--- /dev/null
+// 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.
+
+// Command server is a test server for the Autobahn WebSockets Test Suite.
+package main
+
+import (
+ "errors"
+ "flag"
+ "io"
+ "log"
+ "net/http"
+ "time"
+ "unicode/utf8"
+
+ "github.com/gorilla/websocket"
+)
+
+var upgrader = websocket.Upgrader{
+ ReadBufferSize: 4096,
+ WriteBufferSize: 4096,
+ EnableCompression: true,
+ CheckOrigin: func(r *http.Request) bool {
+ return true
+ },
+}
+
+// echoCopy echoes messages from the client using io.Copy.
+func echoCopy(w http.ResponseWriter, r *http.Request, writerOnly bool) {
+ conn, err := upgrader.Upgrade(w, r, nil)
+ if err != nil {
+ log.Println("Upgrade:", err)
+ return
+ }
+ defer conn.Close()
+ for {
+ mt, r, err := conn.NextReader()
+ if err != nil {
+ if err != io.EOF {
+ log.Println("NextReader:", err)
+ }
+ return
+ }
+ if mt == websocket.TextMessage {
+ r = &validator{r: r}
+ }
+ w, err := conn.NextWriter(mt)
+ if err != nil {
+ log.Println("NextWriter:", err)
+ return
+ }
+ if mt == websocket.TextMessage {
+ r = &validator{r: r}
+ }
+ if writerOnly {
+ _, err = io.Copy(struct{ io.Writer }{w}, r)
+ } else {
+ _, err = io.Copy(w, r)
+ }
+ if err != nil {
+ if err == errInvalidUTF8 {
+ conn.WriteControl(websocket.CloseMessage,
+ websocket.FormatCloseMessage(websocket.CloseInvalidFramePayloadData, ""),
+ time.Time{})
+ }
+ log.Println("Copy:", err)
+ return
+ }
+ err = w.Close()
+ if err != nil {
+ log.Println("Close:", err)
+ return
+ }
+ }
+}
+
+func echoCopyWriterOnly(w http.ResponseWriter, r *http.Request) {
+ echoCopy(w, r, true)
+}
+
+func echoCopyFull(w http.ResponseWriter, r *http.Request) {
+ echoCopy(w, r, false)
+}
+
+// echoReadAll echoes messages from the client by reading the entire message
+// with ioutil.ReadAll.
+func echoReadAll(w http.ResponseWriter, r *http.Request, writeMessage, writePrepared bool) {
+ conn, err := upgrader.Upgrade(w, r, nil)
+ if err != nil {
+ log.Println("Upgrade:", err)
+ return
+ }
+ defer conn.Close()
+ for {
+ mt, b, err := conn.ReadMessage()
+ if err != nil {
+ if err != io.EOF {
+ log.Println("NextReader:", err)
+ }
+ return
+ }
+ if mt == websocket.TextMessage {
+ if !utf8.Valid(b) {
+ conn.WriteControl(websocket.CloseMessage,
+ websocket.FormatCloseMessage(websocket.CloseInvalidFramePayloadData, ""),
+ time.Time{})
+ log.Println("ReadAll: invalid utf8")
+ }
+ }
+ if writeMessage {
+ if !writePrepared {
+ err = conn.WriteMessage(mt, b)
+ if err != nil {
+ log.Println("WriteMessage:", err)
+ }
+ } else {
+ pm, err := websocket.NewPreparedMessage(mt, b)
+ if err != nil {
+ log.Println("NewPreparedMessage:", err)
+ return
+ }
+ err = conn.WritePreparedMessage(pm)
+ if err != nil {
+ log.Println("WritePreparedMessage:", err)
+ }
+ }
+ } else {
+ w, err := conn.NextWriter(mt)
+ if err != nil {
+ log.Println("NextWriter:", err)
+ return
+ }
+ if _, err := w.Write(b); err != nil {
+ log.Println("Writer:", err)
+ return
+ }
+ if err := w.Close(); err != nil {
+ log.Println("Close:", err)
+ return
+ }
+ }
+ }
+}
+
+func echoReadAllWriter(w http.ResponseWriter, r *http.Request) {
+ echoReadAll(w, r, false, false)
+}
+
+func echoReadAllWriteMessage(w http.ResponseWriter, r *http.Request) {
+ echoReadAll(w, r, true, false)
+}
+
+func echoReadAllWritePreparedMessage(w http.ResponseWriter, r *http.Request) {
+ echoReadAll(w, r, true, true)
+}
+
+func serveHome(w http.ResponseWriter, r *http.Request) {
+ if r.URL.Path != "/" {
+ http.Error(w, "Not found.", http.StatusNotFound)
+ return
+ }
+ if r.Method != "GET" {
+ http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
+ return
+ }
+ w.Header().Set("Content-Type", "text/html; charset=utf-8")
+ io.WriteString(w, "<html><body>Echo Server</body></html>")
+}
+
+var addr = flag.String("addr", ":9000", "http service address")
+
+func main() {
+ flag.Parse()
+ http.HandleFunc("/", serveHome)
+ http.HandleFunc("/c", echoCopyWriterOnly)
+ http.HandleFunc("/f", echoCopyFull)
+ http.HandleFunc("/r", echoReadAllWriter)
+ http.HandleFunc("/m", echoReadAllWriteMessage)
+ http.HandleFunc("/p", echoReadAllWritePreparedMessage)
+ err := http.ListenAndServe(*addr, nil)
+ if err != nil {
+ log.Fatal("ListenAndServe: ", err)
+ }
+}
+
+type validator struct {
+ state int
+ x rune
+ r io.Reader
+}
+
+var errInvalidUTF8 = errors.New("invalid utf8")
+
+func (r *validator) Read(p []byte) (int, error) {
+ n, err := r.r.Read(p)
+ state := r.state
+ x := r.x
+ for _, b := range p[:n] {
+ state, x = decode(state, x, b)
+ if state == utf8Reject {
+ break
+ }
+ }
+ r.state = state
+ r.x = x
+ if state == utf8Reject || (err == io.EOF && state != utf8Accept) {
+ return n, errInvalidUTF8
+ }
+ return n, err
+}
+
+// UTF-8 decoder from http://bjoern.hoehrmann.de/utf-8/decoder/dfa/
+//
+// Copyright (c) 2008-2009 Bjoern Hoehrmann <bjoern@hoehrmann.de>
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+var utf8d = [...]byte{
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 00..1f
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 20..3f
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 40..5f
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 60..7f
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, // 80..9f
+ 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, // a0..bf
+ 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, // c0..df
+ 0xa, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x4, 0x3, 0x3, // e0..ef
+ 0xb, 0x6, 0x6, 0x6, 0x5, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, // f0..ff
+ 0x0, 0x1, 0x2, 0x3, 0x5, 0x8, 0x7, 0x1, 0x1, 0x1, 0x4, 0x6, 0x1, 0x1, 0x1, 0x1, // s0..s0
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, // s1..s2
+ 1, 2, 1, 1, 1, 1, 1, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, // s3..s4
+ 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 3, 1, 1, 1, 1, 1, 1, // s5..s6
+ 1, 3, 1, 1, 1, 1, 1, 3, 1, 3, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // s7..s8
+}
+
+const (
+ utf8Accept = 0
+ utf8Reject = 1
+)
+
+func decode(state int, x rune, b byte) (int, rune) {
+ t := utf8d[b]
+ if state != utf8Accept {
+ x = rune(b&0x3f) | (x << 6)
+ } else {
+ x = rune((0xff >> t) & b)
+ }
+ state = int(utf8d[256+state*16+int(t)])
+ return state, x
+}
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