add ping to server

README.md

@@ -1,5 +1,5 @@
-# TConsole
+# Termsole
-Console log to terminal
+Bring browser console to your terminal
 
+This package is intended to use while developement
 
-# https://stackoverflow.com/questions/65822409/logging-to-terminal-console-instead-of-browser-console-in-react-js

cli.js

@@ -2,6 +2,7 @@
 const WebSocket = require('ws');
 const chalk = require('chalk');
 const repl = require('repl');
+const { DEFAULT_HOST, DEFAULT_PORT } = require("./config");
 
 const getTime = () => {
   const now = new Date();
@@ -11,7 +12,7 @@ const getTime = () => {
   return `[${hours}:${minutes}:${seconds}]`;
 }
 
-const out = (text, color) => {
+const out = (text, color = "white") => {
   switch (color) {
     case "white":
       console.log(getTime(), chalk.white(text))
@@ -31,10 +32,20 @@ const out = (text, color) => {
   }
 }
 
-const server = new WebSocket.Server({ port: 3456 });
+function heartbeat() {
+  this.isAlive = true;
+}
 
-server.on('connection', (ws) => {
+console.log(`Listening to http://${DEFAULT_HOST}:${DEFAULT_PORT}`);
-  ws.on('message', (message) => {
+const server = new WebSocket.Server({ port: DEFAULT_PORT, host: DEFAULT_HOST});
+
+server.on("connection", (conn) => {
+  conn.isAlive = true;
+
+  conn.on('pong', heartbeat);
+
+  conn.on('message', (message) => {
+    //conn.isAlive = true;
     const event = JSON.parse(message);
     const { type, data } = event;
     switch (type) {
@@ -54,6 +65,32 @@ server.on('connection', (ws) => {
         data.forEach((text) => out(text, "white"));
     }
   });
+  
+  conn.on("close", (event) => {
+    out("[TCONSOLE]: Closed", conn);
+  });
+
 });
 
+const interval = setInterval(() => {
+  server.clients.forEach((conn) => {
+    if (conn.isAlive === false)  return conn.terminate();
+
+    conn.isAlive = false;
+    conn.ping("");
+  });
+}, 5000);
+
+server.on("close", ()  => {
+  clearInterval(interval);
+  process.exit(0);
+});
+
+server.on("error", (event) => {
+  out(event, "red");
+  process.exit(1);
+})
+
+
+// Start a node repl
 const r = repl.start('> ');

config.js

@@ -0,0 +1,2 @@
+exports.DEFAULT_PORT = 3456;
+exports.DEFAULT_HOST = "localhost";

index.js

@@ -1,9 +1,7 @@
+import { DEFAULT_HOST, DEFAULT_PORT } from "./config";
 let ws = null;
 
-// https://stackoverflow.com/a/44782052/7539840
+const configure = (conn, defaultConsole) => {
-const defaultConsole = Object.assign(Object.create(Object.getPrototypeOf(console)), console);
-
-const configure = (conn) => {
   // skip if already configured
   if (console._tsconsole_configured) return;
   console._tsconsole_configured = true;
@@ -30,34 +28,41 @@ const configure = (conn) => {
 
 }
 
-const release = () => {
+const release = (defaultConsole) => {
   console = defaultConsole;
   ws = null;
 }
 
 const termsole = (options = {}) => {
-  if (ws) return; // already running
+  // Ensure termsole doesn't run in production mode
+  if (process.env.NODE_ENV && process.env.NODE_ENV !== 'development') return;
+
+  if (ws) {
+    console.log("already running");
+    return; // already running
+  }  
+  const defaultConsole = Object.assign(Object.create(Object.getPrototypeOf(console)), console);
 
   options = {
-    host: "localhost",
+    host: DEFAULT_HOST,
-    port: 3456,
+    port: DEFAULT_PORT,
     ssl: false,
     ...options,
   }
 
   ws = new WebSocket(`${options.ssl ? "wss" : "ws"}://${options.host}:${options.port}`);
   ws.onopen = () => {
-    configure(ws);
+    configure(ws, defaultConsole);
     console.log('[TCONSOLE]: Connected');
   };
 
   ws.onclose = (event) => {
-    release();
+    release(defaultConsole);
     console.log("[TCONSOLE]: Disconnected", event.message);
   }
 
   ws.onerror = (event) => {
-    release();
+    release(defaultConsole);
     console.error("[TCONSOLE]: Disconnected", event.message);
   }
 }