badvpn/protocol/msgproto.bproto

// message for all MsgProto messages
message msg {
    // message type, from msgproto.h
    required uint16 type = 1;
    // message payload. Is itself one of the messages below
    // for "youconnect", "seed" and "confirmseed" messages,
    // and empty for other messages
    required data payload = 2;
};

// "youconnect" message payload
message msg_youconnect {
    // external addresses to try; one or more msg_youconnect_addr messages
    required repeated data addr = 1;
    // encryption key if using UDP and encryption is enabled
    optional data key = 2;
    // password if using TCP
    optional uint64 password = 3;
};

// an external address
message msg_youconnect_addr {
    // scope name for this address
    required data name = 1;
    // address according to AddrProto
    required data addr = 2;
};

// "seed" message payload
message msg_seed {
    // identifier for the seed being send
    required uint16 seed_id = 1;
    // seed encryption key
    required data key = 2;
    // seed IV
    required data iv = 3;
};

// "confirmseed" message payload
message msg_confirmseed {
    // identifier for the seed being confirmed
    required uint16 seed_id = 1;
};