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  /*
  * Conditions Of Use
  *
  * This software was developed by employees of the National Institute of
  * Standards and Technology (NIST), an agency of the Federal Government.
  * Pursuant to title 15 Untied States Code Section 105, works of NIST
  * employees are not subject to copyright protection in the United States
  * and are considered to be in the public domain.  As a result, a formal
  * license is not needed to use the software.
 *
 * This software is provided by NIST as a service and is expressly
 * provided "AS IS."  NIST MAKES NO WARRANTY OF ANY KIND, EXPRESS, IMPLIED
 * OR STATUTORY, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTY OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT
 * AND DATA ACCURACY.  NIST does not warrant or make any representations
 * regarding the use of the software or the results thereof, including but
 * not limited to the correctness, accuracy, reliability or usefulness of
 * the software.
 *
 * Permission to use this software is contingent upon your acceptance
 * of the terms of this agreement
 *
 * .
 *
 */
 package gov.nist.javax.sip.parser;
 
 import javax.sip.*;

Parser for RetryAfter header.

Author(s):
Olivier Deruelle
M. Ranganathan
Version:
1.2
1.2 $Revision: 1.10 $ $Date: 2009/11/04 17:23:00 $
 
 public class RetryAfterParser extends HeaderParser {

    
Creates a new instance of RetryAfterParser

Parameters:
retryAfter the header to parse
 
     public RetryAfterParser(String retryAfter) {
         super(retryAfter);
     }

    
Constructor

Parameters:
lexer the lexer to use to parse the header
 
     protected RetryAfterParser(Lexer lexer) {
         super(lexer);
     }

    
parse the String message

Returns:
SIPHeader (RetryAfter object)
Throws:
SIPParseException if the message does not respect the spec.
 
     public SIPHeader parse() throws ParseException {
 
         if ()
             dbg_enter("RetryAfterParser.parse");
 
         RetryAfter retryAfter = new RetryAfter();
         try {
             headerName(.);
 
             // mandatory delatseconds:
             String value = .number();
             try {
                 int ds = Integer.parseInt(value);
                 retryAfter.setRetryAfter(ds);
             } catch (NumberFormatException ex) {
                 throw createParseException(ex.getMessage());
             } catch (InvalidArgumentException ex) {
                 throw createParseException(ex.getMessage());
             }
 
             this..SPorHT();
             if (.lookAhead(0) == '(') {
                 String comment = this..comment();
                 retryAfter.setComment(comment);
             }
             this..SPorHT();
 
             while (.lookAhead(0) == ';') {
                 this..match(';');
                 this..SPorHT();
                 .match(.);
                 Token token = .getNextToken();
                 value = token.getTokenValue();
                if (value.equalsIgnoreCase("duration")) {
                    this..match('=');
                    this..SPorHT();
                    value = .number();
                    try {
                        int duration = Integer.parseInt(value);
                        retryAfter.setDuration(duration);
                    } catch (NumberFormatException ex) {
                        throw createParseException(ex.getMessage());
                    } catch (InvalidArgumentException ex) {
                        throw createParseException(ex.getMessage());
                    }
                } else {
                    this..SPorHT();
                    this..match('=');
                    this..SPorHT();
                    .match(.);
                    Token secondToken = .getNextToken();
                    String secondValue = secondToken.getTokenValue();
                    retryAfter.setParameter(valuesecondValue);
                }
                this..SPorHT();
            }
        } finally {
            if ()
                dbg_leave("RetryAfterParser.parse");
        }
        return retryAfter;
    }
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