Thanks Getmem.
The ever changing IP is only for testing purpose. Obviously When all is working alright it will use a dynamic DNS.
If you want to help me further, I attach the html I am using (I change teh ext. to txt for uploading).
The way it is, the synapse http server receives the GET first, then it submits the username + password results, then I produce a response in an html format that i want to sent back to the browser that did the
request.
To make it work from any browser outside my PC and router, what should I put in the ACTION? (I repeat i have port 81 forwarded and I know what is the IP of my router at a given moment, for testing). Thanks again