compact1, compact2, compact3

javax.net.ssl

Interface SSLSessionContext

public interface SSLSessionContext

A SSLSessionContext represents a set of SSLSessions associated with a single entity. For example, it could be associated with a server or client who participates in many sessions concurrently.

Not all environments will contain session contexts.

There are SSLSessionContext parameters that affect how sessions are stored:

• Sessions can be set to expire after a specified time limit.
• The number of sessions that can be stored in context can be limited.

A session can be retrieved based on its session id, and all session id's in a SSLSessionContext can be listed.

Since:

1.4

See Also:

SSLSession

Method Summary

Modifier and Type	Method and Description
Enumeration<byte[]>	getIds() Returns an Enumeration of all session id's grouped under this SSLSessionContext.
SSLSession	getSession(byte[] sessionId) Returns the SSLSession bound to the specified session id.
int	getSessionCacheSize() Returns the size of the cache used for storing SSLSession objects grouped under this SSLSessionContext.
int	getSessionTimeout() Returns the timeout limit of SSLSession objects grouped under this SSLSessionContext.
void	setSessionCacheSize(int size) Sets the size of the cache used for storing SSLSession objects grouped under this SSLSessionContext.
void	setSessionTimeout(int seconds) Sets the timeout limit for SSLSession objects grouped under this SSLSessionContext.

Method Detail

getSession

SSLSession getSession(byte[] sessionId)

Returns the SSLSession bound to the specified session id.

Throws:

NullPointerException - if sessionId is null.

Parameters:

sessionId - the Session identifier

Returns:

the SSLSession or null if the specified session id does not refer to a valid SSLSession.

getIds

Enumeration<byte[]> getIds()

Returns an Enumeration of all session id's grouped under this SSLSessionContext.

Returns:

an enumeration of all the Session id's

setSessionTimeout

void setSessionTimeout(int seconds)
                throws IllegalArgumentException

Sets the timeout limit for SSLSession objects grouped under this SSLSessionContext.

If the timeout limit is set to 't' seconds, a session exceeds the timeout limit 't' seconds after its creation time. When the timeout limit is exceeded for a session, the SSLSession object is invalidated and future connections cannot resume or rejoin the session. A check for sessions exceeding the timeout is made immediately whenever the timeout limit is changed for this SSLSessionContext.

Throws:

IllegalArgumentException - if the timeout specified is < 0.

API Note:

Note that the JDK Implementation uses default values for both the session cache size and timeout. See getSessionCacheSize and getSessionTimeout for more information. Applications should consider their performance requirements and override the defaults if necessary.

Parameters:

seconds - the new session timeout limit in seconds; zero means there is no limit.

See Also:

getSessionTimeout()

getSessionTimeout

int getSessionTimeout()

Returns the timeout limit of SSLSession objects grouped under this SSLSessionContext.

If the timeout limit is set to 't' seconds, a session exceeds the timeout limit 't' seconds after its creation time. When the timeout limit is exceeded for a session, the SSLSession object is invalidated and future connections cannot resume or rejoin the session. A check for sessions exceeding the timeout limit is made immediately whenever the timeout limit is changed for this SSLSessionContext.

Implementation Note:

The JDK implementation returns the session timeout as set by the setSessionTimeout method, or if not set, a default value of 86400 seconds (24 hours).

Returns:

the session timeout limit in seconds; zero means there is no limit.

See Also:

setSessionTimeout(int)

setSessionCacheSize

void setSessionCacheSize(int size)
                  throws IllegalArgumentException

Sets the size of the cache used for storing SSLSession objects grouped under this SSLSessionContext.

Throws:

IllegalArgumentException - if the specified size is < 0.

API Note:

Note that the JDK Implementation uses default values for both the session cache size and timeout. See getSessionCacheSize and getSessionTimeout for more information. Applications should consider their performance requirements and override the defaults if necessary.

Parameters:

size - the new session cache size limit; zero means there is no limit.

See Also:

getSessionCacheSize()

getSessionCacheSize

int getSessionCacheSize()

Returns the size of the cache used for storing SSLSession objects grouped under this SSLSessionContext.

Implementation Note:

The JDK implementation returns the cache size as set by the setSessionCacheSize method, or if not set, the value of the system property. If neither is set, it returns a default value of 20480.

Returns:

size of the session cache; zero means there is no size limit.

See Also:

setSessionCacheSize(int)