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。

WebSocket搭建一个简单的聊天室_html

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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