Untested Code

OutgoingMessageSignal.proto

@@ -0,0 +1,29 @@
+/**
+ * Copyright (C) 2013 Open WhisperSystems
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package textsecure;
+
+option java_package = "org.whispersystems.textsecuregcm.entities";
+option java_outer_classname = "MessageProtos";
+
+message OutgoingMessageSignal {
+  optional uint32 type = 1;
+  optional string source = 2;
+  optional string relay = 3;
+  repeated string destinations = 4;
+  optional uint64 timestamp = 5;
+  optional bytes message = 6;
+}