rpc: document ConnEventType constants

diff --git a/rpc/conn.go b/rpc/conn.go
index c59bbd323272b50b150fa5d6671d61bdf022b800..b2bcf28a05025317c729136cc7680579dffcfe36 100644 (file)
--- a/rpc/conn.go
+++ b/rpc/conn.go
@@ -42,10 +42,10 @@ type Conn struct {
 type ConnEventType int
 
 const (
-       _ ConnEventType = iota
-       ConnEventStderr
-       ConnEventDebug
-       ConnEventUpload
+       _               ConnEventType = iota
+       ConnEventStderr               // stderr from spawned process
+       ConnEventDebug                // debug message
+       ConnEventUpload               // remote helper upload in progress
 )
 
 type ConnEvent struct {