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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Unpublished - rights reserved under the Copyright Laws of the United States.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 : Author : Phelim O'Doherty HISTORY Version Date Author Comments 1.1 08/10/2002 Phelim O'Doherty ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
package javax.sip.header;
The Allow header field lists the set of methods supported by the User Agent generating the message. All methods, including ACK and CANCEL, understood by the User Agent MUST be included in the list of methods in the Allow header field, when present. The absence of an Allow header field MUST NOT be interpreted to mean that the User Agent sending the message supports no methods. Rather, it implies that the User Agent is not providing any information on what methods it supports. Supplying an Allow header field in responses to methods other than OPTIONS reduces the number of messages needed.

For Example:

BEA Systems, NIST
public interface AllowHeader extends Header {

Sets the Allow header value. The argument may be a single method name (eg "ACK") or a comma delimited list of method names (eg "ACK, CANCEL, INVITE").

method - the String defining the method supported in this AllowHeader
java.text.ParseException which signals that an error has been reached unexpectedly while parsing the method supported.
    public void setMethod(String methodthrows ParseException;

Gets the method of the AllowHeader. Returns null if no method is defined in this Allow Header.

the string identifing the method of AllowHeader.
    public String getMethod();

Name of AllowHeader
    public final static String NAME = "Allow";
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