Prefer ASIO functions that take error codes

Source/dvlnet/tcp_client.cpp

@@ -17,14 +17,9 @@ namespace devilution::net {
 
 int tcp_client::create(std::string addrstr)
 {
-	try {
-		auto port = *sgOptions.Network.port;
-		local_server = std::make_unique<tcp_server>(ioc, addrstr, port, *pktfty);
-		return join(local_server->LocalhostSelf());
-	} catch (std::system_error &e) {
-		SDL_SetError("%s", e.what());
-		return -1;
-	}
+	auto port = *sgOptions.Network.port;
+	local_server = std::make_unique<tcp_server>(ioc, addrstr, port, *pktfty);
+	return join(local_server->LocalhostSelf());
 }
 
 int tcp_client::join(std::string addrstr)
@@ -32,16 +27,26 @@ int tcp_client::join(std::string addrstr)
 	constexpr int MsSleep = 10;
 	constexpr int NoSleep = 250;
 
-	try {
-		std::stringstream port;
-		port << *sgOptions.Network.port;
-		asio::connect(sock, resolver.resolve(addrstr, port.str()));
-		asio::ip::tcp::no_delay option(true);
-		sock.set_option(option);
-	} catch (std::exception &e) {
-		SDL_SetError("%s", e.what());
+	std::string port = StrCat(*sgOptions.Network.port);
+
+	asio::error_code errorCode;
+	asio::ip::basic_resolver_results<asio::ip::tcp> range = resolver.resolve(addrstr, port, errorCode);
+	if (errorCode) {
+		SDL_SetError("%s", errorCode.message().c_str());
+		return -1;
+	}
+
+	asio::connect(sock, range, errorCode);
+	if (errorCode) {
+		SDL_SetError("%s", errorCode.message().c_str());
 		return -1;
 	}
+
+	asio::ip::tcp::no_delay option(true);
+	sock.set_option(option, errorCode);
+	if (errorCode)
+		LogError("Client error setting socket option: {}", errorCode.message());
+
 	StartReceive();
 	{
 		cookie_self = packet_out::GenerateCookie();

Source/dvlnet/tcp_server.cpp

@@ -208,8 +208,11 @@ void tcp_server::HandleAccept(const scc &con, const asio::error_code &ec)
 	if (NextFree() == PLR_BROADCAST) {
 		DropConnection(con);
 	} else {
+		asio::error_code errorCode;
 		asio::ip::tcp::no_delay option(true);
-		con->socket.set_option(option);
+		con->socket.set_option(option, errorCode);
+		if (errorCode)
+			LogError("Server error setting socket option: {}", errorCode.message());
 		con->timeout = timeout_connect;
 		StartReceive(con);
 		StartTimeout(con);