Rousseau

Hello, During a stress test, I found a bug that could result to an access violation, it’s located in the Snap 7 core layer (S7_isotcp.cpp) It is reproducible by connecting/disconnecting the network cable during PDU exchanges. After a deep analysis, I have find that the sequence PDU number is not checked between the send and the receive while it should. That means that the response of a PDU could be used as a response of a previous one with random consequences such an access violation. I temporary...

Hello, During a stress test, I found a bug that could result to an access violation, it’s located in the Snap 7 core layer (S7_isotcp.cpp) It is reproducible by connecting/disconnecting the network cable during PDU exchanges. After a deep analysis, I have find that the sequence PDU number is not checked between the send and the receive while it should. That means that the response of a PDU could be used as a response of a previous one with random consequences such an access violation. I temporary...