C# WCF

目录

• 1. Tcp服务-双工
  • 服务端
  • 客户端
• 2. WCF解决(413) Request Entity Too Large

wcf模式分为单工、双工、半双工三种模式

1. Tcp服务-双工

服务端

双工定义：客户端 访问 服务器方法 回调 客户端方法

服务端接口类：IChatService

• 服务器添加回调接口类IChatServiceCallBack ，定义回调方法

      public interface IChatServiceCallBack
      {
          [OperationContract]
          void HelloClient(string msg);
      }
  

• 签订回调契约：该契约签订在服务器接口类上方，接口方法中可以调用已经签订签约的回调方法

      [ServiceContract(CallbackContract =typeof(IReportServiceCallback))]
      public interface IChatService
      {
          [OperationContract]
          void HelloServer(string msg);
      }
  

服务端继承接口类：ChatService : IChatService

• 签订服务行为：实现接口的类需要声明服务行为

  [ServiceBehavior(ConcurrencyMode = ConcurrencyMode.Reentrant)]
  

• 回调

  public void HelloServer(string msg)
  {
      Console.WriteLine(msg);
      OperationContext.Current.GetCallbackChannel<IChatServiceCallBack>().HelloClient("SayHello from server");
  }
  

客户端

• 添加Wcf服务引用

• 继承回调接口并且实现

public void HelloClient(string msg)
{
    textBox1.Text = msg;
}

• 回调函数声明

  [CallbackBehavior(UseSynchronizationContext = false)]

• 调用服务器接口

  InstanceContext instanceContext = new InstanceContext(this);
  ChatServiceClient client = new ChatServiceClient(instanceContext);
  client.HelloServer("Sayhello from Client");
  

2. WCF解决(413) Request Entity Too Large

传输内容过大， wcf数据传输采用的默认的大小是65535字节

• 服务端配置

<system.serviceModel>
  <bindings>
    <basicHttpBinding>
      <!--设置 关闭超时 接收超时 发送超时 传送最大字节数  -->
      <binding   closeTimeout="00:10:00" receiveTimeout="00:20:00" sendTimeout="00:20:00" maxBufferSize="2147483647" maxReceivedMessageSize="2147483647"/>
    </basicHttpBinding>
  </bindings>
<system.serviceModel>

• 客户端配置

<system.serviceModel>
    <bindings>
      <basicHttpBinding>
        <binding name="BasicHttpBinding_IService">
          <readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647" maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647" />
        </binding>
      </basicHttpBinding>
    </bindings>
<system.serviceModel>