Drift — WebTransport Demos

Live Cursors

Move your mouse — everyone sees everyone's cursor in real-time via WebTransport datagrams (unreliable, unordered, minimal latency — like UDP).

Datagrams Unreliable ~0ms overhead

Move your mouse here

Dot Arena

Collect glowing dots for points. Movement broadcasts via datagrams — ultra-low latency positional updates over QUIC.

Datagrams Unreliable Multiplexed

Use arrow keys or WASD to move

Stream Chat

Each message opens a bidirectional QUIC stream — reliable, ordered delivery. The server echoes an ACK on the same stream to measure round-trip latency.

Bidirectional Streams Reliable Latency measured

Connect to start chatting...

Speed Test

Shows QUIC's multiplexed streams — multiple parallel transfers without head-of-line blocking. Compare 4 parallel streams vs. a single stream.

Unidirectional Streams Multiplexed No HOL blocking

Stream 1

—

Stream 2

—

Stream 3

—

Stream 4

—

Total transferred —

Time —

Aggregate speed —

Latency

Measures datagram round-trip time by sending pings every 200ms. Datagrams are the fastest path — unreliable, unordered, zero stream overhead.

Datagrams Unreliable RTT measurement

Current —

Min —

Avg —

Max —

Clients online: — Server uptime: —