Re: Problem with rtp/multicast

[Ya Xu <yaxu@ISI.EDU>]

Arijit,

Please check out ns-problem page in which you will find a patch for the
problem.

thanks

Ya

On Tue, 11 Aug 1998, Arijit Mukherji wrote:

> 
> Hi all,
> 	I recently got ns-2.1b3 and this is my problem. It compiles and
> installs successfully, but won't run the simple-rtp.tcl script in 
> ~ns/ns-2/tcl/ex/simple-rtp.tcl.  It gives some error like the one below.
> So I installed the 2 patches (in the ns problems web page) (first the one 
> for intServ, then the one for multicast). now I have another problem. This
> time i get a segmentation fault. the message is also included below. 
> 
> OK, i tried this on 2 platforms with exactly the same results, 
> - solaris 2.6 on a sparc 5
> - redhat 5.0 (linux kernel 2.xx) 
> 
> ns-2.1a3 did NOT have this problem but unfortunately i can't find the
> ns-2.1a3 distribution at the ns website anymore :-(
> 
> any help would really be appreciated.
> 
> Thanks in advance !
> 
> Arijit
> 
> ===================================================================
> 
> BEFORE THE PATCHES
> 
> VAP:> ns /usr/local/ns-allinone-2.1b3/ns-2/tcl/ex/simple-rtp.tcl 
> ns: _o3 run-mcast: invalid command name "0"
>     while executing
> "[$link set ifacein_] set intf_label_"
>     (procedure "_o10" line 3)
>     (Node get-oif line 3)
>     invoked from within
> "$self get-oif $link"
>     (procedure "_o10" line 5)
>     (Node init-outLink line 5)
>     invoked from within
> "$node init-outLink"
>     (procedure "_o3" line 5)
>     (Simulator run-mcast line 5)
>     invoked from within
> "_o3 run-mcast"
> 
> ============================================================================
> 
> AFTER THE PATCHES
> 
> >  gdb /usr/local/ns-allinone-2.1b3/ns-2/ns
> 
> (gdb) run /usr/local/ns-allinone-2.1b3/ns-2/tcl/ex/simple-rtp.tcl
> 
> Starting program: /usr/local/ns-allinone-2.1b3/ns-2/ns
> /usr/local/ns-allinone-2.1b3/ns-2/tcl/ex/simple-rtp.tcl
> 
> Program received signal SIGSEGV, Segmentation fault.
> 0xef563d50 in strlen ()
> 
> (gdb) bt
> 
> #0  0xef563d50 in strlen ()
> #1  0xef5a1f8c in _doprnt ()
> #2  0xef5aae14 in sprintf ()
> #3  0x1e848 in Trace::format (this=0x2ccd60, tt=43, s=0, d=1, p=0x28bb50)
>     at trace.cc:304
> #4  0x1ea70 in Trace::recv (this=0x2ccd60, p=0x28bb50, h=0x0) at
> trace.cc:355
> #5  0x1d210 in Connector::send (this=0x2d8cc0, p=0x28bb50, h=0x0)
>     at connector.h:53
> #6  0x74054 in NetworkInterface::recv (this=0x2d8cc0, pkt=0x28bb50, h=0x0)
>     at net-interface.cc:46
> #7  0x23ba4 in Replicator::recv (this=0x275e50, p=0x2bb260)
>     at replicator.cc:87
> #8  0x20650 in Classifier::recv (this=0x28a1f0, p=0x2bb260, h=0x0)
>     at classifier.cc:133
> #9  0x20650 in Classifier::recv (this=0x294b60, p=0x2bb260, h=0x0)
>     at classifier.cc:133
> #10 0x32084 in RTPAgent::sendpkt (this=0x282c60) at rtp.cc:153
> #11 0x2fa14 in CBR_Agent::start (this=0x282c60) at cbr.cc:64
> #12 0x2fffc in CBR_Agent::command (this=0x282c60, argc=2, argv=0xefffac14)
>     at cbr.cc:165
> #13 0x31eb4 in RTPAgent::command (this=0x282c60, argc=2, argv=0xefffac14)
>     at rtp.cc:120
> #14 0x81b30 in TclClass::dispatch_cmd ()
> #15 0x84510 in OTclDispatch (cd=0x2a8c18, in=0x1aa168, argc=3, 
>     argv=0xefffaca0) at otcl.c:419
> #16 0x89088 in TclInvokeStringCommand ()
> ---Type <return> to continue, or q <return> to quit---
> #17 0xa3fcc in TclExecuteByteCode ()
> #18 0x89a18 in Tcl_EvalObj ()
> #19 0xa41c4 in TclExecuteByteCode ()
> #20 0x89a18 in Tcl_EvalObj ()
> 
> ... and so on
> 
> ===================================================================================
> 
>