> -----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??
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