From: Julien Andrieux <julien@pantomath.io>
Date: Fri, 6 Oct 2017 08:23:36 +0000 (+0200)
Subject: Add DialOption with metadata on client connection
X-Git-Url: https://git.halfball.org/?a=commitdiff_plain;h=0d9b3b394b90f4ad2fd2270e656f2e46ce4ed3ee;p=demo-grpc.git

Add DialOption with metadata on client connection
---

diff --git a/client/main.go b/client/main.go
index 5df1cdd..d571fef 100644
--- a/client/main.go
+++ b/client/main.go
@@ -9,6 +9,25 @@ import (
 	"google.golang.org/grpc/credentials"
 )
 
+// Authentication holds the login/password
+type Authentication struct {
+	Login    string
+	Password string
+}
+
+// GetRequestMetadata gets the current request metadata
+func (a *Authentication) GetRequestMetadata(context.Context, ...string) (map[string]string, error) {
+	return map[string]string{
+		"login":    a.Login,
+		"password": a.Password,
+	}, nil
+}
+
+// RequireTransportSecurity indicates whether the credentials requires transport security
+func (a *Authentication) RequireTransportSecurity() bool {
+	return true
+}
+
 func main() {
 	var conn *grpc.ClientConn
 
@@ -18,8 +37,14 @@ func main() {
 		log.Fatalf("could not load tls cert: %s", err)
 	}
 
+	// Setup the login/pass
+	auth := Authentication{
+		Login:    "john",
+		Password: "doe",
+	}
+
 	// Initiate a connection with the server
-	conn, err = grpc.Dial("localhost:7777", grpc.WithTransportCredentials(creds))
+	conn, err = grpc.Dial("localhost:7777", grpc.WithTransportCredentials(creds), grpc.WithPerRPCCredentials(&auth))
 	if err != nil {
 		log.Fatalf("did not connect: %s", err)
 	}