TCP communication over Dialup

[Paul [Paradise Solutions]]

Hi all

I have a client/server communication sysem in operation which allows
processes to be fired on the desktop depending on responces entered on
the PDA. This is used to enable to PDA user to upload certain files to
the desktop, confirm data updates etc.
This all works fine when the PDA is cradled with the desktop, connecting
to 192.168.55.100 and I'm connecting to port 9876 (no particualr reson
for the choice).
I'm now trying to get it to work via a dial up.

The IP address being picked up from the 'ppp_peer' registry key is
169.254.218.190 (which is correct to my dial in interface in ipconfig)
and I have a tcplistener setup on the desktop for that IP on port 9875
to prevent conflict with local syncing.
However, when my client software connects it generates an exception
stating that:

"the host machine actively refused the connection"

I switched off my firewall, but still no joy. I'm running XP Pro using
XPs 'bits' to run the dial in adaptor, with VB.Net.
Could anyone give me any pointers as to what could be going wrong?


Many thanks


Paul Eden

 

[Paul G. Tobey [eMVP]]

The 'actively refused the connection error' indicates, most likely, that no
one is listening on the port you are trying to connect to. This might mean
that you are picking the wrong (but a valid), IP address in some way, trying
to connect to yourself, etc.

Paul T.