[mbedTLS] Enable TLS 1.3 negotiation by default

doc/classes/EditorSettings.xml

@@ -1117,6 +1117,10 @@
 		<member name="network/tls/editor_tls_certificates" type="String" setter="" getter="">
 			The TLS certificate bundle to use for HTTP requests made within the editor (e.g. from the AssetLib tab). If left empty, the [url=https://github.com/godotengine/godot/blob/master/thirdparty/certs/ca-certificates.crt]included Mozilla certificate bundle[/url] will be used.
 		</member>
+		<member name="network/tls/enable_tls_v1.3" type="bool" setter="" getter="">
+			If [code]true[/code], enable TLSv1.3 negotiation.
+			[b]Note:[/b] Only supported when using Mbed TLS 3.0 or later (Linux distribution packages may be compiled against older system Mbed TLS packages), otherwise the maximum supported TLS version is always TLSv1.2.
+		</member>
 		<member name="project_manager/default_renderer" type="String" setter="" getter="">
 			The renderer type that will be checked off by default when creating a new project. Accepted strings are "forward_plus", "mobile" or "gl_compatibility".
 		</member>

doc/classes/ProjectSettings.xml

@@ -2204,9 +2204,8 @@
 			The CA certificates bundle to use for TLS connections. If this is set to a non-empty value, this will [i]override[/i] Godot's default [url=https://github.com/godotengine/godot/blob/master/thirdparty/certs/ca-certificates.crt]Mozilla certificate bundle[/url]. If left empty, the default certificate bundle will be used.
 			If in doubt, leave this setting empty.
 		</member>
-		<member name="network/tls/enable_tls_v1.3" type="bool" setter="" getter="" default="false">
+		<member name="network/tls/enable_tls_v1.3" type="bool" setter="" getter="" default="true">
 			If [code]true[/code], enable TLSv1.3 negotiation.
-			[b]Note:[/b] This is experimental, and may cause connections to fail in some cases (notably, if the remote server uses TLS handshake fragmentation).
 			[b]Note:[/b] Only supported when using Mbed TLS 3.0 or later (Linux distribution packages may be compiled against older system Mbed TLS packages), otherwise the maximum supported TLS version is always TLSv1.2.
 		</member>
 		<member name="physics/2d/default_angular_damp" type="float" setter="" getter="" default="1.0">

editor/editor_settings.cpp

@@ -974,6 +974,7 @@ void EditorSettings::_load_defaults(Ref<ConfigFile> p_extra_config) {
 
 	// SSL
 	EDITOR_SETTING_USAGE(Variant::STRING, PROPERTY_HINT_GLOBAL_FILE, "network/tls/editor_tls_certificates", _SYSTEM_CERTS_PATH, "*.crt,*.pem", PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_RESTART_IF_CHANGED);
+	EDITOR_SETTING_BASIC(Variant::BOOL, PROPERTY_HINT_NONE, "network/tls/enable_tls_v1.3", true, "")
 
 	// Debug
 	_initial_set("network/debug/remote_host", "127.0.0.1"); // Hints provided in setup_network

modules/mbedtls/register_types.cpp

@@ -52,7 +52,7 @@ void initialize_mbedtls_module(ModuleInitializationLevel p_level) {
 		return;
 	}
 
-	GLOBAL_DEF("network/tls/enable_tls_v1.3", false);
+	GLOBAL_DEF("network/tls/enable_tls_v1.3", true);
 
 #if MBEDTLS_VERSION_MAJOR >= 3
 	int status = psa_crypto_init();

modules/mbedtls/tls_context_mbedtls.cpp

@@ -32,6 +32,10 @@
 
 #include "core/config/project_settings.h"
 
+#ifdef TOOLS_ENABLED
+#include "editor/editor_settings.h"
+#endif // TOOLS_ENABLED
+
 static void my_debug(void *ctx, int level,
 		const char *file, int line,
 		const char *str) {
@@ -148,8 +152,17 @@ Error TLSContextMbedTLS::init_server(int p_transport, Ref<TLSOptions> p_options,
 	}
 
 #if MBEDTLS_VERSION_MAJOR >= 3
-	if (Engine::get_singleton()->is_editor_hint() || !(bool)GLOBAL_GET("network/tls/enable_tls_v1.3")) {
-		mbedtls_ssl_conf_max_tls_version(&conf, MBEDTLS_SSL_VERSION_TLS1_2);
+#ifdef TOOLS_ENABLED
+	if (Engine::get_singleton()->is_editor_hint()) {
+		if (!EditorSettings::get_singleton()->get_setting("network/tls/enable_tls_v1.3").operator bool()) {
+			mbedtls_ssl_conf_max_tls_version(&conf, MBEDTLS_SSL_VERSION_TLS1_2);
+		}
+	} else
+#endif
+	{
+		if (!GLOBAL_GET("network/tls/enable_tls_v1.3").operator bool()) {
+			mbedtls_ssl_conf_max_tls_version(&conf, MBEDTLS_SSL_VERSION_TLS1_2);
+		}
 	}
 #endif
 
@@ -197,8 +210,17 @@ Error TLSContextMbedTLS::init_client(int p_transport, const String &p_hostname,
 	}
 
 #if MBEDTLS_VERSION_MAJOR >= 3
-	if (Engine::get_singleton()->is_editor_hint() || !(bool)GLOBAL_GET("network/tls/enable_tls_v1.3")) {
-		mbedtls_ssl_conf_max_tls_version(&conf, MBEDTLS_SSL_VERSION_TLS1_2);
+#ifdef TOOLS_ENABLED
+	if (Engine::get_singleton()->is_editor_hint()) {
+		if (!EditorSettings::get_singleton()->get_setting("network/tls/enable_tls_v1.3").operator bool()) {
+			mbedtls_ssl_conf_max_tls_version(&conf, MBEDTLS_SSL_VERSION_TLS1_2);
+		}
+	} else
+#endif
+	{
+		if (!GLOBAL_GET("network/tls/enable_tls_v1.3").operator bool()) {
+			mbedtls_ssl_conf_max_tls_version(&conf, MBEDTLS_SSL_VERSION_TLS1_2);
+		}
 	}
 #endif