Attempting to fix the issue with 4001, this updates the cypress tests so that it is easier to change the port on which it runs as well as updating the electron usage of the app to use port 0 (an ephermeral port).

packages/builder/cypress.json

@@ -1,5 +1,8 @@
 {
-  "baseUrl": "http://localhost:4001/_builder/",
+  "baseUrl": "http://localhost:4005/_builder/",
   "video": true,
-  "projectId": "bmbemn"
+  "projectId": "bmbemn",
+  "env": {
+    "PORT": "4005"
+  }
 }

packages/builder/cypress/integration/createApp.spec.js

@@ -2,7 +2,7 @@ context('Create an Application', () => {
 
     beforeEach(() => {
         cy.server()
-        cy.visit('localhost:4001/_builder')
+        cy.visit(`localhost:${Cypress.env("PORT")}/_builder`)
     })
 
     // https://on.cypress.io/interacting-with-elements
@@ -11,7 +11,7 @@ context('Create an Application', () => {
         // https://on.cypress.io/type
         cy.createApp('My Cool App', 'This is a description')
 
-        cy.visit('localhost:4001/_builder')
+        cy.visit(`localhost:${Cypress.env("PORT")}/_builder`)
 
         cy.contains('My Cool App').should('exist')
     })

packages/builder/cypress/integration/createAutomation.spec.js

@@ -1,7 +1,7 @@
 context("Create a automation", () => {
   before(() => {
     cy.server()
-    cy.visit("localhost:4001/_builder")
+    cy.visit(`localhost:${Cypress.env("PORT")}/_builder`)
 
     cy.createApp(
       "Automation Test App",

packages/builder/cypress/integration/createBinding.spec.js

@@ -1,6 +1,6 @@
 xcontext('Create a Binding', () => {
     before(() => {
-        cy.visit('localhost:4001/_builder')
+        cy.visit(`localhost:${Cypress.env("PORT")}/_builder`)
         cy.createApp('Binding App', 'Binding App Description')
         cy.navigateToFrontend()
     })

packages/builder/cypress/integration/createComponents.spec.js

@@ -1,7 +1,7 @@
 xcontext("Create Components", () => {
   before(() => {
     cy.server()
-    cy.visit("localhost:4001/_builder")
+    cy.visit(`localhost:${Cypress.env("PORT")}/_builder`)
     // https://on.cypress.io/type
     cy.createApp("Table App", "Table App Description")
     cy.createTable("dog", "name", "age")

packages/builder/cypress/integration/createTable.spec.js

@@ -1,6 +1,6 @@
 context("Create a Table", () => {
   before(() => {
-    cy.visit("localhost:4001/_builder")
+    cy.visit(`localhost:${Cypress.env("PORT")}/_builder`)
     cy.createApp("Table App", "Table App Description")
   })
 

packages/builder/cypress/integration/createUser.spec.js

@@ -2,7 +2,7 @@ context('Create a User', () => {
 
     before(() => {
         cy.server()
-        cy.visit('localhost:4001/_builder')
+        cy.visit(`localhost:${Cypress.env("PORT")}/_builder`)
         // https://on.cypress.io/type
         cy.createApp('User App', 'This app is used to test user creation')
     })

packages/builder/cypress/integration/createView.spec.js

@@ -1,6 +1,6 @@
 context("Create a View", () => {
   before(() => {
-    cy.visit("localhost:4001/_builder")
+    cy.visit(`localhost:${Cypress.env("PORT")}/_builder`)
     cy.createApp("View App", "View App Description")
     cy.createTable("data")
     cy.addColumn("data", "group", "Text")

packages/builder/cypress/integration/screens.spec.js

@@ -2,7 +2,7 @@
 context('Screen Tests', () => {
     before(() => {
         cy.server()
-        cy.visit('localhost:4001/_builder')
+        cy.visit(`localhost:${Cypress.env("PORT")}/_builder`)
         cy.createApp('Conor Cy App', 'Table App Description')
         cy.navigateToFrontend()
     })

packages/builder/cypress/setup.js

@@ -7,6 +7,7 @@ const rimraf = require("rimraf")
 const { join, resolve } = require("path")
 // const run = require("../../cli/src/commands/run/runHandler")
 const initialiseBudibase = require("../../server/src/utilities/initialiseBudibase")
+const cypressConfig = require("../cypress.json")
 
 const homedir = join(require("os").homedir(), ".budibase")
 
@@ -15,6 +16,7 @@ rimraf.sync(homedir)
 process.env.BUDIBASE_API_KEY = "6BE826CB-6B30-4AEC-8777-2E90464633DE"
 process.env.NODE_ENV = "cypress"
 process.env.ENABLE_ANALYTICS = "false"
+process.env.PORT = cypressConfig.env.PORT
 
 // Stop info logs polluting test outputs
 process.env.LOG_LEVEL = "error"

packages/builder/package.json

@@ -14,8 +14,8 @@
     "cy:run": "cypress run",
     "cy:open": "cypress open",
     "cy:run:ci": "cypress run --browser electron --record --key f308590b-6070-41af-b970-794a3823d451",
-    "cy:test": "start-server-and-test cy:setup http://localhost:4001/_builder cy:run",
-    "cy:ci": "start-server-and-test cy:setup http://localhost:4001/_builder cy:run:ci"
+    "cy:test": "start-server-and-test cy:setup http://localhost:4005/_builder cy:run",
+    "cy:ci": "start-server-and-test cy:setup http://localhost:4005/_builder cy:run:ci"
   },
   "jest": {
     "globals": {

packages/builder/src/components/automation/Shared/WebhookDisplay.svelte

@@ -13,7 +13,8 @@
     if (production) {
       return `${appUrl}/${uri}`
     } else {
-      return `http://localhost:4001/${uri}`
+
+      return `${window.location.origin}/${uri}`
     }
   }
 

packages/server/.env.template

@@ -8,9 +8,6 @@ CLIENT_ID={{clientId}}
 # used to create cookie hashes
 JWT_SECRET={{cookieKey1}}
 
-# port to run http server on
-PORT=4001 
-
 # error level for koa-pino
 LOG_LEVEL=info
 

packages/server/package.json

@@ -36,7 +36,7 @@
     "test:integration": "jest routes --runInBand",
     "test:watch": "jest --watch",
     "run:docker": "node src/index",
-    "dev:builder": "nodemon src/index.js",
+    "dev:builder": "PORT=4001 nodemon src/index.js",
     "electron": "electron src/electron.js",
     "build:electron": "electron-builder --dir",
     "publish:electron": "electron-builder -mwl --publish always",

packages/server/src/app.js

@@ -50,8 +50,10 @@ destroyable(server)
 
 server.on("close", () => console.log("Server Closed"))
 
-module.exports = server.listen(env.PORT || 4001, async () => {
+module.exports = server.listen(env.PORT || 0, async () => {
   console.log(`Budibase running on ${JSON.stringify(server.address())}`)
+  env._set("PORT", server.address().port)
+  eventEmitter.emitPort(env.PORT)
   automations.init()
   if (env.SELF_HOSTED) {
     await selfhost.init()

packages/server/src/electron.js

@@ -7,6 +7,7 @@ const { existsSync } = require("fs-extra")
 const initialiseBudibase = require("./utilities/initialiseBudibase")
 const { budibaseAppsDir } = require("./utilities/budibaseDir")
 const { openNewGitHubIssue, debugInfo } = require("electron-util")
+const eventEmitter = require("./events")
 
 const budibaseDir = budibaseAppsDir()
 const envFile = join(budibaseDir, ".env")
@@ -17,7 +18,11 @@ async function startApp() {
   }
   // evict environment from cache, so it reloads when next asked
   delete require.cache[require.resolve("./environment")]
+  // store the port incase its going to get overridden
+  const port = process.env.PORT
   require("dotenv").config({ path: envFile })
+  // overwrite the port - don't want to use dotenv for the port
+  require("./environment")._set("PORT", port)
 
   unhandled({
     showDialog: true,
@@ -34,9 +39,6 @@ async function startApp() {
     },
   })
 
-  const APP_URL = "http://localhost:4001/_builder"
-  const APP_TITLE = "Budibase Builder"
-
   let win
 
   function handleRedirect(e, url) {
@@ -46,22 +48,26 @@ async function startApp() {
 
   async function createWindow() {
     app.server = require("./app")
-    win = new BrowserWindow({
-      width: 1920,
-      height: 1080,
-      icon: join(__dirname, "..", "build", "icons", "512x512.png"),
-    })
-    win.setTitle(APP_TITLE)
-    win.loadURL(APP_URL)
-    if (isDev) {
-      win.webContents.openDevTools()
-    } else {
-      autoUpdater.checkForUpdatesAndNotify()
-    }
+    eventEmitter.on("internal:port", port => {
+      const APP_URL = `http://localhost:${port}/_builder`
+      const APP_TITLE = "Budibase Builder"
+      win = new BrowserWindow({
+        width: 1920,
+        height: 1080,
+        icon: join(__dirname, "..", "build", "icons", "512x512.png"),
+      })
+      win.setTitle(APP_TITLE)
+      win.loadURL(APP_URL)
+      if (isDev) {
+        win.webContents.openDevTools()
+      } else {
+        autoUpdater.checkForUpdatesAndNotify()
+      }
 
-    // open _blank in default browser
-    win.webContents.on("new-window", handleRedirect)
-    win.webContents.on("will-navigate", handleRedirect)
+      // open _blank in default browser
+      win.webContents.on("new-window", handleRedirect)
+      win.webContents.on("will-navigate", handleRedirect)
+    })
   }
 
   app.whenReady().then(createWindow)

packages/server/src/events/index.js

@@ -19,6 +19,10 @@ class BudibaseEmitter extends EventEmitter {
   emitTable(eventName, appId, table = null) {
     tableEmission({ emitter: this, eventName, appId, table })
   }
+
+  emitPort(portNumber) {
+    this.emit("internal:port", portNumber)
+  }
 }
 
 const emitter = new BudibaseEmitter()