msgpack-rpc-deno

import { Server, Dispatcher } from "https://deno.land/x/msgpack_rpc/server.ts";

const hostname = "localhost";
const port = 18800;

const dispatcher: Dispatcher = {
  async sum(x: number, y: number): Promise<number> {
    return x + y;
  },
};

const server = new Server(dispatcher);

for await (const listener of Deno.listen({
  hostname,
  port,
})) {
  console.log("Client has connected");
  server
    .start(listener)
    .then(() => console.log("Client has disconnected"))
    .catch((e) => console.error(e));
}

import { Client } from "https://deno.land/x/msgpack_rpc/client.ts";

const hostname = "localhost";
const port = 18800;

try {
  console.log(`Connect to MessagePack-RPC server (${hostname}:${port})`);
  const conn = await Deno.connect({ hostname, port });

  console.log(`Call 'sum' with [1, 1]`);
  const client = new Client(conn);
  const result = await client.call("sum", 1, 1);
  console.log(result);

  console.log(`Close connection`);
  conn.close();
} catch (e) {
  console.error(e);
}