> > The IP man page > > (http://homepages.cwi.nl/~aeb/linux/man2html/man7/ip.7.html) lists > > in_pktinfo as > > > > struct in_pktinfo { > > unsigned int ipi_ifindex; /* Interface index */ > > struct in_addr ipi_spec_dst; /* Local address */ > > struct in_addr ipi_addr; /* Header Destination address */ > > }; > > > > while in /usr/include/cygwin/in.h, it's just > > > > struct in_pktinfo > > { > > struct in_addr ipi_addr; > > uint32_t ipi_ifindex; > > }; > > > > Any suggestions for a workaround to this problem? Why is ipi_spec_dst > > missing, and more to the point, what can/should I substitute in its > > place? > > ipi_spec_dst is missing because the Winsock structure in_pktinfo is > defined without this field. The recvmsg function will return the > Winsock equivalent to this structure, since that's how it gets it from > Windows. The workaround is easy: Don't use that field. Disable the code > in socat which uses it. Even if we would go to great lengths to > add/remove the field when calling WSASendMsg/WSARecvMsg, it would be > entirely meaningless anyway.
OK, thanks to you both. It turns out that socat only uses that field for reporting in one place, so I disabled it as you suggested. socat is great, I'll be packaging it for Cygwin shortly. A. -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
