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Re: bash sockets: printf \x0a does TCP fragmentation
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From: |
Chet Ramey |
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Subject: |
Re: bash sockets: printf \x0a does TCP fragmentation |
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Date: |
Thu, 11 Oct 2018 15:11:53 -0400 |
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User-agent: |
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 |
On 10/11/18 12:53 PM, Dirk Wetter wrote:
> This all -- including cat -- sounded reasonable. But it seems using sockets
> the internal printf
> as opposed to the one from coreutils is still causing fragmentation other
> than expected with
> strace PoC:
Bash line-buffers stdout, so newlines cause writes and packet
fragmentation.
http://lists.gnu.org/archive/html/bug-bash/2018-09/msg00086.html
http://lists.gnu.org/archive/html/bug-bash/2018-09/msg00095.html
http://lists.gnu.org/archive/html/bug-bash/2018-09/msg00102.html
http://lists.gnu.org/archive/html/bug-bash/2018-09/msg00118.html
Chet
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU chet@case.edu http://tiswww.cwru.edu/~chet/