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https://issues.apache.org/jira/browse/TS-3847?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14699786#comment-14699786
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Bryan Call commented on TS-3847:
--------------------------------

I took a look at this on Saturday and it looks like there is a header block to 
change the table size to 0 and then another header block to change the size to 
4096.  I believe this is valid and should clear the dynamic table according to 
the RFC.

> Rejects Dynamic Table Size if it does not appear at the beginning of the 
> first header block
> -------------------------------------------------------------------------------------------
>
>                 Key: TS-3847
>                 URL: https://issues.apache.org/jira/browse/TS-3847
>             Project: Traffic Server
>          Issue Type: Bug
>          Components: HTTP/2
>            Reporter: Masaori Koshiba
>
> Section 4.2 of RFC 7541(HPACK), says that dynamic table size update MUST 
> occur at the beginning of the first header block following the changes to the 
> dynamic table size.
> {code}
> ===============================================================================
> Failed tests
> ===============================================================================
>   4.3. Header Compression and Decompression
>     × Encodes Dynamic Table Size Update (RFC 7541, 6.3) after common header 
> fields
>       - The endpoint MUST terminate the connection with a connection error of 
> type COMPRESSION_ERROR.
>         Expected: GOAWAY frame (ErrorCode: COMPRESSION_ERROR)
>                   Connection close
>           Actual: DATA frame (Length: 5991, Flags: 1)
> {code}



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