send binary message to specific address (#222)

* send binary message to specific address

* update naming & update branch

* update address to be an array

* use only peerData

Author: gonpombo8

proto/decentraland/kernel/apis/communications_controller.proto

@@ -8,7 +8,13 @@ message RealSendRequest {
 message RealSendResponse {}
 
 message SendBinaryRequest {
+  repeated bytes data = 1;  // @deprecated old broadcasted messages. Use peerData with an empty array for broadcasting.
+  repeated PeerMessageData peer_data = 2; // peer-to-peer messages
+}
+
+message PeerMessageData {
   repeated bytes data = 1;
+  repeated string address = 2; // if address is empty, its a broadcast message
 }
 
 message SendBinaryResponse {