Hello Dears,

I modified  a source code and when I run it I faced this error

msg="Could not connect callback to /NodeList/1/$ns3::TcpL4Protocol/SocketList/0/CongestionWindow", +0.000010000s -1 file=../src/core/mo del/config.cc, line=906 terminate called without an active exception

Could you please help me to overcome this error.

Thanks a lot