这个例子比较简单：
- 只有一个聊天室，大家进入的都是同一个聊天室。
- 没有用户登录，用户登录直接根据id给出匿名用户。
程序截图，UI我直接用的 https://github.com/Niessy/websocket-golang-chat 这里给的例子的Html代码。
服务器端Golang代码：
package main
import (
"code.google.com/p/go.net/websocket"
"container/list"
"fmt"
"html/template"
"log"
"net/http"
"os"
)
const (
"localhost:4000" // server address
)
var (
pwd, _ = os.Getwd()
+ "/chat.html"))
*list.List
int
)
// RootHandler renders the template for the root page
func RootHandler(w http.ResponseWriter, req *http.Request) {
:=
if err != nil
http.Error(w, err.Error(), http.StatusInternalServerError)
}
}
// WebSocket server to handle chat between clients
func SockServer(ws *websocket.Conn) {
var err error
var clientMessage string
// cleanup on server side
defer func() {
if err = ws.Close(); err != nil
"Websocket could not be closed", err.Error())
}
}()
:=
"Client connected:", client)
++
:=
:= fmt.Sprintf("guest %d", id)
"Client username:", clientUserName)
:=
defer
nil, fmt.Sprintf("welcome %s join\n", clientUserName))
// for loop so the websocket stays open otherwise
// it'll close after one Receieve and Send
for
if err = websocket.Message.Receive(ws, &clientMessage); err != nil
// If we cannot Read then the connection is closed
"Websocket Disconnected waiting", err.Error())
"Number of clients still connected ...", activeClients.Len())
return
}
"%s %s > %s", client, clientUserName, clientMessage)
fmt.Println(clientMessage)
SendMessage(ws, clientMessage)
}
}
func SendMessage(self *websocket.Conn, data string) {
for item := activeClients.Front(); item != nil; item = item.Next() {
:= item.Value.(*websocket.Conn)
if
panic("item not *websocket.Conn")
}
if item.Value ==
continue
}
websocket.Message.Send(ws, data)
}
}
// Initialize handlers and websocket handlers
func
"/", RootHandler)
"/sock", websocket.Handler(SockServer))
}
func
activeClients = list.New()
:= http.ListenAndServe(listenAddr, nil)
if err != nil
panic("ListenAndServe: " +
}
}页面模版（chat.html）
使用模版就是为了避免服务器地址在多个地方配置，只要在一个地方配置即可。
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<title> WebSockets </title>
<style>
*
padding: 0px;
margin: 0px;
}
body
width:100%;
font-family: fantasy;
font-size: 13px;
}
h1
text-align: center;
}
#text
position: relative;
left: 500px;
top: 20px;
}
#chat-box-container {
width: 600px;
height: 100%;
position: relative;
left: 500px;
top: 50px;
}
#chatbox
position: relative;
right: 150px;
border-style: solid;
border-radius: 2px;
padding: 10px;
}
</style>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
<script>
try
var sock = new WebSocket("ws://{{.}}/sock");
//sock.binaryType = 'blob'; // can set it to 'blob' or 'arraybuffer
"Websocket - status: " +
= function(m) {
"CONNECTION opened..." + this.readyState);}
= function(m) {
'#chatbox').append('<p>' + m.data + '</p>');}
= function(m) {
"Error occured sending..." +
= function(m) {
"Disconnected - status " + this.readyState);}
catch(exception) {
console.log(exception);
}
</script>
</head>
<body>
<h1> This chat is powered by web sockets </h1>
<div id ="text">
<textarea id="textin" cols="30" rows="4" placeholder="This is where you type..." autofocus>
</textarea>
<button id="send">Send Message</button>
</div>
<divid="chat-box-container">
<h2> This is the chatbox... </h2>
<div id="chatbox">
<p> Go Type stuff... </p>
</div>
</div>
<script>
'#textin').val("");
// take what's the textbox and send it off
'#send').click( function(event) {
var txt = $('#textin').val()
sock.send(txt);
'#textin').val("");
'#chatbox').append('<p> I said ' + txt + '</p>');
});
</script>
</body>
</html>参考资料：
一个Go语言实现的聊天室。
https://github.com/square/SocketRocket/blob/master/TestChatServer/go/chatroom.go
websocket-golang-chat
https://github.com/Niessy/websocket-golang-chat
使用 Go 语言和 HTML5 WebSocket 构建一个 Web 聊天室http://theplant.jp/en/blogs/10-techforce-building-a-web-chat-with-the-go-programming-language-and-html5-websockets
https://github.com/kobeld/gochatting
在golang中，html5，使用websocket，建立一个最简单的高并发web聊天室
http://www.cppblog.com/AutomateProgram/archive/2012/12/20/196481.html
jmcvetta / tokenizerd A data tokenization server
https://github.com/jmcvetta/tokenizerd
Implementing Chat with WebSockets and Go
http://gary.beagledreams.com/page/go-websocket-chat.html
golang websocket 简易聊天室
http://www.dotcoo.com/golang-websocket-chatroom
Polemo Chat客户端行为