const golang.org/x/net/http2.ClientPreface

4 uses

	golang.org/x/net/http2 (current package)
		http2.go#L55: 	ClientPreface = "PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n"
		http2.go#L74: 	clientPreface = []byte(ClientPreface)
		server.go#L1057: 		buf := make([]byte, len(ClientPreface))

	google.golang.org/grpc/internal/transport
		http_util.go#L52: 	clientPreface   = []byte(http2.ClientPreface)