启用该功能时，请先启用WebSocket。
public static IApplicationBuilder UseWebSocketDmtp(
this IApplicationBuilder builder,
string url = "/websocketdmtp"
)<ExtensionAttribute>
Public Shared Function UseWebSocketDmtp (
builder As IApplicationBuilder,
Optional url As String = "/websocketdmtp"
) As IApplicationBuilder[<ExtensionAttribute>]
static member UseWebSocketDmtp :
builder : IApplicationBuilder *
?url : string
(* Defaults:
let _url = defaultArg url "/websocketdmtp"
*)
-> IApplicationBuilder