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(* $Id: netsockaddr.mli 2195 2015-01-01 12:23:39Z gerd $ *)

(** Parsing of socket addresses *)

type socksymbol =
    [ `Inet of Unix.inet_addr * int
    | `Inet_byname of string * int
    | `Unix of string
    ]
  (** Symbolic socket names:

      - [`Inet(ip,port)]: An internet socket with IP [ip] and the given [port]
      - [`Inet_byname(n,port)]: An internet socket with the IP resulting from
        the resolution of the name [n], and with the given [port]
      - [`Unix p]: A Unix Domain socket with the path [p]

      Use {!Uq_resolver.sockaddr_of_socksymbol} to convert to a 
      [Unix.sockaddr] (and resolve names).
   *)

val socksymbol_of_string : string -> socksymbol
  (** Parses designations of the forms:
      - [<IPv4>:port]
      - [[<IPv4_or_IPv6]:port]
      - [<name>:port]
      - [/path]
      - [./path]

      Raises [Failure] on parse error.
   *)

val string_of_socksymbol : socksymbol -> string
  (** The reverse function *)

val norm_socksymbol : socksymbol -> socksymbol
  (** Normalizes numeric IP addresses: if the address is an IPv4 address mapped
      to the IPv6 address space, the real IPv4 address is returned. This also
      works for numeric addresses in string form, whose writing is also
      normalized.

      E.g.
       - [norm_socksymbol (`Inet_by_name("::ffff:127.0.0.1", 80))] returns
         [`Inet_by_name("127.0.0.1",80)]
       - [norm_socksymbol (`Inet_by_name("0::1",80))] returns
         [`Inet_by_name("::1", 80)]

   *)

val ipv6_socksymbol : socksymbol -> socksymbol
  (** IPv6-ification of numeric IP addresses: IPv4 addresses are mapped to
      the IPv6 address space. This also
      works for numeric addresses in string form, whose writing is also
      normalized.

      E.g.
       - [norm_socksymbol (`Inet_by_name("127.0.0.1", 80))] returns
         [`Inet_by_name("::ffff:127.0.0.1",80)]
       - [norm_socksymbol (`Inet_by_name("0::1",80))] returns
         [`Inet_by_name("::1", 80)]

   *)