X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fsrc%2Fip.c;h=08d32f21b382937f8f4974533e67bc9dc896cf3f;hb=2cee425af0f8c425a410ff12a51f05a175a0c80b;hp=09b4c439e9b2b7f8880df0d3660f4b2f3e637f00;hpb=5903c6ff59527362e869fedb565c56935ce8dd68;p=user%2Fhenk%2Fcode%2Fexim.git

diff --git a/src/src/ip.c b/src/src/ip.c
index 09b4c439e..08d32f21b 100644
--- a/src/src/ip.c
+++ b/src/src/ip.c
@@ -235,14 +235,15 @@ connect in FASTOPEN mode but with zero data.
 
 if (fastopen)
   {
-  if (  (rc = sendto(sock, NULL, 0, MSG_FASTOPEN, s_ptr, s_len)) < 0
-     && errno == EOPNOTSUPP
-     )
-    {
-    DEBUG(D_transport)
-      debug_printf("Tried TCP Fast Open but apparently not enabled by sysctl\n");
-    rc = connect(sock, s_ptr, s_len);
-    }
+  if ((rc = sendto(sock, NULL, 0, MSG_FASTOPEN | MSG_DONTWAIT, s_ptr, s_len)) < 0)
+    if (errno == EINPROGRESS)		/* the expected case */
+      rc = 0;
+    else if(errno == EOPNOTSUPP)
+      {
+      DEBUG(D_transport)
+	debug_printf("Tried TCP Fast Open but apparently not enabled by sysctl\n");
+      rc = connect(sock, s_ptr, s_len);
+      }
   }
 else
 #endif