new PIClientServer::ClientBase::stopAndWait() method for blocking stop read.

PIClientServer::ClientBase::close() now non-blocking

tests/client_server/client_server_test.cpp

@@ -154,7 +154,7 @@ TEST(ClientServer, DynamicClients) {
 	auto s                 = createServer<true, true, 10_KiB>();
 
 	const auto spawnClient = [&clients, &clients_mutex]() {
-		if (clients.size() > 100) return;
+		// if (clients.size() > 100) return;
 		auto c = new ClientSendThread();
 		c->startSend();
 		clients_mutex.lock();
@@ -180,7 +180,7 @@ TEST(ClientServer, DynamicClients) {
 			}
 			piCout << "+++++++";
 		},
-		52_Hz);
+		12_Hz);
 
 	deleteThread.start(
 		[&clients, &clients_mutex]() {
@@ -199,9 +199,9 @@ TEST(ClientServer, DynamicClients) {
 			}
 			piCout << "----------";
 		},
-		53_Hz);
+		13_Hz);
 
-	(10_s).sleep();
+	(2_s).sleep();
 
 	EXPECT_GE(s->clientsCount(), 10);