1 files changed, 11 insertions, 1 deletions

diff --git a/server.js b/server.js
index faf7954..217d152 100755
--- a/server.js
+++ b/server.js
@@ -3,7 +3,17 @@ const http = require("http");
 const express = require("express");
 const socketio = require("socket.io")
 
-const PORT = 8080;
+const PORT = (() => {
+  if (process.argv.length == 3) {
+    return +process.argv[2];
+  } else if (process.argv.length == 2) {
+    return 8080;
+  } else {
+    console.log("Usage: server.js [port]");
+    process.exit(1);
+  }
+})();
+
 
 const app = express();
 const server = http.Server(app);