From f203c2cddfe24b21f8343d989c86db68bf3872aa Mon Sep 17 00:00:00 2001
From: Johannes Kohnen <wjkohnen@users.noreply.github.com>
Date: Fri, 23 Mar 2018 01:47:51 +0100
Subject: [PATCH] Flag to override server name when validating TLS cert (#20)

---
 cmd/grpcurl/grpcurl.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/cmd/grpcurl/grpcurl.go b/cmd/grpcurl/grpcurl.go
index 37c5c44..7500655 100644
--- a/cmd/grpcurl/grpcurl.go
+++ b/cmd/grpcurl/grpcurl.go
@@ -76,6 +76,7 @@ var (
 		`When describing messages, show a JSON template for the message type.`)
 	verbose = flag.Bool("v", false,
 		`Enable verbose output.`)
+	serverName = flag.String("servername", "", "Override servername when validating TLS certificate.")
 )
 
 func init() {
@@ -233,6 +234,9 @@ func main() {
 			if err != nil {
 				fail(err, "Failed to configure transport credentials")
 			}
+			if *serverName != "" {
+				creds.OverrideServerName(*serverName)
+			}
 		}
 		cc, err := grpcurl.BlockingDial(ctx, target, creds, opts...)
 		if err != nil {