发现使用Android NSD的网络中的所有服务

Question

我正在尝试使用以下方法查找网络中的所有服务：

```

mNsdManager.discoverServices(
            SERVICE_TYPE, NsdManager.PROTOCOL_DNS_SD, mDiscoveryListener);

但是您必须定义SERVICE_TYPE，例如：

public static final String SERVICE_TYPE = "_http._tcp.";

因此，它将使用TCP发现所有HTTP服务，但同时不会找到HTTPS服务或任何其他类型的服务。

我该如何设置才能查找使用TCP的任何服务？

谢谢您提前。

- user1576396

Answer 1

我正在使用

private static final String SERVICE_TYPE = "_services._dns-sd._udp";

这会给我一个列出局域网上所有可用服务的列表：

D/MHC-NSD: Service discovery found: name: _workstation, type: _tcp.local., host: null, port: 0
D/MHC-NSD: Service discovery found: name: _UnoWiFi, type: _tcp.local., host: null, port: 0
D/MHC-NSD: Service discovery found: name: _udisks-ssh, type: _tcp.local., host: null, port: 0
D/MHC-NSD: Service discovery found: name: _airplay, type: _tcp.local., host: null, port: 0
D/MHC-NSD: Service discovery found: name: _raop, type: _tcp.local., host: null, port: 0
D/MHC-NSD: Service discovery found: name: _xbmc-events, type: _udp.local., host: null, port: 0
D/MHC-NSD: Service discovery found: name: _xbmc-jsonrpc, type: _tcp.local., host: null, port: 0
D/MHC-NSD: Service discovery found: name: _xbmc-jsonrpc-h, type: _tcp.local., host: null, port: 0
D/MHC-NSD: Service discovery found: name: _http, type: _tcp.local., host: null, port: 0
D/MHC-NSD: Service discovery found: name: _sftp-ssh, type: _tcp.local., host: null, port: 0
D/MHC-NSD: Service discovery found: name: _ssh, type: _tcp.local., host: null, port: 0
D/MHC-NSD: Service discovery found: name: _arduino, type: _tcp.local., host: null, port: 0

- BeeGee1962