tcplexer/tcplexer.ts

import { iterateReader } from "https://deno.land/std@0.145.0/streams/conversion.ts";

const clients: Set<Deno.Conn> = new Set();

(async () => {
  try {
    const sourceListener = Deno.listen({ port: 8080 });
    for await (const source of sourceListener) {
      console.info("Source connected from", source.remoteAddr);
      for await (const packet of iterateReader(source)) {
        clients.forEach((client, _v2, _set) =>
          client.write(packet).catch(() => {
            console.log(`Client disconnected from`, client.remoteAddr);
            clients.delete(client);
          })
        );
      }
      console.info(`Source disconnected from`, source.remoteAddr);
    }
  } catch (err) {
    console.error("Error listening for TCP connections on port 8080:", err);
  }
})();

(async () => {
  try {
    const clientsListener = Deno.listen({ port: 8081 });
    while (true) {
      try {
        const conn = await clientsListener.accept();
        console.log("Client connected from", conn.remoteAddr);
        clients.add(conn);
      } catch (err) {
        console.error("Error accepting client connection:", err);
      }
    }
  } catch (err) {
    console.error("Error listening for TCP connections on port 8081:", err);
  }
})();