Create an instance of social user info class. If parameters are null then creates new non-logged-in instance, otherwise, if parameters are set, then connects to network and tries to re-initializes SocialUser info with fresh data from the network (i.e. name, gender etc.) using the supplied net tokens, or throws if tokens are invalid (i.e. expired). This returned instance is usually stored in session for later use

Returns href to login via social system/site

Returns user profile image or null if no image available. Picture kind specifies classification of pictures within profile i.e. "main", "small-icon" etc.

Returns user profile image data along with content type or null if no image available. Picture kind specifies classification of pictures within profile i.e. "main", "small-icon" etc.

Returns social service login URL for "two-stage" login networks. Currently twitter only requires this

Fills user info with values from social network

Post message to social network

Refreshes long term tokens (if provider needs them). Should be used in scenario like background server-side token renew routine

Retrieves all user fields (e.g. screen name, email) but tokens.

Defines if a meeesage can be post to this social network

Specifies how service takes user credentials

Provides social network description, this default implementation returns the name of the class

Globally uniquelly identifies social network architype

Specifies if this provider requires to obtain temporary token before redirecting to social network login page. Currently only Twitter requires this routine

Returns the root public URL for the service