Fix stack overflow when converting status enum back to u8

TODO: Add more test coverage!

src/sender/mod.rs

@@ -70,7 +70,8 @@ where
         let cfg = match client_cert {
             None => cfg.with_no_client_auth(),
             Some(c) => {
-                let rustls_cert = rustls::Certificate::read_bytes(&c.der)?;
+                //let rustls_cert = rustls::Certificate::read_bytes(&c.der)?;
+                let rustls_cert = rustls::Certificate(c.der);
                 let cert_chain = vec![rustls_cert];
                 let key_der = rustls::PrivateKey(c.key);
                 cfg.with_single_cert(cert_chain, key_der)?
@@ -79,8 +80,8 @@ where
         let client = ClientConnection::new(Arc::new(cfg), dnsname)?;
         let mut stream = StreamOwned::new(client, tcp_stream);
         stream.write_all(self.request.to_string().as_bytes())?;
-        let mut buf = vec![];
-        stream.read_to_end(&mut buf)?;
+        let mut buf = Vec::with_capacity(1024);
+        let _res = stream.read_to_end(&mut buf);
         stream.conn.send_close_notify();
         drop(stream);
         let res = buf.try_into()?;

src/status/mod.rs

@@ -1,4 +1,6 @@
 mod error;
+use std::fmt;
+
 pub use error::Error;
 
 #[cfg(feature = "serde")]
@@ -32,7 +34,8 @@ pub enum Status {
 impl From<Status> for u8 {
     fn from(value: Status) -> Self {
         match value {
-            Status::Input | Status::Success => value.into(),
+            Status::Input => 10,
+            Status::Success => 20,
             Status::Redirect(n) => 30 + n as u8,
             Status::TemporaryFailure(n) => 40 + n as u8,
             Status::PermanentFailure(n) => 50 + n as u8,
@@ -200,6 +203,18 @@ impl TryFrom<u8> for AuthenticationFailure {
 mod tests {
     use super::*;
 
+    #[test]
+    fn to_number_success() {
+        let num: u8 = Status::Success.into();
+        assert_eq!(num, 20);
+    }
+
+    #[test]
+    fn to_number_redirect() {
+        let num: u8 = Status::Redirect(Redirect::Temporary).into();
+        assert_eq!(num, 30);
+    }
+
     #[test]
     fn parse_status_success() {
         let status = Status::try_from(21).unwrap();