我看到文档中介绍使用搜索：
wx.startLocalServiceDiscovery({ // 当前手机所连的局域网下有一个 _http._tcp. 类型的服务 serviceType: '_http._tcp.', success: console.log, fail: console.log})我想问下 serviceType 目前只支持这一种吗？
不支持像DLNA 这样的 serviceType 吗


urn:schemas-upnp-org:service:AVTransport:1
urn:upnp-org:serviceId:AVTransport
/AVTransport//scpd.xml
/AVTransport//control.xml
/AVTransport//event.xml


urn:schemas-upnp-org:service:ConnectionManager:1
urn:upnp-org:serviceId:ConnectionManager
/ConnectionManager//scpd.xml
/ConnectionManager//control.xml
/ConnectionManager//event.xml


urn:schemas-upnp-org:service:RenderingControl:1
urn:upnp-org:serviceId:RenderingControl
/RenderingControl//scpd.xml
/RenderingControl//control.xml
/RenderingControl//event.xml

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