Re: [Discuss-gnuradio] Problem with "TCP Source" module in the client mode

[Martin Braun]

On 03.03.2014 17:57, Igor Volodin wrote:
> Hi all!
>
> I am trying to build following simple scheme:
>
> Signal source --> TCP Sink (server mode)  <---- TCP Source (client mode)
> --> GUI Scope Sink
>
> It's strange but this simple scheme isn't working.

Are you running both sub-flowgraphs in the same GRC canvas? I just tried 
this in 2 canvases and it works. It *should* work from one, but I'm not 
sure GRC is setting things up right.

In any case, try 2 canvases.

M
> sockstat shows me:
>
> USER     COMMAND    PID   FD PROTO  LOCAL ADDRESS         FOREIGN ADDRESS
> igor     python2.7  56206 11 tcp4   10.21.32.6:21950 10.21.32.6:12000
>
> Looks like communication between tcp sink and tcp source blocks has been
> established, but tcpdump doesn't show any packets
>
> I decided to check first part of my scheme (Signal source + TCP Sink),
> and connected using netcat utility to the tcp sink port. All looks OK,
> the values come as expected.
>
> Can anybody explain, why this simple scheme doesn't work?
>
>
> Best regards,
> Igor
>
>
>
>
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