Defer accept on listener

src/main.c

@@ -91,6 +91,9 @@ static void sk_set (int fd, const char *name, const void *val, socklen_t len)
 #endif
 #ifdef TCP_CONGESTION
         { "TCP_CONGESTION", IPPROTO_TCP, TCP_CONGESTION },
+#endif
+#ifdef TCP_DEFER_ACCEPT
+        { "TCP_DEFER_ACCEPT", IPPROTO_TCP, TCP_DEFER_ACCEPT },
 #endif
     };
 
@@ -130,6 +133,8 @@ static int sk_listen (int fd, struct addrinfo *ai)
         return -1;
     }
 
+    sk_set_int(fd, "TCP_DEFER_ACCEPT", GT_TIMEOUT/1000);
+
     return 0;
 }