connectCallBack
Declaration
static var connectCallBack: CFSocketCallBackType { get }Discussion
If a connection attempt is made in the background by calling CFSocketConnectToAddress(_:_:_:) or CFSocketCreateConnectedToSocketSignature(_:_:_:_:_:_:) with a negative timeout value, this callback type is made when the connect finishes. In this case the data argument is either NULL or a pointer to an SInt32 error code, if the connect failed. This callback will never be sent more than once for a given socket.