Client concurrency option

src/main.rs

@@ -67,6 +67,9 @@ struct OptClient {
 	/// Do not verify certificates
 	#[argp(switch, short = 's')]
 	skip_verif: bool,
+	/// Maximum number of concurrent clients
+	#[argp(option, default = "16")]
+	concurrency: usize,
 	/// Print debug info
 	#[argp(switch, short = 'd')]
 	debug: bool,
@@ -150,6 +153,7 @@ async fn main() {
 				subopt.repeat,
 				subopt.certs.as_deref(),
 				subopt.skip_verif,
+				subopt.concurrency,
 				subopt.debug,
 			)
 			.await;