feat: crypto/tlsutil: add cmd/httpsversioncheck

crypto/tlsutil/cmd/httpsversioncheck/main.go

@@ -0,0 +1,35 @@
+package main
+
+import (
+	"context"
+	"crypto/tls"
+	"fmt"
+	"os"
+
+	"github.com/grokify/mogo/crypto/tlsutil"
+)
+
+func main() {
+	url := "https://pkg.go.dev/"
+	if len(os.Args) > 1 {
+		url = os.Args[1]
+	}
+
+	fmt.Printf("Checking URL: [%s]\n", url)
+
+	// Test each TLS version
+	tlsVersions := []tlsutil.TLSVersion{
+		tls.VersionTLS10,
+		tls.VersionTLS11,
+		tls.VersionTLS12,
+		tls.VersionTLS13}
+
+	for _, tlsVersion := range tlsVersions {
+		err := tlsutil.SupportsTLSVersion(context.Background(), tlsVersion, url)
+		if err != nil {
+			fmt.Printf("%s: Not Supported: (%s)\n", tlsVersion.String(), err.Error())
+		} else {
+			fmt.Printf("%s: Supported\n", tlsVersion.String())
+		}
+	}
+}