fix: use platform-specific HTTP client (fixes go-vikunja#66)

lib/api/client.dart

@@ -1,8 +1,11 @@
 import 'dart:convert';
 import 'dart:core';
 import 'dart:io';
+import 'package:cronet_http/cronet_http.dart' as cronet_http;
+import 'package:cupertino_http/cupertino_http.dart' as cupertino_http;
 import 'package:flutter/material.dart';
 import 'package:http/http.dart' as http;
+import 'package:http/io_client.dart' as io_client;
 import 'package:vikunja_app/api/response.dart';
 import 'package:vikunja_app/components/string_extension.dart';
 import 'package:vikunja_app/global.dart';
@@ -33,6 +36,22 @@ class Client {
     configure(token: token, base: base, authenticated: authenticated);
   }
 
+  http.Client get httpClient {
+    if (Platform.isAndroid) {
+      final engine = cronet_http.CronetEngine.build(
+          cacheMode: cronet_http.CacheMode.memory, cacheMaxSize: 1000000);
+      return cronet_http.CronetClient.fromCronetEngine(engine);
+    }
+    if (Platform.isIOS || Platform.isMacOS) {
+      final config =
+          cupertino_http.URLSessionConfiguration.ephemeralSessionConfiguration()
+            ..cache =
+                cupertino_http.URLCache.withCapacity(memoryCapacity: 1000000);
+      return cupertino_http.CupertinoClient.fromSessionConfiguration(config);
+    }
+    return io_client.IOClient();
+  }
+
   void reloadIgnoreCerts(bool? val) {
     ignoreCertificates = val ?? false;
     HttpOverrides.global = new IgnoreCertHttpOverrides(ignoreCertificates);
@@ -84,14 +103,14 @@ class Client {
         queryParameters: queryParameters,
         fragment: uri.fragment);
 
-    return http
+    return httpClient
         .get(uri, headers: _headers)
         .then(_handleResponse)
         .onError((error, stackTrace) => _handleError(error, stackTrace));
   }
 
   Future<Response?> delete(String url) {
-    return http
+    return httpClient
         .delete(
           '${this.base}$url'.toUri()!,
           headers: _headers,
@@ -101,7 +120,7 @@ class Client {
   }
 
   Future<Response?> post(String url, {dynamic body}) {
-    return http
+    return httpClient
         .post(
           '${this.base}$url'.toUri()!,
           headers: _headers,
@@ -112,7 +131,7 @@ class Client {
   }
 
   Future<Response?> put(String url, {dynamic body}) {
-    return http
+    return httpClient
         .put(
           '${this.base}$url'.toUri()!,
           headers: _headers,

pubspec.lock

@@ -169,6 +169,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.7.2"
+  cronet_http:
+    dependency: "direct main"
+    description:
+      name: cronet_http
+      sha256: "9b9f00ae48971bc8a8cbdd4528bd35511adce00fb79d1ebf9f9907667056640f"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.0"
   crypto:
     dependency: transitive
     description:
@@ -185,6 +193,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.0.0"
+  cupertino_http:
+    dependency: "direct main"
+    description:
+      name: cupertino_http
+      sha256: "20c167fd843c9ff6fc25cc4a0e8efa4180dfe119fb6d18c3c55104113e9cfc6f"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.4.0"
   cupertino_icons:
     dependency: "direct main"
     description:
@@ -592,6 +608,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.0.4"
+  jni:
+    dependency: transitive
+    description:
+      name: jni
+      sha256: "499558e919997adfc45809a66caf0b95b91393e23289dd2826b152f8f04e6611"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.7.3"
   js:
     dependency: transitive
     description:
@@ -1341,6 +1365,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.5.1"
+  web_socket:
+    dependency: transitive
+    description:
+      name: web_socket
+      sha256: "3f81fde6fbc799d03c0fb3f2c3ac84368ee267012a4beb876685c029946da4e0"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.1.0"
   web_socket_channel:
     dependency: transitive
     description:

pubspec.yaml

@@ -38,6 +38,8 @@ dependencies:
   timezone: ^0.9.2
   json_annotation: ^4.8.1
   collection: ^1.18.0
+  cupertino_http: ^1.4.0
+  cronet_http: ^1.2.0
 dev_dependencies:
   flutter_test:
     sdk: flutter