TFO: use IPPROTO_TCP not SOL_TCL for setsockopt, being present on more platforms

[exim.git] / src / src / daemon.c

diff --git a/src/src/daemon.c b/src/src/daemon.c
index dc49eeb85a32770ce98282c7c1539f844c5220cc..3ace7e9dbb5fc3efe8f5d76ce47b31db36069ee4 100644 (file)
--- a/src/src/daemon.c
+++ b/src/src/daemon.c
@@ -1458,10 +1458,9 @@ if (daemon_listen && !inetd_wait_mode)
         debug_printf("listening on %s port %d\n", ipa->address, ipa->port);
 
 #ifdef TCP_FASTOPEN
-    if (setsockopt(listen_sockets[sk], SOL_TCP, TCP_FASTOPEN, &smtp_connect_backlog,
-                   sizeof(smtp_connect_backlog)))
-      log_write(0, LOG_MAIN|LOG_PANIC, "failed to set socket FASTOPEN: %s",
-       strerror(errno));
+    if (setsockopt(listen_sockets[sk], IPPROTO_TCP, TCP_FASTOPEN,
+                   &smtp_connect_backlog, sizeof(smtp_connect_backlog)))
+      DEBUG(D_any) debug_printf("setsockopt FASTOPEN: %s", strerror(errno));
 #endif
 
     /* Start listening on the bound socket, establishing the maximum backlog of