Introduction

Pcap provides a packet processing library for rapid development on top of JVM languages.

Hello Pcap!

"Hello pcap!" implementation in different JVM languages.

Java

var service = Service.Creator.create("PcapService");
try (var pcap = service.live(service.interfaces(), new DefaultLiveOptions())) {
  pcap.loop(10, (args, header, buffer) -> {
    System.out.println("Args     : " + args);
    System.out.println("Header   : " + header);
    System.out.println("Packet   : " + buffer);
  }, "Hello pcap!");
}

Kotlin

val service = Service.Creator.create("PcapService")
val pcap = service.live(service.interfaces(), DefaultLiveOptions())
pcap.loop(10, { args, header, buffer ->
  println("Args     : $args")
  println("Header   : $header")
  println("Packet   : $buffer")
}, "Hello pcap!")
pcap.close()

Scala

val service = Service.Creator.create("PcapService")
val pcap = service.live(service.interfaces(), new DefaultLiveOptions())
pcap.loop(10, (args: String, header: PacketHeader, buffer: PacketBuffer) => {
  println("Args     : ", args)
  println("Header   : ", header)
  println("Packet   : ", buffer)
}, "Hello pcap!")
pcap.close()

Groovy

def service = Service.Creator.create("PcapService")
def pcap = service.live(service.interfaces(), new DefaultLiveOptions())
pcap.loop(10, { args, header, buffer ->
  println("Args     : " + args)
  println("Header   : " + header)
  println("Packet   : " + buffer)
}, "Hello pcap!");
pcap.close()

Clojure

(def service (. Service$Creator (create "PcapService")))
(def pcap (.live service (.interfaces service) (DefaultLiveOptions.)))
(def handler (reify PacketHandler (gotPacket [this args header buffer]
  (println "Args     : " args)
  (println "Header   : " header)
  (println "Buffer    : " buffer))))
(.loop pcap 10 handler "Hello pcap!")
(.close pcap))

JRuby

class Callback
  def gotPacket(args, header, buffer)
    puts "Args     : " + args
    puts "Header   : " + header.toString
    puts "Buffer    : " + buffer.toString
  end
end
service = Service::Creator.create('PcapService')
pcap = service.live(service.interfaces(), DefaultLiveOptions.new)
pcap.loop(10, Callback.new, "Hello pcap!")
pcap.close()

Jython

class Callback(PacketHandler):
  def gotPacket(self, args, hdr, buf):
    print("Args     : ", args)
    print("Header   : ", hdr)
    print("Buffer    : ", buf)
service = DefaultService()
pcap = service.live(service.interfaces(), DefaultLiveOptions())
pcap.loop(10, Callback(), "Hello pcap!")
pcap.close()

Version History

Pcap is using semantic versioning: https://semver.org

Version	Latest Version	Release Date	Latest Release
1.0.0	1.0.7	2020-12-24	2021-03-12
1.2.0	1.2.2	2021-02-01	2021-03-20
1.3.0	1.3.4	2021-05-02	2021-11-15
1.4.0	1.4.2	2021-12-25	2022-09-13

Project Status

Pcap • ardikarsGitHub

Supported platforms

• Linux (Tested)

• Mac OS (Tested)

• Windows (Tested)

• FreeBSD (Tested)

• Other OSes that supported by both Libpcap and JNA (Untested).

Requirements

• Java 7+

• Libpcap for Unix or Npcap for Windows

Java module system with java 9+

Pcap can be used in modular java 9+ applications with specific module name listed below:

• pcap-spi: pcap.spi

• pcap-jdk7: pcap.jdk7

• pcap-common: pcap.common

• pcap-codec: pcap.codec

Disclimers

• Every types, methods, or fields annotated with @Incubating might be changed or removed at any time.

• Every types, methods, or fields annotated with @Incubating does not imply that the functionality being tested.

• Calling the @Restricted method might crash your app if you use it incorrectly. Make sure you know what you're doing with it.