Jetty Websocket IdleTimeout

Question

I\'ve been working on annotated websockets lately, with the Jetty API (9.4.5 release) , and made a chat with it.

However i got an issue, after 5 minute

Answer 1

Annotated WebSockets have their own timeout settings in the annotation.

@WebSocket(maxIdleTime=30000)

Answer 2

The annotation @WebSocket has option:

int maxIdleTime() default -2;

In fact it's not clear what does it mean.

If you check implementation, you can find:

if (anno.maxIdleTime() > 0)
{
this.policy.setIdleTimeout(anno.maxIdleTime());
}

method implementation:

/**
 * The time in ms (milliseconds) that a websocket may be idle before closing.
 * 
 * @param ms
 *            the timeout in milliseconds
 */
public void setIdleTimeout(long ms)
{
    assertGreaterThan("IdleTimeout",ms,0);
    this.idleTimeout = ms;
}

and finally:

/**
 * The time in ms (milliseconds) that a websocket may be idle before closing.
 * <p>
 * Default: 300000 (ms)
 */
private long idleTimeout = 300000;

Conclusion: negative value apply default behavior (300000 ms). You need to configure 'idleTimeout' according your business value.

PS: solved my case with:

@WebSocket(maxIdleTime = Integer.MAX_VALUE)