132 lines
4.3 KiB
Java
132 lines
4.3 KiB
Java
/*
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* Conditions Of Use
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*
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* This software was developed by employees of the National Institute of
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* Standards and Technology (NIST), an agency of the Federal Government.
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* Pursuant to title 15 Untied States Code Section 105, works of NIST
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* employees are not subject to copyright protection in the United States
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* and are considered to be in the public domain. As a result, a formal
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* license is not needed to use the software.
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*
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* This software is provided by NIST as a service and is expressly
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* provided "AS IS." NIST MAKES NO WARRANTY OF ANY KIND, EXPRESS, IMPLIED
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* OR STATUTORY, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTY OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT
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* AND DATA ACCURACY. NIST does not warrant or make any representations
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* regarding the use of the software or the results thereof, including but
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* not limited to the correctness, accuracy, reliability or usefulness of
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* the software.
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*
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* Permission to use this software is contingent upon your acceptance
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* of the terms of this agreement
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*
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* .
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*
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*/
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package gov.nist.javax.sip.parser;
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import gov.nist.javax.sip.header.*;
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import gov.nist.core.*;
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import java.text.ParseException;
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import javax.sip.*;
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/**
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* Parser for RetryAfter header.
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*
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* @version 1.2
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*
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* @author Olivier Deruelle
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* @author M. Ranganathan
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*
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*
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* @version 1.2 $Revision: 1.10 $ $Date: 2009/11/04 17:23:00 $
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*/
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public class RetryAfterParser extends HeaderParser {
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/**
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* Creates a new instance of RetryAfterParser
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* @param retryAfter the header to parse
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*/
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public RetryAfterParser(String retryAfter) {
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super(retryAfter);
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}
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/**
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* Constructor
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* @param lexer the lexer to use to parse the header
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*/
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protected RetryAfterParser(Lexer lexer) {
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super(lexer);
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}
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/**
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* parse the String message
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* @return SIPHeader (RetryAfter object)
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* @throws SIPParseException if the message does not respect the spec.
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*/
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public SIPHeader parse() throws ParseException {
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if (debug)
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dbg_enter("RetryAfterParser.parse");
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RetryAfter retryAfter = new RetryAfter();
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try {
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headerName(TokenTypes.RETRY_AFTER);
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// mandatory delatseconds:
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String value = lexer.number();
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try {
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int ds = Integer.parseInt(value);
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retryAfter.setRetryAfter(ds);
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} catch (NumberFormatException ex) {
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throw createParseException(ex.getMessage());
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} catch (InvalidArgumentException ex) {
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throw createParseException(ex.getMessage());
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}
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this.lexer.SPorHT();
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if (lexer.lookAhead(0) == '(') {
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String comment = this.lexer.comment();
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retryAfter.setComment(comment);
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}
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this.lexer.SPorHT();
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while (lexer.lookAhead(0) == ';') {
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this.lexer.match(';');
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this.lexer.SPorHT();
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lexer.match(TokenTypes.ID);
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Token token = lexer.getNextToken();
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value = token.getTokenValue();
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if (value.equalsIgnoreCase("duration")) {
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this.lexer.match('=');
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this.lexer.SPorHT();
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value = lexer.number();
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try {
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int duration = Integer.parseInt(value);
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retryAfter.setDuration(duration);
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} catch (NumberFormatException ex) {
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throw createParseException(ex.getMessage());
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} catch (InvalidArgumentException ex) {
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throw createParseException(ex.getMessage());
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}
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} else {
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this.lexer.SPorHT();
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this.lexer.match('=');
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this.lexer.SPorHT();
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lexer.match(TokenTypes.ID);
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Token secondToken = lexer.getNextToken();
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String secondValue = secondToken.getTokenValue();
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retryAfter.setParameter(value, secondValue);
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}
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this.lexer.SPorHT();
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}
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} finally {
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if (debug)
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dbg_leave("RetryAfterParser.parse");
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}
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return retryAfter;
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}
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}
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