diff --git a/src/crypto/tls/conn.go b/src/crypto/tls/conn.go
index 969f357834..300e9a233c 100644
--- a/src/crypto/tls/conn.go
+++ b/src/crypto/tls/conn.go
@@ -151,6 +151,13 @@ func (c *Conn) SetWriteDeadline(t time.Time) error {
 	return c.conn.SetWriteDeadline(t)
 }
 
+// NetConn returns the underlying connection that is wrapped by c.
+// Note that writing to or reading from this connection directly will corrupt the
+// TLS session.
+func (c *Conn) NetConn() net.Conn {
+	return c.conn
+}
+
 // A halfConn represents one direction of the record layer
 // connection, either sending or receiving.
 type halfConn struct {