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<defaultProxy> Element (Network Settings)

Configures the Hypertext Transfer Protocol (HTTP) proxy server.

<configuration> Element
  <system.net> Element (Network Settings)
    <defaultProxy> Element (Network Settings)
<defaultProxy 
  enabled="true|false" 
  useDefaultCredentials="true|false" 
  <bypasslist> … </bypasslist> 
  <proxy> … </proxy> 
  <module> … </module> 
/>

The following sections describe attributes, child elements, and parent elements.

Attributes

Element

Description

enabled

Specifies whether a web proxy is used. The default value is true.

useDefaultCredentials

Specifies whether the default credentials for this host are used to access the web proxy. The default value is false.

Child Elements

Element

Description

<bypasslist>

Provides a set of regular expressions that describe addresses that do not use the proxy.

<module>

Adds a new proxy module to the application.

<proxy>

Defines a proxy server.

Parent Elements

Element

Description

<system.net>

Contains settings that specify how the .NET Framework connects to the network.

If the defaultProxy element is empty, the proxy settings from Internet Explorer will be used. This behavior is different from version 1.1 of the .NET Framework.

An exception is thrown if the <module> element specifies a non-public type, the type is not deriving from the IWebProxy class, an exception from the default constructor of this object occurred, or an exception occurred while retrieving the system-specified default proxy. The InnerException property on the exception should have more information about the root cause of the error.

Configuration Files

This element can be used in the application configuration file or the machine configuration file (Machine.config).

The following code example uses the defaults from the Internet Explorer proxy, specifies the proxy address, and bypasses the proxy for local access and contoso.com.

<configuration>
  <system.net>
    <defaultProxy>
      <proxy
        usesystemdefault="true"
        proxyaddress="http://192.168.1.10:3128"
        bypassonlocal="true"
      />
      <bypasslist
        <add address="[a-z]+\.contoso\.com" />
      </bypasslist>
    </defaultProxy>
  </system.net>
</configuration>

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