- stevesk@cvs.openbsd.org 2002/02/24 19:59:42
[channels.c misc.c]
disable Nagle in connect_to() and channel_post_port_listener() (port
forwarding endpoints). the intention is to preserve the on-the-wire
appearance to applications at either end; the applications can then
enable TCP_NODELAY according to their requirements. ok markus@
diff --git a/misc.c b/misc.c
index fbdf408..d34423f 100644
--- a/misc.c
+++ b/misc.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: misc.c,v 1.15 2002/01/24 21:09:25 stevesk Exp $ */
+/* $OpenBSD: misc.c,v 1.16 2002/02/24 19:59:42 stevesk Exp $ */
/*
* Copyright (c) 2000 Markus Friedl. All rights reserved.
@@ -25,7 +25,7 @@
*/
#include "includes.h"
-RCSID("$OpenBSD: misc.c,v 1.15 2002/01/24 21:09:25 stevesk Exp $");
+RCSID("$OpenBSD: misc.c,v 1.16 2002/02/24 19:59:42 stevesk Exp $");
#include "misc.h"
#include "log.h"
@@ -96,10 +96,20 @@
void
set_nodelay(int fd)
{
- int on = 1;
+ int opt, optlen;
+ optlen = sizeof opt;
+ if (getsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &opt, &optlen) == -1) {
+ error("getsockopt TCP_NODELAY: %.100s", strerror(errno));
+ return;
+ }
+ if (opt == 1) {
+ debug2("fd %d is TCP_NODELAY", fd);
+ return;
+ }
+ opt = 1;
debug("fd %d setting TCP_NODELAY", fd);
- if (setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &on, sizeof on) == -1)
+ if (setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &opt, sizeof opt) == -1)
error("setsockopt TCP_NODELAY: %.100s", strerror(errno));
}