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Raw packet capturing in JRuby

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The pcap library in the Jruby gem list does not work in JRuby due to C extensions, does anyone know if another library exists for JRuby?

I haven't tried Jpcap, but since it also relies on a C library I am assuming won't work either, or am I wrong about JNI not working in JRuby?

On a side note, I am having a tough time finding a JRuby forum with lots of posters. All there seems to be is IRC and mailing lists, both of which are annoying and messy.
pie sneak
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Mac VI Editor Ruby
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C libraries aren't completely off-limits thanks to FFI.

And I think jpcap should work anyway. My understanding is if it works in Java, it will work in JRuby.
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