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Learn how to set up a WCF client in .NET Core 3.1 to include proxy username and password for seamless corporate proxy access.
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How to Include Proxy Username and Password for WCF Client in .NET Core 3.1

Accessing external web services from within a corporate network can often be challenging due to security measures such as firewalls and proxy servers. If you're developing a .NET Core 3.1 application that interacts with a SOAP service located on the internet, you might find yourself needing to specify your corporate proxy's credentials. This guide will guide you through the process of configuring your WCF client to include the necessary username and password for your proxy server.

Understanding the Problem

Incorporating a proxy server username and password in your application is crucial for successful communication between your client and the external SOAP service. Users often encounter errors such as EndpointNotFoundException, which indicates that the client cannot connect to the specified service endpoint, frequently due to proxy issues.

Setting Up Your WCF Client

Initial Setup

Here’s a snippet of your current client code for making a SOAP request:

[[See Video to Reveal this Text or Code Snippet]]

In the code above, you have successfully set the proxy address. However, to access external services through a corporate proxy server, you must also provide authentication credentials.

Including Credentials

To provide your Active Directory account details for proxy access, you can directly set the ClientCredential properties. Here’s how you can update your code:

[[See Video to Reveal this Text or Code Snippet]]

Make sure to replace your_username, your_password, and your_domain with your actual Active Directory credentials.

Troubleshooting Common Errors

Even after including the necessary credentials, you may still encounter issues such as the EndpointNotFoundException. This error can be due to several factors:

Incorrect Endpoint Address: Double-check that the endpoint address for the SOAP service is correct. Ensure there are no typographical errors and that the service is actually reachable from your network.

Network Configuration: Confirm that your corporate network allows connections to the SOAP service. Sometimes, specific ports may be blocked or restricted.

Proxy Settings Validity: Ensure that the proxy settings you are using are correct and that you have the necessary permissions.

Conclusion

Incorporating proxy credentials into your WCF client is a straightforward process that can help you overcome connectivity issues when accessing external services through corporate proxies. By following the steps outlined above, you can effectively set up your .NET Core 3.1 application to communicate with SOAP services securely and smoothly.

If you still encounter issues, consider consulting your network administrator or review your service configurations for additional troubleshooting. With the right setup, you can leverage the capabilities of external web services while adhering to your organization’s security protocols.

Feel free to leave comments below if you have any questions or additional tips on working with WCF clients in .NET Core.