|I have a web application based in aspnet 4.5 that is running on a Windows 2016 Server with IIS 10. The app allows to client the downloading of several documents (img, pdf, zip files). All works correctly from several years but starting from 4 weeks to now ios based client (ipad and iphone running 13.3 ios) receive corrupted files. Looking at the logs I have seen that the client closes the connection abnormaly.
this is the code snippets i use to send files:
System.IO.FileInfo fInfo = new System.IO.FileInfo(allegatizipfilename);
Response.AddHeader("Content-disposition", "attachment; filename=allegati.zip");
Response.ContentType = "application/octet-stream";
I have tried to disable http2, to allow longer connection time, to reduce the minimal connection speed all with no results.
What is strange to me is the fact that anything worked fine till some week ago and nothing was changed in the server configuration nor the software code.
Anyone has the same issue ?