[Boost-bugs] [Boost C++ Libraries] #2593: asio missing IPPROTO_IPV6 for win2k and older targets

Subject: [Boost-bugs] [Boost C++ Libraries] #2593: asio missing IPPROTO_IPV6 for win2k and older targets
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2008-12-16 05:08:00

#2593: asio missing IPPROTO_IPV6 for win2k and older targets
--------------------------------------------+-------------------------------
 Reporter:  Joey Liaw <joeyliaw_at_[hidden]>  |       Owner:  chris_kohlhoff
     Type:  Bugs                            |      Status:  new           
Milestone:  Boost 1.38.0                    |   Component:  asio          
  Version:  Boost 1.37.0                    |    Severity:  Problem       
 Keywords:  IPPROTO_IPV6                    |  
--------------------------------------------+-------------------------------
 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__)

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/2593>
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