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This doesn't really work as a solution. The available() method can
prevent me from hanging since I can do other things while waiting for
more data to become available (although given the request/response
nature of servlets, there isn't much else my code can be working on).
Since the current implementation provides no way for my servlet to know
when it has reached the end of the request body, I don't know when to
stop polling and therefore still hang in a sense (it's just that I'm not
blocked on the read()).
Do any of the developers who worked on this section of code between 1.0
and 1.1 have any suggestions or comments?
thanks,
--Barry
Tyler Morrison wrote:
>
> ----------------------------------------------------------------
> BEFORE YOU POST, search the faq at <http://java.apache.org/faq/>
> WHEN YOU POST, include all relevant version numbers, log files,
> and configuration files. Don't make us guess your problem!!!
> ----------------------------------------------------------------
>
> Could you use the java.io.InputStream.available() method to determine how many bytes
>to read without blocking and use that? Perhaps it is JServ making the read() call
>and so this thought will be of no use.
>
> peace,
> Tyler
>
> >We just discovered that we have a client program (not developed by us,
> >so we can't change how it works) that is trying to interact with our
> >servlets running under JServ. The client's requests are failing because
> >the client is sending chunked transfer encodings (header
> >Transfer-Encoding= chunked). For those unfamiliar with the HTTP 1.1
> >spec this means that the body (in this case the body of a PUT method),
> >doesn't contain a Content-Length header, and instead sends the body of
> >the request as a series of chunks, each proceeded by a size marker. The
> >server then is responsible for parsing the chunks, removing the size
> >markers and assembling the request body.
> >
> >>From an email chain I found
> >(http://www.magiccookie.com/bboard/do=list-containers/container=1748)
> >there is a discussion on how JServ 1.0, doesn't support chunked
> >encoding, but that it was being worked on.
> >
> >It looks indeed like some of the support for chunked encoding has been
> >added. In jserv_apjv12.c the code has changed from 1.0 to 1.1 to call
> >ap_setup_client_block() with REQUEST_CHUNKED_DECHUNK, instead of
> >REQUEST_CHUNKED_ERROR.
> >
> >However the chunked support doesn't seem to work. What happens under
> >JServ 1.1 is that the servlet can read the body of the HTTP request
> >through the JServInputStream, but since the content length isn't set
> >(i.e. it is -1), the input stream doesn't seem to know when the end of
> >the request body is reached, and just hangs waiting for mod_jserv to
> >send more data.
> >
> >My environment is:
> >WinNT
> >Apache 1.3.9
> >JServ 1.1
> >JDK 1.2.2
> >
> >Does anyone have JServ working with requests coming in in chunked
> >format? or have any suggestions?
> >
> >thanks,
> >--Barry
> >
> >
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> ------------------------------------------------------
> Tyler Morrison - [EMAIL PROTECTED]
>
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