#681 WebUpdate fail to detect file size

[Paolo M.]

WebThread.pas : line 169
FileSize := InternetSetFilePointer(fFileHandle, 0, nil, FILE_END, 0);

sometimes (with Apache1.x?) fail (return -1)

infact, according to MSDN,

[...] This function cannot be used once the end of the file has been reached by InternetReadFile. [...]

use of HttpQueryInfo with HTTP_QUERY_CONTENT_LENGTH may be more correct.