A small library for telnet clients and servers built with asynchronous generators
npm install telnet-generator
Server
import { TelnetServer, TelnetConnection } from "telnet-generator";
async function daytime(conn: TelnetConnection) {
const remote = conn.name();
console.log(`${remote}: connected`);
conn.sendln(new Date().toString());
conn.disconnect();
console.log(`${remote}: disconnected`);
}
(async () => {
const server = new TelnetServer({ port: 9999 });
console.log("Starting daytime server");
for await (const event of server.listen()) {
if (event.type === "connect") {
daytime(event.connection);
}
}
})();
Client
import { TelnetClient } from "telnet-generator";
(async () => {
const client = new TelnetClient({ host: "india.colorado.edu", port: 13 });
console.log("Starting daytime client");
const connection = client.connect();
for await (const event of connection.receive()) {
if (event.type === "data") {
console.log(event.data);
} else if (event.type === "error") {
console.error(event.error);
break;
}
}
})();
telnet-generator is a small library for building telnet-like clients and servers. It has no dependencies. The basic premise of this library is to use ECMAScript generator functions and asynchronous iterators for receiving events, instead of callbacks.
Check the examples directory for some examples on different telnet clients and servers.