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From Filip Hanik - Dev Lists <>
Subject Re: Tomcat NIO : CometProcessor
Date Fri, 02 Apr 2010 15:14:05 GMT

you're wrong, I believe it is


The spec says

        chunk          = chunk-size [ chunk-extension ] CRLF
                         chunk-data CRLF

Hence, the request that was posted here, should have been 16bytes 
header, not 18


On 04/01/2010 11:23 AM, Michael Wojcik wrote:
> Filip Hanik - Dev Lists wrote:
>> I just skimmed this through, but from what I remember, the CRLF after
>> </xml>  should not be counted into your "chunk header"
> No, the chunk-size is the entire length of the chunk. Since a chunked
> content-body can include any sort of data, it wouldn't make sense to
> exclude trailing whitespace characters - the content might not be of a
> type where "whitespace characters" were defined.
> See RFC 2616 3.6.1:
>         chunk-data     = chunk-size(OCTET)
> There must be exactly as many octets as specified in chunk-size.
> What I don't see in the trace are the zero-size chunks that terminate
> the chunked content-bodies.
> In frame 12, the client closes the connection (sends a FIN); that
> would appear to be why Tomcat is reporting the client closed the
> connection.
> Of course this is only a half-close, and the server *could* still send
> a response, but RFC 2616 doesn't acknowledge the half-close mechanism
> in TCP. From 4.4:
>     5.By the server closing the connection. (Closing the connection
>       cannot be used to indicate the end of a request body, since that
>       would leave no possibility for the server to send back a response.)
> This is, depending on your viewpoint, an error, oversight, or
> restriction in HTTP; but in effect it means that if the client closes
> its end of the conversation after sending a request but before
> receiving a response, the the server is free to consider the
> connection closed (even though it isn't) and discard the request.

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