SessionExpiresHeader (OCSIP 3.1 RA Type)

All Superinterfaces:

Cloneable, javax.sip.header.Header, javax.sip.header.Parameters, Serializable
```
public interface SessionExpiresHeader
extends javax.sip.header.Header, javax.sip.header.Parameters
```
Session-Expires header from the Session Timers Draft RFC.
The Session-Expires header field conveys the session interval for a SIP session. It is placed only in INVITE or UPDATE requests, as well as in any 2xx response to an INVITE or UPDATE. Like the SIP Expires header field, it contains a delta-time.
The syntax of the Session-Expires header field is:
```
  Session-Expires  = ('Session-Expires' / 'x') HCOLON delta-seconds
                       *(SEMI se-params)
  se-params        = refresher-param / generic-param
  refresher-param  = 'refresher' EQUAL  ('uas' / 'uac')
 
```

Field Summary

Fields
Modifier and Type Field Description

static String COMPACT_NAME

static String NAME

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`int`	`getInterval()`	Gets the session refresh interval requested by this Session-Expires header.
`SessionRefresher`	`getRefresher()`	Get the refresher parameter, which determines the party responsible for sending session refresh requests (none, uac or uas).
`void`	`setInterval(int interval)`	Set the session refresh interval time.
`void`	`setRefresher(SessionRefresher refresher)`	Set the refresher for this session.

Methods inherited from interface javax.sip.header.Header
clone, equals, getName, hashCode, toString

Methods inherited from interface javax.sip.header.Parameters
getParameter, getParameterNames, removeParameter, setParameter

- Field Detail
  - NAME
```
static final String NAME
```
    See Also:
    
    Constant Field Values
  - COMPACT_NAME
```
static final String COMPACT_NAME
```
    See Also:
    
    Constant Field Values
- Method Detail
  - getInterval
```
int getInterval()
```
    Gets the session refresh interval requested by this Session-Expires header.
    
    Returns:
    
    the session refresh interval, in seconds.
  - setInterval
```
void setInterval(int interval)
          throws IllegalArgumentException
```
    Set the session refresh interval time.
    
    Parameters:
    
    interval - the requested session refresh interval.
    
    Throws:
    
    IllegalArgumentException - if interval is less than 90 seconds, the minimum refresh interval permitted by the spec.
  - getRefresher
```
SessionRefresher getRefresher()
```
    Get the refresher parameter, which determines the party responsible for sending session refresh requests (none, uac or uas).
    
    Returns:
    
    the value of the refresher parameter, which will be either SessionRefresher.UAC, SessionRefresher.UAS or SessionRefresher.NONE (no refresher specified).
  - setRefresher
```
void setRefresher(SessionRefresher refresher)
```
    Set the refresher for this session.
    
    Parameters:
    
    refresher - the party who will perform session refresh requests for the session, either SessionRefresher.UAC, SessionRefresher.UAS or SessionRefresher.NONE (no refresher specified).