Hi, the break came from finding and reading "Unix Network Programming" by Stevens/Fenner/Rudoff. (-;
Am 14.02.2013 um 11:37 schrieb Fredrik Unger: > From the top of my head I find it strange that just 3 bytes was received. > If I remember correctly my tests sent more (with sendmsg). I think, the reason is, that *no* ancillary data is being sent: --- recvmsg entered. recvmsg: fd 0x1b[4] flags 0x0 result 0x1 return from recvmsg recvmsg entered. recvmsg: fd 0x19[4] flags 0x0 result 0x1 return from recvmsg sendmsg entered. sendmsg got: fd: 0x18, iov: 0xffffab90, ancillary: 0x0, sendmsg: fd 0x18[4] flags 0x0 message_header 0xffffa98f return from sendmsg with sendmsg entered. sendmsg got: fd: 0x1a, iov: 0xffffab90, ancillary: 0x0, sendmsg: fd 0x1a[4] flags 0x0 message_header 0xffffa98f return from sendmsg with --- Without ancillary data, no fd can be shipped. The only place where ancillary data could be provided seems to be twext.internet.sendfdport._SubprocessSocket.doWrite. I would be happy for any hint where to dig... Axel PS: sendmsg.c seems to be very fragile as debug code changes behaviour of the system (i.e. it locks up after trying a http connect and does not reach point of original exception) --- PGP-Key:29E99DD6 ☀ +49 151 2300 9283 ☀ computing @ chaos claudius _______________________________________________ calendarserver-dev mailing list calendarserver-dev@lists.macosforge.org https://lists.macosforge.org/mailman/listinfo/calendarserver-dev
