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tls: group chunks into TLS segments by mildsunrise · Pull Request #27861 · nodejs/node

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May 24, 2019

addaleax

ryzokuken

@mildsunrise 

TLSWrap::DoWrite() now concatenates data chunks and makes a single
call to SSL_write(). Grouping data into a single segment:

- reduces network overhead: by factors of even 2 or 3 in usages
  like `http2` or `form-data`

- improves security: segment lengths can reveal lots of info, i.e.
  with `form-data`, how many fields are sent and the approximate length
  of every individual field and its headers

- reduces encryption overhead: a quick benchmark showed a ~30% CPU time
  decrease for an extreme case, see
  nodejs#27573 (comment)

Fixes: nodejs#27573

ryzokuken pushed a commit that referenced this pull request

May 29, 2019 
TLSWrap::DoWrite() now concatenates data chunks and makes a single
call to SSL_write(). Grouping data into a single segment:

- reduces network overhead: by factors of even 2 or 3 in usages
  like `http2` or `form-data`

- improves security: segment lengths can reveal lots of info, i.e.
  with `form-data`, how many fields are sent and the approximate length
  of every individual field and its headers

- reduces encryption overhead: a quick benchmark showed a ~30% CPU time
  decrease for an extreme case, see
  #27573 (comment)

Fixes: #27573

PR-URL: #27861
Reviewed-By: Fedor Indutny <fedor.indutny@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Ujjwal Sharma <usharma1998@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>

targos pushed a commit that referenced this pull request

May 31, 2019 
TLSWrap::DoWrite() now concatenates data chunks and makes a single
call to SSL_write(). Grouping data into a single segment:

- reduces network overhead: by factors of even 2 or 3 in usages
  like `http2` or `form-data`

- improves security: segment lengths can reveal lots of info, i.e.
  with `form-data`, how many fields are sent and the approximate length
  of every individual field and its headers

- reduces encryption overhead: a quick benchmark showed a ~30% CPU time
  decrease for an extreme case, see
  #27573 (comment)

Fixes: #27573

PR-URL: #27861
Reviewed-By: Fedor Indutny <fedor.indutny@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Ujjwal Sharma <usharma1998@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>

mildsunrise added a commit to mildsunrise/node that referenced this pull request

Jul 30, 2019 
TLSWrap::DoWrite() now concatenates data chunks and makes a single
call to SSL_write(). Grouping data into a single segment:

- reduces network overhead: by factors of even 2 or 3 in usages
  like `http2` or `form-data`

- improves security: segment lengths can reveal lots of info, i.e.
  with `form-data`, how many fields are sent and the approximate length
  of every individual field and its headers

- reduces encryption overhead: a quick benchmark showed a ~30% CPU time
  decrease for an extreme case, see
  nodejs#27573 (comment)

Fixes: nodejs#27573

PR-URL: nodejs#27861
Reviewed-By: Fedor Indutny <fedor.indutny@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Ujjwal Sharma <usharma1998@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>

BethGriggs pushed a commit that referenced this pull request

Oct 7, 2019 
TLSWrap::DoWrite() now concatenates data chunks and makes a single
call to SSL_write(). Grouping data into a single segment:

- reduces network overhead: by factors of even 2 or 3 in usages
  like `http2` or `form-data`

- improves security: segment lengths can reveal lots of info, i.e.
  with `form-data`, how many fields are sent and the approximate length
  of every individual field and its headers

- reduces encryption overhead: a quick benchmark showed a ~30% CPU time
  decrease for an extreme case, see
  #27573 (comment)

Fixes: #27573

Backport-PR-URL: #28904
PR-URL: #27861
Reviewed-By: Fedor Indutny <fedor.indutny@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Ujjwal Sharma <usharma1998@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>