How to handle timeout error with Dio in Flutter?

Manage timeout exception using dio :

ApiRepositary.dart

 class ApiRepositary {  Dio dio;  ApiRepositary() {    if (dio == null) {      BaseOptions options = new BaseOptions(          baseUrl: "your base url",          receiveDataWhenStatusError: true,          connectTimeout: 60*1000, // 60 seconds          receiveTimeout: 60*1000 // 60 seconds          );      dio = new Dio(options);    }  }  Future<LoginResponse> getLoginDetails(var loginRequestData) async {    try {      Response response = await dio.post("/authenticate", data: loginRequestData);      final LoginResponse loginResponse = LoginResponse.fromJson(response.data);      return loginResponse;    }on DioError  catch (ex) {      if(ex.type == DioErrorType.CONNECT_TIMEOUT){        throw Exception("Connection  Timeout Exception");      }      throw Exception(ex.message);    }  }}

Example of handle exception :

void checkLogin(){ LoginRequest loginRequest = new LoginRequest(            email: "abcd@gmail.com",password: "passs@123");        var requestBody =jsonEncode(loginRequest);        debugPrint("Request Data : $requestBody");        _apiRepositary.getLoginDetails(requestBody).then((response){          debugPrint("Login Success $response");          //manage your response here         },          onError: (exception){              //Handle exception message            if(exception.message != null ){              debugPrint(exception.message); // Here you get : "Connection  Timeout Exception"            }          },        );}

Here's what I'm guessing by looking at one of their test files and their error class:

try {  await Dio().get("https://does.not.exist");} on DioError catch (e) {  if (e.type == DioErrorType.connectTimeout) {    // ...  }  if (e.type == DioErrorType.receiveTimeout) {    // ...  }}

You to define DIO option first:

 BaseOptions options = new BaseOptions(  baseUrl: "http://example.org",  connectTimeout: 5000,  receiveTimeout: 3000,);

then:

Dio dio = new Dio(options);var jsonNews = await dio.get(        'http://example.org/v2/everything?q=bitcoin&from=2020-01-24&sortBy=publishedAt&apiKey=7f3c604b6e2245c88se50lzx02dc9cac1e2');

Source :

https://pub.dev/packages/dio