use Control instead of ControlContext

dialoptions.go

@@ -405,8 +405,8 @@ func WithTimeout(d time.Duration) DialOption {
 // defaults for TCP keepalive time and interval to 15s. To enable TCP keepalive
 // with OS defaults for keepalive time and interval, use a net.Dialer that sets
 // the KeepAlive field to a negative value, and sets the SO_KEEPALIVE socket
-// option to true from the Control or ControlContext field. For a concrete
-// example of how to do this, see internal.NetDialerWithTCPKeepalive().
+// option to true from the Control field. For a concrete example of how to do
+// this, see internal.NetDialerWithTCPKeepalive().
 //
 // For more information, please see [issue 23459] in the Go github repo.
 //

internal/tcp_keepalive.go

@@ -18,7 +18,6 @@
 package internal
 
 import (
-	"context"
 	"net"
 	"syscall"
 	"time"
@@ -42,7 +41,7 @@ func NetDialerWithTCPKeepalive() *net.Dialer {
 		// disabling the overriding of TCP keepalive parameters by setting the
 		// KeepAlive field to a negative value above, results in OS defaults for
 		// the TCP keealive interval and time parameters.
-		ControlContext: func(_ context.Context, _, _ string, c syscall.RawConn) error {
+		Control: func(_, _ string, c syscall.RawConn) error {
 			return c.Control(func(fd uintptr) {
 				syscall.SetsockoptInt(int(fd), syscall.SOL_SOCKET, syscall.SO_KEEPALIVE, 1)
 			})