<i>android-udp-bus</i> is an application to create UDP forwarders, hubs and other tools. To aid building VPNs, video streaming and other tricky network uses.

<br><b>Features:</b>

* Binding UDP socket on specified port and exchanging traffic between all known peers

* Exchanging traffic between multiple UDP sockets

* Remembering specified number of peers that have sent us some datagram, with optional expiration policy

* Directly specifying peers to send datagrams to. Combined with remembering, it allows using the application as UDP forwarder.

* Joining multicast groups, setting TTL, TOS, read and write buffer sizes and other socket options.

* Periodical sending of hardcoded datagrams to specified peers (e.g. to keep NAT open)

* Displaying of detailed statistics of the traffic

* Starting multiple isolated hubs, each with distinct set of ports. Can even act as a simplistic load balancer due to <code>SO_REUSEPORT</code>.

The application does not send datagrams back to sender.

<br><b>Limitations:</b>

* UI is not user-friendly.

* Not all features are exposed in GUI - you may want to add some undocumented fields to the JSON manually.

* Not very optimised for speed or latency. It may be slightly slower than socat udp4-l udp.

* Not everything is tested yet

* Documentation is lacking

Creator