IDmtpActorCreateChannelAsync(Metadata, CancellationToken) 方法
            在当前对点创建一个随机Id的通道
            
命名空间: TouchSocket.Dmtp程序集: TouchSocket.Dmtp (在 TouchSocket.Dmtp.dll 中) 版本:4.0.0-beta.143+5fcca7a4e70968794985dc3793adc50531308be6
Task<IDmtpChannel> CreateChannelAsync(
	Metadata metadata = null,
	CancellationToken cancellationToken = default
)
Function CreateChannelAsync ( 
	Optional metadata As Metadata = Nothing,
	Optional cancellationToken As CancellationToken = Nothing
) As Task(Of IDmtpChannel)
abstract CreateChannelAsync : 
        ?metadata : Metadata * 
        ?cancellationToken : CancellationToken 
(* Defaults:
        let _metadata = defaultArg metadata null
        let _cancellationToken = defaultArg cancellationToken new CancellationToken()
*)
-> Task<IDmtpChannel> 
- metadata  Metadata  (Optional)
 - 可选的元数据参数,用于传递额外的信息
 - cancellationToken  CancellationToken  (Optional)
 - 可取消令箭
 
TaskIDmtpChannel返回一个异步任务,该任务完成后将提供创建的IDmtpChannel对象