You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
146 lines
3.1 KiB
Go
146 lines
3.1 KiB
Go
4 years ago
|
package addon
|
||
|
|
|
||
|
|
import (
|
||
|
|
"net/http"
|
||
|
|
"text/template"
|
||
|
|
|
||
|
|
"github.com/gorilla/websocket"
|
||
|
|
"github.com/sirupsen/logrus"
|
||
|
|
)
|
||
|
|
|
||
|
|
func (web *WebAddon) echo(w http.ResponseWriter, r *http.Request) {
|
||
|
|
c, err := web.upgrader.Upgrade(w, r, nil)
|
||
|
|
if err != nil {
|
||
|
|
web.log.Print("upgrade:", err)
|
||
|
|
return
|
||
|
|
}
|
||
|
|
defer c.Close()
|
||
|
|
for {
|
||
|
|
mt, message, err := c.ReadMessage()
|
||
|
|
if err != nil {
|
||
|
|
web.log.Println("read:", err)
|
||
|
|
break
|
||
|
|
}
|
||
|
|
web.log.Printf("recv: %s", message)
|
||
|
|
err = c.WriteMessage(mt, message)
|
||
|
|
if err != nil {
|
||
|
|
web.log.Println("write:", err)
|
||
|
|
break
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func home(w http.ResponseWriter, r *http.Request) {
|
||
|
|
homeTemplate.Execute(w, "ws://"+r.Host+"/echo")
|
||
|
|
}
|
||
|
|
|
||
|
|
type WebAddon struct {
|
||
|
|
Base
|
||
|
|
addr string
|
||
|
|
upgrader *websocket.Upgrader
|
||
|
|
serverMux *http.ServeMux
|
||
|
|
server *http.Server
|
||
|
|
log *logrus.Entry
|
||
|
|
}
|
||
|
|
|
||
|
|
func NewWebAddon() *WebAddon {
|
||
|
|
web := new(WebAddon)
|
||
|
|
web.addr = ":9081"
|
||
|
|
web.upgrader = &websocket.Upgrader{}
|
||
|
|
|
||
|
|
web.serverMux = new(http.ServeMux)
|
||
|
|
web.serverMux.HandleFunc("/echo", web.echo)
|
||
|
|
web.serverMux.HandleFunc("/", home)
|
||
|
|
|
||
|
|
web.server = &http.Server{Addr: web.addr, Handler: web.serverMux}
|
||
|
|
|
||
|
|
web.log = log.WithField("in", "WebAddon")
|
||
|
|
|
||
|
|
go func() {
|
||
|
|
web.log.Infof("server start listen at %v\n", web.addr)
|
||
|
|
err := web.server.ListenAndServe()
|
||
|
|
web.log.Error(err)
|
||
|
|
}()
|
||
|
|
|
||
|
|
return web
|
||
|
|
}
|
||
|
|
|
||
|
|
var homeTemplate = template.Must(template.New("").Parse(`
|
||
|
|
<!DOCTYPE html>
|
||
|
|
<html>
|
||
|
|
<head>
|
||
|
|
<meta charset="utf-8">
|
||
|
|
<script>
|
||
|
|
window.addEventListener("load", function(evt) {
|
||
|
|
|
||
|
|
var output = document.getElementById("output");
|
||
|
|
var input = document.getElementById("input");
|
||
|
|
var ws;
|
||
|
|
|
||
|
|
var print = function(message) {
|
||
|
|
var d = document.createElement("div");
|
||
|
|
d.textContent = message;
|
||
|
|
output.appendChild(d);
|
||
|
|
};
|
||
|
|
|
||
|
|
document.getElementById("open").onclick = function(evt) {
|
||
|
|
if (ws) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
ws = new WebSocket("{{.}}");
|
||
|
|
ws.onopen = function(evt) {
|
||
|
|
print("OPEN");
|
||
|
|
}
|
||
|
|
ws.onclose = function(evt) {
|
||
|
|
print("CLOSE");
|
||
|
|
ws = null;
|
||
|
|
}
|
||
|
|
ws.onmessage = function(evt) {
|
||
|
|
print("RESPONSE: " + evt.data);
|
||
|
|
}
|
||
|
|
ws.onerror = function(evt) {
|
||
|
|
print("ERROR: " + evt.data);
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
};
|
||
|
|
|
||
|
|
document.getElementById("send").onclick = function(evt) {
|
||
|
|
if (!ws) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
print("SEND: " + input.value);
|
||
|
|
ws.send(input.value);
|
||
|
|
return false;
|
||
|
|
};
|
||
|
|
|
||
|
|
document.getElementById("close").onclick = function(evt) {
|
||
|
|
if (!ws) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
ws.close();
|
||
|
|
return false;
|
||
|
|
};
|
||
|
|
|
||
|
|
});
|
||
|
|
</script>
|
||
|
|
</head>
|
||
|
|
<body>
|
||
|
|
<table>
|
||
|
|
<tr><td valign="top" width="50%">
|
||
|
|
<p>Click "Open" to create a connection to the server,
|
||
|
|
"Send" to send a message to the server and "Close" to close the connection.
|
||
|
|
You can change the message and send multiple times.
|
||
|
|
<p>
|
||
|
|
<form>
|
||
|
|
<button id="open">Open</button>
|
||
|
|
<button id="close">Close</button>
|
||
|
|
<p><input id="input" type="text" value="Hello world!">
|
||
|
|
<button id="send">Send</button>
|
||
|
|
</form>
|
||
|
|
</td><td valign="top" width="50%">
|
||
|
|
<div id="output"></div>
|
||
|
|
</td></tr></table>
|
||
|
|
</body>
|
||
|
|
</html>
|
||
|
|
`))
|