cmd/natc: fix nil pointer

Fixes #13495 Signed-off-by: Fran Bull <fran@tailscale.com>
2 years ago · 8b962f23d1
parent 5f4a4c6744
commit 8b962f23d1
1 changed files with 5 additions and 0 deletions
--- a/cmd/natc/natc.go
+++ b/cmd/natc/natc.go
@ -456,6 +456,11 @@ func (c *connector) ignoreDestination(dstAddrs []netip.Addr) bool {
 }

 func proxyTCPConn(c net.Conn, dest string) {
+	if c.RemoteAddr() == nil {
+		log.Printf("proxyTCPConn: nil RemoteAddr")
+		c.Close()
+		return
+	}
 	addrPortStr := c.LocalAddr().String()
 	_, port, err := net.SplitHostPort(addrPortStr)
 	if err != nil {