diff --git a/connection.go b/connection.go
index 11f6fe9..005d734 100644
--- a/connection.go
+++ b/connection.go
@@ -1,5 +1,6 @@
 package hopp
 
+import "io"
 import "net"
 // import "time"
 
@@ -43,4 +44,7 @@ type Trans interface {
 	Send(method uint16, data []byte) error
 	// Receive receives a message.
 	Receive() (method uint16, data []byte, err error)
+	// ReceiveReader receives a message as an [io.Reader]. Any reader
+	// previously opened through this function will be discarded.
+	ReceiveReader() (method uint16, size int64, data io.Reader, err error)
 }