spex

spex — streaming protocol experiment.

A toy file-transfer protocol over UDP that demonstrates chunking, hashing, out-of-order delivery, and selective retransmission.

Crates

• spex-core — chunking, hashing, file metadata, and reassembly
• spex-net — sender and receiver tasks built on top of tokio::net::UdpSocket
• spex-cli — spex command line entry point

Building

cargo build

Usage

In one terminal, start the receiver:

cargo run -p spex-cli -- recv --bind 127.0.0.1:7002 --peer 127.0.0.1:7001 --out out.bin

In another, send a file:

cargo run -p spex-cli -- send --bind 127.0.0.1:7001 --peer 127.0.0.1:7002 --file in.bin

Use -v for info logs and -vv for debug logs.

Testing

cargo test --all

License

MIT — see LICENSE.