tcp: tls: reduce level of message if no SNI is found

This is similar to what we do in the HTTP parser, if no hostname is
there we can't do much but it's not really an error.

This was suggested in #6.

Signed-off-by: Antoine Tenart <[email protected]>

src/tcp/tls.rs

@@ -6,7 +6,7 @@ use std::{
 };
 
 use anyhow::{bail, Result};
-use log::debug;
+use log::{debug, info};
 
 use crate::{
     config::{self, Config},
@@ -41,7 +41,8 @@ pub(crate) async fn handle_stream(config: Arc<Config>, stream: TcpStream) -> Res
         // None was present, which is valid. But we can't do anything with that message.
         None => {
             tls::alert(rb.get_mut(), tls::AlertDescription::UnrecognizedName)?;
-            bail!("No SNI hostname in message");
+            info!("No SNI hostname in message");
+            return Ok(());
         }
     };
     debug!("Found SNI {hostname} in TLS handshake");