1 files changed, 27 insertions, 0 deletions
diff --git a/libgo/go/net/tcpsockopt_darwin.go b/libgo/go/net/tcpsockopt_darwin.go
new file mode 100644
index 00000000000..33140849c95
--- /dev/null
+++ b/libgo/go/net/tcpsockopt_darwin.go
@@ -0,0 +1,27 @@
+// Copyright 2009 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// TCP socket options for darwin
+
+package net
+
+import (
+	"os"
+	"syscall"
+	"time"
+)
+
+// Set keep alive period.
+func setKeepAlivePeriod(fd *netFD, d time.Duration) error {
+	if err := fd.incref(); err != nil {
+		return err
+	}
+	defer fd.decref()
+
+	// The kernel expects seconds so round to next highest second.
+	d += (time.Second - time.Nanosecond)
+	secs := int(d.Seconds())
+
+	return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(fd.sysfd, syscall.IPPROTO_TCP, syscall.TCP_KEEPALIVE, secs))
+}