Failed to connect to '<address>': null

[AntonKosov]

Library version: 2.9 OS: Android 7.1.2

Sometimes, I've got the following error when try to connect:

Failed to connect to '<address>': null

I have no idea what's going on. Here is my code:

webSocket = WebSocketFactory()
    .setConnectionTimeout(5000)
    .createSocket(uri)
    .addListener(WebSocketCallbacks())
    .connect()

Maybe, it would be nice to write more information if there is null in the exception message (SocketConnector:124).

[ValeriiVolkov]

Facing the same issue