pub fn connect(&self) -> impl Future<Output = Result<WsConnection<F>, WsClientError>> {
        let head = self.head.clone();
        let max_size = self.max_size;
        let server_mode = self.server_mode;
        let to = self.timeout;
        let keepalive_timeout = self.keepalive_timeout;
        let mut headers = self
            .extra_headers
            .borrow_mut()
            .take()
            .unwrap_or_else(HeaderMap::new);

        // Generate a random key for the `Sec-WebSocket-Key` header.
        // a base64-encoded (see Section 4 of [RFC4648]) value that,
        // when decoded, is 16 bytes in length (RFC 6455)
        let mut sec_key: [u8; 16] = [0; 16];
        WyRand::new().fill(&mut sec_key);
        let key = base64::encode(&sec_key);

        headers.insert(
            header::SEC_WEBSOCKET_KEY,
            HeaderValue::try_from(key.as_str()).unwrap(),
        );

        let msg = Connect::new(head.uri.clone()).set_addr(self.addr);
        let fut = self.connector.call(msg);
        log::trace!("Open ws connection to {:?} addr: {:?}", head.uri, self.addr);

        async move {
            let io = fut.await?;

            // create Framed and send request
            let codec = h1::ClientCodec::default();

            // send request and read response
            let fut = async {
                log::trace!("Sending ws handshake http message");
                io.send(
                    (RequestHeadType::Rc(head, Some(headers)), BodySize::None).into(),
                    &codec,
                )
                .await?;
                log::trace!("Waiting for ws handshake response");
                io.recv(&codec)
                    .await?
                    .ok_or(WsClientError::Disconnected(None))
            };

            // set request timeout
            let response = if to.non_zero() {
                timeout(to, fut)
                    .await
                    .map_err(|_| WsClientError::Timeout)
                    .and_then(|res| res)?
            } else {
                fut.await?
            };
            log::trace!("Ws handshake response is received {:?}", response);

            // verify response
            if response.status != StatusCode::SWITCHING_PROTOCOLS {
                return Err(WsClientError::InvalidResponseStatus(response.status));
            }

            // Check for "UPGRADE" to websocket header
            let has_hdr = if let Some(hdr) = response.headers.get(&header::UPGRADE) {
                if let Ok(s) = hdr.to_str() {
                    s.to_ascii_lowercase().contains("websocket")
                } else {
                    false
                }
            } else {
                false
            };
            if !has_hdr {
                log::trace!("Invalid upgrade header");
                return Err(WsClientError::InvalidUpgradeHeader);
            }

            // Check for "CONNECTION" header
            if let Some(conn) = response.headers.get(&header::CONNECTION) {
                if let Ok(s) = conn.to_str() {
                    if !s.to_ascii_lowercase().contains("upgrade") {
                        log::trace!("Invalid connection header: {}", s);
                        return Err(WsClientError::InvalidConnectionHeader(conn.clone()));
                    }
                } else {
                    log::trace!("Invalid connection header: {:?}", conn);
                    return Err(WsClientError::InvalidConnectionHeader(conn.clone()));
                }
            } else {
                log::trace!("Missing connection header");
                return Err(WsClientError::MissingConnectionHeader);
            }

            if let Some(hdr_key) = response.headers.get(&header::SEC_WEBSOCKET_ACCEPT) {
                let encoded = ws::hash_key(key.as_ref());
                if hdr_key.as_bytes() != encoded.as_bytes() {
                    log::trace!(
                        "Invalid challenge response: expected: {} received: {:?}",
                        encoded,
                        key
                    );
                    return Err(WsClientError::InvalidChallengeResponse(
                        encoded,
                        hdr_key.clone(),
                    ));
                }
            } else {
                log::trace!("Missing SEC-WEBSOCKET-ACCEPT header");
                return Err(WsClientError::MissingWebSocketAcceptHeader);
            };
            log::trace!("Ws handshake response verification is completed");

            // response and ws io
            Ok(WsConnection::new(
                io,
                ClientResponse::with_empty_payload(response),
                if server_mode {
                    ws::Codec::new().max_size(max_size)
                } else {
                    ws::Codec::new().max_size(max_size).client_mode()
                },
                keepalive_timeout,
            ))
        }
    }
/// Complete request construction and connect to a websockets server.
Complete request construction and connect to a websockets server.
Complete request construction and connect to a websockets server .
pub fn connect(&self) -> impl Future<Output = Result<WsConnection<F>, WsClientError>> {
        let head = self.head.clone();
        let max_size = self.max_size;
        let server_mode = self.server_mode;
        let to = self.timeout;
        let keepalive_timeout = self.keepalive_timeout;
        let mut headers = self
            .extra_headers
            .borrow_mut()
            .take()
            .unwrap_or_else(HeaderMap::new);
        // Generate a random key for the `Sec-WebSocket-Key` header.
        // a base64-encoded (see Section 4 of [RFC4648]) value that,
        // when decoded, is 16 bytes in length (RFC 6455)
        let mut sec_key: [u8; 16] = [0; 16];
        WyRand::new().fill(&mut sec_key);
        let key = base64::encode(&sec_key);
        headers.insert(
            header::SEC_WEBSOCKET_KEY,
            HeaderValue::try_from(key.as_str()).unwrap(),
        );
        let msg = Connect::new(head.uri.clone()).set_addr(self.addr);
        let fut = self.connector.call(msg);
        log::trace!("Open ws connection to {:?} addr: {:?}", head.uri, self.addr);
        async move {
            let io = fut.await?;
            // create Framed and send request
            let codec = h1::ClientCodec::default();
            // send request and read response
            let fut = async {
                log::trace!("Sending ws handshake http message");
                io.send(
                    (RequestHeadType::Rc(head, Some(headers)), BodySize::None).into(),
                    &codec,
                )
                .await?;
                log::trace!("Waiting for ws handshake response");
                io.recv(&codec)
                    .await?
                    .ok_or(WsClientError::Disconnected(None))
            };
            // set request timeout
            let response = if to.non_zero() {
                timeout(to, fut)
                    .await
                    .map_err(|_| WsClientError::Timeout)
                    .and_then(|res| res)?
            } else {
                fut.await?
            };
            log::trace!("Ws handshake response is received {:?}", response);
            // verify response
            if response.status != StatusCode::SWITCHING_PROTOCOLS {
                return Err(WsClientError::InvalidResponseStatus(response.status));
            }
            // Check for "UPGRADE" to websocket header
            let has_hdr = if let Some(hdr) = response.headers.get(&header::UPGRADE) {
                if let Ok(s) = hdr.to_str() {
                    s.to_ascii_lowercase().contains("websocket")
                } else {
                    false
                }
            } else {
                false
            };
            if !has_hdr {
                log::trace!("Invalid upgrade header");
                return Err(WsClientError::InvalidUpgradeHeader);
            }
            // Check for "CONNECTION" header
            if let Some(conn) = response.headers.get(&header::CONNECTION) {
                if let Ok(s) = conn.to_str() {
                    if !s.to_ascii_lowercase().contains("upgrade") {
                        log::trace!("Invalid connection header: {}", s);
                        return Err(WsClientError::InvalidConnectionHeader(conn.clone()));
                    }
                } else {
                    log::trace!("Invalid connection header: {:?}", conn);
                    return Err(WsClientError::InvalidConnectionHeader(conn.clone()));
                }
            } else {
                log::trace!("Missing connection header");
                return Err(WsClientError::MissingConnectionHeader);
            }
            if let Some(hdr_key) = response.headers.get(&header::SEC_WEBSOCKET_ACCEPT) {
                let encoded = ws::hash_key(key.as_ref());
                if hdr_key.as_bytes() != encoded.as_bytes() {
                    log::trace!(
                        "Invalid challenge response: expected: {} received: {:?}",
                        encoded,
                        key
                    );
                    return Err(WsClientError::InvalidChallengeResponse(
                        encoded,
                        hdr_key.clone(),
                    ));
                }
            } else {
                log::trace!("Missing SEC-WEBSOCKET-ACCEPT header");
                return Err(WsClientError::MissingWebSocketAcceptHeader);
            };
            log::trace!("Ws handshake response verification is completed");
            // response and ws io
            Ok(WsConnection::new(
                io,
                ClientResponse::with_empty_payload(response),
                if server_mode {
                    ws::Codec::new().max_size(max_size)
                } else {
                    ws::Codec::new().max_size(max_size).client_mode()
                },
                keepalive_timeout,
            ))
        }
    }
pub fn connect ( & self ) -> impl Future < Output = Result < WsConnection < F > , WsClientError > > { let head = self . head . clone ( ) ; let max_size = self . max_size ; let server_mode = self . server_mode ; let to = self . timeout ; let keepalive_timeout = self . keepalive_timeout ; let mut headers = self . extra_headers . borrow_mut ( ) . take ( ) . unwrap_or_else ( HeaderMap :: new ) ; // Generate a random key for the `Sec-WebSocket-Key` header. // a base64-encoded (see Section 4 of [RFC4648]) value that, // when decoded, is 16 bytes in length (RFC 6455) let mut sec_key : [ u8 ; 16 ] = [ 0 ; 16 ] ; WyRand :: new ( ) . fill ( & mut sec_key ) ; let key = base64 :: encode ( & sec_key ) ; headers . insert ( header :: SEC_WEBSOCKET_KEY , HeaderValue :: try_from ( key . as_str ( ) ) . unwrap ( ) , ) ; let msg = Connect :: new ( head . uri . clone ( ) ) . set_addr ( self . addr ) ; let fut = self . connector . call ( msg ) ; log :: trace ! ( " " head uri self addr ) ; async move { let io = fut . await ? ; // create Framed and send request let codec = h1 :: ClientCodec :: default ( ) ; // send request and read response let fut = async { log :: trace ! ( " " ) ; io . send ( ( RequestHeadType :: Rc ( head , Some ( headers ) ) , BodySize :: None ) . into ( ) , & codec , ) . await ? ; log :: trace ! ( " " ) ; io . recv ( & codec ) . await ? . ok_or ( WsClientError :: Disconnected ( None ) ) } ; // set request timeout let response = if to . non_zero ( ) { timeout ( to , fut ) . await . map_err ( | _ | WsClientError :: Timeout ) . and_then ( | res | res ) ? } else { fut . await ? } ; log :: trace ! ( " " response ) ; // verify response if response . status != StatusCode :: SWITCHING_PROTOCOLS { return Err ( WsClientError :: InvalidResponseStatus ( response . status ) ) ; } // Check for "UPGRADE" to websocket header let has_hdr = if let Some ( hdr ) = response . headers . get ( & header :: UPGRADE ) { if let Ok ( s ) = hdr . to_str ( ) { s . to_ascii_lowercase ( ) . contains ( " " ) } else { false } } else { false } ; if ! has_hdr { log :: trace ! ( " " ) ; return Err ( WsClientError :: InvalidUpgradeHeader ) ; } // Check for "CONNECTION" header if let Some ( conn ) = response . headers . get ( & header :: CONNECTION ) { if let Ok ( s ) = conn . to_str ( ) { if ! s . to_ascii_lowercase ( ) . contains ( " " ) { log :: trace ! ( " " s ) ; return Err ( WsClientError :: InvalidConnectionHeader ( conn . clone ( ) ) ) ; } } else { log :: trace ! ( " " conn ) ; return Err ( WsClientError :: InvalidConnectionHeader ( conn . clone ( ) ) ) ; } } else { log :: trace ! ( " " ) ; return Err ( WsClientError :: MissingConnectionHeader ) ; } if let Some ( hdr_key ) = response . headers . get ( & header :: SEC_WEBSOCKET_ACCEPT ) { let encoded = ws :: hash_key ( key . as_ref ( ) ) ; if hdr_key . as_bytes ( ) != encoded . as_bytes ( ) { log :: trace ! ( " " encoded key ) ; return Err ( WsClientError :: InvalidChallengeResponse ( encoded , hdr_key . clone ( ) , ) ) ; } } else { log :: trace ! ( " " ) ; return Err ( WsClientError :: MissingWebSocketAcceptHeader ) ; } ; log :: trace ! ( " " ) ; // response and ws io Ok ( WsConnection :: new ( io , ClientResponse :: with_empty_payload ( response ) , if server_mode { ws :: Codec :: new ( ) . max_size ( max_size ) } else { ws :: Codec :: new ( ) . max_size ( max_size ) . client_mode ( ) } , keepalive_timeout , ) ) } }
Complete request construction and connect to a websockets server.
Complete request construction and connect to a websockets server .
&self
&self