package mirage-protocols

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Module type `Mirage_protocols.ICMP`Source

Internet Control Message Protocol: error messages and operational information.

Sourcetype t

The type representing the internal state of the ICMP layer.

Sourceval disconnect : t -> unit Lwt.t

Disconnect from the ICMP layer. While this might take some time to complete, it can never result in an error.

Sourcetype ipaddr

The type for IP addresses.

Sourcetype error

The type for ICMP errors.

Sourceval pp_error : error Fmt.t

pp_error is the pretty-printer for errors.

Sourceval input : t -> src:ipaddr -> dst:ipaddr -> Cstruct.t -> unit Lwt.t

input t src dst buffer reacts to the ICMP message in buffer.

val write : 
  t ->
  ?src:ipaddr ->
  dst:ipaddr ->
  ?ttl:int ->
  Cstruct.t ->
  (unit, error) result Lwt.t

write t ~src ~dst ~ttl buffer sends the ICMP message in buffer to dst over IP. Passes the time-to-live (ttl) to the IP stack if given.