Unknow TCP connection process keep running even when all subscriptions are unsubscribed

[MasonTyTran]

Describe the bug Unknow TCP connection process keep running and sending/receive package even when all subscriptions is unsubscribed

To Reproduce Steps to reproduce the behavior:

1. Create a subscription
2. When app moves to background, unsubscribe Subscription watcher

Expected behavior No TCP connection is alive

Screenshots Subscribe then unsubscribe -> 2 duplicated tcp connections and both of them periodically send/receive package

Never subscribe - There is one tcp connections and do not send/receive package periodically

Those IPs are belong to aws

Environment(please complete the following information):

• AppSync SDK Version: 3.3.0
• Dependency Manager: Cocoapods
• Swift Version : 5

Device Information (please complete the following information):

• Device: iphone 11 promax
• iOS Version: ios 16.3.1

Additional context I implement location updating in background and want to stop all appsync socket during background time to reduce energy usage but if I subscribe even 1 time to awsappsync then unsubscribe all, I still see some aws tcp connection is being active and receiving/sending data periodically

[atierian]

Thank you for opening this issue. AWS AppSync SDK for iOS entered maintenance mode in September 2023 and will receive no further updates as of September 2024.

Please use Amplify Swift going forward. For information on upgrading to Amplify Swift, refer to the Upgrade from AppSync SDK documentation.