Firefox can't establish connection - websocket and heroku - security

I have problem with websocket connection on heroku.
Not sure where is the problem, because on other browsers it works.
A similar issue was here:
Firefox Websocket security issue
If I understand correctly:
Something related to Heroku and backend is missing regards to security. Only Firefox care about this issue, other browsers not. Probably I can somehow ignore this error on firefox and allow a connection.
Below is the screenshot The connection used to fetch this resource was not secure - what exactly does it mean and how debug what and where is missing here?


After research, the reason for it was proxy on Firefox.
If someone would have a similar issue, please do:
Open the Firefox
Go to about:preferences
Open Network Settings
Configure Proxy Access to the Internet and be sure there is "No proxy"

Related

Problem with OpenSSL on Catalina using node.js [duplicate]

I'm using the node-request module, regularly sending GET requests to a set of URLs and, sometimes, getting the error below on some sites.
Error: 29472:error:140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol:openssl\ssl\s23_clnt.c:683
The problem is that I don't get this error always or always on the some URLs, just sometimes. Also, it can't be ignored with "strictSSL: false".
I have read that this can be related to me sending SSL requests with the wrong protocol (SSLv2, SSLv3, TLS..). But this doesn't explain why it happens irregularly.
Btw, I'm running nodejs on a Win 2008 server.
Any help is appreciated.

You will get such error message when you request HTTPS resource via wrong port, such as 80. So please make sure you specified right port, 443, in the Request options.

This was totally my bad.
I was using standard node http.request on a part of the code which should be sending requests to only http adresses. Seems like the db had a single https address which was queried with a random interval.
Simply, I was trying to send a http request to https.

I got this error because I was using require('https') where I should have been using require('http').

Some of the sites are speaking SSLv2, or at least sending an SSLv2 server-hello, and your client doesn't speak, or isn't configured to speak, SSLv2. You need to make a policy decision here. SSLv2 should have vanished from the face of the earth years ago, and sites that still use it are insecure. However, if you gotta talk to them, you just have to enable it at your end, if you can. I would complain to the site owners though if you can.

I had this problem (403 error for each package) and I found nothing great in the internet to solve it.
My .npmrc file inside my user folder was wrong and misunderstood.
I changed this npmrc line from
proxy=http://XX.XX.XXX.XXX:XXX/
to :
proxy = XX.XX.XXX.XXX:XXXX

var https = require('https');
https.globalAgent.options.secureProtocol = 'SSLv3_method';

I got this error while connecting to Amazon RDS. I checked the server status 50% of CPU usage while it was a development server and no one is using it.
It was working before, and nothing in the connection configuration has changed.
Rebooting the server fixed the issue for me.

So in Short,
vi ~/.proxy_info
export http_proxy=<username>:<password>#<proxy>:8080
export https_proxy=<username>:<password>#<proxy>:8080
source ~/.proxy_info
Hope this helps someone in hurry :)

in my case (the website SSL uses ev curves) the issue with the SSL was solved by adding this option ecdhCurve: 'P-521:P-384:P-256'
request({ url,
agentOptions: { ecdhCurve: 'P-521:P-384:P-256', }
}, (err,res,body) => {
...
JFYI, maybe this will help someone

I got this error, while using it on my rocketchat to communicate with my gitlab via enterprise proxy,
Because, was using the https://:8080 but actually, it worked for http://:8080

Google App Engine - socket.io throws errors before successfully connect

Ok so... For a while web sockets have been implemented in the GAE flex environment.
I've got an app deployed there and everything works "sorta" fine except that sometimes
When Connecting or
After a random disconnect and it tries to reconnect
I get a couple of these errors:
POST https://XXX.appspot.com/socket.io/?EIO=3&transport=polling&t=N00Ml-1&sid=XuKv8-6R2TZrIERGAAAO 400
WebSocket connection to 'wss://XXX.appspot.com/socket.io/?EIO=3&transport=websocket&sid=XuKv8-6R2TZrIERGAAAO' failed: WebSocket is closed before the connection is established
GET https://XXX.appspot.com/socket.io/?EIO=3&transport=polling&t=N00Ml-2&sid=XuKv8-6R2TZrIERGAAAO 400
I've googled a lot and tried a lot of the stuff suggested to people that had similar issues (most of them BEFORE GAE introduced websocket support).
After a couple of these errors it just connects and everything is fine... I've tried forcing transport as websocket on the client side but it doesn't seem to change anything.
Is there any fix? Should i just change cloud provider?
Not posting any code since it's the basic socket.io nodejs implementation, in fact I've tested with an empty basic implementation and it's the same thing, my best guess is they havn't implemented the load balancer correctly? Anybody has these issues? Should i go aws instead?

I managed to fix this... I've posted on the socket.io github issues
https://github.com/socketio/socket.io/issues/3543
And here's a link to a better explanation
https://github.com/socketio/socket.io/issues/3612#issuecomment-656667871

Socket.IO Connection Not working on University Wifi

I have created an chat app using Socket.IO . It works fine on my home internet. But whenever I am at my university and connected to versity wifi internet, I can't get connected at all. Its facing 'net::ERR_CONNECTION_TIMED_OUT' error.
Here is the url: demo.codesamplez.com/ultrachat/demo.html (You will may get it OK, as I do on home)
I guess, this might be some kind of firewall issue or something?
Does anybody has any clue how to go forward for solving this? Thanks in advance.

Switching from HTTP to HTTPS should get around the problem with incompatible proxy server. That forces the proxy to use HTTP tunneling to maintain the connection instead performing whatever magic it does.

Browser, behind Squid, can't establish connection to socket.io websockets transport

My problem is simple to explain but not so simple to fix I think since I haven't found a solution yet.
I'm developing an API. The backend is developed using NodeJs and Socket.Io. Everything works perfect but the issue arises when I'm on a net that's behind a firewall, Squid in this case. It is the browser who is behind the firewall not the server (NodeJs).
The thing is that I get this error:
WebSocket connection to 'ws://mydomain.com/socket.io/1/websocket/vN8hWt_EjV0Z5P5-GwrW' failed: Unexpected response code: 502 (socket.io.js:2)
and I don't know how to the browser can skip Squid.

HTTPS Connection

I am making an application which has j2me in client side and dotnet on server side.
I need to make an https connection to post to and fetch data from the server.
Can anyone help?
I tried searching on the net but i cannot find much on internet about establishing https connection.
Can anyone explain or reccommend a website??

If you had problems finding J2ME HTTPS examples, this is a nice article.
The above link doesn't work any more. Alternative articles:
IBM Developerworks

Possible causes of https not working is because the server does not have a valid certificate. Try catching exceptions in the part where you make the connection.

Resources