Download file size error

[mvsanhueza]

Dear,

I am using the library to perform automatic updates to a software coming from an ftp link and .msi file. I have the problem that the window showing the download status shows a file size of -1 B. Is there any way to fix this?

[ravibpatel]

This can happen if the server is not sending the Content-Length header. It uses it to determine size of the file.

[mvsanhueza]

I understand the issue. However, since the link is of type FTP, I encounter this problem with the server where I have the document. When performing a request download in C# (according to the following link: FTPWebResponse.ContentLength), the content length returned to me is -1. However, if I perform a request beforehand using the GetFileSize method (WebRequestMethods.Ftp.GetFileSize), it correctly returns the ContentLength. I'm not an expert in this field, but at least where the FTP-linked server is hosted, I need to generate two requests: one to obtain the ContentLength and another to download the file.