I have written a Lazarus/FPC program to configure an IoT device via a tcp server I have implemented on the device. It all works well for setting the parameters etc. Now I want to also add a firmware update function to this configurator program, but I could use some advice regarding the way to send the file data...
The firmware updater service is running on the IoT device on port 80 as a web server and when one connects to that URL with a browser the following happens: 1) A login dialog is shown where a username and a password needs to be entered. 2) Next a very simple web form is shown with the following source: <html> <body> <form method='POST' action='' enctype='multipart/form-data'> <input type='file' name='update'> <input type='submit' value='Update'> </form> </body> </html> 3) When the "Browse..." button is clicked one gets to navigate the file system and select a file to upload. The name is then displayed in a box. 4) Upon hitting the submit button "Update" the file is sent to the IoT device and used to update the firmware. Now I want to get rid of the web browser step and integrate the functionality of the form into the configuration program, but I don't know how to actually send the POST data to the IoT device so it will work... The instructions for the WebUpdater service I have added to the IoT device has a second alternative for uploading the firmware using curl: curl -u user:pwd -F "image=@firmware.bin" <ip-address>:80/firmware I don't want to require that curl is present on the PC where my program will run, though, so I want to implement the actual post message in my fpc code. Does someone have a suggestion on how to do this? By the way, I am using the Indy10 components via the indylaz package. Lazarus is 1.8.0 and FPC 3.0.4 on Windows7. -- Bo Berglund Developer in Sweden _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
