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Only set SO_NO_CHECK on IPv4 UDP sockets for now due to broken V6 stacks that drop zero checksum UDP packets.

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This commit is contained in:
Adam Ierymenko 2015-12-09 15:02:42 -08:00
parent 42da36ba81
commit e506fda3e4
1 changed files with 4 additions and 3 deletions
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7
osdep/Phy.hpp
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@ -244,14 +244,12 @@ public:
*/
static inline ZT_PHY_SOCKFD_TYPE getDescriptor(PhySocket *s) throw() { return reinterpret_cast<PhySocketImpl *>(s)->sock; }
/**
* @param s Socket object
* @return Pointer to user object
*/
static inline void** getuptr(PhySocket *s) throw() { return &(reinterpret_cast<PhySocketImpl *>(s)->uptr); }
/**
* Cause poll() to stop waiting immediately
*
@ -384,7 +382,10 @@ public:
f = 0; setsockopt(s,IPPROTO_IP,IP_MTU_DISCOVER,&f,sizeof(f));
#endif
#ifdef SO_NO_CHECK
if (_noCheck) {
// For now at least we only set SO_NO_CHECK on IPv4 sockets since some
// IPv6 stacks incorrectly discard zero checksum packets. May remove
// this restriction later once broken stuff dies more.
if ((localAddress->sa_family == AF_INET)&&(_noCheck)) {
f = 1; setsockopt(s,SOL_SOCKET,SO_NO_CHECK,(void *)&f,sizeof(f));
}
#endif