wcf 回调

最新推荐文章于 2023-02-03 16:30:10 发布

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最新推荐文章于 2023-02-03 16:30:10 发布

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分类专栏： wcf 文章标签： wcf binding callback string interface class

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本文介绍了一个Windows Communication Foundation (WCF)双向通信的示例，包括服务端和服务客户端的具体实现方式。通过定义接口和使用回调机制实现了服务端与客户端之间的交互。

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server：

interface IMyCallbackContract

{
[OperationContract(IsOneWay=true)]
void OnCallback(string info);
}

[ServiceContract(CallbackContract=typeof(IMyCallbackContract))]
public interface IMyWCFService
{
[OperationContract]
void DoWork(string info);

}

public class MyWCFService : IMyWCFService
{
public void DoWork(string info)
{
Console.WriteLine();
Console.WriteLine("服务对象{0}响应{1}客户端请求……",this.GetHashCode(),info);
Console.WriteLine("回调客户端{0}……",info);
IMyCallbackContract callback = OperationContext.Current.GetCallbackChannel<IMyCallbackContract>();
callback.OnCallback(this.GetHashCode().ToString());
Console.WriteLine("回调结束。");
Console.WriteLine("客户{0}的请求处理结束",info);
}
}

client：

class Program
{
static void Main(string[] args)
{
MyCallBack callback = new MyCallBack();
InstanceContext context = new InstanceContext(callback);
NetTcpBinding binding = new NetTcpBinding();
EndpointAddress ep = new EndpointAddress("net.tcp://localhost:4002/MyWCFService");
DuplexChannelFactory<IMyWCFService> factory = new DuplexChannelFactory<IMyWCFService>(context, binding, ep);
IMyWCFService channel = factory.CreateChannel();
channel.DoWork(callback.GetHashCode().ToString());
(channel as IClientChannel).Close();
Console.ReadKey();
}
}

class MyCallBack : IMyCallbackContract
{
public void OnCallback(string info)
{
Console.WriteLine("服务端{0}回调的代码,由客户端{1}运行", info, this.GetHashCode());
}
}

binding:设置时间