always disconnected

[bamaarintoko]

cant connect server, always disconnected on react native

[davidgljay]

Also getting this error. Upon inspection it looks like the sid isn't being defined when posting to the server. Here are logs from a successful connection with a browser and an unsuccessful connection from react-native side by side:

172.18.0.1 - - [2018-08-24 06:08:41] "POST /socket.io/?EIO=3&transport=polling&t=MLgZ95J HTTP/1.1" 400 212 0.000484
172.18.0.1 - - [2018-08-24 06:08:41] "POST /socket.io/?EIO=3&transport=polling&t=MLgZ95_&sid=6726ec57841b4dff8c461c4f94b185dd HTTP/1.1" 200 200 0.000913

I get the same behavior when transport=['websockets']
Not that sid is undefined in react native, leading to a 400 error.

[maykl4iv]

Do you guys find any solution?
I can not connect to the server. Do not have any error. Any idea how I can get some logs, or maybe connect to server?

[darrachequesne]

For future readers, please check https://socket.io/docs/v3/troubleshooting-connection-issues/

See also: https://github.com/socketio/socket.io/tree/master/examples/react-native