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MinExpiresHeader (JSIP API v1.2)
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<b>JSIP API v1.2<br><font size=-1>November 2006</font></b></EM>
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javax.sip.header</FONT>
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Interface MinExpiresHeader</H2>
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<DT><B>All Superinterfaces:</B> <DD>java.lang.Cloneable, <A HREF="../../../javax/sip/header/ExpiresHeader.html" title="interface in javax.sip.header">ExpiresHeader</A>, <A HREF="../../../javax/sip/header/Header.html" title="interface in javax.sip.header">Header</A>, java.io.Serializable</DD>
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<DT><PRE>public interface <B>MinExpiresHeader</B><DT>extends <A HREF="../../../javax/sip/header/ExpiresHeader.html" title="interface in javax.sip.header">ExpiresHeader</A></DL>
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The Min-Expires header field conveys the minimum refresh interval supported for soft-state elements managed by that server. This includes Contact header fields that are stored by a registrar. The header field contains a decimal integer number of seconds from 0 to (2**32)-1. <p> Allowing the registrar to set the registration interval protects it against excessively frequent registration refreshes while limiting the state that it needs to maintain and decreasing the likelihood of registrations going stale. The expiration interval of a registration is frequently used in the creation of services. An example is a follow-me service, where the user may only be available at a terminal for a brief period. Therefore, registrars should accept brief registrations; a request should only be rejected if the interval is so short that the refreshes would degrade registrar performance. <p> If a User Agent receives a 423 (Interval Too Brief) response to a REGISTER request, it MAY retry the registration after making the expiration interval of all contact addresses in the REGISTER request equal to or greater than the expiration interval within the Min-Expires header field of the 423 (Interval Too Brief) response. The Min-Expires header field that states the minimum expiration interval the registrar is willing to honor. <p> For Example:<br> <code>Min-Expires: 60</code>
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<DD>BEA Systems, NIST</DD>
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<CODE>static java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/sip/header/MinExpiresHeader.html#NAME">NAME</A></B></CODE>
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Name of ExpiresHeader</TD>
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<TH ALIGN="left"><B>Methods inherited from interface javax.sip.header.<A HREF="../../../javax/sip/header/ExpiresHeader.html" title="interface in javax.sip.header">ExpiresHeader</A></B></TH>
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<TD><CODE><A HREF="../../../javax/sip/header/ExpiresHeader.html#getExpires()">getExpires</A>, <A HREF="../../../javax/sip/header/ExpiresHeader.html#setExpires(int)">setExpires</A></CODE></TD>
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<A NAME="NAME"><!-- --></A><H3>
NAME</H3>
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static final java.lang.String <B>NAME</B></PRE>
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<DD>Name of ExpiresHeader
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<DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#javax.sip.header.MinExpiresHeader.NAME">Constant Field Values</A></DL>
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<b>JSIP API v1.2<br><font size=-1>November 2006</font></b></EM>
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<center>If you have any comments, please mail them to <a href=mailto:JAIN-SIP-INTEREST@java.sun.com>JAIN-SIP-INTEREST@java.sun.com</a> after subscribing at <a href=http://archives.java.sun.com>http://archives.java.sun.com</a><br><a href=../../../copyright.html>Copyright</a> - 2006 BEA Systems and Sun Microsystems</center>
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