Jörn Hoffmann wrote: >> -----Ursprüngliche Nachricht----- >> Von: Jörn Hoffmann >> Gesendet: Montag, 21. April 2008 14:49 >> An: rtnet-users@lists.sourceforge.net >> Betreff: Re: [RTnet-users] rt_dev_sendto() >> >> >>> Hi Jörn, >>> >>> please don't top-post [1] (I'm already seeing too much of >>> this @work... >>> :->). >>> >>> Jörn Hoffmann wrote: >>>> Thank you Jan! >>>> Because i want to develop against the posix skin, i now >>> added the posix wrapper options >>>> to the linker call (posix.wrappers) and use the function >>> calls without rt_dev prefix. >>>> It works! >>>> Unfortunately a new problem or misunderstanding occured. I >>> want to set a socket to timeout >>>> behaviour for receiving and used ioctl.......argh..... >>> Everytime i tried to ioctl the socket >>>> behaviour, no matter if blocking, nonblocking, timeouting >>> (;)), recvfrom returned with error. >>> >>> What error do you get precisely (this time in errno again)? >>> >>>> If i rt_dev_ioctl the socket it works..hmm. But i've seen, >>> that ioctl ist also wrapped by >>>> Xennomai. Is there something more i've not noticed?? >>> Did you use RTNET_RTIOC_TIMEOUT for setting the timeout? >>> >>> Jan >>> >>> [1] http://en.wikipedia.org/wiki/Top-posting#Top-posting >>> >>> >> Ok. This time no top-posting. Hope thats better now?! >> Oh..Oh...confusion's back again. Yes, i used RTNET_RTIOC_TIMEOUT. >> Although ioctl should be wrapped, it seems i'm switching back >> to plain linux, >> because errno is now again setted by recvfrom(). I got errno=11. >> The returncode of recvfrom() is -1. >> >> Jörn >> > Hmm....I now did it the native way but the problem is the same. As long as > i don't touch the socket via rt_dev_ioctl (using RTNET_RTIOC_TIMEOUT) > i can send and receive udp packets. When i use rt_dev_ioctl with > RTNET_RTIOC_TIMEOUT, > no matter if i set the socket to blocking, nonblocking or timeout, i can't > receive > any message with rt_dev_recv. The function always returned with errorcode -11 > immediately. > Does anybody have any idea??
"Interesting" effect that I didn't came across yet. Could you post your test code (the simpler, the better)? Jan
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