Network error. The request timed out in react app - javascript

my react app was working fine on localhost but
after build react app and upload it on my server it doesnt work and this is what i get
I think it doesnt connect to graphql and mongodb
and this is my dependencies
what should I do?
edit:
i changed URIs in code to my host and I dont know where's my problem
in localhost I start server every time with npm run dev is there any chance that i have start app in server too?

Related

mongodb npm preventing application to run on www, yet runs on localhost

I have this node.js accounts app that I'm trying to implement a mongoDB database onto, but it seems to have errors when I upload it to cpanel. My mongoDB url is in this format: mongodb+srv://:#. After some experimenting, turning the Node.js version to ^14 caused errors to stop, but the app still wouldn't run (going to the url reslted in a 503 error, this is the current state of the server).
github: https://github.com/codingtuba/accounts.aimedtuba/tree/mongodb
before mongo DB: https://github.com/codingtuba/accounts.aimedtuba

Move my MERN app (developped on windows) on a ubuntu machine and access it via LAN network

It's my first time here so please bear with me :)
Basically i developped a full stack MERN web application on my windows 10 machine (node js, express js and Mongodb in the backend + database and react js for the frontend), to run each one of them for now i use vscode (nodemon server for the backend and npm start for the front) all are running on my localhost on different ports.
what i need to do is to move that MERN app to an ubuntu machine and make it accessible via LAN network of that ubuntu continuously.
i guess i need to use git to move the app from windows to ubuntu? (correct me if i'm wrong) but how to make it run correctly there? and should i install a specific server to run it all on the LAN?
Thank you for the help in advance !

Why am I getting an error when trying to run a new react native project

I have created a new react native project by running "react-native init MyFirstProject". I have also installed node and have added no code of my own to any of the files.
I have tried to run the project to make sure it works by running "react-native run-ios --simulator="iPhone 8"". The command runs successfully but I am given the following error.
Could not connect to development server.
Ensure the following:
Node server is running and available on the same network - run 'npm start' from react-native root
Node server URL is correctly set in AppDelegate
WiFi is enabled and connected to the same network as the Node Server
URL: http://localhost:8081/index.bundle?platform=ios&dev=true&minify=false
RCTFatal
__28-[RCTCxxBridge handleError:]_block_invoke
_dispatch_call_block_and_release
_dispatch_client_callout
_dispatch_main_queue_callback_4CF
CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE
__CFRunLoopRun
CFRunLoopRunSpecific
Blockquote
GSEventRunModal
UIApplicationMain
main
start
How do I fix this error?
Try opening your project ios/MyFirstProject/MyFirstProject.xcworkspace and see if there's any build error.
I ran into this problem too, with the same error:
RCTFatal __28-[RCTCxxBridge handleError:]_block_invoke
It turned out that I had another server running on my local machine on the same port that the expo development client server was running (:8081), and that it was taking priority and then obviously giving the client a very different response to what it was expecting. Quitting the other server fixed the problem.

WebSockets working on localhost, but do not work on remote Ubuntu host

I have two applications - browser based client and NodeJS based server that are both communicating using WebSockets (I'm using ColyseusJS library). Problem is, that everything works fine while I'm testing them on localhost but when I deploy the application to my Ubuntu VPS server it stops working.
The message I receive in the browser while trying to connect is:
WebSocket connection to 'ws://X.X.X.X:8001/?colyseusid=' failed: Error during WebSocket handshake: net::ERR_CONNECTION_RESET
So it reaches the server (because when server is disabled the message is "Error in connection establishment: net::ERR_CONNECTION_REFUSED") but it looks like it fails on Upgrade connection operation.
What is strange is that I managed to make it work yesterday (don't know how exactly), but had so much mess on my VPS that I decided to revert machine to it's starting state. After that it stopped working (code is unchanged). Maybe there are some additional dependencies that I need to install in order to make it work on my Ubuntu Server?
I would really appreciate your help.
Have you tried to port forward the port to the ip address of the said VPS in your router config? And also check out the firewalls.

Could not proxy request from localhost:3000 to localhost:7000 ReactJs

I provided an api to my react app, it was working fine, but suddenly it stopped working.
in my client (React app) package.json
"proxy": "http://localhost:7000"
now it tell me this error message:
Could not proxy request /api/users/signup from localhost:3000 to http://localhost:7000.
thanks in advance.
Maybe you created a socket and didn't free the port afterwards ? This may happen if your app crashes. When you launch it again, the port may be occupied and unavailable, it happened to me a few times.

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