fix: allow slow server shutdowns

src/session.rs

@@ -11,7 +11,7 @@ pub const SESSION_ENV_VAR: &str = "HERDR_SESSION";
 pub const DEFAULT_SESSION_NAME: &str = "default";
 
 const MAX_SESSION_NAME_LEN: usize = 64;
-const STOP_WAIT_TIMEOUT: Duration = Duration::from_secs(2);
+const STOP_WAIT_TIMEOUT: Duration = Duration::from_secs(15);
 const STOP_WAIT_POLL: Duration = Duration::from_millis(25);
 const MIN_SOCKET_TIMEOUT: Duration = Duration::from_millis(1);
 
@@ -494,6 +494,11 @@ mod tests {
         (client, server, path)
     }
 
+    #[test]
+    fn stop_wait_timeout_allows_slow_graceful_shutdown() {
+        assert_eq!(STOP_WAIT_TIMEOUT, Duration::from_secs(15));
+    }
+
     #[test]
     fn stop_request_errors_wait_for_socket_state() {
         for kind in [