OSGI JNA native library pcap not found

Question

I'm using pcap4j in my OSGI project. The devices the application is running on is running openembedded. When I'm running my code in a standalone application (non OSGI) on a device, it works without problem. When running inside an OSGI it doesn't. I embedded the pcap4j dependencies as they are not bundles. The manifest contains the import of com.sun.jna and the bundle jna 4.2.0 is available (and used by another bundle). I also tried by calling System.load and System.loadLibrary...

Answer 1

I've got the same problem too and I made an osgi bundle for pcap4j and its dependents. Here's the jar files in the bundle:

jna-4.2.1.jar, 
pcap4j-core-1.7.3.jar, 
pcap4j-packetfactory-static-1.7.3.jar,
slf4j-api-1.7.12.jar, 
slf4j-nop-1.6.2.jar

The entire MANIFEST.MF file:

Manifest-Version: 1.0
Bundle-ManifestVersion: 2
Bundle-Name: Pcap4j
Bundle-SymbolicName: pcap4j
Bundle-Version: 1.0.0
Bundle-ClassPath: jna-4.2.1.jar, pcap4j-core-1.7.3.jar, pcap4j-packetfactory-static-1.7.3.jar, slf4j-api-1.7.12.jar, slf4j-nop-1.6.2.jar
Export-Package: com.sun.jna,com.sun.jna.ptr,com.sun.jna.win32,org.pcap4j,org.pcap4j.core,org.pcap4j.packet,org.pcap4j.packet.constant,org.pcap4j.packet.factory,org.pcap4j.packet.namednumber,org.pcap4j.util,org.slf4j,org.slf4j.helpers,org.slf4j.impl,org.slf4j.spi
Bundle-RequiredExecutionEnvironment: JavaSE-1.8

After that you can simply use these packages using Import-Package.

Import-Package: org.osgi.framework;version="1.3.0", org.pcap4j.core, org.pcap4j.packet, org.pcap4j.packet.namednumber

Also look at this issue on pcap4j repository to more information.