better guards

[users/jgh/exim.git] / src / OS / os.h-Darwin

diff --git a/src/OS/os.h-Darwin b/src/OS/os.h-Darwin
index 67aeac913727263c3edff597d4f2c61d1cd95a28..7e3a67c4e46aacd44f4e5c09a04501ced876b246 100644 (file)
--- a/src/OS/os.h-Darwin
+++ b/src/OS/os.h-Darwin
@@ -51,10 +51,8 @@ in "man 2 getgroups". */
 #define _DARWIN_UNLIMITED_GETGROUPS
 #define EXIM_GROUPLIST_SIZE 64
 
-/* TCP_FASTOPEN support.  For the moment, claim there is none
-(the probe fails; unsure why).
-Sometime in the future need to investigate connectex(). */
-
-#define EXIM_TFO_PROBE
+/* TCP Fast Open: Darwin uses a connectx() call
+rather than a modified sendto() */
+#define EXIM_TFO_CONNECTX
 
 /* End */