以编程方式创建自定义绑定

Posted 2023-03-04

【中文标题】以编程方式创建自定义绑定

【英文标题】：Creating Custom Binding programmatically

【发布时间】：2012-03-21 00:37:26

【问题描述】：

我们需要在我们的 WCF Web 服务中进行压缩，并且已经找到了一个好的解决方案：

http://www.codeproject.com/Articles/53718/Extending-WCF-Part-II

只有一个问题。配置文件不是选项。如何在代码中创建这些自定义绑定？

  <customBinding>
    <binding name="ZipBinding" closeTimeout="00:10:00" 
openTimeout="00:10:00" receiveTimeout="00:10:00" 
    sendTimeout="00:10:00">
      <customMessageEncoding innerMessageEncoding="mtomMessageEncoding" 
    messageEncoderType="YourAssemblyName.YourMessageEncoder, 
    WcfExtensions">
        <readerQuotas maxDepth="999999999" 
            maxStringContentLength="999999999" 
    maxArrayLength="999999999" maxBytesPerRead="999999999" 
    maxNameTableCharCount="999999999">
        </readerQuotas>
      </customMessageEncoding>
      <httpTransport maxBufferSize="999999999" 
        maxReceivedMessageSize="999999999" 
    authenticationScheme="Anonymous" 
    proxyAuthenticationScheme="Anonymous" useDefaultWebProxy="true"/>
    </binding>
  </customBinding>

这是我想出的：

MessageEncodingBindingElementExtension customMessageEncoding = new MessageEncodingBindingElementExtension

    InnerMessageEncoding = "binaryMessageEncoding",
    MessageEncoderType = "WcfExtensions.GZipMessageEncoder, WcfExtensions",
;
customMessageEncoding.ReaderQuotas.MaxDepth = 999999999;
customMessageEncoding.ReaderQuotas.MaxStringContentLength = 999999999;
customMessageEncoding.ReaderQuotas.MaxArrayLength = 999999999;
customMessageEncoding.ReaderQuotas.MaxBytesPerRead = 999999999;
customMessageEncoding.ReaderQuotas.MaxNameTableCharCount = 999999999;

CustomBinding zipBinding = new CustomBinding(customMessageEncoding, new HttpTransportBindingElement

    MaxBufferSize = 999999999,
    MaxReceivedMessageSize = 999999999,
    AuthenticationScheme = System.Net.AuthenticationSchemes.Anonymous,
    ProxyAuthenticationScheme = System.Net.AuthenticationSchemes.Anonymous,
    UseDefaultWebProxy = true
);

zipBinding.CloseTimeout = new TimeSpan(0, 10, 0);
zipBinding.OpenTimeout = new TimeSpan(0, 10, 0);
zipBinding.ReceiveTimeout = new TimeSpan(0, 10, 0);
zipBinding.SendTimeout = new TimeSpan(0, 10, 0);

但由于某种原因，CustomBinding 不接受 customMessageEncoding...

【参考方案1】：

CustomBinding 类型的构造函数中的第一个参数仅接受 BindingElement 子类。您指定的类是BindingElementExtensionElement 子类（用于自定义配置Xml）。

与其将BindingElementExtensionElement 的子类传递给CustomBinding 构造函数，不如创建一个合适的BindingElement 子类实例（例如BinaryMessageEncodingBindingElement）并调用BindingElementExtensionElement 的ApplyConfiguration 方法，传入BindingElement。

然后将BindingElement 的实例传递给CustomBinding 构造函数。

BinaryMessageEncodingBindingElement encodingElement = new BinaryMessageEncodingBindingElement();
customMessageEncoding.ApplyConfiguration(encodingElement);

CustomBinding zipBinding = new CustomBinding(encodingElement, new HttpTransportBindingElement

    MaxBufferSize = 999999999,
    MaxReceivedMessageSize = 999999999,
    AuthenticationScheme = System.Net.AuthenticationSchemes.Anonymous,
    ProxyAuthenticationScheme = System.Net.AuthenticationSchemes.Anonymous,
    UseDefaultWebProxy = true
);