soccer io errors on init()

[SaabirMohamed]

Hi Team

I am having this issue when running the init with base url
my init looks like this
flutterFeathersjs.init(baseUrl: "https://www.mysite.xyz/api/");
I.m initialising the instance from an Oninit() hook in my GetxController

flutter logs this error :
flutter: WebSocketException: Connection to 'https://www.mysite.xyz:0/socket.io/?EIO=3&transport=websocket#' was not upgraded to websocket
Notice the https://www.mysite.xyz**:0** (colon zero at the end of the url...port being added to the url in the error message)
I don't know if this is the problem why ...I am testing my backend and all configs are fine on the backend.

this is my Nginx: (for that block - its all that that's required right?)
location /api {
proxy_set_header X-Forwarded-For $remote_addr;
proxy_set_header Upgrade $http_upgrade;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "Upgrade";
proxy_set_header Host $http_host;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_pass http://localhost:10123;
}

all my restful services work fine via postman only when I use this lib and run this init...I get the socket upgrade issue

can someone please assist (is there something that's appending the :0 at the end of the url?)

[SaabirMohamed]

Resolved:
I tested my project by initialising it using the heroku demo (works perfectly...thanks for making that available)
That made me focus on nginx confs ...after some googling , appears was this line in the config (lowercase "u" proxy_set_header Connection "upgrade";), just tried it as per the stackoverflow suggestion.
I added it as an extra line and added location /socket.io/ as another proxy_pass entry
the error seems to be gone (I'm able to create a test user and authenticate as well)

Maybe this will help someone else who happens to face this issue.

[Dahkenangnon]

Hi @SaabirMohamed

The problem is about your base url
Remove the leading "/" and it will work. Also, you don't need to put the port number (:'0') in the url.

To enable websocket on nginx, use just this in your server block:

proxy_http_version 1.1;
proxy_set_header   Upgrade $http_upgrade;
proxy_set_header   Connection "upgrade";

Your must have:

https://www.mysite.xyz as baseUrl

The "flutter: WebSocketException: Connection to 'https://www.mysite.xyz:0/socket.io/?EIO=3&transport=websocket#' was not upgraded to websocket" mean that flutter_feathersjs cannot reach out the socketio server because the baseUrl is incorrect.

Let me known if this help