syntax = "proto3";

// 基础公共类型定义

message SDLV4Info {
    uint32 port = 1;
    bytes v4 = 2;
    uint32 nat_type = 3;
}

message SDLV6Info {
    uint32 port = 1;
    bytes v6 = 2;
}

// 所有需要建立请求和响应对应关系的，都是通过udp包头部4字节的packetId来对应

// 客户端层面通过token或者账号密码登录, 服务器端不管这个，
// 只是验证凭证是否合法 (access_token)
// 这里修改成了扁平的结构, 否则有些字段不好找放的位置
message SDLRegisterSuper {
    uint32 version = 1;
    string client_id = 2;
    uint32 network_id = 3;
    bytes mac = 4;
    uint32 ip = 5;
    uint32 mask_len = 6;
    string hostname = 7;
    string pub_key = 8;
    string access_token = 9;
}

// 这里修改成了udp的方式，后续需要验证: session_token
message SDLRegisterSuperAck {
    bytes aes_key = 1;
    bytes session_token = 2;
}

// 注册失败时候的消息体
message SDLRegisterSuperNak {
    uint32 error_code = 1;
    string error_message = 2;
}

// 网络地址查询
message SDLQueryInfo {
    uint32 network_id = 1;
    bytes dst_mac = 2;
    bytes session_token = 3;
}

message SDLPeerInfo {
    uint32 network_id = 1;
    bytes dst_mac = 2;
    SDLV4Info v4_info = 3;
    optional SDLV6Info v6_info = 4;
}

// 事件定义, 下面的事件是服务器主动推送的，不需要响应

message SDLNatChangedEvent {
    uint32 network_id = 1;
    bytes mac = 2;
    uint32 ip = 3;
}

// 被清理掉的Endpoints
message SDLDropMacsEvent {
    uint32 network_id = 1;
    repeated bytes mac = 2;
}

message SDLSendRegisterEvent {
    uint32 network_id = 1;
    bytes dst_mac = 2;
    uint32 nat_ip = 3;
    uint32 nat_port = 4;
    uint32 nat_type = 5;
    optional SDLV6Info v6_info = 6;
}

message SDLNetworkShutdownEvent {
    uint32 network_id = 1;
    string message = 2;
}

// UDP通讯消息
message SDLStunRequest {
    string client_id = 1;
    uint32 network_id = 2;
    bytes mac = 3;
    uint32 ip = 4;
    uint32 nat_type = 5;
    optional SDLV6Info v6_info = 6;
    bytes session_token = 7;
}

message SDLData {
    uint32 network_id = 1;
    bytes src_mac = 2;
    bytes dst_mac = 3;
    bool is_p2p = 4;
    uint32 ttl = 5;
    bytes data = 6;
    bytes session_token = 7;
}

// 这个是客户端之间的相互打洞的数据

message SDLRegister {
    uint32 network_id = 1;
    bytes src_mac = 2;
    bytes dst_mac = 3;
}

message SDLRegisterAck {
    uint32 network_id = 1;
    bytes src_mac = 2;
    bytes dst_mac = 3;
}

// 网络类型探测

message SDLStunProbe {
    uint32 cookie = 1;
    uint32 attr = 2;
}

message SDLStunProbeReply {
    uint32 cookie = 1;
    uint32 port = 2;
    uint32 ip = 3;
}

// ARP查询相关

message SDLArpRequest {
    uint32 network_id = 1;
    uint32 target_ip = 2;
    bytes session_token = 3;
}

message SDLArpResponse {
    uint32 network_id = 1;
    uint32 target_ip = 2;
    bytes target_mac = 3;
}