chrome/browser/sharing/proto/sharing_message.proto

// Copyright 2019 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

syntax = "proto3";

import "click_to_call_message.proto";
import "shared_clipboard_message.proto";

package chrome_browser_sharing;

// Required in Chrome.
option optimize_for = LITE_RUNTIME;

// Message for sending between devices in Sharing.
message SharingMessage {
  // Identifier of sender. required.
  string sender_guid = 1;

  // Payload of the message, contains one of the messages below. required.
  oneof payload {
    PingMessage ping_message = 2;
    AckMessage ack_message = 3;
    ClickToCallMessage click_to_call_message = 4;
    SharedClipboardMessage shared_clipboard_message = 5;
  }

  // RecipientInfo for responding an AckMessage to the sender. optional.
  RecipientInfo sender_info = 6;

  // The name of the device sending this message. optional.
  string sender_device_name = 7;
}

// Message for pinging the receiver expecting an acknowledgement.
message PingMessage {
  // Intentionally empty.
}

// Message for acknowledging the sender after a non-AckMessage is received.
message AckMessage {
  // required.
  string original_message_id = 1;
}

// Message for data necessary to send an AckMessage to the sender.
message RecipientInfo {
  // FCM registration token of device. required.
  string fcm_token = 1;

  // Subscription public key required for RFC 8291.
  bytes p256dh = 2;

  // Auth secret key required for RFC 8291.
  bytes auth_secret = 3;
}