Relay is a packet-switched WAN you can watch. Send a message, see it split, route around a broken link and reassemble. Then chat across the same network.
Network warming up
The sender slices the message into small packets. Each one is stamped with a sequence number, a destination and a hop limit.
Every router picks the next hop on its own, weighing distance, bandwidth and how long its queues are. Packets of one message can take different roads.
The receiver puts the packets back in order, asks again for any that went missing, and only then shows the message.
Pick one and press Run. Drag the map to turn it, and click any router, link or parcel to inspect it.
This phone is Asha, on the Relay network. Message anyone and the parcels cross the map above before the other person sees them. Contacts reply on their own, and you can switch who you are with the menu in the chat list. The ticks follow the real journey.
The latest chat message, parcel by parcel.
Every parcel sent in this session, with the road it took.
| Message | Parcel | Route | Bytes | Sent | Arrived | Resent | Status |
|---|