message.proto

// from https://github.com/ipfs/go-bitswap/blob/master/message/pb/message.proto
syntax = "proto3";

message Message {

  message Wantlist {
    enum WantType {
      Block = 0;
      Have = 1;
    }

    message Entry {
      bytes block = 1;           // the block cid (cidV0 in bitswap 1.0.0, cidV1 in bitswap 1.1.0)
      int32 priority = 2;        // the priority (normalized). default to 1
      bool cancel = 3;           // whether this revokes an entry
      WantType wantType = 4;     // Note: defaults to enum 0, ie Block
      bool sendDontHave = 5;     // Note: defaults to false
    }

    repeated Entry entries = 1;  // a list of wantlist entries
    bool full = 2;               // whether this is the full wantlist. default to false
  }

  message Block {
    bytes prefix = 1;            // CID prefix (cid version, multicodec and multihash prefix (type + length)
    bytes data = 2;
  }

  enum BlockPresenceType {
    Have = 0;
    DontHave = 1;
  }
  message BlockPresence {
    bytes cid = 1;
    BlockPresenceType type = 2;
  }

  Wantlist wantlist = 1;
  repeated bytes blocks = 2;     // used to send Blocks in bitswap 1.0.0
  repeated Block payload = 3;    // used to send Blocks in bitswap 1.1.0
  repeated BlockPresence blockPresences = 4;
  int32 pendingBytes = 5;
}