Merge pull request #10 from lidizheng/upgrade-grpc

Upgrade gRPC to v1.40.0 and Golang version to 1.15+

README.md

@@ -67,7 +67,7 @@ Use "grpcdebug <target address>  [command] --help" for more information about a
 
 ## Installation
 
-Minimum Golang Version 1.12. Official Golang install guide:
+Minimum Golang Version 1.15. Official Golang install guide:
 https://golang.org/doc/install.
 
 You can install the `grpcdebug` tool using command:

go.mod

@@ -1,13 +1,14 @@
 module github.com/grpc-ecosystem/grpcdebug
 
-go 1.12
+go 1.15
 
 require (
 	github.com/dustin/go-humanize v1.0.0
-	github.com/envoyproxy/go-control-plane v0.9.9-0.20210208192213-66ad1e49efae
-	github.com/golang/protobuf v1.4.2
+	github.com/envoyproxy/go-control-plane v0.9.9-0.20210512163311-63b5d3c536b0
+	github.com/golang/protobuf v1.5.2
 	github.com/spf13/cobra v1.1.1
-	google.golang.org/grpc v1.27.0
-	google.golang.org/protobuf v1.23.0
-	gopkg.in/yaml.v2 v2.4.0 // indirect
+	google.golang.org/grpc v1.40.0
+	google.golang.org/grpc/examples v0.0.0-20210921183251-616977cc7974
+	google.golang.org/protobuf v1.27.1
+	gopkg.in/yaml.v2 v2.4.0
 )