What's with the second parameter in bind()?

  The man page shows it as "struct sockaddr *my_addr".  The sockaddr
  struct though is just a place holder for the structure it really
  wants.  You have to pass different structures depending on what kind
  of socket you have.  For an AF_INET socket, you need the sockaddr_in
  structure.  It has three fields of interest:

     sin_family
        Set this to AF_INET.

     sin_port
        The network byte-ordered 16 bit port number

     sin_addr
        The host's ip number.  This is a struct in_addr, which contains
        only one field, s_addr which is a u_long.



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