diff --git a/runtime/internal/flow/conn/grpc/conn.go b/runtime/internal/flow/conn/grpc/conn.go
index 90f6290..5cbd6f3 100644
--- a/runtime/internal/flow/conn/grpc/conn.go
+++ b/runtime/internal/flow/conn/grpc/conn.go
@@ -43,6 +43,7 @@
 	log.Printf("Beginning to Read.\n")
 	resBuf := make([]byte, 4096*4096) // TODO better (dynamic) size or way of reading?
 	bytesRead, err := c.rawConn.Read(resBuf)
+	log.Printf("Read %d bytes.\n", bytesRead)
 	if err != nil {
 		log.Printf("Failed to read.\n")
 		log.Fatal(err)
@@ -73,6 +74,7 @@
 	out := box.SealAfterPrecomputation(nil, b, c.currentNonce(), c.sharedKey)
 	c.advanceNonce()
 	bytesCopied, err := io.Copy(c.rawConn, bytes.NewReader(out))
+	log.Printf("Wrote %d bytes.\n", bytesCopied)
 	if err != nil {
 		log.Printf("Failed to copy to rawConn.\n")
 		log.Fatal(err)