CompositeTransportChannel should retry all entries in the URI list until it times out

When ReliableTransportChannel tries to reestablish a broken connection, CompositeTransportChannel extracts URIs from the list as connection attempts are made and an URI that fails will never be retried. The establishConnection() loop in CompositeTransportChannel should work on a copy of the URI list from which the URIs are extracted. When the list is exhausted, it should wrap around and restart. A patch is attached to this issue.