From 62cc58a2589b136176d4bb49ba19cab7fa76f8f8 Mon Sep 17 00:00:00 2001
From: Laurent Bercot <ska-skaware@skarnet.org>
Date: Fri, 29 Aug 2025 20:54:24 +0000
Subject:  Add socket_tcpdelay

Signed-off-by: Laurent Bercot <ska@appnovation.com>
---
 src/include/skalibs/socket.h      |  1 +
 src/libstddjb/socket_tcpdelay.c   | 15 +++++++++++++++
 src/libstddjb/socket_tcpnodelay.c |  4 ++--
 3 files changed, 18 insertions(+), 2 deletions(-)
 create mode 100644 src/libstddjb/socket_tcpdelay.c

(limited to 'src')

diff --git a/src/include/skalibs/socket.h b/src/include/skalibs/socket.h
index f13b2ee..944fdd0 100644
--- a/src/include/skalibs/socket.h
+++ b/src/include/skalibs/socket.h
@@ -156,6 +156,7 @@ extern int socket_remote6 (int, char *, uint16_t *) ;
 
 extern int socket_ipoptionskill (int) ;
 extern int socket_tcpnodelay (int) ;
+extern int socket_tcpdelay (int) ;
 extern void socket_tryreservein (int, unsigned int) ;
 
 
diff --git a/src/libstddjb/socket_tcpdelay.c b/src/libstddjb/socket_tcpdelay.c
new file mode 100644
index 0000000..8f1c026
--- /dev/null
+++ b/src/libstddjb/socket_tcpdelay.c
@@ -0,0 +1,15 @@
+/* ISC license. */
+
+#include <skalibs/nonposix.h>
+
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+
+#include <skalibs/socket.h>
+
+int socket_tcpdelay (int s)
+{
+  static int const val = 0 ;
+  return setsockopt(s, IPPROTO_TCP, TCP_NODELAY, &val, sizeof(int)) ;
+}
diff --git a/src/libstddjb/socket_tcpnodelay.c b/src/libstddjb/socket_tcpnodelay.c
index 5ea10b0..8880af4 100644
--- a/src/libstddjb/socket_tcpnodelay.c
+++ b/src/libstddjb/socket_tcpnodelay.c
@@ -10,6 +10,6 @@
 
 int socket_tcpnodelay (int s)
 {
-  static int const opt = TCP_NODELAY ;
-  return setsockopt(s, IPPROTO_TCP, 1, &opt, sizeof(int)) ;
+  static int const val = 1 ;
+  return setsockopt(s, IPPROTO_TCP, TCP_NODELAY, &val, sizeof(int)) ;
 }
-- 
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