Graphql server - Can't access via IP address url (localhost works fine) - javascript

I would like to link my Expo(React Native) app to local GraphQL backend,
http://localhost:4000/ <- Works fine
http://192.168.X.X:4000/ <- This doesn't work
I do see the Apollo Studio page, but it comes up with the below message:
Unable to reach server
Network requests from Studio on HTTPS to your HTTP endpoint are not secure,
so we cannot introspect your endpoint.

Apollo Studio has a special exception that allows it to communicate with "localhost" over http, but all other endpoints must be over https.
If you (like me) are running virtual machines on your local machine and need to use Apollo Studio, the only solutions are to make the connection https somehow, or forward a port in your host OS so that you can access it via localhost. How to do THAT depends on your OS.


Calling HTTP Node server inside HTTPS instance, SSL error

I'm trying to connect to a inside a Node server from a React client.
Both, the React client and the instance that the Node server is located (it's a microservice, there's also a Java container running there, both within a separated docker container) have https protocols. React client is inside a s3 bucket.
The thing is, Node server is HTTP only, has no certificate, and it's causing the request to the to fail.
The connection happens without any trouble inside de develop EC2, which is not HTTPS, also running normally with localhost.
Cors are enabled.
Is there a way, without having to turn Node serve into HTTPS, to make this requests not return SSL erros?
If not, what is the easiest way to turn it into a HTTPS server to run along with the Java server?
Thanks a lot!
A very short answer. Try using nginx as WebSocket proxy for you server.
Here are couple links:
nginx as WebSocket proxy
SSL configuration to make it an https official configuration

SSL With node / IIS

My current setup with the company i've joined is IIS is being used as our main web server, using a CA signed certificate. I've got access to the certificate.pdx aswell as the private key.
I've setup a https node API server to handle some real time stuff / act as a simple additional middle layer, but my website is being served through IIS. The flow of the application is something like this.
1) Visit web page where IIS will then serve it
2) Click on a button, which then makes a GET request to my node server
E.g > Click Button >
At the minute i'm just using self signed in my development environment, and manually accepting the certificates.
My question is can I just use the same certificate that IIS is using on my node HTTPS server, or do I need a different one?
It would be best if the IIS could proxy the requests to your Node app. That way your Node app wouldn't even need a certificate (if it's on localhost). See this answer for more details:
Configuring HTTPS for Express and Nginx
It uses the example of nginx but you should be able to proxy the requests with IIS as well. See this tutorial:
Setup IIS with URL Rewrite as a reverse proxy for real world apps

nodejs/curl http request is slow compared to postman rest client

I call a Rest API from node.js and Postman-Rest Client (chrome app).
Always using the same computer, same endpoint and same parameters.
In node.js I get ~400ms for http and ~700ms for https.
In Postman I get ~250ms for http and https.
Libraries I used in node.js: http, https, request, kinvey (node client of the api). All of them got the the same result more or less.
Why my node is slower?
node.js 0.10.36
it's not about node, i get the same result with curl.
when running in browser using XMLHttpRequest i get better times.
from analysing the logs I found that TCP connect and SSL handshake takes about 500ms. It may be that TCP connect and SSL handshake works differently in browser.
Here you can find some help.
I am also facing issues with nodejs application server on linux instance. But dont blame nodejs as real issue is in linux systems.
Issue : any outbound request from machine need to find the domain , hence it always lookup the DNS entries & always handshakes with secure/unsecure protocols. This is actually the time taking scenario.
You can verify by doing CURL request.
curl --trace-time -v
Solution : We have to White List IP of outbound server in our own DNS entries. take a look below ...
IN Windows : automatically does the mapping of servers in own dns entries.
IN Linux : We have to manually add the hosts corresponding to IP Address.
Manually add an entry in /etc/hosts file below any configuration like localhost. localhost
Finally check with the curl request again, it should give faster response.
curl --trace-time -v

How can I establish a secure connection to a websocket on localhost?

We have an application which we run on a POS terminal, that should receive data from an application running on the same machine, while displaying content from a remote site which is loaded over HTTPS.
To receive the data from the local application, we want to use websockets, which is working fine so far. However, when the site we're displaying is loaded over HTTPS, the websocket connection is required to be encrypted as well.
Because we can't really get a proper certificate for localhost, we're just using a self-signed one. But Chrome won't connect to a websocket that uses a self-signed certificate.
How can we resolve this problem? We can't use an unencrypted websocket, we can't use a self-signed certificate for the encrypted one and we can't get a signed certificate for localhost. What option am I missing?
If you have admin privileges on the POS terminals, how about adding a line to the HOSTS file like:
Now you can use a real certificate for in the server application.

Node.js on Azure Worker Role w/ SSL results in ERR_SSL_PROTOCOL_ERROR

I have a WorkerRole configured to start node.exe via the Runtime/EntryPoint/ProgramEntryPoint element in the csdef and have a HttpsIn EndPoint configured for https on port 443 w/ a valid certificate. I'm also setting the PORT environment variable in Runtime/Environment which is used by node to listen on for incoming requests.
When I start the service (either in local dev fabric or in Azure) and try to hit the service I get the following error:
SSL connection error
Unable to make a secure connection to the server. This may be a problem with the server, or it may be requiring a client authentication certificate that you don't have.
Error 107 (net::ERR_SSL_PROTOCOL_ERROR): SSL protocol error.
I have verified that node.exe is indeed started when the service starts, and if I look up the local port in the Compute Emulator, usually something like:
I am able to successfully hit node directly with that using my browser. I am also able to hit node through Azure when SSL is not configured.
What am I missing? Thanks!
The issue was that I was using the http module instead of the https module when starting the web server in Node. Works once I started the https server using the ssl certificate.
I was following a guide for SSL w/ Node in a WebRole, which requires a different set up than SSL w/ Node in WorkerRole.