update port

src/server.ts

@@ -6,9 +6,9 @@ const host = 'localhost';
 const port = 3000;
 
 const sender = new Push();
-await sender.bind(`tcp://127.0.0.1:5567`);
+await sender.bind(`tcp://127.0.0.1:5557`);
 const receiver = new Pull();
-await receiver.bind(`tcp://127.0.0.1:5568`);
+await receiver.bind(`tcp://127.0.0.1:5558`);
 
 const generateId = () => nanoid(32);