Created: 2011-07-11 20:14
Updated: 2019-01-12 08:20
License: apache-2.0


TravisCI: Build Status

A fork of RockSaw ( that includes Maven support.

Please note that the JNI stuff needs a bit of love to build - the Makefile was mangled (by me/Michael Laccetti).


RockSaw is a simple API for performing network I/O with raw sockets in Java.

IPv6 support was graciously funded by ByteSphere Technologies (

Commercial support is provided by Savarese Software Research Corporation (


The 1.1.0 version of RockSaw has been compiled and tested on Linux, Win32 with Cygwin/MinGW/Winsock or Visual C++, and Mac OS X 10.11.4. It should compile on other POSIX systems using the GNU tool chain.

No binary distributions are presently released; you will have to compile for yourself.

Java 1.8 or greater is required to compile/run.


You must have the JAVA_HOME environment variable set and pointing to the directory where the Java Development Kit is installed. Otherwise, the JNI headers will not be found.

The project requires maven to build; The command mvn clean package should be sufficient to compile the JAR and associated library.

There are very few files in the source tree:

  • src/main/java Java source code
  • src/main/native The C JNI source and Makefile

Note about make

The default Makefile requires GNU make.

Win32: Visual C++ (Outdated Instructions)

To compile using Visual C++, you have to override the default compiler command, make command, and makefile properties: jni.make jni.makefile

You can override these on the command line or in For example, to compile using Visual C++, you would use the following command:

ant -Djni.make=nmake -Djni.makefile=Makefile.win32 jar

Make sure your JDK_HOME environment variable is set and that you've run either the vcvars.bat or vsvars32.bat command (depending on the version of Visual C++ you're using) to set your paths for the command line tools.

Mac OS X

Be sure to set JAVA_HOME to the right location. It will typically be something like /Library/Java/JavaVirtualMachines/jdk1.8.0_66.jdk/Contents/Home.

export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_66.jdk/Contents/Home
mvn clean pacakge


RockSaw is Copyright 2004-2007 by Daniel F. Savarese Copyright 2007-2009 by Savarese Software Research Corporation and licensed under the Apache License 2.0 as described in the files:



On most operating systems, you must have root access or administrative privileges to use raw sockets. If you are running a firewall, you will have to make sure it allows ICMP requests through.

The API is minimalist, yet functional. Don't hesitate to submit patches that enhance the functionality.


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