Function tokio_tungstenite::accept_hdr_async

pub fn accept_hdr_async<S, C>(stream: S, callback: C) -> AcceptAsync<S, C> where
    S: AsyncRead + AsyncWrite,
    C: Callback, 

Accepts a new WebSocket connection with the provided stream.

This function does the same as accept_async() but accepts an extra callback for header processing. The callback receives headers of the incoming requests and is able to add extra headers to the reply.