Name

       atalk — AppleTalk protocol family

Synopsis

              #include <sys/types.h>
              #include <netatalk/at.h>

Description

       The  AppleTalk  protocol family is a collection of protocols layered above the Datagram Delivery Protocol
       (DDP), and using  AppleTalk  address  format.  The  AppleTalk  family  may  provide  SOCK_STREAM  (ADSP),
       SOCK_DGRAM  (DDP), SOCK_RDM (ATP), and SOCK_SEQPACKET (ASP). Currently, DDP is implemented in the kernel;
       ATP and ASP are implemented in Netatalk user level libraries.

Addressing

       AppleTalk addresses  are  three  byte  quantities,  stored  in  network  byte  order.  The  include  file
       <netatalk/at.h> defines the AppleTalk address format.

       Sockets in the AppleTalk protocol family use the following address structure:

              struct sockaddr_at {
                  short sat_family;
                  unsigned char sat_port;
                  struct at_addr sat_addr;
                  char sat_zero[ 8 ];
              };

       The  port  of  a  socket  may be set with bind(2). The node for bind must always be ATADDR_ANYNODE: “this
       node.” The net may be  ATADDR_ANYNET  or  ATADDR_LATENET.  ATADDR_ANYNET  corresponds  to  the  machine’s
       “primary”  address  (the  first  configured). ATADDR_LATENET causes the address in outgoing packets to be
       determined when a packet is sent, i.e. determined late.  ATADDR_LATENET  is  equivalent  to  opening  one
       socket  for each network interface. The port of a socket and either the primary address or ATADDR_LATENET
       are returned with getsockname(2).

See Also

       bind(2), getsockname(2), atalkd(8)

Author

       Contributors to the Netatalk Project (https://netatalk.io/contributors)

Netatalk 4.2.3                                                                                          ATALK(4)