您好我被要求制作一组服务器来监听某些端口,这里的问题是当我使用时:
“serviceSocket.connect(parseInt函数(80),” elpais.es”,
我真正需要的是使用地址和remotePorts数组。 像这样:
“serviceSocket.connect(remotePort [i],adress [i])
但我无法将该信息传递给serviceSocket。 此外,当我尝试使用server.address()获取已经被触发的端口时(例如,我通过8002连接),我得到的回报总是8008.
如何获得正确的端口或传递信息?
var ports = [8001,8002,8003,8004,8005,8006,8007,8008];
var adress = ["www.cnc.uji.es","en.wikipedia.org","random.random2.es","ftp.rediris.es", "elpais.es" ,"","",""]
var remotePort = [80,80,443,21,80,"","",""]
for (i=0 ;i<ports.length; i++){
var server = net.createServer(function(socket){
socket.on('data', function(data){
console.log(server.address());
var serviceSocket = new net.Socket();
serviceSocket.connect(parseInt(80),"elpais.es", function(){
serviceSocket.write(data);});
serviceSocket.on('data',function(data){console.log(server.address());
socket.write(data);});
});
}).listen(ports[i]);
}
console.log('TCP server accepting connection on port ' + ports)
答案 0 :(得分:0)
你的代码是异步运行的,当回调函数调用i时,for循环已经完成,这就是为什么你总是得到数组的最后一个元素。
尝试这样的事情
var net = require('http');
var ports = [8001,8002,8003,8004,8005,8006,8007,8008];
var adress = ["www.cnc.uji.es","en.wikipedia.org","random.random2.es","ftp.rediris.es", "elpais.es" ,"","",""];
var remotePort = [80,80,443,21,80,"","",""];
for (i=0 ;i<ports.length; i++){
makeServer(i);
}
console.log('TCP server accepting connection on port ' + ports);
function makeServer(i){
var server = net.createServer(function(socket){
socket.on('data', function(data){
console.log(server.address());
var serviceSocket = new net.Socket();
serviceSocket.connect(parseInt(80),"elpais.es", function(){
serviceSocket.write(data);});
serviceSocket.on('data',function(data){console.log(server.address());
socket.write(data);});
});
}).listen(ports[i]);
};
代码未经过测试。