I couldn't find a clear answer on Google or SO.
I know a net.Server
instance has a close
method that doesn't allow any more clients in. But it doesn't disconnect clients already connected. How can I achieve that?
I know how this can be done with Http, I guess I'm asking if it's the same with Tcp or if it's different.
With Http, I'd do something like this:
var http = require("http");
var clients = [];
var server = http.createServer(function(request, response) {
response.writeHead(200, {"Content-Type": "text/plain"});
response.end("You sent a request.");
});
server.on("connection", function(socket) {
socket.write("You connected.");
clients.push(socket);
});
// .. later when I want to close
server.close();
clients.forEach(function(client) {
client.destroy();
});
Is it the same for Tcp? Or should I do anything differently?
Since no answer was provided, here is an example of how to open and (hard) close a server in node.js:
Create the server:
var net = require('net');
var clients = [];
var server = net.createServer();
server.on('connection', function (socket) {
clients.push(socket);
console.log('client connect, count: ', clients.length);
socket.on('close', function () {
clients.splice(clients.indexOf(socket), 1);
});
});
server.listen(8194);
Close the server:
// destroy all clients (this will emit the 'close' event above)
for (var i in clients) {
clients[i].destroy();
}
server.close(function () {
console.log('server closed.');
server.unref();
});
Update: Since using the above code, I've ran into an issue that close
will leave the port open (TIME_WAIT in Windows). Since I'm intentionally closing the connection, I'm using unref as it appears to fully close the tcp server, though I'm not 100% if this is the correct way of closing the connection.
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