Problem with "userinfo" using GET authentication endpoint

[bachwehbi]

This is specific to Socket.io transport.

When using authentication endpoint with GET method, userinfo is not correctly sent to the remote endpoint if it is a JSON object.

userinfo = {name: "somename", nickname: "somenickname"}

In the query part of the GET request we will receive:

....&userinfo=

This seems to be associated with the use of querystring