syntax = "proto3";

package messages;

enum ClientMessageType {
  OUTBOUND_MESSAGE = 0;
  INBOUND_MESSAGE = 1;
  RECEIPT = 2;
}

enum CompressionType {
  COMPRESSION_NONE = 0;
  COMPRESSION_ZLIB = 1;
}

message ClientMessage {
  ClientMessageType message_type = 1;
  bytes message = 2;
  CompressionType compression_type = 3;
}

message OutboundMessage {
  string dest = 1;
  bytes payload = 2;
  repeated string dests = 3;
  uint32 max_holding_seconds = 4;
  uint32 nonce = 5;
  bytes block_hash = 6;
  repeated bytes signatures = 7;
  repeated bytes payloads = 8;
}

message InboundMessage {
  string src = 1;
  bytes payload = 2;
  bytes prev_signature = 3;
}

message Receipt {
  bytes prev_signature = 1;
  bytes signature = 2;
}