Segmentation fault in inet::Chunk::peek() just in Qtenv at Express speed and in CmdEnv

[DAVIDE SAVARRO]

I am having a Segmentation fault starting in the Chunk::peek() method when reading the chunk from a TCP Packet (called from the socketDataArrived() method of an application extending the TcpBasicClientApp of INET).
The strange thing is that I get this error just when using the "Express" speed in Qtenv or using Cmdenv, but at regular or "Fast Run" speed the simulation works fine until the end. I also experience this issue when using 3 clients or more and with 2 or less everything works fine.

To reproduce the issue

1. Clone the following repository: https://github.com/Dosclic98/MQTT_MMS_Medium
2. Swich on the "dev" branch.
3. After setting all up just run the "MMS_MIMT_Wired_TEST" configuration, as I said i experience the bug just in Qtenv at Express simulation speed or in Cmdenv. You can also start the simulation at regular speed and just after you set the Express speed the segmentation fault appears.

[Levente Mészáros]

In ClientEvilComp::socketDataArrived the call to TcpAppBase::socketDataArrived deletes the packet.

So you are peeking a chunk from a packet that is already deleted.

Regards,

levy

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[DAVIDE SAVARRO]

That was it, I missed that, thanks a lot!

Best Regards.

Davide Savarro