summaryrefslogtreecommitdiffstats
path: root/vendor/github.com/gorilla/websocket/examples/filewatch
diff options
context:
space:
mode:
authorWim <wim@42.be>2018-08-06 21:47:05 +0200
committerWim <wim@42.be>2018-08-06 21:47:05 +0200
commit51062863a5c34d81e296cf15c61140911037cf3b (patch)
tree9b5e044672486326c7a0ca8fb26430f37bf4d83c /vendor/github.com/gorilla/websocket/examples/filewatch
parent4fb4b7aa6c02a54db8ad8dd98e4d321396926c0d (diff)
downloadmatterbridge-msglm-51062863a5c34d81e296cf15c61140911037cf3b.tar.gz
matterbridge-msglm-51062863a5c34d81e296cf15c61140911037cf3b.tar.bz2
matterbridge-msglm-51062863a5c34d81e296cf15c61140911037cf3b.zip
Use mod vendor for vendored directory (backwards compatible)
Diffstat (limited to 'vendor/github.com/gorilla/websocket/examples/filewatch')
-rw-r--r--vendor/github.com/gorilla/websocket/examples/filewatch/main.go193
1 files changed, 0 insertions, 193 deletions
diff --git a/vendor/github.com/gorilla/websocket/examples/filewatch/main.go b/vendor/github.com/gorilla/websocket/examples/filewatch/main.go
deleted file mode 100644
index f5f9da5c..00000000
--- a/vendor/github.com/gorilla/websocket/examples/filewatch/main.go
+++ /dev/null
@@ -1,193 +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 main
-
-import (
- "flag"
- "html/template"
- "io/ioutil"
- "log"
- "net/http"
- "os"
- "strconv"
- "time"
-
- "github.com/gorilla/websocket"
-)
-
-const (
- // Time allowed to write the file to the client.
- writeWait = 10 * time.Second
-
- // Time allowed to read the next pong message from the client.
- pongWait = 60 * time.Second
-
- // Send pings to client with this period. Must be less than pongWait.
- pingPeriod = (pongWait * 9) / 10
-
- // Poll file for changes with this period.
- filePeriod = 10 * time.Second
-)
-
-var (
- addr = flag.String("addr", ":8080", "http service address")
- homeTempl = template.Must(template.New("").Parse(homeHTML))
- filename string
- upgrader = websocket.Upgrader{
- ReadBufferSize: 1024,
- WriteBufferSize: 1024,
- }
-)
-
-func readFileIfModified(lastMod time.Time) ([]byte, time.Time, error) {
- fi, err := os.Stat(filename)
- if err != nil {
- return nil, lastMod, err
- }
- if !fi.ModTime().After(lastMod) {
- return nil, lastMod, nil
- }
- p, err := ioutil.ReadFile(filename)
- if err != nil {
- return nil, fi.ModTime(), err
- }
- return p, fi.ModTime(), nil
-}
-
-func reader(ws *websocket.Conn) {
- defer ws.Close()
- ws.SetReadLimit(512)
- ws.SetReadDeadline(time.Now().Add(pongWait))
- ws.SetPongHandler(func(string) error { ws.SetReadDeadline(time.Now().Add(pongWait)); return nil })
- for {
- _, _, err := ws.ReadMessage()
- if err != nil {
- break
- }
- }
-}
-
-func writer(ws *websocket.Conn, lastMod time.Time) {
- lastError := ""
- pingTicker := time.NewTicker(pingPeriod)
- fileTicker := time.NewTicker(filePeriod)
- defer func() {
- pingTicker.Stop()
- fileTicker.Stop()
- ws.Close()
- }()
- for {
- select {
- case <-fileTicker.C:
- var p []byte
- var err error
-
- p, lastMod, err = readFileIfModified(lastMod)
-
- if err != nil {
- if s := err.Error(); s != lastError {
- lastError = s
- p = []byte(lastError)
- }
- } else {
- lastError = ""
- }
-
- if p != nil {
- ws.SetWriteDeadline(time.Now().Add(writeWait))
- if err := ws.WriteMessage(websocket.TextMessage, p); err != nil {
- return
- }
- }
- case <-pingTicker.C:
- ws.SetWriteDeadline(time.Now().Add(writeWait))
- if err := ws.WriteMessage(websocket.PingMessage, []byte{}); err != nil {
- return
- }
- }
- }
-}
-
-func serveWs(w http.ResponseWriter, r *http.Request) {
- ws, err := upgrader.Upgrade(w, r, nil)
- if err != nil {
- if _, ok := err.(websocket.HandshakeError); !ok {
- log.Println(err)
- }
- return
- }
-
- var lastMod time.Time
- if n, err := strconv.ParseInt(r.FormValue("lastMod"), 16, 64); err == nil {
- lastMod = time.Unix(0, n)
- }
-
- go writer(ws, lastMod)
- reader(ws)
-}
-
-func serveHome(w http.ResponseWriter, r *http.Request) {
- if r.URL.Path != "/" {
- http.Error(w, "Not found", 404)
- return
- }
- if r.Method != "GET" {
- http.Error(w, "Method not allowed", 405)
- return
- }
- w.Header().Set("Content-Type", "text/html; charset=utf-8")
- p, lastMod, err := readFileIfModified(time.Time{})
- if err != nil {
- p = []byte(err.Error())
- lastMod = time.Unix(0, 0)
- }
- var v = struct {
- Host string
- Data string
- LastMod string
- }{
- r.Host,
- string(p),
- strconv.FormatInt(lastMod.UnixNano(), 16),
- }
- homeTempl.Execute(w, &v)
-}
-
-func main() {
- flag.Parse()
- if flag.NArg() != 1 {
- log.Fatal("filename not specified")
- }
- filename = flag.Args()[0]
- http.HandleFunc("/", serveHome)
- http.HandleFunc("/ws", serveWs)
- if err := http.ListenAndServe(*addr, nil); err != nil {
- log.Fatal(err)
- }
-}
-
-const homeHTML = `<!DOCTYPE html>
-<html lang="en">
- <head>
- <title>WebSocket Example</title>
- </head>
- <body>
- <pre id="fileData">{{.Data}}</pre>
- <script type="text/javascript">
- (function() {
- var data = document.getElementById("fileData");
- var conn = new WebSocket("ws://{{.Host}}/ws?lastMod={{.LastMod}}");
- conn.onclose = function(evt) {
- data.textContent = 'Connection closed';
- }
- conn.onmessage = function(evt) {
- console.log('file updated');
- data.textContent = evt.data;
- }
- })();
- </script>
- </body>
-</html>
-`