From 480176ba2dec10459b21a1d3baec6b91ac33cc60 Mon Sep 17 00:00:00 2001
From: Christian Schwarz <me@cschwarz.com>
Date: Wed, 12 Aug 2020 21:41:31 +0200
Subject: [PATCH] rpc/dataconn: fix go1.15-discovered recursive Error() method
 impl

rpc/dataconn/dataconn_client.go:69:9: Sprintf format %s with arg e causes recursive Error method call
---
 rpc/dataconn/dataconn_client.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rpc/dataconn/dataconn_client.go b/rpc/dataconn/dataconn_client.go
index 2919df4..6751af2 100644
--- a/rpc/dataconn/dataconn_client.go
+++ b/rpc/dataconn/dataconn_client.go
@@ -66,7 +66,7 @@ type ProtocolError struct {
 }
 
 func (e *ProtocolError) Error() string {
-	return fmt.Sprintf("protocol error: %s", e)
+	return fmt.Sprintf("protocol error: %s", e.cause)
 }
 
 func (c *Client) recv(ctx context.Context, conn *stream.Conn, res proto.Message) error {