diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2527da5..5d9d845 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -32,6 +32,9 @@ if (SOLANACEAE_SDBOT_WEBUI_STANDALONE)
 	set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin")
 endif()
 
+#add_compile_options(-fsanitize=undefined)
+#link_libraries(-fsanitize=undefined)
+
 # external libs
 add_subdirectory(./external EXCLUDE_FROM_ALL) # before increasing warn levels, sad :(
 
diff --git a/src/sd_bot.cpp b/src/sd_bot.cpp
index 1f40f7c..3511398 100644
--- a/src/sd_bot.cpp
+++ b/src/sd_bot.cpp
@@ -194,8 +194,8 @@ float SDBot::iterate(void) {
 			_current_task = std::nullopt;
 		}
 
-		if (_current_task.has_value()) {
-			_curr_future.reset();
+		if (_curr_future.has_value()) {
+			_curr_future.reset(); // might block and wait
 		}
 	}
 
@@ -206,8 +206,8 @@ float SDBot::iterate(void) {
 
 		if (_cli == nullptr) {
 			const std::string server_host {_conf.get_string("SDBot", "server_host").value()};
-			_cli = std::make_unique<httplib::Client>(server_host, _conf.get_int("SDBot", "server_port").value());
-			_cli->set_read_timeout(std::chrono::minutes(5));
+			_cli = std::make_shared<httplib::Client>(server_host, _conf.get_int("SDBot", "server_port").value());
+			_cli->set_read_timeout(std::chrono::minutes(2)); // because of discarding futures, it can block main for a while
 		}
 
 		nlohmann::json j_body;
@@ -244,10 +244,17 @@ float SDBot::iterate(void) {
 
 		try {
 			const std::string url {_conf.get_string("SDBot", "url_txt2img").value()};
-			_curr_future = std::async(std::launch::async, [this, url, body]() -> std::vector<uint8_t> {
+			_curr_future = std::async(std::launch::async, [url, body, cli = _cli]() -> std::vector<uint8_t> {
+				if (!static_cast<bool>(cli)) {
+					return {};
+				}
 				// TODO: move to endpoint
-				auto res = _cli->Post(url, body, "application/json");
-				std::cout << "SDB http complete " << res->status << " " << res->reason << "\n";
+				auto res = cli->Post(url, body, "application/json");
+				if (!static_cast<bool>(res)) {
+					std::cerr << "SDB error: post to sd server failed!\n";
+					return {};
+				}
+				std::cerr << "SDB http complete " << res->status << " " << res->reason << "\n";
 				if (
 					res.error() != httplib::Error::Success ||
 					res->status != 200
@@ -262,7 +269,7 @@ float SDBot::iterate(void) {
 			// cleanup
 			_task_map.erase(_current_task.value());
 			_current_task = std::nullopt;
-			_curr_future.reset();
+			_curr_future.reset(); // might block and wait
 		}
 
 		_prompt_queue.pop();
diff --git a/src/sd_bot.hpp b/src/sd_bot.hpp
index d6fd888..fd78902 100644
--- a/src/sd_bot.hpp
+++ b/src/sd_bot.hpp
@@ -31,7 +31,7 @@ class SDBot : public RegistryMessageModelEventI {
 	uint64_t _last_task_counter = 0;
 
 	std::optional<uint64_t> _current_task;
-	std::unique_ptr<httplib::Client> _cli;
+	std::shared_ptr<httplib::Client> _cli;
 	std::optional<std::future<std::vector<uint8_t>>> _curr_future;
 
 	std::default_random_engine _rng;