Memory Leak in InMemoryConnectionStore

[sbernard31]

See fore more details : eclipse-californium/californium#1099.

This affects Leshan-1.0.0-M11 and Leshan-1.0.0-M12.

A possible workaround is to use a fixed version of InMemoryConnectionStore by getting the corresponding version from californium (depending on which version of Leshan you are using) and applying this fix.

Then create a custom DTLSConnector with the fixed store like this :

builder.setEndpointFactory(new DefaultEndpointFactory() {
    @Override
    protected Connector createSecuredConnector(DtlsConnectorConfig dtlsConfig) {
        FixedInMemoryConnectionStore store = new FixedInMemoryConnectionStore(dtlsConfig.getMaxConnections(),
                dtlsConfig.getStaleConnectionThreshold(), null).setTag(dtlsConfig.getLoggingTag());
        return new DTLSConnector(dtlsConfig, store){};
    }
});

Maybe another possible workaround it to create a dummy SessionCache but I don't test it.

[sbernard31]

Californium 2.0.0-RC1 is integrated in master. So this should be fixed now in master.