I have a Flask_SocketIO app that supposed to implement a chat groups system. The client thats interacting with it is a flutter app. I wrote a test to see if the socketio events are working. it worked once, but than stopped. the server is getting the client's emits but not emitting back to the client. also, the connection related evets (connect, disconnect, error) seems to be fully working. the client's callbacks on these events are called.
My flutter test client:
void main() async {
setupLocator();
final api = locator<Api>();
final socketService = locator<SocketService>();
Message msg = Message(
msgId: null,
content: "Hello!",
senderId: 1,
senderName: 'tair',
sendtime: DateTime.now().toString(),
groupId: 1);
runApp(
MaterialApp(
home: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
RaisedButton(
child: Text("Disconnect"),
onPressed: () {
socketService.leave(1, 1);
}),
RaisedButton(
child: Text("Send"),
onPressed: () {
socketService.sendMessage(msg);
},
),
RaisedButton(
child: Text("Connect"),
onPressed: () {
socketService.connect(1, 1, (data) {
print('Data!');
print(data);
});
},
),
],
),
),
),
);
SharedPreferences.setMockInitialValues({});
await api.login('tair', '1234');
await socketService.getToken();
socketService.connect(1, 1, (data) {
print('Data!');
print(data);
});
- Api: A class that's interacting with rest api. not related
- SocketService: A class that's emitting and listening to events. im giving the
connect()method parameters in order to join a socketio room on the server side - locator: Dependency injecttion using pub package
get_it. also not related
Here's the events on my Server:
@sock.on('join')
def join_group_room(data):
print(data)
token = data['token']
if token in user_token.keys():
group = Group.query.filter_by(id=int(data['groupId'])).first()
if group.temp_participants is None:
group.temp_participants = data['userId'] + ','
else:
group.temp_participants += data['userId'] + ','
db.session.commit()
join_room(data['groupId'])
#print(rooms())
else:
emit('error', 'Invalid token')
@sock.on('message')
def message_room(data):
print(data)
token = data['token']
if token in user_token.keys():
message = Message(content=data['message'], groupid=int(data['groupId']), username=user_token[token],
datetime=data['datetime'])
db.session.add(message)
db.session.commit()
participants = Group.query.filter_by(id=message.groupid).first().participants.split(",")
temp_participants = Group.query.filter_by(id=message.groupid).first().temp_participants.split(",")
for participant in participants:
if participant not in temp_participants:
pushbots.push_batch(platform=pushbots.PLATFORM_ANDROID,
alias=participant,
msg='A new message arrived', payload={'data': {'message': message.content,
'messageId': message.id,
'username': user_token[
token],
'datetime': message.datetime,
'groupId': message.groupid,
'userId': User.query.filter_by(
username=user_token[
token]).first().id}})
print("Emitting")
emit('message', {'message': message.content, 'messageId': message.id,
'username': user_token[token], 'datetime': message.datetime,
'groupId': message.groupid,
'userId': User.query.filter_by(username=user_token[token]).first().id},
room=message.groupid)
sock.sleep(0)
else:
emit('error', 'Invalid token')
@sock.on('leave')
def leave_group_room(data):
print(data)
token = data['token']
if token in user_token.keys():
group = Group.query.filter_by(id=int(data['groupId'])).first()
group.temp_participants = str(group.temp_participants.split(",").remove(data['userId'])).strip('[]')
db.session.commit()
leave_room(data['groupId'])
emit('error', 'Invalid token')
Im using eventlet as async_mode for the socketio app. i looked up online for solutions and many people said i should add the following line to the main script:
import eventlet
eventlet.monkey_patch()
Also, according to my partner on this project, the events are working fine on his machine
for further explaination, here is the link to my git repo, so you can watch the whole code: My git repo (its on integration/ClientServer branch)
Thanks for helping!
