syntax = "proto3";

package net_tunnel;

option go_package = "./pkg/proto";

service TunnelService {
  // 建立控制连接
  rpc Connect(stream Message) returns (stream Message);
}

// 通用消息格式
message Message {
  oneof content {
    ProxyConfigs register_configs = 1;
    ProxyData proxy_data = 2;
    RegisterProxiesError register_proxies_error = 3;
    ProxyError proxy_error = 4;
  }
}

// 代理配置
message ProxyConfigs { map<string, ProxyConfig> configs = 1; }

message ProxyConfig {
  string name = 1;
  ProxyType type = 2;
  string local_ip = 3;
  int32 local_port = 4;
  int32 remote_port = 5;
}

enum ProxyType {
  TCP = 0;
  UDP = 1;
}

// 代理数据
message ProxyData {
  string conn_id = 1;
  ProxyConfig proxy_config = 2;
  bytes data = 3;
}

message RegisterProxiesError {
  ProxyConfig proxy_config = 1;
  string error = 2;
}

message ProxyError {
  ProxyConfig proxy_config = 1;
  string conn_id = 2;
  string error = 3;
}