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chore: code cleanup

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This commit is contained in:
wwqgtxx 2023-10-17 12:46:41 +08:00
parent d75a0e69a0
commit 11ed4a56bd
1 changed files with 27 additions and 29 deletions
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56
transport/vmess/websocket.go
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@ -353,17 +353,11 @@ func streamWebsocketConn(ctx context.Context, conn net.Conn, c *WebsocketConfig,
RawQuery: u.RawQuery,
}
headers := http.Header{"User-Agent": []string{"Go-http-client/1.1"}} // match golang's net/http
headers := http.Header{}
headers.Set("User-Agent", "Go-http-client/1.1") // match golang's net/http
if c.Headers != nil {
cHeaders := c.Headers
// gobwas/ws send "Host" directly in Upgrade() by `httpWriteHeader(bw, headerHost, u.Host)`
// if headers has "Host" will send repeatedly
if host := cHeaders.Get("Host"); host != "" {
cHeaders.Del("Host")
uri.Host = host
}
for k := range cHeaders {
headers.Add(k, cHeaders.Get(k))
for k := range c.Headers {
headers.Add(k, c.Headers.Get(k))
}
}
@ -372,19 +366,26 @@ func streamWebsocketConn(ctx context.Context, conn net.Conn, c *WebsocketConfig,
if c.EarlyDataHeaderName == "" {
uri.Path += earlyDataString
} else {
// gobwas/ws will check server's response "Sec-Websocket-Protocol" so must add Protocols to ws.Dialer
// if not will cause ws.ErrHandshakeBadSubProtocol
if c.EarlyDataHeaderName == "Sec-WebSocket-Protocol" {
// gobwas/ws will set "Sec-Websocket-Protocol" according dialer.Protocols
// to avoid send repeatedly don't set it to headers
dialer.Protocols = []string{earlyDataString}
} else {
headers.Set(c.EarlyDataHeaderName, earlyDataString)
}
headers.Set(c.EarlyDataHeaderName, earlyDataString)
}
}
// gobwas/ws will check server's response "Sec-Websocket-Protocol" so must add Protocols to ws.Dialer
// if not will cause ws.ErrHandshakeBadSubProtocol
if secProtocol := headers.Get("Sec-WebSocket-Protocol"); len(secProtocol) > 0 {
// gobwas/ws will set "Sec-Websocket-Protocol" according dialer.Protocols
// to avoid send repeatedly don't set it to headers
headers.Del("Sec-WebSocket-Protocol")
dialer.Protocols = []string{secProtocol}
}
// gobwas/ws send "Host" directly in Upgrade() by `httpWriteHeader(bw, headerHost, u.Host)`
// if headers has "Host" will send repeatedly
if host := headers.Get("Host"); host != "" {
headers.Del("Host")
uri.Host = host
}
dialer.Header = ws.HandshakeHeaderHTTP(headers)
conn, reader, _, err := dialer.Dial(ctx, uri.String())
@ -447,26 +448,23 @@ func decodeEd(s string) ([]byte, error) {
return base64.RawURLEncoding.DecodeString(replacer.Replace(s))
}
func decodeXray0rtt(requestHeader http.Header) ([]byte, http.Header) {
var edBuf []byte
responseHeader := http.Header{}
func decodeXray0rtt(requestHeader http.Header) []byte {
// read inHeader's `Sec-WebSocket-Protocol` for Xray's 0rtt ws
if secProtocol := requestHeader.Get("Sec-WebSocket-Protocol"); len(secProtocol) > 0 {
if buf, err := decodeEd(secProtocol); err == nil { // sure could base64 decode
edBuf = buf
if edBuf, err := decodeEd(secProtocol); err == nil { // sure could base64 decode
return edBuf
}
}
return edBuf, responseHeader
return nil
}
func StreamUpgradedWebsocketConn(w http.ResponseWriter, r *http.Request) (net.Conn, error) {
edBuf, responseHeader := decodeXray0rtt(r.Header)
wsConn, rw, _, err := ws.HTTPUpgrader{Header: responseHeader}.Upgrade(r, w)
wsConn, rw, _, err := ws.UpgradeHTTP(r, w)
if err != nil {
return nil, err
}
conn := newWebsocketConn(wsConn, rw.Reader, ws.StateServerSide)
if len(edBuf) > 0 {
if edBuf := decodeXray0rtt(r.Header); len(edBuf) > 0 {
return N.NewDeadlineConn(&websocketWithReaderConn{conn, io.MultiReader(bytes.NewReader(edBuf), conn)}), nil
}
return N.NewDeadlineConn(conn), nil