id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
2593,asio missing IPPROTO_IPV6 for win2k and older targets,Joey Liaw <joeyliaw@…>,chris_kohlhoff,"When building against Vista SDK headers, if the windows version target _WIN32_WINNT is defined to be 0x0500 (win2k) or less, IPPROTO_IPV6 is not included in the enum in ws2def.h, giving the error:

boost/asio/detail/socket_ops.hpp(407) : error C2065: 'IPPROTO_IPV6' : undeclared identifier

Since this is the only header which references IPPROTO_IPV6, a possible workaround would be to stick at the top of the header:

// When target is Windows 2000 or earlier, Microsoft's ws2def.h does not
// enumerate IPPROTO_IPV6.
#if defined(BOOST_WINDOWS) || defined(__CYGWIN__)
# if defined(_WIN32_WINNT) && (_WIN32_WINNT <= 0x0500)
#   define IPPROTO_IPV6 41
# endif  // _WIN32_WINNT
#endif // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
",Bugs,closed,Boost 1.38.0,asio,Boost 1.37.0,Problem,invalid,IPPROTO_IPV6,