feat: Add low-bandwidth mode

Author: Sorunome

lib/matrix_api_lite.dart

@@ -1,17 +1,17 @@
 /* MIT License
-* 
+*
 * Copyright (C) 2019, 2020, 2021 Famedly GmbH
-* 
+*
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
-* 
+*
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
-* 
+*
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
@@ -50,6 +50,7 @@ export 'src/model/events/room_key_request_content.dart';
 export 'src/model/events/secret_storage_default_key_content.dart';
 export 'src/model/events/secret_storage_key_content.dart';
 export 'src/model/events/tombstone_content.dart';
+export 'src/utils/low_bandwidth_helper.dart';
 export 'src/model/matrix_connection_exception.dart';
 export 'src/model/matrix_event.dart';
 export 'src/model/matrix_exception.dart';

lib/src/config/coap_config.dart

@@ -0,0 +1,49 @@
+// GENERATED CODE, do not edit this file.
+
+import 'package:coap/coap.dart';
+
+/// Configuration loading class. The config file itself is a YAML
+/// file. The configuration items below are marked as optional to allow
+/// the config file to contain only those entries that override the defaults.
+/// The file can't be empty, so version must as a minimum be present.
+class CoapConfig extends DefaultCoapConfig {
+  CoapConfig() {
+    DefaultCoapConfig.inst = this;
+  }
+
+  @override
+  CoapISpec? spec;
+
+  @override
+  String get version => 'RFC7252';
+
+  @override
+  String get deduplicator => 'MarkAndSweep';
+
+  @override
+  int get ackTimeout => 30000;
+
+  @override
+  bool get poolUdpConnectionsByClient => true;
+
+  @override
+  bool get dtlsUse => true;
+
+  @override
+  String get dtlsCiphers => 'aRSA';
+
+  @override
+  String get logTarget => 'console';
+
+  @override
+  bool get logError => true;
+
+  @override
+  bool get logDebug => false;
+
+  @override
+  bool get logWarn => true;
+
+  @override
+  bool get logInfo => false;
+}

lib/src/config/coap_config.yaml

@@ -0,0 +1,20 @@
+# Protocol section
+version: "RFC7252"
+deduplicator: "MarkAndSweep" # CropRotayion or Noop
+ackTimeout: 30000 # ms
+
+poolUdpConnectionsByClient: true
+
+dtls:
+  use: true
+  ciphers: aRSA
+
+# Logging section
+
+# Target is none or console
+logTarget: "console"
+# Log levels
+logError: true
+logDebug: false
+logWarn: true
+logInfo: false