[Ns-bugs] [Bug 198] New: TcpSocketImpl missing attributes initiliazation in copy constructor

[bugzilla-daemon@nsnam-www.ece.gatech.edu]

http://www.nsnam.org/bugzilla/show_bug.cgi?id=198

           Summary: TcpSocketImpl missing attributes initiliazation in copy
                    constructor
           Product: ns-3
           Version: unspecified
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P3
         Component: internet-node
        AssignedTo: ns-bugs at isi.edu
        ReportedBy: vincent at clarinet.u-strasbg.fr


Hello,

I made a little tcp-echo application (adapted from udp-echo) to test TCP. But I
face a problem. The TcpSocketImpl::GetTxAvailable() on the echo server always
returns 0, the server never echoed anything and the TCP stack just send an ACK.

After inverstigation I noticed in copy constructor (
TcpSocketImpl::TcpSocketImpl(const TcpSocketImpl& sock) ) that
the two attributes m_sndBufSize and m_rcvBufSize are not copied.

In the patch, I set this two attributes in copy constructor and now the server
echoes the client's packets. 

I think it is normal that the echo-response does not set the ACK flags as
NS-3's TCP stack does not implement the delayed acknowledgement (which is why
the server send an ACK after the echo response).


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