When the socket has data to be read, process it.
By default this method will call accept() and then decide if Efl.Net.Server_Fd.client_add or Efl.Net.Server_Fd.client_reject must be executed, however it may be replaced with something else, such as in SOCK_DGRAM (UDP) there is no accept(), only recvfrom().
It is called straight from Efl.Loop_Fd "read" event handler and is provided as a method to allow easy extending of the class for various purposes.
Overridden from Efl.Net.Server_Fd.process_incoming_data.
process_incoming_data @protected {}
void efl_net_server_fd_process_incoming_data(Eo *obj);