use bytes::Buf; use httparse; use httparse::Status; use error::{Error, Result}; use super::{Headers, Httparse, FromHttparse, convert_key, MAX_HEADERS}; /// Request from the client. pub struct Request { path: String, headers: Headers, } impl Request { /// Parse the request from a stream. pub fn parse(input: &mut B) -> Result> { Request::parse_http(input) } /// Reply to the response. pub fn reply(&self) -> Result> { let key = self.headers.find_first("Sec-WebSocket-Key") .ok_or(Error::Protocol("Missing Sec-WebSocket-Key".into()))?; let reply = format!("\ HTTP/1.1 101 Switching Protocols\r\n\ Connection: Upgrade\r\n\ Upgrade: websocket\r\n\ Sec-WebSocket-Accept: {}\r\n\ \r\n", convert_key(key)?); Ok(reply.into()) } } impl Httparse for Request { fn httparse(buf: &[u8]) -> Result> { let mut hbuffer = [httparse::EMPTY_HEADER; MAX_HEADERS]; let mut req = httparse::Request::new(&mut hbuffer); Ok(match req.parse(buf)? { Status::Partial => None, Status::Complete(size) => Some((size, Request::from_httparse(req)?)), }) } } impl<'h, 'b: 'h> FromHttparse> for Request { fn from_httparse(raw: httparse::Request<'h, 'b>) -> Result { if raw.method.expect("Bug: no method in header") != "GET" { return Err(Error::Protocol("Method is not GET".into())); } if raw.version.expect("Bug: no HTTP version") < /*1.*/1 { return Err(Error::Protocol("HTTP version should be 1.1 or higher".into())); } Ok(Request { path: raw.path.expect("Bug: no path in header").into(), headers: Headers::from_httparse(raw.headers)? }) } } #[cfg(test)] mod tests { use super::Request; use std::io::Cursor; #[test] fn request_parsing() { const data: &'static [u8] = b"GET /script.ws HTTP/1.1\r\nHost: foo.com\r\n\r\n"; let mut inp = Cursor::new(data); let req = Request::parse(&mut inp).unwrap().unwrap(); assert_eq!(req.path, "/script.ws"); assert_eq!(req.headers.find_first("Host"), Some(&b"foo.com"[..])); } #[test] fn request_replying() { const data: &'static [u8] = b"\ GET /script.ws HTTP/1.1\r\n\ Host: foo.com\r\n\ Connection: upgrade\r\n\ Upgrade: websocket\r\n\ Sec-WebSocket-Version: 13\r\n\ Sec-WebSocket-Key: dGhlIHNhbXBsZSBub25jZQ==\r\n\ \r\n"; let mut inp = Cursor::new(data); let req = Request::parse(&mut inp).unwrap().unwrap(); let reply = req.reply().unwrap(); } }