使用Nodejs搭建简单的TCP聊天服务器

偏执的太偏执、 2024-04-19 00:43 6阅读 0赞

#### 1.导入模块,监听端口 ####

var net = require('net');
    //创建服务器
    var server = net.createServer(8081);

#### 2.接受客户端连接 ####

//监听连接事件
    server.on('connection', function (socket) { 
        socket.write("you have connected the server,input 'q' to quit\n");
        sockets.push(socket);
        console.log(sockets.length + ' have connected');
    });

#### 3.从连接中读取数据 ####

//创建集合管理socket
    var sockets = [];
    //socket监听数据
    socket.on('data', function (data) { 
        //如果监听到的数据是'q',则断开socket连接
        if (data.toString().trim().toLowerCase() === 'q') { 
            socket.write('you have quited the chat room\n');
            return socket.end();
        }
        //将socket传输的数据广播到其他socket
        sockets.forEach(function (otherSocket) { 
            //排除掉发送数据的socket
            if (otherSocket !== socket) { 
                otherSocket.write(data.toString());
            }
            })
        });
        //socket连接断开后从sockets中移除socket
        socket.on('end', function () { 
            console.log('a client have quited the chat room\n');
            sockets.splice(sockets.indexOf(socket), 1);
            console.log(sockets.length + ' have connected');
        });

#### 效果 ####

1.通过`node server.js启动`服务端  
![在这里插入图片描述][20190914223217326.png]  
2.通过`telnet localhost 8081`分别启动客户端1和客户端2

客户端:![在这里插入图片描述][20190914223406884.png]  
服务端:  
![在这里插入图片描述][20190914223438468.png]  
3.两个客户端相互通信,客户端1发送hello，客户端2发送world  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1NDUzMjY2_size_16_color_FFFFFF_t_70]  
截图中客户端1的hello是发送出去的，world是收到的数据

4.客户端输入’q’退出

客户端:  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1NDUzMjY2_size_16_color_FFFFFF_t_70 1]  
服务器端:  
![在这里插入图片描述][20190914223833906.png]

### 完整代码 ###

`server.js`

[20190914223217326.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/18/9c2d688cee234d6b965ad24d78a8e447.png
[20190914223406884.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/18/20dc6f8e049b4c799c366610bd15a26b.png
[20190914223438468.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/18/07ad8f192f9647a6b9ca3f361ae3822e.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1NDUzMjY2_size_16_color_FFFFFF_t_70]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/18/7521dee73fa647579d44357f3f4fabb9.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1NDUzMjY2_size_16_color_FFFFFF_t_70 1]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/18/234aadd1299149b090b7aeef9c0dda1a.png
[20190914223833906.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/18/d548fd4203a747cbb73f84c0f41b12cb.png