"$sockaddr = 'S n a4 x8'" is a format string for packing a sockaddr struct for passing to bind(2). it reads as follows: basically, this is used to create the C struct byte-by-byte to pass to 'bind(2)'. i'm not a C programmer, so it gets beyond me here. from what i can infer, this struct is 2 bytes for the address family, 2 bytes for the port number, and up to 12 bytes for the address. what you should probably pay attention to are the arguments to pack with that format string. possibly take a look at 'man 2 socket' and its relatives like 'man 2 bind'as well, to determine the signature of the system functions in question. the man pages often describe the byte format of the relevant structs (but unfortunately i can't find sockaddr in the glibc docs).

In reply to Re: Ancient socket.ph Help by mdillon
in thread Ancient socket.ph Help by Maclir

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