Source code
Revision control
Copy as Markdown
Other Tools
use base64::engine::general_purpose::STANDARD as ENGINE;
use base64::Engine;
use bytes::Bytes;
use sha1::{Digest, Sha1};
use super::SecWebsocketKey;
/// The `Sec-Websocket-Accept` header.
///
/// This header is used in the Websocket handshake, sent back by the
/// server indicating a successful handshake. It is a signature
/// of the `Sec-Websocket-Key` header.
///
/// # Example
///
/// ```no_run
/// # extern crate headers;
/// use headers::{SecWebsocketAccept, SecWebsocketKey};
///
/// let sec_key: SecWebsocketKey = /* from request headers */
/// # unimplemented!();
///
/// let sec_accept = SecWebsocketAccept::from(sec_key);
/// ```
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct SecWebsocketAccept(::HeaderValue);
derive_header! {
SecWebsocketAccept(_),
name: SEC_WEBSOCKET_ACCEPT
}
impl From<SecWebsocketKey> for SecWebsocketAccept {
fn from(key: SecWebsocketKey) -> SecWebsocketAccept {
sign(key.0.as_bytes())
}
}
fn sign(key: &[u8]) -> SecWebsocketAccept {
let mut sha1 = Sha1::default();
sha1.update(key);
sha1.update(&b"258EAFA5-E914-47DA-95CA-C5AB0DC85B11"[..]);
let b64 = Bytes::from(ENGINE.encode(&sha1.finalize()));
let val = ::HeaderValue::from_maybe_shared(b64).expect("base64 is a valid value");
SecWebsocketAccept(val)
}
#[cfg(test)]
mod tests {
use super::super::{test_decode, test_encode};
use super::*;
#[test]
fn key_to_accept() {
let key = test_decode::<SecWebsocketKey>(&["dGhlIHNhbXBsZSBub25jZQ=="]).expect("key");
let accept = SecWebsocketAccept::from(key);
let headers = test_encode(accept);
assert_eq!(
headers["sec-websocket-accept"],
"s3pPLMBiTxaQ9kYGzzhZRbK+xOo="
);
}
}