Re: [Discuss-gnuradio] Error on reconnecting to TCP port
On Sun, Apr 25, 2010 at 09:52:05PM -0700, Josh Blum wrote:
> Yes, definitely expected because of the way things are implemented:
>
> The server block waits on listen, and passes the file descriptor to
> the first connection to the gnuradio file descriptor source/sink.
> After that there is no way for it to accept another connection and
> replace the file descriptor block.
>
> To do this in a better way, we would probably need a more
> complicated tcp block, or something at the C++ level.
>
> -Josh
>
>
> On 04/25/2010 09:32 PM, Berndt Josef Wulf wrote:
> >G'day,
> >
> >I've created a simple application in GRC using a TCP source in server mode.
> >When started, it excepts connections on the allocated port for the first
> >time.
> >However, after statefully disconnecting from the port, any further attempts
> >to
> >make a new connection with the server application fail - "connection
> >refused".
> >Is this the expected behavior? I was assuming that it will accept new
> >connections after disconnecting from the previous session.
> >
> >cheerio Berndt
This stuff is easy to do Python.
Have python set up the listener, then call accept when somebody
connects. Then either hand off the socket/file descriptor to a
gr_file_descriptor_{sink,source}, or do some dup2 magic to shuffle the
file descriptors around so that the file descriptor that a
gr_file_descriptor_{sink,source} already has open now refers the
socket that you're interested in.
Google for standard BSD socket examples.
Eric
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Re: [Discuss-gnuradio] Error on reconnecting to TCP port
Yes, definitely expected because of the way things are implemented: The server block waits on listen, and passes the file descriptor to the first connection to the gnuradio file descriptor source/sink. After that there is no way for it to accept another connection and replace the file descriptor block. To do this in a better way, we would probably need a more complicated tcp block, or something at the C++ level. -Josh On 04/25/2010 09:32 PM, Berndt Josef Wulf wrote: G'day, I've created a simple application in GRC using a TCP source in server mode. When started, it excepts connections on the allocated port for the first time. However, after statefully disconnecting from the port, any further attempts to make a new connection with the server application fail - "connection refused". Is this the expected behavior? I was assuming that it will accept new connections after disconnecting from the previous session. cheerio Berndt ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] Error on reconnecting to TCP port
G'day, I've created a simple application in GRC using a TCP source in server mode. When started, it excepts connections on the allocated port for the first time. However, after statefully disconnecting from the port, any further attempts to make a new connection with the server application fail - "connection refused". Is this the expected behavior? I was assuming that it will accept new connections after disconnecting from the previous session. cheerio Berndt ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
