How Can I Ignore SSL Certificate Verification in C#?

Ignore SSL certificate verification

To bypass SSL certificate verification during HTTPS requests, you can use a ServicePointManager.ServerCertificateValidationCallback proxy. This proxy allows custom certificate validation logic, enabling us to ignore validation errors.

Agent details

The ServicePointManager.ServerCertificateValidationCallback proxy is called every time an HTTPS connection is made with an untrusted or expired certificate. It accepts four parameters:

• obj: An instance of ServicePoint that attempts to verify the certificate.
• certificate: X509 certificate being verified.
• chain: The X509 certificate chain associated with the certificate.
• errors: SSL policy error associated with the verification attempt.

Achievement

To ignore certificate verification, register a proxy that always returns true to indicate acceptance of the certificate. This can be done in the GetRequest() method, as shown in the following code snippet:

ServicePointManager.ServerCertificateValidationCallback = delegate(
    Object obj, X509Certificate certificate, X509Chain chain, 
    SslPolicyErrors errors)
    {
        return (true);
    };

Execution and Placement

This proxy method is called when WebRequest attempts to establish an HTTPS connection and encounters a trust or expiration error. It should be registered before executing the request. In the provided code, it is placed before the Stream stream = request.GetRequestStream() line.

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