This commit cleans up the link_manager interface:
* don't provide peer_addr/port in create_link_manager() (for TCP/SCTP it is not
needed, so in the UDP case in needs to be set explicitly)
* Make FlexRAN connect again (correct hardcoded address)
* Fix FlexRAN: retain the manager pointer
* Fix FlexRAN: store receive_queue pointer
* the link_manager's sender thread passes the correct peer_addr/port for the
UDP case
* unified CU/DU in one PROTO_AGENT instance since they are symmetric from UDP POV
* delete a lot of unnecessary code
* better error handling
* can reciprocally send data
Added selection of interfaces through the configuration file with a new block of statements as follows:
FLEXSPLIT_INTERFACES :
{
DU_INTERFACE_NAME_FOR_F1U = "lo";
DU_IPV4_ADDRESS_FOR_F1U = "127.0.0.1/24";
DU_PORT_FOR_F1U = 2210;
CU_INTERFACE_NAME_FOR_F1U = "lo";
CU_IPV4_ADDRESS_FOR_F1U = "127.0.0.1"; //Address to search the DU
CU_PORT_FOR_F1U = 2210;
// One of TCP/UDP/SCTP
F1_U_TRANSPORT_TYPE = "UDP";
};