# Lightws
![Lightws](https://github.com/zephyrchien/lightws/workflows/ci/badge.svg)
![Lightws](https://github.com/zephyrchien/lightws/workflows/build/badge.svg)
[![Released API docs](https://docs.rs/lightws/badge.svg)](https://docs.rs/lightws)
[![crates.io](https://img.shields.io/crates/v/lightws.svg)](https://crates.io/crates/lightws)
Lightweight websocket implement for stream transmission.
## Features
- Avoid heap allocation.
- Avoid buffering frame payload.
- Use vectored-io if available.
- Transparent Read/Write over the underlying IO source.
## High-level API
[role, endpoint, stream]
Std:
```rust
{
// handshake
let stream = Endpoint<TcpStream, Client>::connect(tcp, buf, host, path)?;
// read some data
stream.read(&mut buf)?;
// write some data
stream.write(&buf)?;
}
```
Async:
```rust
{
// handshake
let stream = Endpoint<TcpStream, Client>::connect_async(tcp, buf, host, path).await?;
// read some data
stream.read(&mut buf).await?;
// write some data
stream.write(&buf).await?;
}
```
## Low-level API
[frame, handshake]
Frame:
```rust
{
// encode a frame head
let head = FrameHead::new(...);
let offset = unsafe {
head.encode_unchecked(&mut buf);
};
// decode a frame head
let (head, offset) = FrameHead::decode(&buf).unwrap();
}
```
Handshake:
```rust
{
// make a client handshake request
let request = Request::new(b"/ws", b"example.com", "sec-key..");
let offset = request.encode(&mut buf).unwrap();
// parse a server handshake response
let mut custom_headers = HttpHeader::new_storage();
let mut response = Response::new_storage(&mut custom_headers);
let offset = response.decode(&buf).unwrap();
}
```