Bi-Directional Socket

Are Sockets bi-directional in WinDev?

All of the examples supplied with WinDev have one socket to send messages, and another socket to receive messages. Is this really necessary, or is it possible to send and receive mesages on the same socket?

Thanks in advance.

Message forwarded from pcsoft.us.windev

Yes, sockets are bi-directional. Even between WD and WD-mobile.

Arie

HairyHaggis a écrit :
> Are Sockets bi-directional in WinDev?
>
> All of the examples supplied with WinDev have one socket to send messages, and another socket to receive messages. Is this really necessary, or is it possible to send and receive mesages on the same socket?
>
> Thanks in advance.
>
>
Sockets are bi-directional in most programming language (i think even
all of them) that support TCP.
But UDP sockets are uni-directional (they are one way packets).
Windev support client (SocketConnect) and server sockets (SocketCreate)

In some target (Windev Linux for my tests) SocketCreate doesn't work.

Bye
Message forwarded from pcsoft.us.windev

Thank you for your help & assistance.

I have now got the socket on my server listening & sending, with one more little problem.

After I use SocketAccept(), I call SocketChangeTransmissionMode() with SocketNoEndTag. This allows me to read the data sent by my VB6 client.

When I then try to send back to my VB6 client using SocketWrite() all that is received are question marks (ie "???????????"). Why is this happenning?

Any further assistance would be wonderful.

Thanks.

Message forwarded from pcsoft.us.windev

Hi...

This sounds like a string format problem (utf, ansi, unicode).... one of
the string format transformation functions available should be able to
solve that problem

Best regards

--
Fabrice Harari
International WinDev, WebDev and WinDev mobile Consulting

More information on [www.fabriceharari.com]


HairyHaggis wrote:
> Thank you for your help & assistance.
>
> I have now got the socket on my server listening & sending, with one more little problem.
>
> After I use SocketAccept(), I call SocketChangeTransmissionMode() with SocketNoEndTag. This allows me to read the data sent by my VB6 client.
>
> When I then try to send back to my VB6 client using SocketWrite() all that is received are question marks (ie "???????????"). Why is this happenning?
>
> Any further assistance would be wonderful.
>
> Thanks.
>
Message forwarded from pcsoft.us.windev

Same answer.

A tool might help.
A network sniffer.
I've tried Wireshark that work very well for me.
You can filter protocols, ip and ports.

Try to send back a string to the WD app to view what the WD app will
receive should help.

A++
Goof

Fabrice Harari a écrit :
> Hi...
>
> This sounds like a string format problem (utf, ansi, unicode).... one of
> the string format transformation functions available should be able to
> solve that problem
>
> Best regards
>
>
Message forwarded from pcsoft.us.windev

Thank you Goof & Fabrice again for all of your help, I eventually got this to work.

:-)

Message forwarded from pcsoft.us.windev