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Module Cidr

A representation of CIDR netmasks (e.g. "192.168.0.0/24") and functions to match if a given address is inside the range or not. Only IPv4 addresses are supported. Values are always normalized so the base address is the lowest IP address in the range, so for example to_string (of_string "192.168.1.101/24") = "192.168.1.0/24".

Signature

type t
val __bin_read_t__ : (int -> t) Core_kernel.Std.Bin_prot.Read.reader
val t_of_sexp : Sexplib.Sexp.t -> t
val sexp_of_t : t -> Sexplib.Sexp.t
include Core_kernel.Std.Identifiable.S with type t := t
type t
val t_of_sexp : Sexplib.Sexp.t -> t
val sexp_of_t : t -> Sexplib.Sexp.t
val bin_t : t Bin_prot.Type_class.t
val bin_read_t : t Bin_prot.Read.reader
val __bin_read_t__ : (int -> t) Bin_prot.Read.reader
val bin_reader_t : t Bin_prot.Type_class.reader
val bin_size_t : t Bin_prot.Size.sizer
val bin_write_t : t Bin_prot.Write.writer
val bin_writer_t : t Bin_prot.Type_class.writer
include Core_kernel.Stringable.S with type t := t
type t
val of_string : string -> t
val to_string : t -> string
include Core_kernel.Comparable.S_binable with type t := t
include Comparable_intf.S_common
include Comparable_intf.Polymorphic_compare
include Polymorphic_compare_intf.Infix
type t
val (>=) : t -> t -> bool
val (<=) : t -> t -> bool
val (=) : t -> t -> bool
val (>) : t -> t -> bool
val (<) : t -> t -> bool
val (<>) : t -> t -> bool
val equal : t -> t -> bool
val compare : t -> t -> int
val min : t -> t -> t
val max : t -> t -> t
val ascending : t -> t -> int

ascending is identical to compare. descending x y = ascending y x. These are intended to be mnemonic when used like List.sort ~cmp:ascending and List.sort ~cmp:descending, since they cause the list to be sorted in ascending or descending order, respectively.

val descending : t -> t -> int
val between : t -> low:t -> high:t -> bool
val clamp_exn : t -> min:t -> max:t -> t

clamp_exn t ~min ~max returns t', the closest value to t such that between t' ~low:min ~high:max is true.

Raises if not (min <= max).

val clamp : t -> min:t -> max:t -> t Or_error.t
include Comparator.S with type t := t
type t
type comparator_witness
include Comparable_intf.Validate with type t := t
type t
val validate_lbound : min:t Maybe_bound.t -> t Validate.check
val validate_ubound : max:t Maybe_bound.t -> t Validate.check
val validate_bound : min:t Maybe_bound.t -> max:t Maybe_bound.t -> t Validate.check
include Comparable_intf.Map_and_set_binable with type t := t with type comparator_witness := comparator_witness
type t
include Comparator.S with type t := t
type t
type comparator_witness
include Core_kernel.Hashable.S_binable with type t := t
type t
val hash : t -> int
module Table : Hashable.Hashtbl.S_binable with type key = t
include Core_kernel.Pretty_printer.S with type t := t
type t
val pp : Format.formatter -> t -> unit
val create : base_address:Inet_addr.t -> bits:int -> t
val base_address : t -> Inet_addr.t

Accessors.

  • base_address 192.168.0.0/24 = 192.168.0.0
  • bits 192.168.0.0/24 = 24.
val bits : t -> int
val all_matching_addresses : t -> Inet_addr.t Core_kernel.Std.Sequence.t

Generate a sequence of all addresses in the block.

val multicast : t

IPv4 multicast address can be represented by the CIDR prefix 224.0.0.0/4, (i.e. addresses from 224.0.0.0 to 239.255.255.255, inclusive)

val does_match : t -> Inet_addr.t -> bool

Is the given address inside the given Cidr.t? Note that the broadcast and network addresses are considered valid so does_match 10.0.0.0/8 10.0.0.0 is true.

val netmask_of_bits : t -> Inet_addr.t

Return the netmask corresponding to the number of network bits in the CIDR. For example, the netmask for a CIDR with 24 network bits (e.g. 1.2.3.0/24) is 255.255.255.0.