--max-sessions option

src/args.rs

@@ -107,6 +107,10 @@ pub struct Args {
     /// Exit immediately when fatal error occurs, useful for running as a service
     #[arg(long)]
     pub exit_on_fatal_error: bool,
+
+    /// Maximum number of sessions to be handled concurrently
+    #[arg(long, value_name = "number", default_value = "200")]
+    pub max_sessions: usize,
 }
 
 fn validate_tun(p: &str) -> Result<String> {
@@ -149,6 +153,7 @@ impl Default for Args {
             virtual_dns_pool: IpCidr::from_str("198.18.0.0/15").unwrap(),
             daemonize: false,
             exit_on_fatal_error: false,
+            max_sessions: 200,
         }
     }
 }