package rawlink-eio

You can search for identifiers within the package.

in-package search v0.2.0

rawlink-eio
- CHANGES
- LICENSE
- README
- Library rawlink-eio
  - Eio_rawlink
- Sources
  - rawlink-eio
    
    eio_rawlink.ml

Legend:
Page
Library
Module
Module type
Parameter
Class
Class type
Source

Module `Eio_rawlink`Source

A portable API to send and receive raw packets.

There are times when one needs to construct the full ethernet frame to send/receive. Most unixes support BPF (BSD Packet Filter) to achieve it, but linux provides the same functionality via AF_SOCKET. This API works with either a BPF or AF_SOCKET backend, so it should work on every usable UNIX, as well as linux out there.

Sourcetype t

Type of a rawlink.

Source

val open_link : 
  ?filter:string ->
  ?promisc:bool ->
  string ->
  sw:Eio.Switch.t ->
  t

open_link ~filter ~promisc interface sw. Creates a rawlink on the specified interface, a BPF program filter can be passed to filter out incoming packets. If promisc is true, sets interface to promiscuous mode, defaults to false.

Sourceval close_link : t -> unit

close_link. Closes a rawlink.

Sourceval read_packet : t -> Cstruct.t

read_packet t. Reads a full packet, may raise Unix.Unix_error.

Sourceval send_packet : t -> Cstruct.t -> unit

send_packet t. Sends a full packet, may raise Unix.Unix_error.

Sourceval dhcp_server_filter : unit -> string

dhcp_server_filter. Returns a BPF program suitable to be passed in open_link ~filter, it accepts UDP packets destined to port 67 (DHCP server).

Sourceval dhcp_client_filter : unit -> string

dhcp_client_filter. Returns a BPF program suitable to be passed in open_link ~filter, it accepts UDP packets destined to port 68 (DHCP client).

package rawlink-eio

Module Eio_rawlinkSource

Module `Eio_rawlink`Source