Crate web_transport_wasm 

WebTransport wrapper for WebAssembly.

This crate wraps the WebTransport API and provides ergonomic Rust bindings. Some liberties have been taken to make the API more Rust-like and closer to native.

Poll and async

The browser API is a set of promises, but the surface here is a state machine: every operation is a poll_* method that a caller steps from its own loop, with the async methods as thin wrappers over them. That is what implements web_transport_trait::poll, so a sans-I/O caller needs no adapter, and it is what makes an abandoned operation safe — the promise stays subscribed, so a chunk or an accepted stream is never dropped on the floor between polls.

Requirements

web-sys still gates the WebTransport bindings behind --cfg=web_sys_unstable_apis, so this crate cannot compile without that flag. It cannot be enabled by a dependency; it has to be set by the final build, for example via .cargo/config.toml:

[build]
rustflags = ["--cfg=web_sys_unstable_apis"]
rustdocflags = ["--cfg=web_sys_unstable_apis"]

rustdocflags is separate because rustdoc does not inherit rustflags; without it cargo doc and doctests fail even though cargo build succeeds.

Re-exports

pub use web_transport_trait as generic;

Structs

Client

Build a client with the given URL and options.

ClientBuilder

See WebTransportOptions.

RecvStream

A stream of bytes received from the remote peer.

SendStream

A stream of bytes sent to the remote peer.

Session

A session represents a connection between a client and a server.

Enums

CongestionControl

The WebTransportCongestionControl enum.

Error

A WebTransport error classified based on the source.