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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 module mojo.spy_api {
      6 
      7 enum Result {
      8   ALL_OK,
      9   INTERNAL_ERROR,
     10   INVALID_ID,
     11   NO_MORE_IDS,
     12   INVALID_CALL,
     13   INVALID_PARAMS,
     14   BAD_STATE,
     15   RESOURCE_LIMIT
     16 };
     17 
     18 struct Version {
     19   uint32 v_major;
     20   uint32 v_minor;
     21 };
     22 
     23 enum ConnectionOptions {
     24   SKIP,
     25   PAUSE,
     26   RESUME,
     27   PEEK_MESSAGES
     28 };
     29 
     30 struct Message {
     31   uint32 id;
     32   uint32 time;
     33   uint8[]? data;
     34 };
     35 
     36 [Client=SpyClient]
     37 interface SpyServer {
     38   StartSession(Version? version) => (Result result, string? name);
     39   StopSession() => (Result result);
     40   TrackConnection(uint32 id, ConnectionOptions options) => (Result result);
     41 };
     42 
     43 interface SpyClient {
     44   OnFatalError(Result result);
     45   OnSessionEnd(Result result);
     46   OnClientConnection(string? name, uint32 id, ConnectionOptions options);
     47   OnMessage(Message? message);
     48 };
     49 
     50 }
     51