Race condition occur in NSMutableDictionary (store)

[FrankElias77]

Bug Report

Race condition found in NSMutableDictionary+Store when one thread sets a value to the dictionary and the other thread is reading. This race only occurred with TCP connection not on SYNC.

The first thread started in func - (void)stream:(NSStream *)aStream handleEvent:(NSStreamEvent)eventCode of SDLTCPTransport and another Read-only thread started when handler gets called in - (void)sdl_runHandlersForResponse:(SDLRPCResponseNotification *)notification func of SDLResponseDispatcher and the request is SDLRegisterAppInterface *regRequest = [[SDLRegisterAppInterface alloc] initWithLifecycleConfiguration:self.configuration.lifecycleConfig]; sent in didEnterStateConnected func of SDLLifeCycleManager

Reproduction Steps

1. Connect app
2. Launch app on the hmi

OS & Version Information

• iOS Version: Xcode 12.5 simulator
• SDL iOS Version: Branch develop
• Testing Against: Manticore