basic envelope type

p2p/conn/connection.go

@@ -724,7 +724,7 @@ type ChannelDescriptor struct {
 	SendQueueCapacity   int
 	RecvBufferCapacity  int
 	RecvMessageCapacity int
-	MessageType         reflect.Type
+	MessageType         proto.Message
 }
 
 func (chDesc ChannelDescriptor) FillDefaults() (filled ChannelDescriptor) {

p2p/types.go

@@ -1,8 +1,14 @@
 package p2p
 
 import (
+	"github.com/cosmos/gogoproto/proto"
 	"github.com/tendermint/tendermint/p2p/conn"
 )
 
 type ChannelDescriptor = conn.ChannelDescriptor
 type ConnectionStatus = conn.ConnectionStatus
+
+type Envelope struct {
+	ChID    byte
+	Message proto.Message
+}