Signal-Android/library/protobuf/IncomingPushMessageSignal.proto

package textsecure;

option java_package = "org.whispersystems.textsecure.push";
option java_outer_classname = "PushMessageProtos";

message IncomingPushMessageSignal {
  optional uint32 type = 1;
  optional string source = 2;
  optional string relay = 3;
//  repeated string destinations = 4; // No longer supported
  optional uint64 timestamp = 5;
  optional bytes message = 6; // Contains an encrypted PushMessageContent
}

message PushMessageContent {
  message AttachmentPointer {
    optional fixed64 id = 1;
    optional string contentType = 2;
    optional bytes key = 3;
  }

  message GroupContext {
    enum Type {
      UNKNOWN = 0;
      CREATE  = 1;
      MODIFY  = 2;
      DELIVER = 3;
      ADD     = 4;
      QUIT    = 5;
    }
    optional bytes id = 1;
    optional Type type = 2;
    optional string name = 3;
    repeated string members = 4;
    optional AttachmentPointer avatar = 5;
  }

  optional string body = 1;
  repeated AttachmentPointer attachments = 2;
  optional GroupContext group = 3;
}