[Ns-bugs] [Bug 748] New: Cloned TCP socket uses wrong source address

[code@nsnam.ece.gatech.edu]

http://www.nsnam.org/bugzilla/show_bug.cgi?id=748

           Summary: Cloned TCP socket uses wrong source address
           Product: ns-3
           Version: ns-3-dev
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P5
         Component: internet-stack
        AssignedTo: ns-bugs at isi.edu
        ReportedBy: f1mauchl at hsr.ch
   Estimated Hours: 0.0


Created an attachment (id=668)
 --> (http://www.nsnam.org/bugzilla/attachment.cgi?id=668)
patch proposal

A listening TCP socket, to which a connection is opened, forks a new socket and
determines the source address to use from the route lookup, instead of using
the destination address to which the connection request originally has been
sent to. This leaves the connection in a state where no communication is
possible, as the endpoint of the forked socket does not match the address the
client socket is sending packets to.

To solve this, it is required to pass the packet's destination address to the
socket. This also requires changes to the Ipv4Endpoint API. 

The proposed patch includes changes to the TCP forking process and the
Ipv4Endpoint API. Other protocols are only modified to match the new
Ipv4Endpoint API to be able to compile it, but do not make explicit use of it.

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