limited min version to 1.2

Makefile

@@ -1,6 +1,6 @@
 GOOS=linux
 GOFILES=gosecure.go
-VERSION=0.1.0
+VERSION=0.1.1
 VERSION_NAME=Ugly Logger
 BINARY_NAME=gosecure
 

README.md

@@ -10,6 +10,9 @@
 # gosecure 
 Simple command line secure tunneling tool.
 
+`gosecure` supports tls >= 1.2 (yes, 1.3 too!)
+
+
 ## Usage
 ```
   -cert string

gosecure.go

@@ -35,6 +35,10 @@ var (
 // CONFIG : Command line arguments instance
 var CONFIG Config
 
+func init() {
+    os.Setenv("GODEBUG", os.Getenv("GODEBUG")+",tls13=1")
+}
+
 func main() {
 	//log.SetFlags(log.Lshortfile)
 
@@ -59,7 +63,10 @@ func main() {
 		return
 	}
 
-	config := &tls.Config{Certificates: []tls.Certificate{cer}}
+	config := &tls.Config{
+		Certificates: []tls.Certificate{cer},
+		MinVersion:   tls.VersionTLS12,
+	}
 	ln, err := tls.Listen("tcp", CONFIG.local, config)
 	if err != nil {
 		log.Println(err)