[HTTPS]-Request API failure (Could not create SSL/TLS secure channel) solution

Background

The request for HTTPS API failed in the unit test.

Abnormal

Result StackTrace:

At System.Web.Services.Protocols.WebClientProtocol.GetWebResponse (WebRequest request)
At System.Web.Services.Protocols.HttpWebClientProtocol.GetWebResponse (WebRequest request)
At System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke (String methodName, object[] parameters)

Result Message:

System.Net.WebException: The request was aborted:could not create the SSL/TLS secure channel.

Solve

Before the request, set the security protocol as follows:

True= securityprotocoltype.tls12; // Use SECURITYPROTOCOLTYPE.SSL3 if needed for compatibility reasons

Resources

https://stackoverflow.com/a/2904963

[HTTPS]-Request API failure (Could not create SSL/TLS secure channel) solution