moving to map of headers

Author: minond

lib/protobuf/rpc/rpc.pb.rb

@@ -32,6 +32,7 @@ class ErrorReason < ::Protobuf::Enum
     class Request < ::Protobuf::Message; end
     class Response < ::Protobuf::Message; end
     class Trace < ::Protobuf::Message; end
+    class MapEntry < ::Protobuf::Message; end
 
 
     ##
@@ -56,8 +57,12 @@ class Response
     end
 
     class Trace
-      optional :string, :type, 1
-      optional :bytes, :raw, 2
+      repeated ::Protobuf::Socketrpc::MapEntry, :headers, 1
+    end
+
+    class MapEntry
+      optional :string, :key, 1
+      optional :string, :value, 2
     end
 
   end

proto/rpc.proto

@@ -48,8 +48,12 @@ message Response
 }
 
 message Trace {
-  optional string type = 1;
-  optional bytes raw = 2;
+  repeated MapEntry headers = 1;
+}
+
+message MapEntry {
+  optional string key = 1;
+  optional string value = 2;
 }
 
 // Possible error reasons