Handle Te header when http2
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parent
f586950528
commit
56488d435f
15 changed files with 306 additions and 134 deletions
97
vendor/github.com/gorilla/websocket/server.go
generated
vendored
97
vendor/github.com/gorilla/websocket/server.go
generated
vendored
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@ -7,7 +7,7 @@ package websocket
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import (
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"bufio"
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"errors"
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"net"
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"io"
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"net/http"
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"net/url"
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"strings"
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@ -33,10 +33,23 @@ type Upgrader struct {
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// or received.
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ReadBufferSize, WriteBufferSize int
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// WriteBufferPool is a pool of buffers for write operations. If the value
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// is not set, then write buffers are allocated to the connection for the
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// lifetime of the connection.
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//
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// A pool is most useful when the application has a modest volume of writes
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// across a large number of connections.
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//
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// Applications should use a single pool for each unique value of
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// WriteBufferSize.
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WriteBufferPool BufferPool
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// Subprotocols specifies the server's supported protocols in order of
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// preference. If this field is set, then the Upgrade method negotiates a
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// preference. If this field is not nil, then the Upgrade method negotiates a
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// subprotocol by selecting the first match in this list with a protocol
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// requested by the client.
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// requested by the client. If there's no match, then no protocol is
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// negotiated (the Sec-Websocket-Protocol header is not included in the
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// handshake response).
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Subprotocols []string
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// Error specifies the function for generating HTTP error responses. If Error
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@ -103,7 +116,7 @@ func (u *Upgrader) selectSubprotocol(r *http.Request, responseHeader http.Header
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//
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// The responseHeader is included in the response to the client's upgrade
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// request. Use the responseHeader to specify cookies (Set-Cookie) and the
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// application negotiated subprotocol (Sec-Websocket-Protocol).
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// application negotiated subprotocol (Sec-WebSocket-Protocol).
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//
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// If the upgrade fails, then Upgrade replies to the client with an HTTP error
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// response.
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@ -127,7 +140,7 @@ func (u *Upgrader) Upgrade(w http.ResponseWriter, r *http.Request, responseHeade
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}
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if _, ok := responseHeader["Sec-Websocket-Extensions"]; ok {
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return u.returnError(w, r, http.StatusInternalServerError, "websocket: application specific 'Sec-Websocket-Extensions' headers are unsupported")
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return u.returnError(w, r, http.StatusInternalServerError, "websocket: application specific 'Sec-WebSocket-Extensions' headers are unsupported")
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}
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checkOrigin := u.CheckOrigin
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@ -140,7 +153,7 @@ func (u *Upgrader) Upgrade(w http.ResponseWriter, r *http.Request, responseHeade
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challengeKey := r.Header.Get("Sec-Websocket-Key")
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if challengeKey == "" {
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return u.returnError(w, r, http.StatusBadRequest, "websocket: not a websocket handshake: `Sec-Websocket-Key' header is missing or blank")
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return u.returnError(w, r, http.StatusBadRequest, "websocket: not a websocket handshake: `Sec-WebSocket-Key' header is missing or blank")
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}
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subprotocol := u.selectSubprotocol(r, responseHeader)
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@ -157,17 +170,12 @@ func (u *Upgrader) Upgrade(w http.ResponseWriter, r *http.Request, responseHeade
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}
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}
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var (
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netConn net.Conn
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err error
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)
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h, ok := w.(http.Hijacker)
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if !ok {
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return u.returnError(w, r, http.StatusInternalServerError, "websocket: response does not implement http.Hijacker")
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}
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var brw *bufio.ReadWriter
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netConn, brw, err = h.Hijack()
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netConn, brw, err := h.Hijack()
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if err != nil {
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return u.returnError(w, r, http.StatusInternalServerError, err.Error())
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}
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@ -177,7 +185,21 @@ func (u *Upgrader) Upgrade(w http.ResponseWriter, r *http.Request, responseHeade
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return nil, errors.New("websocket: client sent data before handshake is complete")
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}
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c := newConnBRW(netConn, true, u.ReadBufferSize, u.WriteBufferSize, brw)
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var br *bufio.Reader
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if u.ReadBufferSize == 0 && bufioReaderSize(netConn, brw.Reader) > 256 {
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// Reuse hijacked buffered reader as connection reader.
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br = brw.Reader
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}
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buf := bufioWriterBuffer(netConn, brw.Writer)
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var writeBuf []byte
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if u.WriteBufferPool == nil && u.WriteBufferSize == 0 && len(buf) >= maxFrameHeaderSize+256 {
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// Reuse hijacked write buffer as connection buffer.
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writeBuf = buf
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}
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c := newConn(netConn, true, u.ReadBufferSize, u.WriteBufferSize, u.WriteBufferPool, br, writeBuf)
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c.subprotocol = subprotocol
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if compress {
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@ -185,17 +207,23 @@ func (u *Upgrader) Upgrade(w http.ResponseWriter, r *http.Request, responseHeade
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c.newDecompressionReader = decompressNoContextTakeover
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}
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p := c.writeBuf[:0]
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// Use larger of hijacked buffer and connection write buffer for header.
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p := buf
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if len(c.writeBuf) > len(p) {
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p = c.writeBuf
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}
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p = p[:0]
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p = append(p, "HTTP/1.1 101 Switching Protocols\r\nUpgrade: websocket\r\nConnection: Upgrade\r\nSec-WebSocket-Accept: "...)
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p = append(p, computeAcceptKey(challengeKey)...)
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p = append(p, "\r\n"...)
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if c.subprotocol != "" {
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p = append(p, "Sec-Websocket-Protocol: "...)
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p = append(p, "Sec-WebSocket-Protocol: "...)
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p = append(p, c.subprotocol...)
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p = append(p, "\r\n"...)
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}
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if compress {
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p = append(p, "Sec-Websocket-Extensions: permessage-deflate; server_no_context_takeover; client_no_context_takeover\r\n"...)
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p = append(p, "Sec-WebSocket-Extensions: permessage-deflate; server_no_context_takeover; client_no_context_takeover\r\n"...)
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}
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for k, vs := range responseHeader {
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if k == "Sec-Websocket-Protocol" {
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@ -296,3 +324,40 @@ func IsWebSocketUpgrade(r *http.Request) bool {
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return tokenListContainsValue(r.Header, "Connection", "upgrade") &&
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tokenListContainsValue(r.Header, "Upgrade", "websocket")
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}
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// bufioReaderSize size returns the size of a bufio.Reader.
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func bufioReaderSize(originalReader io.Reader, br *bufio.Reader) int {
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// This code assumes that peek on a reset reader returns
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// bufio.Reader.buf[:0].
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// TODO: Use bufio.Reader.Size() after Go 1.10
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br.Reset(originalReader)
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if p, err := br.Peek(0); err == nil {
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return cap(p)
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}
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return 0
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}
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// writeHook is an io.Writer that records the last slice passed to it vio
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// io.Writer.Write.
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type writeHook struct {
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p []byte
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}
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func (wh *writeHook) Write(p []byte) (int, error) {
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wh.p = p
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return len(p), nil
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}
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// bufioWriterBuffer grabs the buffer from a bufio.Writer.
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func bufioWriterBuffer(originalWriter io.Writer, bw *bufio.Writer) []byte {
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// This code assumes that bufio.Writer.buf[:1] is passed to the
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// bufio.Writer's underlying writer.
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var wh writeHook
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bw.Reset(&wh)
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bw.WriteByte(0)
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bw.Flush()
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bw.Reset(originalWriter)
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return wh.p[:cap(wh.p)]
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}
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