[release/2.8] feat: Add HTTP2 for unencrypted HTTP (v2)

configuration/configuration.go

@@ -157,6 +157,12 @@ type Configuration struct {
 			// to connect via http2. If set to true, only http/1.1 is supported.
 			Disabled bool `yaml:"disabled,omitempty"`
 		} `yaml:"http2,omitempty"`
+
+		H2C struct {
+			// Enables H2C (unencrypted HTTP2). Enable to support HTTP2 without needing to configure TLS
+			// Useful when deploying the registry behind a load balancer (e.g. Cloud Run)
+			Enabled bool `yaml:"enabled,omitempty"`
+		} `yaml:"h2c,omitempty"`
 	} `yaml:"http,omitempty"`
 
 	// Notifications specifies configuration about various endpoint to which

configuration/configuration_test.go

@@ -105,6 +105,9 @@ var configStruct = Configuration{
 		HTTP2 struct {
 			Disabled bool `yaml:"disabled,omitempty"`
 		} `yaml:"http2,omitempty"`
+		H2C struct {
+			Enabled bool `yaml:"enabled,omitempty"`
+		} `yaml:"h2c,omitempty"`
 	}{
 		TLS: struct {
 			Certificate  string   `yaml:"certificate,omitempty"`
@@ -128,6 +131,11 @@ var configStruct = Configuration{
 		}{
 			Disabled: false,
 		},
+		H2C: struct {
+			Enabled bool `yaml:"enabled,omitempty"`
+		}{
+			Enabled: true,
+		},
 	},
 }
 

registry/registry.go

@@ -15,6 +15,9 @@ import (
 
 	"rsc.io/letsencrypt"
 
+	"golang.org/x/net/http2"
+	"golang.org/x/net/http2/h2c"
+
 	logrus_bugsnag "github.com/Shopify/logrus-bugsnag"
 
 	logstash "github.com/bshuster-repo/logrus-logstash-hook"
@@ -170,8 +173,13 @@ func NewRegistry(ctx context.Context, config *configuration.Configuration) (*Reg
 		handler = gorhandlers.CombinedLoggingHandler(os.Stdout, handler)
 	}
 
+	httpHandler := handler
+	if config.HTTP.H2C.Enabled {
+		httpHandler = h2c.NewHandler(handler, &http2.Server{})
+	}
+
 	server := &http.Server{
-		Handler: handler,
+		Handler: httpHandler,
 	}
 
 	return &Registry{

vendor.conf

@@ -37,8 +37,8 @@ github.com/yvasiyarov/go-metrics 57bccd1ccd43f94bb17fdd8bf3007059b802f85e
 github.com/yvasiyarov/gorelic a9bba5b9ab508a086f9a12b8c51fab68478e2128
 github.com/yvasiyarov/newrelic_platform_go b21fdbd4370f3717f3bbd2bf41c223bc273068e6
 golang.org/x/crypto c10c31b5e94b6f7a0283272dc2bb27163dcea24b
-golang.org/x/net b225e7ca6dde1ef5a5ae5ce922861bda011cfabd # v0.17.0
-golang.org/x/text f488e191e67ed95a5b9b7b39024e5a5f5f1ffd02 # v0.13.0
+golang.org/x/net a8e0109124268a0a063b5900bce0c2b33398ec01 # v0.19.0
+golang.org/x/text 6c97a165dd661335ff7bce6104a008558123c353 # v0.14.0
 golang.org/x/oauth2 045497edb6234273d67dbc25da3f2ddbc4c4cacf
 golang.org/x/time a4bde12657593d5e90d0533a3e4fd95e635124cb
 google.golang.org/api 9bf6e6e569ff057f75d9604a46c52928f17d2b54