github/ZeroTierOne
1
0
Fork 0
mirror of https://github.com/ZeroTier/ZeroTierOne synced 2025-08-14 10:37:33 -07:00
Code Issues Projects Releases Packages Wiki Activity Actions 2

Enable SO_NO_CHECK if available to skip UDP checksum on packet send for slight performance improvement. We do our own cryptographically secure authentication so UDP checksum is worthless.

Browse source
This commit is contained in:
Adam Ierymenko 2015-07-28 10:29:25 -07:00
commit 40d5c79b62
5 changed files with 14 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

2
osdep/Http.cpp
View file

@ -232,7 +232,7 @@ unsigned int Http::_do(
handler.error = false;
handler.done = false;
Phy<HttpPhyHandler *> phy(&handler,true);
Phy<HttpPhyHandler *> phy(&handler,true,true);
bool instantConnect = false;
handler.phy = &phy;

12
osdep/Phy.hpp
View file

@ -144,7 +144,7 @@ private:
fd_set _readfds;
fd_set _writefds;
#if defined(_WIN32) || defined(_WIN64)
fd_set _exceptfds;
fd_set _exceptfds;
#endif
long _nfds;
@ -152,13 +152,15 @@ private:
ZT_PHY_SOCKFD_TYPE _whackSendSocket;
bool _noDelay;
bool _noCheck;
public:
/**
* @param handler Pointer of type HANDLER_PTR_TYPE to handler
* @param noDelay If true, disable TCP NAGLE algorithm on TCP sockets
* @param noCheck If true, attempt to set UDP SO_NO_CHECK option to disable sending checksums
*/
Phy(HANDLER_PTR_TYPE handler,bool noDelay) :
Phy(HANDLER_PTR_TYPE handler,bool noDelay,bool noCheck) :
_handler(handler)
{
FD_ZERO(&_readfds);
@ -202,6 +204,7 @@ public:
_whackReceiveSocket = pipes[0];
_whackSendSocket = pipes[1];
_noDelay = noDelay;
_noCheck = noCheck;
}
~Phy()
@ -296,6 +299,11 @@ public:
#endif
#ifdef IP_MTU_DISCOVER
f = 0; setsockopt(s,IPPROTO_IP,IP_MTU_DISCOVER,&f,sizeof(f));
#endif
#ifdef SO_NO_CHECK
if (_noCheck) {
f = 1; setsockopt(s,SOL_SOCKET,SO_NO_CHECK,(void *)&f,sizeof(f));
}
#endif
}
#endif // Windows or not