Results from long running "stresstest"

Just wanted to share some results from a long running stress test of jnetpcap version 1.3.b3 (beta 3).

jNetPcap 1.3 beta 2 released

New release is available. This is beta 2 release of jnetpcap 1.3. No new features have been added but numerous bugs have been fixed that were found in beta 1.

Download: jnetpcap/1.3/stable

Release overview: jNetPcap 1.3 Overview

What about Analysis, TCP reassembly, etc..

jNetPcap briefly introduced an experimental feature which analyzes (in great detail) various protocols and provides Ip4 and tcp-reassembly services. The feature was deprecated fairly quickly due to some limitations of the existing jNetPcap implementation. Especially at the native level and how information is stored about decoded packet states. The existing memory management of jNetPcap turned out to be inadequate for the task and greatly complicated implementation of this feature.

This is however #1 feature requested and sought after by most users. It is currently being completely rewritten for the next generation of the jNetPcap API in the coming 2.x 1.5 releases. The expected time frame for first release of this feature is in October June of 2011. It will be decoupled from overall jnetpcap dependency and released as a separate module. Of course this module will work in conjunction with jnetpcap, the libpcap java wrapper module.

Dev build 1.4.b0004 released

Latest 1.4 build is released.


  • Lazy packet decoding - allows decoding to be offloaded to another thread
  • JPacketBufferHandler - more efficient packet handler
  • Solaris platform support



1.3 beta 1 released!

1.3b1 is released. Its an update to 1.3 alpha 1 which fixes several discovered issues. The following issues have been resolved:

What do our customers have to say?

Dimentrix recommends jnetpcap as the Java library of choice when reading packets off the network. We have used this library extensively in our flagship "sqlShark" ( and it has performed admirably. Even under tremendous load, the memory usage was low and response time high. We are also very satisfied with the support given to us by Sly Technologies. Their engineers were prompt in resolving any issues, proficient in network programming and level of commitment was at par with any ISO certified organization.

Vikram Roopchand
Dimentrix, Inc.

Posted by wkunes — 2012-04-24
Nice and Easy to use.
Posted by Ian — 2012-03-27
jnetpcap works perfectly, thanks
Posted by DimitrisK
Great, it's interesting.