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How to restart during the standard input capture

asked 2018-12-03 17:45:34 +0000

Chasen gravatar image

updated 2018-12-03 17:52:23 +0000

Im a car engineer. I try to capture car CAN protocol msg and use Wireshark to analysis. There is no way to capture directly from car. So I write a demo to test whether it can be imported by stdin. And Its works. But I click restart button, pop up error “Unrecognized libpcap format”. I don't want restart whole program every time. What shall I do, or how could I get signal of restart.

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More details provided over at https://stackoverflow.com/questions/5...

cmaynard gravatar imagecmaynard ( 2018-12-03 21:35:47 +0000 )edit

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answered 2018-12-03 18:11:49 +0000

Jaap gravatar image

Restart from stdin requires the source to send a new libpcap header, which the source cannot do. Therefore the error.

What you could look into is to develop an extcap utility.

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Asked: 2018-12-03 17:45:34 +0000

Seen: 39 times

Last updated: Dec 03