How to monitor a file transfer from web site

Classic Servoy
1

I have a method to import small graphic files (20-50 kB each) from an external web site using a http GET request and .getMediaData() function. The data is then written to a file using plugins.file.writeFile. The method works ok, unless I try to retrieve multiple files using a ‘for’ loop. In this case the downloaded files are not complete, I imagine because the loop leaves no time to the .getMediaData() function to complete the file transfer.

I could use a function to delay the execution of the loop for a few seconds, but how many: 5, 10, more? The exact amount would be a wild guess because of the uncertainties inherent to a web transfer. Is there a way to monitor the transfer so to know when the graphic data are completely transferred to the variable and this can be safely written to disk?

Thanks for any help.

2

You should investigate the “plugins.file.streamFilesToServer” and "“plugins.file.streamFilesFromServer” functions, or even the free UserManager plugin which also has stream to/from server file transfer functions.

3

I did consider plugins.file.streamFilesFromServer functions and the UserManager plugin, but, if I am not wrong, they can be used for transfers between a Servoy server and client, not from any web server. But if I am wrong I would like to know how to do this.

rioba

4

I see. I was thinking you were in Web Client, so streaming to the server, then down to the client, is the way to go. I recall doing something similar once using the file plugin but using a while loop to check for the file instead of a delay in a for loop. Maybe look at that as an option.