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authorChristopher Speller <crspeller@gmail.com>2016-05-12 15:08:58 -0400
committerChristopher Speller <crspeller@gmail.com>2016-05-12 16:37:29 -0400
commit84d2482ddbff9564c9ad75b2d30af66e3ddfd44d (patch)
tree8bfa567d2b6381f4a996ada2deff8a16aa85a3ac /Godeps/_workspace/src/github.com/gorilla/websocket/server.go
parentd1efb66ad7b017f0fbfe6f0c20843b30f396e504 (diff)
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Updating go depencancies. Switching to go1.6 vendoring (#2949)
Diffstat (limited to 'Godeps/_workspace/src/github.com/gorilla/websocket/server.go')
-rw-r--r--Godeps/_workspace/src/github.com/gorilla/websocket/server.go250
1 files changed, 0 insertions, 250 deletions
diff --git a/Godeps/_workspace/src/github.com/gorilla/websocket/server.go b/Godeps/_workspace/src/github.com/gorilla/websocket/server.go
deleted file mode 100644
index 3a9805f02..000000000
--- a/Godeps/_workspace/src/github.com/gorilla/websocket/server.go
+++ /dev/null
@@ -1,250 +0,0 @@
-// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package websocket
-
-import (
- "bufio"
- "errors"
- "net"
- "net/http"
- "net/url"
- "strings"
- "time"
-)
-
-// HandshakeError describes an error with the handshake from the peer.
-type HandshakeError struct {
- message string
-}
-
-func (e HandshakeError) Error() string { return e.message }
-
-// Upgrader specifies parameters for upgrading an HTTP connection to a
-// WebSocket connection.
-type Upgrader struct {
- // HandshakeTimeout specifies the duration for the handshake to complete.
- HandshakeTimeout time.Duration
-
- // ReadBufferSize and WriteBufferSize specify I/O buffer sizes. If a buffer
- // size is zero, then a default value of 4096 is used. The I/O buffer sizes
- // do not limit the size of the messages that can be sent or received.
- ReadBufferSize, WriteBufferSize int
-
- // Subprotocols specifies the server's supported protocols in order of
- // preference. If this field is set, then the Upgrade method negotiates a
- // subprotocol by selecting the first match in this list with a protocol
- // requested by the client.
- Subprotocols []string
-
- // Error specifies the function for generating HTTP error responses. If Error
- // is nil, then http.Error is used to generate the HTTP response.
- Error func(w http.ResponseWriter, r *http.Request, status int, reason error)
-
- // CheckOrigin returns true if the request Origin header is acceptable. If
- // CheckOrigin is nil, the host in the Origin header must not be set or
- // must match the host of the request.
- CheckOrigin func(r *http.Request) bool
-}
-
-func (u *Upgrader) returnError(w http.ResponseWriter, r *http.Request, status int, reason string) (*Conn, error) {
- err := HandshakeError{reason}
- if u.Error != nil {
- u.Error(w, r, status, err)
- } else {
- http.Error(w, http.StatusText(status), status)
- }
- return nil, err
-}
-
-// checkSameOrigin returns true if the origin is not set or is equal to the request host.
-func checkSameOrigin(r *http.Request) bool {
- origin := r.Header["Origin"]
- if len(origin) == 0 {
- return true
- }
- u, err := url.Parse(origin[0])
- if err != nil {
- return false
- }
- return u.Host == r.Host
-}
-
-func (u *Upgrader) selectSubprotocol(r *http.Request, responseHeader http.Header) string {
- if u.Subprotocols != nil {
- clientProtocols := Subprotocols(r)
- for _, serverProtocol := range u.Subprotocols {
- for _, clientProtocol := range clientProtocols {
- if clientProtocol == serverProtocol {
- return clientProtocol
- }
- }
- }
- } else if responseHeader != nil {
- return responseHeader.Get("Sec-Websocket-Protocol")
- }
- return ""
-}
-
-// Upgrade upgrades the HTTP server connection to the WebSocket protocol.
-//
-// The responseHeader is included in the response to the client's upgrade
-// request. Use the responseHeader to specify cookies (Set-Cookie) and the
-// application negotiated subprotocol (Sec-Websocket-Protocol).
-func (u *Upgrader) Upgrade(w http.ResponseWriter, r *http.Request, responseHeader http.Header) (*Conn, error) {
- if r.Method != "GET" {
- return u.returnError(w, r, http.StatusMethodNotAllowed, "websocket: method not GET")
- }
- if values := r.Header["Sec-Websocket-Version"]; len(values) == 0 || values[0] != "13" {
- return u.returnError(w, r, http.StatusBadRequest, "websocket: version != 13")
- }
-
- if !tokenListContainsValue(r.Header, "Connection", "upgrade") {
- return u.returnError(w, r, http.StatusBadRequest, "websocket: could not find connection header with token 'upgrade'")
- }
-
- if !tokenListContainsValue(r.Header, "Upgrade", "websocket") {
- return u.returnError(w, r, http.StatusBadRequest, "websocket: could not find upgrade header with token 'websocket'")
- }
-
- checkOrigin := u.CheckOrigin
- if checkOrigin == nil {
- checkOrigin = checkSameOrigin
- }
- if !checkOrigin(r) {
- return u.returnError(w, r, http.StatusForbidden, "websocket: origin not allowed")
- }
-
- challengeKey := r.Header.Get("Sec-Websocket-Key")
- if challengeKey == "" {
- return u.returnError(w, r, http.StatusBadRequest, "websocket: key missing or blank")
- }
-
- subprotocol := u.selectSubprotocol(r, responseHeader)
-
- var (
- netConn net.Conn
- br *bufio.Reader
- err error
- )
-
- h, ok := w.(http.Hijacker)
- if !ok {
- return u.returnError(w, r, http.StatusInternalServerError, "websocket: response does not implement http.Hijacker")
- }
- var rw *bufio.ReadWriter
- netConn, rw, err = h.Hijack()
- if err != nil {
- return u.returnError(w, r, http.StatusInternalServerError, err.Error())
- }
- br = rw.Reader
-
- if br.Buffered() > 0 {
- netConn.Close()
- return nil, errors.New("websocket: client sent data before handshake is complete")
- }
-
- c := newConn(netConn, true, u.ReadBufferSize, u.WriteBufferSize)
- c.subprotocol = subprotocol
-
- p := c.writeBuf[:0]
- p = append(p, "HTTP/1.1 101 Switching Protocols\r\nUpgrade: websocket\r\nConnection: Upgrade\r\nSec-WebSocket-Accept: "...)
- p = append(p, computeAcceptKey(challengeKey)...)
- p = append(p, "\r\n"...)
- if c.subprotocol != "" {
- p = append(p, "Sec-Websocket-Protocol: "...)
- p = append(p, c.subprotocol...)
- p = append(p, "\r\n"...)
- }
- for k, vs := range responseHeader {
- if k == "Sec-Websocket-Protocol" {
- continue
- }
- for _, v := range vs {
- p = append(p, k...)
- p = append(p, ": "...)
- for i := 0; i < len(v); i++ {
- b := v[i]
- if b <= 31 {
- // prevent response splitting.
- b = ' '
- }
- p = append(p, b)
- }
- p = append(p, "\r\n"...)
- }
- }
- p = append(p, "\r\n"...)
-
- // Clear deadlines set by HTTP server.
- netConn.SetDeadline(time.Time{})
-
- if u.HandshakeTimeout > 0 {
- netConn.SetWriteDeadline(time.Now().Add(u.HandshakeTimeout))
- }
- if _, err = netConn.Write(p); err != nil {
- netConn.Close()
- return nil, err
- }
- if u.HandshakeTimeout > 0 {
- netConn.SetWriteDeadline(time.Time{})
- }
-
- return c, nil
-}
-
-// Upgrade upgrades the HTTP server connection to the WebSocket protocol.
-//
-// This function is deprecated, use websocket.Upgrader instead.
-//
-// The application is responsible for checking the request origin before
-// calling Upgrade. An example implementation of the same origin policy is:
-//
-// if req.Header.Get("Origin") != "http://"+req.Host {
-// http.Error(w, "Origin not allowed", 403)
-// return
-// }
-//
-// If the endpoint supports subprotocols, then the application is responsible
-// for negotiating the protocol used on the connection. Use the Subprotocols()
-// function to get the subprotocols requested by the client. Use the
-// Sec-Websocket-Protocol response header to specify the subprotocol selected
-// by the application.
-//
-// The responseHeader is included in the response to the client's upgrade
-// request. Use the responseHeader to specify cookies (Set-Cookie) and the
-// negotiated subprotocol (Sec-Websocket-Protocol).
-//
-// The connection buffers IO to the underlying network connection. The
-// readBufSize and writeBufSize parameters specify the size of the buffers to
-// use. Messages can be larger than the buffers.
-//
-// If the request is not a valid WebSocket handshake, then Upgrade returns an
-// error of type HandshakeError. Applications should handle this error by
-// replying to the client with an HTTP error response.
-func Upgrade(w http.ResponseWriter, r *http.Request, responseHeader http.Header, readBufSize, writeBufSize int) (*Conn, error) {
- u := Upgrader{ReadBufferSize: readBufSize, WriteBufferSize: writeBufSize}
- u.Error = func(w http.ResponseWriter, r *http.Request, status int, reason error) {
- // don't return errors to maintain backwards compatibility
- }
- u.CheckOrigin = func(r *http.Request) bool {
- // allow all connections by default
- return true
- }
- return u.Upgrade(w, r, responseHeader)
-}
-
-// Subprotocols returns the subprotocols requested by the client in the
-// Sec-Websocket-Protocol header.
-func Subprotocols(r *http.Request) []string {
- h := strings.TrimSpace(r.Header.Get("Sec-Websocket-Protocol"))
- if h == "" {
- return nil
- }
- protocols := strings.Split(h, ",")
- for i := range protocols {
- protocols[i] = strings.TrimSpace(protocols[i])
- }
- return protocols
-}