OMG, finally!

 code, mac, tech  Comments Off on OMG, finally!
Feb 182013
 
OMG, finally!

I’ve waited for a over a decade, but finally – per process packet tracing on the mac (mountain lion.) For example, finding out the traffic that a python script sends via UDP and the return (both python programs on the same machine); the first sends “foo”, the server sends what it got plus “bar”: # dtrace -n ‘syscall::sendto*:entry /execname == "Python"/ { printf("%s sock=%d sockadd=%x buffer[%d]=%s",execname, arg0, arg4, arg2, […]

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