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(Lianja) HTTPS Server Certificate Require Hostname MatchSee more HTTP ExamplesDemonstrates and explains the RequireHostnameMatch property.Note: This example requires Chilkat v11.0.0 or greater.
// The RequireHostnameMatch property was added in Chilkat v11.0.0 // to ensure the URL's hostname matches at least one of the server certificate SAN's (Subject Alternative Names) // // In actuality, it is the SNI hostname that must match. If the SNI hostname is not explicitly set, // then Chilkat uses the hostname from the URL as the SNI hostname. // Here's an example using chilkatsoft.com // The SSL server certificate for chilkatsoft.com has 2 Subject Alternative Names: // // 1) DNS Name: *.chilkatsoft.com // 2) DNS Name: chilkatsoft.com // // See Explaining the SNI Hostname in TLS loHttp = createobject("CkHttp") loHttp.RequireHostnameMatch = .T. // This should succeed because "www.chilkatsoft.com" matches the SAN entry "*.chilkatsoft.com" lcHtml = loHttp.QuickGetStr("https://www.chilkatsoft.com/helloWorld.html") ? "1) Succeeded: " + str(loHttp.LastMethodSuccess) // At the time of writing this example, the IP address for chilkatsoft.com is 3.101.18.47 // If we send the request using the IP address, it will fail because the IP address is does // not match any of the SAN entries in the server certificate. lcHtml = loHttp.QuickGetStr("https://3.101.18.47/helloWorld.html") ? "2) Succeeded: " + str(loHttp.LastMethodSuccess) // However, it will succeed if we explicitly set the SNI hostname. loHttp.SniHostname = "www.chilkatsoft.com" lcHtml = loHttp.QuickGetStr("https://3.101.18.47/helloWorld.html") ? "3) Succeeded: " + str(loHttp.LastMethodSuccess) // Remove our explicit SNI hostname. loHttp.SniHostname = "" // Now let's try wrong.host.badssl.com // The SSL server certificate for badssl.com has 2 Subject Alternative Names: // // 1) DNS Name: *.badssl.com // 2) DNS Name: badssl.com // The domain wrong.host.badssl.com will fail the RequireHostnameMatch because // the wildcarded domain SAN entry only extends 1 level deep. lcHtml = loHttp.QuickGetStr("https://wrong.host.badssl.com/") ? "4) Succeeded: " + str(loHttp.LastMethodSuccess) // The expected output is: // 1) Succeeded: True // 2) Succeeded: False // 3) Succeeded: True // 4) Succeeded: False release loHttp |
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