Aol updating definition files
Ultrapeers do that check before forwarding a query to a leaf node, and also before forwarding the query to a peer ultra node provided this is the last hop the query can travel.
If a search request turns up a result, the node that has the result contacts the searcher.
The shutdown did not affect, for example, Frost Wire, a fork of Lime Wire created in 2004 that carries neither the remote-disabling code nor adware.
in the size of the network, because, while negotiating the injunction, Lime Wire staff had inserted remote-disabling code into the software.
As the injunction came into force, users who had installed affected versions (newer than 5.5.10) were cut off from the P2P network.
Instead of treating every user as client and server, some users were now treated as ultrapeers, routing search requests and responses for users connected to them. In late 2001, the gnutella client Lime Wire Basic became free and open source.
In February 2002, Morpheus, a commercial file sharing group, abandoned its Fast Track-based peer-to-peer software and released a new client based on the free and open source gnutella client Gnucleus.
The word gnutella today refers not to any one project or piece of software, but to the open protocol used by the various clients.