In addition to method responses and data samples, Cortex can send a third type of message, called warnings.
These warnings inform your application about important events, like when the user logs in or out, or when a training profile is loaded or unloaded for a headset.
Description
A warning object contain these fields:
Name
Type
Description
jsonrpc
string
Always has the value "2.0".
warning
object
An object with the fields "code" and "message".
The warning object has 2 fields:
Name
Type
Description
code
number
The code of this warning. The possible codes are documented below.
message
any
The type and value of this field depends on the code. For most of the warnings it is just a string, but it can also be an object. See the examples below.
Warning Codes
The possible codes are:
Code
Description
0
All the data streams you subscribed to have been automatically canceled by Cortex. This can happen if the headset was disconnected.
1
Your session was automatically closed by Cortex. This can happen if the headset was disconnected.
2
The user has logged in with EMOTIV App.
3
The user has logged out with EMOTIV App.
9
The user approved your application in EMOTIV App.
10
The user declined your application in EMOTIV App.
13
A training profile was loaded for a headset using setupProfile​
14
A training profile was unloaded for a headset using setupProfile.
15
A training profile was automatically unloaded by Cortex. This can happen if the headset was disconnected, or if the application that loaded this profile was disconnected from Cortex.
17
The user accepted the EULA in EMOTIV App.
19
The available disk space is low. Cortex send this warning when there is less then 1 GB available of the hard drive.
This warning was added in Cortex 2.2.1
20
The available disk space is critically low. Cortex send this warning when there is less then 300 MB available of the hard drive. When this happens Cortex automatically disconnect all the headsets. You cannot connect a headset until the user free up some space.
Cortex has changed the opt-out configuration. This can happen when the license of the user is updated.
This warning was added in Cortex 2.2.1
26
The license of the user will expire in a few days.
This warning was added in Cortex 2.3.0
100 and 101
Cortex failed to connect to a headset. If the headset uses a Bluetooth connection, then you should try to disconnect the headset from the Bluetooth manager of the OS.
102
Cortex reached a timeout while trying to connect to a headset. This can happen if the wireless connection is of poor quality.
103
Cortex disconnected a headset because it didn't receive any data from this headset for more than 30 seconds. This can happen if the headset goes out of range of the computer, or if the wireless connection is of poor quality.
104
Cortex successfully connected to a headset.
Examples
0 - Data stream unsubscribed
1
{
2
"jsonrpc":"2.0",
3
"warning":{
4
"code":0,
5
"message":{
6
"behavior":"Cortex has stopped all the subscriptions of session 866b8437-2380-4392-9a35-3d5957eaf95d.",