filename for download file THttpServer

[lunnar 0]

hi. I need to send download file. I use

ContentType:='xls/xls';
Cli.AnswerStream(Dummy,'',ContentType,'');

where I need to write Filename? 

If I try 

Cli.AnswerStream(Dummy,'',ContentType,'Content-Disposition: attachment; filename="'+ExtractFileName(Fullpath)+'"');

I get file with 0 byte

[FPiette 383]

Please clarify your question: in my mind,"send" and "download" are not compatible. It is either "receive" and "download" or "send" and "upload".

Have a look at various demos delivered with ICS distribution.

 

[Angus Robertson 574]

Generally, the 'filename' is that of the page accessed with the GET request and is not returned in the response header.   Again generally you should use the FilenameToContentType function to get the content type, which will return 'application/octet-stream' for an XLS file, which will cause the browser to bring up a dialogue box asking what to do with the file.  If you want to display the file, there are Microsoft special headers to do so.  Keep it simple until it works.

 

Angus

 

[lunnar 0]

AnswerStream is a send but for browser it's a download file. 

But it's easy:

	var link = document.createElement('a');
	link.setAttribute('href','xls/'+ID+'.xls');
	link.setAttribute('download',ID+'.xls');
	onload=link.click();	

now, all good, thx

[Angus Robertson 574]

Beware ContentType: xls/xls is not commonly supported by browsers, but if it works...

 

Angus

 

[Guest]

@lunnar Angus is right ContentType is important and you are not using standard one, i recommend to stick to the standard mime types, i faced this few times with browsers, this is real problem with email attachments,

Sources :

https://stackoverflow.com/questions/974079/setting-mime-type-for-excel-document

https://docs.microsoft.com/en-us/archive/blogs/vsofficedeveloper/office-2007-file-format-mime-types-for-http-content-streaming-2

 

[Angus Robertson 574]

ICS has a TMimeTypesList component that will read MIME types from the Windows registry, a supplied file mime.types or an internal list, application/vnd.ms-excel is common.  This component is used by TSslHttpServer for files it opens.

 

Angus

[lunnar 0]

oh. ok, thx