[英]How to send data to specific sockets created using net.createServer() connection event?
对于套接字,我已经习惯了perl和POE编程,并且我正在考虑将node.js用于不是基于Web的应用程序服务器。 我具有编写网页用户界面的JavaScript知识。
我一直在使用net模块,并已成功地同时从多个客户端连接到该模块。
var net = require('net');
var port = 63146;
var socketNum = 0;
var adminServer = net.createServer(function(socket){
//add connection count
socketNum++;
socket.nickname = "Con# " + socketNum;
var clientName = socket.nickname;
console.log(clientName + "connected from " + socket.remoteAddress);
socket.write("You have been given the client name of " + clientName);
});
adminServer.listen(port, function() {
console.log("Server listening at" + port);
});
因此,我遇到的问题是,如果我创建了另一个功能,该功能需要将数据发送到特定的客户端,而不是向所有客户端广播,则我不知道该怎么做。
我已经在这里和Google进行了广泛的搜索。 许多简单的tcp服务器和回显服务器到单个客户端的示例,但对于多个客户端则没有。
我正在尝试在没有socket.io的情况下执行此操作,因为并非所有客户端都将基于Web。
任何帮助,将不胜感激,
ž
您必须以某种方式自己存储它们,无论是简单地添加到数组还是添加到例如以某个唯一标识符为键的对象。
这里使用一个对象:
var net = require('net');
var port = 63146;
var socketNum = 0;
var sockets = Object.create(null);
var adminServer = net.createServer(function(socket){
//add connection count
socketNum++;
socket.nickname = "Con# " + socketNum;
var clientName = socket.nickname;
sockets[clientName] = socket;
socket.on('close', function() {
delete sockets[clientName];
});
console.log(clientName + " connected from " + socket.remoteAddress);
socket.write("You have been given the client name of " + clientName);
});
adminServer.listen(port, function() {
console.log("Server listening at" + port);
});
然后,您可以通过分配的昵称找到特定的套接字。
这是示例工作代码。 希望这对其他人有用!
var net = require('net');
var port = 63146;
var conSeen = Object.create(null);
var socketNum = 0;
var adminServer = net.createServer(function(socket){
//add connection count
socketNum++;
socket.nickname = "Con" + socketNum;
var clientName = socket.nickname;
//console.log(socket);
conSeen[clientName] = socket;
socket.on('close', function() {
delete sockets[clientName];
});
console.log(clientName + " has connected from " + socket.remoteAddress);
socket.write("You have been given the client name of " + clientName + "\r\n");
socket.on('data', function(inputSeen) {
var clientName = socket.nickname;
var input = inputSeen.toString('utf8');
input = input.replace(/(\r\n|\n|\r)/gm,"");
console.log("Saw : " + input + " from " + clientName + "\r\n");
if (input === 'sendTest') {
conSeen[clientName].write('test 123\r\n');
}
});
});
adminServer.listen(port, function() {
console.log("Server listening on " + port);
});
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