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Node.js 如何管理NodeJs TCP客户端_Node.js_Arduino_Connection_Tcpclient_Emit - Fatal编程技术网

Node.js 如何管理NodeJs TCP客户端

Node.js 如何管理NodeJs TCP客户端,node.js,arduino,connection,tcpclient,emit,Node.js,Arduino,Connection,Tcpclient,Emit,我在一台装有Arduino电机的机器上工作,用于在偏航和俯仰轴上旋转。我还有一个nodejs服务器实现,用于向机器发送数据(坐标列表)。为此,我在TCP_Client.js中实现了一个TCPClient类,如下所示: var net = require('net'); /*************************************************************************************************************

我在一台装有Arduino电机的机器上工作,用于在偏航和俯仰轴上旋转。我还有一个nodejs服务器实现,用于向机器发送数据(坐标列表)。为此,我在TCP_Client.js中实现了一个TCPClient类,如下所示:

    var net = require('net');

/***********************************************************************************************************************
---------------------------------------------------Client TCP socket----------------------------------------------------
* *********************************************************************************************************************/

const port = 5303;
const host = 'localhost';

// creating a custom socket client and connecting it....
var client;
class TCPClient {

    constructor(host, port) {
        this.host = host;
        this.port = port;

        client = new net.Socket();

        client.connect({
            port: this.port,
            host: this.host
        });

        this.onConnect();
    }

    onConnect() {
        client.on('connect',function(){
            console.log('Client: connection established with server');

            console.log('---------client details -----------------');
            var address = client.address();
            var port = address.port;
            var family = address.family;
            var ipaddr = address.address;
            console.log('Client is listening at port' + port);
            console.log('Client ip :' + ipaddr);
            console.log('Client is IP4/IP6 : ' + family);

        });

        client.on('drain', function(){
            console.log("DRAIN");
        });

        this.setEncoding();

        client.on('data', function(data) {
            console.log("RECEIVED");
            client.end();
        });

        client.on('end', function(){
            console.log("END");
        });
    }

    setEncoding() {
        console.log("setEncoding");
        client.setEncoding('utf8');
    }

    onData(data) {
        console.log("DATA= ", data);
        client.write(data);
    }

    end() {
        client.end();
    }

    close() {
        client.close();
    }
}

//CREATE A TCP CLIENT OBJECT
exports.newTCPclient = function (host, port) {
    console.log("CONSTRUCT TCP CLIENT");
    var tc = new TCPClient(host, port);
    return tc;
}
在server.js中,我初始化了一个全局TCPClient,如下所示:

const port = 5033;
const host = '192.168.100.20';
var tcp_client = tcpclient.newTCPclient(host, port);
tcp_client.onData(coords);
我将坐标合并到一个名为coords的文本变量中,如下所示:

const port = 5033;
const host = '192.168.100.20';
var tcp_client = tcpclient.newTCPclient(host, port);
tcp_client.onData(coords);
每次移动arduino电机时,我都会重复此操作,但过了一会儿,我就会遇到以下错误:

events.js:174
throw er; //Unhandled 'error' event

Error: read ECONNRESET
at TCP.onStreamRead(internal/stream_base_commons.js:111:27)
Emitted 'error' event at:
at emitErrorNT (internal/streams/destroy.js:91:8)
at emitErrorAndCloseNT (internal/streams/destroy.js:59:3)
at process. tckCallback (internal/process/next_tick.js:63:19)
我的人际关系不是很流利。它与TCP客户机类相关吗?如果是这样的话,我如何修复它


谢谢您的帮助。

ECONNRESET
表示TCP会话的另一端突然关闭了其连接端。确保它在接收端正确关闭连接。
运行代码时,使用
--abort on uncaught exception
节点选项,它将显示详细的报告

非常感谢您的回答。你认为处理这种错误的正确方法是什么?我只希望我的服务器在发生错误后仍处于活动状态。您是否可以选择调试Arduino端代码?因为问题似乎出在Arduino方面。确保正确读取数据并正确关闭连接。另外,请告诉我们更多关于这个问题的信息。