.3) use {@link AbstractMessageParser#AbstractMessageParser(SessionInputBuffer,
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* LineParser, MessageConstraints)}
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*/
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@Deprecated
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public AbstractMessageParser(
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final SessionInputBuffer buffer,
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final LineParser parser,
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final HttpParams params) {
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super();
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Args.notNull(buffer, "Session input buffer");
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Args.notNull(params, "HTTP parameters");
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this.sessionBuffer = buffer;
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this.messageConstraints = HttpParamConfig.getMessageConstraints(params);
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this.lineParser = (parser != null) ? parser : BasicLineParser.INSTANCE;
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this.headerLines = new ArrayList<CharArrayBuffer>();
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this.state = HEAD_LINE;
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}
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/**
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* Creates new instance of AbstractMessageParser.
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*
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* @param buffer the session input buffer.
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* @param lineParser the line parser. If <code>null</code> {@link BasicLineParser#INSTANCE}
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* will be used.
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* @param constraints the message constraints. If <code>null</code>
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* {@link MessageConstraints#DEFAULT} will be used.
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*
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* @since 4.3
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*/
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public AbstractMessageParser(
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final SessionInputBuffer buffer,
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final LineParser lineParser,
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final MessageConstraints constraints) {
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super();
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this.sessionBuffer = Args.notNull(buffer, "Session input buffer");
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this.lineParser = lineParser != null ? lineParser : BasicLineParser.INSTANCE;
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this.messageConstraints = constraints != null ? constraints : MessageConstraints.DEFAULT;
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this.headerLines = new ArrayList<CharArrayBuffer>();
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this.state = HEAD_LINE;
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}
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/**
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* Parses HTTP headers from the data receiver stream according to the generic
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* format as given in Section 3.1 of RFC 822, RFC-2616 Section 4 and 19.3.
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*
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* @param inbuffer Session input buffer
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* @param maxHeaderCount maximum number of headers allowed. If the number
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* of headers received from the data stream exceeds maxCount value, an
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* IOException will be thrown. Setting this parameter to a negative value
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* or zero will disable the check.
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* @param maxLineLen maximum number of characters for a header line,
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* including the continuation lines. Setting this parameter to a negative
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* value or zero will disable the check.
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* @return array of HTTP headers
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* @param parser line parser to use. Can be <code>null</code>, in which case
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* the default implementation of this interface will be used.
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*
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* @throws IOException in case of an I/O error
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* @throws HttpException in case of HTTP protocol violation
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*/
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public static Header[] parseHeaders(
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final SessionInputBuffer inbuffer,
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final int maxHeaderCount,
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final int maxLineLen,
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final LineParser parser) throws HttpException, IOException {
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final List<CharArrayBuffer> headerLines = new ArrayList<CharArrayBuffer>();
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return parseHeaders(inbuffer, maxHeaderCount, maxLineLen,
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parser != null ? parser : BasicLineParser.INSTANCE,
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headerLines);
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}
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/**
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* Parses HTTP headers from the data receiver stream according to the generic
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* format as given in Section 3.1 of RFC 822, RFC-2616 Section 4 and 19.3.
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*
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* @param inbuffer Session input buffer
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* @param maxHeaderCount maximum number of headers allowed. If the number
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* of headers received from the data stream exceeds maxCount value, an
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* IOException will be thrown. Setting this parameter to a negative value
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* or zero will disable the check.
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* @param maxLineLen maximum number of characters for a header line,
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* including the continuation lines. Setting this parameter to a negative
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* value or zero will disable the check.
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* @param parser line parser to use.
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* @param headerLines List of header lines. This list will be used to store
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* intermediate results. This makes it possible to resume parsing of
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* headers in case of a {@link java.io.InterruptedIOException}.
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*
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* @return array of HTTP headers
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*
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* @throws IOException in case of an I/O error
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* @throws HttpException in case of HTTP protocol violation
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*
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* @since 4.1
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*/
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public static Header[] parseHeaders(
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final SessionInputBuffer inbuffer,
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final int maxHeaderCount,
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final int maxLineLen,
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final LineParser parser,
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final List<CharArrayBuffer> headerLines) throws HttpException, IOException {
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Args.notNull(inbuffer, "Session input buffer");
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Args.notNull(parser, "Line parser");
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Args.notNull(headerLines, "Header line list");
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CharArrayBuffer current = null;
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CharArrayBuffer previous = null;
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for (;;) {
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if (current == null) {
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current = new CharArrayBuffer(64);
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} else {
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current.clear();
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}
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final int l = inbuffer.readLine(current);
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if (l == -1 || current.length() < 1) {
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break;
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}
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// Parse the header name and value
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// Check for folded headers first
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// Detect LWS-char see HTTP/1.0 or HTTP/1.1 Section 2.2
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// discussion on folded headers
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if ((current.charAt(0) == ' ' || current.charAt(0) == '\t') && previous != null) {
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// we have continuation folded header
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// so append value
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int i = 0;
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while (i < current.length()) {
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final char ch = current.charAt(i);
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if (ch != ' ' && ch != '\t') {
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break;
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}
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i++;
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}
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if (maxLineLen > 0
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&& previous.length() + 1 + current.length() - i > maxLineLen) {
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throw new MessageConstraintException("Maximum line length limit exceeded");
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}
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previous.append(' ');
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previous.append(current, i, current.length() - i);
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} else {
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headerLines.add(current);
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previous = current;
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current = null;
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}
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if (maxHeaderCount > 0 && headerLines.size() >= maxHeaderCount) {
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throw new MessageConstraintException("Maximum header count exceeded");
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}
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}
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final Header[] headers = new Header[headerLines.size()];
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for (int i = 0; i < headerLines.size(); i++) {
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final CharArrayBuffer buffer = headerLines.get(i);
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try {
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headers[i] = parser.parseHeader(buffer);
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} catch (final ParseException ex) {
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throw new ProtocolException(ex.getMessage());
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}
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}
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return headers;
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}
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/**
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* Subclasses must override this method to generate an instance of
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* {@link HttpMessage} based on the initial input from the session buffer.
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* <p>
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* Usually this method is expected to read just the very first line or
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* the very first valid from the data stream and based on the input generate
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* an appropriate instance of {@link HttpMessage}.
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*
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* @param sessionBuffer the session input buffer.
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* @return HTTP message based on the input from the session buffer.
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* @throws IOException in case of an I/O error.
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* @throws HttpException in case of HTTP protocol violation.
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* @throws ParseException in case of a parse error.
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*/
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protected abstract T parseHead(SessionInputBuffer sessionBuffer)
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throws IOException, HttpException, ParseException;
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public T parse() throws IOException, HttpException {
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final int st = this.state;
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switch (st) {
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case HEAD_LINE:
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try {
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this.message = parseHead(this.sessionBuffer);
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} catch (final ParseException px) {
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throw new ProtocolException(px.getMessage(), px);
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}
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this.state = HEADERS;
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//$FALL-THROUGH$
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case HEADERS:
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final Header[] headers = AbstractMessageParser.parseHeaders(
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this.sessionBuffer,
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this.messageConstraints.getMaxHeaderCount(),
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this.messageConstraints.getMaxLineLength(),
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this.lineParser,
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this.headerLines);
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this.message.setHeaders(headers);
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final T result = this.message;
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this.message = null;
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this.headerLines.clear();
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this.state = HEAD_LINE;
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return result;
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default:
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throw new IllegalStateException("Inconsistent parser state");
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}
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}
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}
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