When using workmanager: ^0.2.3 I have been able to do some work in the background but I can't send data to the sever using the http package in the background. It simply doesn't happen when it gets to the api call.
This is what I've written in main:
void callbackDispatcher() {
Workmanager.executeTask((task, inputData) async {
switch (task) {
case simpleTaskKey:
await sendUnsentDataToServerIfOffline(inputData);
break;
}
return Future.value(true);
});
}
void sendDetailsAPIFromWorker(
List<Details> detailsToSent, Map<String, dynamic> inputData) async {
List<TDetails> tDetails = [];
detailsToSent.forEach((detail) => tDetails.add(TDetails(
serviceTime: detail.serviceTime,
fromStopTime: detail.fromStopTime,
toStopTime: detail.toStopTime,
submitType: detail.submitType,
status: detail.status,
travelledDistance: 0.0)));
SendDetails sendDetail = SendDetails(
userToken: inputData['token'],
missionId: inputData['service_id'],
details: tDetails);
Map<String, String> requestHeaders = {
'Content-type': 'application/json',
'Accept': 'application/json'
};
try {
final url = '${inputData['base_url']}$kAPISubmitMissionTransportURL';
try {
final response = await http.post(url,
headers: requestHeaders, body: json.encode(sendDetail.toJson()));
if (json.decode(response.body)['Status'] == 1) {
detailsToSent.forEach((detail) => DBHelper.deleteStopTransportData(
kTransportDetailsTableName,
inputData['service_id'],
detail.serviceDetailId));
List<int> ids = [];
await detailsToSent
.forEach((detail) => ids.add(detail.serviceDetailId));
print('ids to to set send: $ids');
await DBHelper.setDetailSent(
kTransportDetailsTableName, ids, inputData['service_id']);
}
} catch (error) {
}
} catch (error) {
print(error);
}
}
Related
List is always empty even though body has contents. I am new to flutter so bare with me if this is basic. I am wanting to get back a list of station data I am coming from a c# background so forgive me if am missing something simple the test string body has the items and can see the items when i debug
class HttpService {
final String url = "url hidden";
final String host = 'url hidden';
final String apiSegment = "api/";
// ignore: non_constant_identifier_names
void login(email, password) async {
try {
Map<String, String> body = {
'username': email,
'password': password,
};
Map<String, String> headers = {'Content-Type': 'application/json'};
final msg = jsonEncode(body);
Response response =
await post(Uri.parse("$url/Login"), headers: headers, body: msg);
if (response.statusCode == 200) {
var data = jsonDecode(response.body.toString());
print(data['jwtToken']);
print('Login successfully');
final prefs = await SharedPreferences.getInstance();
await prefs.setString('jwtToken', data['jwtToken']);
List<Stations> stationData = await getStationData('11');
var test = stationData;
} else {
print('failed');
}
} catch (e) {
print(e.toString());
}
}
Future<List<Stations>> getStationData(String stationId) async {
final prefs = await SharedPreferences.getInstance();
final String? token = prefs.getString('jwtToken');
const String path = 'Station/GetAllStationData';
final uri = Uri.parse('$url/api/$path')
.replace(queryParameters: {'stationId': stationId});
List<Stations> stationData = <Stations>[];
try {
Response res = await get(uri, headers: {
'Content-Type': 'application/json',
'Accept': 'application/json',
// 'Authorization': 'Bearer $token',
});
if (res.statusCode == 200) {
var body = jsonDecode(res.body);
var body2 = body.toString();
stationData = body
.map(
(dynamic item) => Stations.fromJson(item),
)
.toList();
} else {
throw "Unable to retrieve posts.";
}
} catch (e) {
print(e.toString());
}
return stationData;
}
}
I am calling my function from the same class
List<Stations> stationData = await getStationData('11');
Data from body
Actually the problem is you are returning the data after the end of try catch.
Try this
Future<List<Stations>> getStationData(String stationId) async {
final prefs = await SharedPreferences.getInstance();
final String? token = prefs.getString('jwtToken');
const String path = 'Station/GetAllStationData';
final uri = Uri.parse('$url/api/$path')
.replace(queryParameters: {'stationId': stationId});
try {
Response res = await get(uri, headers: {
'Content-Type': 'application/json',
'Accept': 'application/json',
// 'Authorization': 'Bearer $token',
});
if (res.statusCode == 200) {
var body = jsonDecode(res.body);
final stationData = List<Stations>.from(body.map((item) => Stations.fromJson(item))); // made some changes
return stationData;
} else {
throw "Unable to retrieve posts.";
}
} catch (e) {
rethrow;
}
}
I hope this will help you
I need to use timeout if post request not working so, I write below code:
class APIService {
static var client = http.Client();
static Future<bool> login(LoginRequestModel model) async {
Map<String, String> requestHeaders = {
'Content-Type': 'application/json',
};
var url = Uri.http(Config.apiURL, Config.loginAPI);
try {
final response = await client
.post(
url,
headers: requestHeaders,
body: jsonEncode(model.toJson()),
)
.timeout(const Duration(seconds: 5));
print("response:");
print(response);
if (response.statusCode == 200) {
//SHARED
await SharedService.setLoginDetails(loginResponseJson(response.body));
return true;
} else {
return false;
}
} on TimeoutException catch (e) {
// handle timeout
return false;
}
}
But never end await client.post method waiting althouth I add timeout. How can I solve this ?
You can try this:
import 'package:http/http.dart' as http;
import 'package:http/io_client.dart' as http;
final body = { 'email': email, 'password': password };
final client = http.Client();
http.Response res;
try {
res = await client
.post(
url,
headers: requestHeaders,
body: jsonEncode(model.toJson()),
.catchError((e) {
// SocketException would show up here, potentially after the timeout.
})
.timeout(const Duration(seconds: 5));
} on TimeoutException catch (e) {
// Display an alert, no internet
} catch (err) {
print(err);
return null;
}
Is there any example that I can refer to about Common class/method for flutter API calls(GET,POST,...) in flutter? I have handled all the API requests in a common method in react native, I'm not sure how to implement it in flutter.
you have to call getRequest using url parameter
Future<Response> getRequest(String url) async {
Response response;
try {
response = await _dio.get(url,
options: Options(headers: {
HttpHeaders.authorizationHeader:
'Bearer $accessToken'
}));
print('response $response');
} on DioError catch (e) {
print(e.message);
throw Exception(e.message);
}
return response;
}
here is the post method
Future<Response> posRequestImage(String url, data) async {
try {
response = await _dio.post(
url,
data: formData,
options: Options(headers: {
HttpHeaders.authorizationHeader:
'Bearer $accessToken'
}),
);
if (response.statusCode == 200) {
return response;
}
print('post response $response');
} on DioError catch (e) {
print(e.message);
throw Exception(e.response?.statusMessage);
}
return response;
}
You can create a class to handle it. For example, this is my class to handle all service for user model
import 'package:http/http.dart' as http;
class UserService {
var baseUrl = URL.devAddress;
Future<User> getUser() async {
final response = await http.get(
Uri.parse(baseUrl + "user/1")
);
if (response.statusCode == 200) {
final data = json.decode(response.body);
return data
} else {
throw Exception("Failed");
}
}
}
Future<void> getUser(String username) async {
Uri uri = Uri.parse('https://example.com');
try {
Map<String, dynamic> params = new HashMap();
params['username'] = username;
final response = await client.post(uri,
body: jsonEncode(params),
);
print("response ${response.body}");
} on FetchDataException {
throw FetchDataException("No Internet connection");
}
}
Hello Guys any help will be apprecited please,
I am unable to send Http post or get request using workmanager plugin in flutter, any solutions to this would be highly appreciated, thanks
Here is my code
any help will be appreciated
thanks
Workmanager.executeTask((task, inputData) async {
switch (task) {
case fetchBackground:
print('checkStatusnow');
final sharedPref = await SharedPreferences.getInstance();
pendingStat = sharedPref.getBool('pendingStat');
print('pendingStat $pendingStat');
// await initialStat();
String url = 'https://getStat.com/chargeStat';
try {
var param = {
'authorization_code': authoStatCode,
'email': umail,
'amount': StatFare *100,
};
String body= json.encode(param);
var response = await http.Client().post(Uri.parse(url), headers: <String, String>{
'Authorization': StatKey,
'Content-Type': 'application/json',
'Accept': 'application/json'
},body: body,
);
if (response.statusCode == 200) {
print(response.body);
print("Successfull");
final data = jsonDecode(response.body);
print(data);
if (StatFounds == null) {
print("Status Not found");
}
else {
print ('checkForSta');
}
}
else {
print(response.reasonPhrase);
print("not available");
sharedPref.setBool("Stat", true);
}
} catch (e) {
}
So I'm using flutter (And flutter for web) to build a WebRTC client. I have a spring-boot server acting as the go-between for two clients. They both subscribe to a WebSocket to get messages from the other. It does nothing more than that.
I'm getting Error: InvalidStateError: Failed to execute 'setRemoteDescription' on 'RTCPeerConnection': Failed to set remote answer sdp: Called in wrong state: kStable
I don't know why this error is happening.
Here's the code for the signalling
typedef void StreamStateCallback(MediaStream stream);
class CallingService {
String sendToUserId;
String currentUserId;
final String authToken;
final StompClient _client;
final StreamStateCallback onAddRemoteStream;
final StreamStateCallback onRemoveRemoteStream;
final StreamStateCallback onAddLocalStream;
RTCPeerConnection _peerConnection;
List<RTCIceCandidate> _remoteCandidates = [];
String destination;
var hasOffer = false;
var isNegotiating = false;
final Map<String, dynamic> _constraints = {
'mandatory': {
'OfferToReceiveAudio': true,
'OfferToReceiveVideo': true,
},
'optional': [],
};
CallingService(
this._client,
this.sendToUserId,
this.currentUserId,
this.authToken,
this.onAddRemoteStream,
this.onRemoveRemoteStream,
this.onAddLocalStream) {
destination = '/app/start-call/$sendToUserId';
print("destination $destination");
_client.subscribe(
destination: destination,
headers: {'Authorization': "$authToken"},
callback: (StompFrame frame) => processMessage(jsonDecode(frame.body)));
}
Future<void> startCall() async {
await processRemoteStream();
RTCSessionDescription description =
await _peerConnection.createOffer(_constraints);
await _peerConnection.setLocalDescription(description);
var message = RtcMessage(RtcMessageType.OFFER, currentUserId, {
'description': {'sdp': description.sdp, 'type': description.type},
});
sendMessage(message);
}
Future<void> processMessage(Map<String, dynamic> messageJson) async {
var message = RtcMessage.fromJson(messageJson);
if (message.from == currentUserId) {
return;
}
print("processing ${message.messageType.toString()}");
switch (message.messageType) {
case RtcMessageType.BYE:
// TODO: Handle this case.
break;
case RtcMessageType.LEAVE:
// TODO: Handle this case.
break;
case RtcMessageType.CANDIDATE:
await processCandidate(message);
break;
case RtcMessageType.ANSWER:
await processAnswer(message);
break;
case RtcMessageType.OFFER:
await processOffer(message);
break;
}
}
Future<void> processCandidate(RtcMessage candidate) async {
Map<String, dynamic> map = candidate.data['candidate'];
var rtcCandidate = RTCIceCandidate(
map['candidate'],
map['sdpMid'],
map['sdpMLineIndex'],
);
if (_peerConnection != null) {
_peerConnection.addCandidate(rtcCandidate);
} else {
_remoteCandidates.add(rtcCandidate);
}
}
Future<void> processAnswer(RtcMessage answer) async {
if (isNegotiating){
return;
}
var description = answer.data['description'];
await _peerConnection.setRemoteDescription(
RTCSessionDescription(description['sdp'], description['type']));
}
Future<void> processOffer(RtcMessage offer) async {
await processRemoteStream();
var description = offer.data['description'];
await _peerConnection.setRemoteDescription(
new RTCSessionDescription(description['sdp'], description['type']));
var answerDescription = await _peerConnection.createAnswer(_constraints);
await _peerConnection.setLocalDescription(answerDescription);
var answerMessage = RtcMessage(RtcMessageType.ANSWER, currentUserId, {
'description': {
'sdp': answerDescription.sdp,
'type': answerDescription.type
},
});
sendMessage(answerMessage);
if (_remoteCandidates.isNotEmpty) {
_remoteCandidates
.forEach((candidate) => _peerConnection.addCandidate(candidate));
_remoteCandidates.clear();
}
}
Future<void> processRemoteStream() async {
await createStream();
_peerConnection = await createPeerConnection(_iceServers, _config);
_peerConnection.onSignalingState = (state) {
isNegotiating = state != RTCSignalingState.RTCSignalingStateStable;
};
_peerConnection.onAddTrack = (MediaStream stream, _) {
this.onAddRemoteStream(stream);
print("sending stream from track");
};
_peerConnection.onAddStream = (MediaStream stream) {
this.onAddRemoteStream(stream);
print("sending stream");
};
_peerConnection.onRemoveStream =
(MediaStream stream) => this.onRemoveRemoteStream(stream);
_peerConnection.onIceCandidate = (RTCIceCandidate candidate) {
print("sending candidate");
var data = {
'candidate': {
'sdpMLineIndex': candidate.sdpMlineIndex,
'sdpMid': candidate.sdpMid,
'candidate': candidate.candidate,
},
};
var message = RtcMessage(RtcMessageType.CANDIDATE, currentUserId, data);
sendMessage(message);
};
}
void sendMessage(RtcMessage message) {
_client.send(
destination: destination,
headers: {'Authorization': "$authToken"},
body: jsonEncode(message.toJson()));
}
Map<String, dynamic> _iceServers = {
'iceServers': [
{"url" : "stun:stun2.1.google.com:19302"},
{'url' : 'stun:stun.l.google.com:19302'},
/*
* turn server configuration example.
{
'url': 'turn:123.45.67.89:3478',
'username': 'change_to_real_user',
'credential': 'change_to_real_secret'
},
*/
]
};
final Map<String, dynamic> _config = {
'mandatory': {},
'optional': [
{'DtlsSrtpKeyAgreement': true},
],
};
Future<MediaStream> createStream() async {
final Map<String, dynamic> mediaConstraints = {
'audio': true,
'video': {
'mandatory': {
'minWidth':
'640', // Provide your own width, height and frame rate here
'minHeight': '480',
'minFrameRate': '30',
},
'facingMode': 'user',
'optional': [],
}
};
MediaStream stream = await navigator.getUserMedia(mediaConstraints);
if (this.onAddLocalStream != null) {
this.onAddLocalStream(stream);
}
return stream;
}
}
My first problem was I was not setting the local description for the offer/answer stage.
However, when I add a new stun server, I get the same exception. Either way, I don't get a remote stream showing.
So when I was creating the offer and answer I wasn't setting local description. So there's that.
It's still not showing remote connections though.