#pcap #packet #sockets #send-receive #wpcap #pf-ring


Library for receiving and sending raw packets. While most crate wrap just one library, rawsock allows you to use pcap, wpcap, npcap and pf_ring (pfring) using a consistent API for all of them.

5 unstable releases

0.3.0 Aug 11, 2019
0.2.1 Jul 27, 2019
0.2.0 Jul 14, 2019
0.1.1 Jul 14, 2019
0.1.0 Jul 13, 2019

#28 in #send-receive

MIT license

1.5K SLoC


Travis CI Crates CI Docs


rawsock is a Rust library that highly simplifies use of packet capturing libraries such as pcap, wpcap or pf_ring and also libraries with a compatible API, such as npcap. It can help you to send and receive raw socket frames using one consistent API for all those libraries, so that the internal complexity is hidden.

Main advantage: you write code using one simple API - rawsock. But when your application is run, the best available library on user's machine is chosen and used in the background. Platform-specific extensions (such as WinPcap pcap_sendqueue_transmit()) are also used in optimal way.

Main features

  • One consistent API for all packet capturing libraries.
  • Support of pcap, wpcap (with Windows-specific optimizations), npcap and pfring
  • Supports all main platforms: tested on Windows, Linux, Mac. Many more should work too
  • Libraries are loaded in a dynamic manner, so that the library does not have any direct dependency - it's going to work with whatever is available on the given platform.
  • Libraries are checked in the order of effectiveness. The best found library is loaded.
  • It is also possible to load a specific library when using the rawsock API or directly use the API of the given dynamically loaded library - for more advanced use cases.

Quick example

extern crate rawsock;
use rawsock::open_best_library;

const ICMP_PACKET: [u8; 84] = [
0x45, 0x00, 0x00, 0x54, 0xee, 0x96, 0x40, 0x00, 0x40, 0x01, 0x79, 0xf0, 0xc0, 0xa8, 0x01, 0x6a,
0x08, 0x08, 0x08, 0x08, 0x08, 0x00, 0x2f, 0x08, 0x66, 0xc2, 0x00, 0x12, 0x82, 0xaa, 0xcc, 0x5c,
0x00, 0x00, 0x00, 0x00, 0x51, 0x49, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x11, 0x12, 0x13,
0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23,
0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33,
0x34, 0x35, 0x36, 0x37];

fn main() {

    This example shows automatic choosing of the best underlying library available on your system
    and dynamic dispatch of calls to the right implementation.

    For most applications this is the recommended approach.
    println!("Opening packet capturing library");
    let lib = open_best_library().expect("Could not open any packet capturing library");
    println!("Library opened, version is {}", lib.version());
    let interf_name = "eth0"; //replace with whatever is available on your platform
    println!("Opening the {} interface", interf_name);
    let mut interf = lib.open_interface(&interf_name).expect("Could not open network interface");
    println!("Interface opened, data link: {}", interf.data_link());

    //send some packets
    println!("Sending 5 packets:");
    for i in 0..5{
        println!("Sending ICMP ping packet no {}",i);
        interf.send(&ICMP_PACKET).expect("Could not send packet");

    //receive some packets.
    println!("Receiving 5 packets:");
    for _ in 0..5 {
        let packet = interf.receive().expect("Could not receive packet");
        println!("Received packet: {}", packet);

More advanced examples



rawsock = "0.1"


This is free software licensed under the MIT license.


~65K SLoC