Function querySrv

querySrv(
    hostname: string,
    servers?: readonly IpAddress[],
    timeout?: undefined | ReadonlyValue<Time>,
): Promise<Dns.SrvRecord[]>
查询服务发现记录（如 _service._tcp.domain）；失败返回空数组。
Parameters
- hostname: string
- servers: readonly IpAddress[] = []
- timeout: undefined | ReadonlyValue<Time> = ...
Returns Promise<Dns.SrvRecord[]>
- Defined in src/network/dns.ts:79