diff --git a/tester/v1/tester.proto b/problem/v1/problem.proto
similarity index 58%
rename from tester/v1/tester.proto
rename to problem/v1/problem.proto
index 5c60e6a..9399edb 100644
--- a/tester/v1/tester.proto
+++ b/problem/v1/problem.proto
@@ -1,15 +1,15 @@
 syntax = "proto3";
 
-package tester.v1;
-option go_package = "/tester/v1;testerv1";
+package problem.v1;
+option go_package = "/problem/v1;problemv1";
 
 import "google/protobuf/timestamp.proto";
 import "google/protobuf/empty.proto";
 
-service TesterService {
-  rpc CreateProblem (CreateProblemRequest) returns (CreateProblemResponse);
+service ProblemService {
+  rpc CreateProblem (stream CreateProblemRequest) returns (CreateProblemResponse);
   rpc ReadProblem (ReadProblemRequest) returns (ReadProblemResponse);
-  rpc UpdateProblem (UpdateProblemRequest) returns (google.protobuf.Empty);
+  //  rpc UpdateProblem (UpdateProblemRequest) returns (google.protobuf.Empty);
   rpc DeleteProblem (DeleteProblemRequest) returns (google.protobuf.Empty);
 }
 
@@ -20,8 +20,15 @@ message CreateProblemRequest {
     int32 time_limit = 3;
     int32 memory_limit = 4;
   }
-  string token = 1;
-  Problem problem = 2;
+  message Test {
+    bytes chunk = 1;
+  }
+
+  oneof msg {
+    string token = 1;
+    Problem problem = 2;
+    Test test = 3;
+  }
 }
 message CreateProblemResponse {
   int32 id = 1;
@@ -45,17 +52,17 @@ message ReadProblemResponse {
   Problem problem = 2;
 }
 
-message UpdateProblemRequest {
-  message Problem {
-    int32 id = 1;
-    optional string name = 2;
-    optional string description = 3;
-    optional int32 time_limit = 4;
-    optional int32 memory_limit = 5;
-  }
-  string token = 1;
-  Problem problem = 2;
-}
+//message UpdateProblemRequest {
+//  message Problem {
+//    int32 id = 1;
+//    optional string name = 2;
+//    optional string description = 3;
+//    optional int32 time_limit = 4;
+//    optional int32 memory_limit = 5;
+//  }
+//  string token = 1;
+//  Problem problem = 2;
+//}
 
 message DeleteProblemRequest {
   string token = 1;