How to close persistent non-idle connections after some time

[Boris Granveaud]

Hi,

I would like to automatically close persistent connections after some 
time, *even if they are used* (but only at the end of a query of course).

I need this so that when I would like to deploy a new middle server, I 
can remove it from the production pool of servers and wait for example 
60 seconds that the front webapps close their persistent HttpClient 
connections.

I have seen that you can set a timeToLive parameter in 
PoolingHttpClientConnectionManager but this is used only to close idle 
connections.

I cannot use ConnectionReuseStrategy and KeepAliveStrategy because I 
don't have access to the connection that is used.

Finally, I tried to extend PoolingHttpClientConnectionManager to remove 
the call to updateExpiry in releaseConnection:

    public void releaseConnection(
            final HttpClientConnection managedConn,
            final Object state,
            final long keepalive, final TimeUnit tunit) {
...
                if (conn.isOpen()) {
                    entry.setState(state);
                    entry.updateExpiry(keepalive, tunit != null ? tunit 
: TimeUnit.MILLISECONDS);

but this is not feasible as CPoolEntry and CPoolProxy which are used in 
this method are not public classes.

Any idea?

Thanks,
Boris.