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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Unpublished - rights reserved under the Copyright Laws of the United States. Copyright � 2003 Sun Microsystems, Inc. All rights reserved. Copyright � 2005 BEA Systems, Inc. All rights reserved. Use is subject to license terms. This distribution may include materials developed by third parties. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Module Name : JSIP Specification File Name : RSeqHeader.java Author : Phelim O'Doherty HISTORY Version Date Author Comments 1.1 08/10/2002 Phelim O'Doherty Initial version, optional header to support RFC3262. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
package javax.sip.header;
This interface represents the RSeq header, as defined by RFC3262, this header is not part of RFC3261.

The RSeq header is used in provisional responses in order to transmit them reliably. It contains a single numeric value from 1 to 2**32-1. The value of the RSeq in each subsequent reliable provisional response for the same request MUST be greater by exactly one. RSeq numbers MUST NOT wrap around. Because the initial one is chosen to be less than 2**31 - 1, but the maximum is 2**32 - 1, there can be up to 2**31 reliable provisional responses per request, which is more than sufficient. As the RSeq numbering space is within a single transaction. This means that provisional responses for different requests MAY use the same values for the RSeq number.

A server must ignore Headers that it does not understand. A proxy must not remove or modify Headers that it does not understand.

Author(s):
BEA Systems, NIST
Version:
1.2
public interface RSeqHeader extends Header {
  
    
Sets the sequence number value of the RSeqHeader of the provisional response. The sequence number MUST be expressible as a 32-bit unsigned integer and MUST be less than 2**31.

Parameters:
sequenceNumber - the new Sequence number of this RSeqHeader
Throws:
javax.sip.InvalidArgumentException if supplied value is less than zero.
    public void setSequenceNumber(int sequenceNumberthrows InvalidArgumentException;

    
Gets the sequence number of this RSeqHeader.

Returns:
the integer value of the Sequence number of the RSeqHeader
    public int getSequenceNumber();    
    
    
Name of RSeqHeader
    public final static String NAME = "RSeq";
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