Get the file size of a file on the server.

okay.. for my download manager i need to get the file size. I tried using the available method of inputstream, and the getContentLength() of URLConnection, which worked but only for webpages. so does anyone know how to do this? Sun does it in SDM, but i dont think the source is included. ill download it again and check.
thanks.

content-length is not guaranteed to be anythingi dont think so. correct me if i am wrong..
http://www.w3.org/Protocols/rfc2616/rfc2616-sec4.html#s
c4.4 states -
" When a Content-Length is given in a message where a
message-body is allowed, its field value MUST exactly
match the number of OCTETs in the message-body.
HTTP/1.1 user agents MUST notify the user when an
invalid length is received and detected."
this sort of guarantees that if a file is being
downloaded the content-length gives the size of the
file. i am able to confirm this by sniffing the
traffic of my download manager.This is only guaranteed if the content length field is present. :-)
However, looking two paragraphs up:
'All HTTP/1.1 applications that receive entities MUST accept the "chunked" transfer-coding (section 3.6), thus allowing this mechanism to be used for messages when the message length cannot be determined in advance.'
There is mechanism built in for cases where the size cannot be determined.
Regards,
Bhaveet

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[sorry, deleted irrelevant wrong answer]

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