fix(lifecycle): abort HTTP before close

lib/utils/abortable_http_request.dart

@@ -0,0 +1,59 @@
+import 'dart:async';
+import 'dart:convert';
+
+import 'package:http/http.dart' as http;
+
+Future<http.Response> sendAbortableHttpRequest(
+  http.Client client,
+  String method,
+  Uri uri, {
+  Map<String, String>? headers,
+  Object? body,
+  Encoding? encoding,
+  Duration? timeout,
+  Future<void>? abortTrigger,
+  String? operation,
+}) {
+  final abort = Completer<void>();
+  void abortRequest() {
+    if (!abort.isCompleted) abort.complete();
+  }
+
+  if (abortTrigger != null) {
+    unawaited(abortTrigger.whenComplete(abortRequest));
+  }
+
+  final request = http.AbortableRequest(method, uri, abortTrigger: abort.future);
+  if (headers != null) request.headers.addAll(headers);
+  if (encoding != null) request.encoding = encoding;
+  if (body != null) _setBody(request, body);
+
+  final future = client.send(request).then(http.Response.fromStream);
+  if (timeout == null) return future.whenComplete(abortRequest);
+
+  return future
+      .timeout(
+        timeout,
+        onTimeout: () {
+          abortRequest();
+          throw TimeoutException('${operation ?? '$method ${uri.path}'} timed out', timeout);
+        },
+      )
+      .whenComplete(abortRequest);
+}
+
+void _setBody(http.Request request, Object body) {
+  if (body is String) {
+    request.body = body;
+    return;
+  }
+  if (body is List<int>) {
+    request.bodyBytes = body;
+    return;
+  }
+  if (body is Map) {
+    request.bodyFields = body.cast<String, String>();
+    return;
+  }
+  throw ArgumentError('Invalid request body "$body".');
+}