Re: POST large amount of data causes segmentation fault

If posted size has exceeded, what will happen by SizeLimit?

Thanks



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-----Original-Nachricht-----
Von: Russell Lundberg <[email protected]
<mailto:[email protected]> >
Betreff: Re: POST large amount of data causes segmentation fault
Datum: 09.02.2020, 19:22 Uhr
An: Scott Alexander <[email protected]
<mailto:[email protected]> >
CC: [email protected] <[email protected]
<mailto:[email protected]> >

You might want to have a look at Apache2::SizeLimit instead 
https://perl.apache.org/docs/2.0/api/Apache2/SizeLimit.html
<https://perl.apache.org/docs/2.0/api/Apache2/SizeLimit.html>

You might decide to limit the count if numbers which get submitted with a 
single form.
--
Russell Lundberg
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On Sun, Feb 9, 2020 at 5:57 PM Scott Alexander <[email protected]
<mailto:[email protected]> > wrote:
  Hi,

  I meant I'm posting data from a form, javascript is collecting a series
  of numbers from a <input type=text> as a string.
  Javascript seperates each number with a '/' then I use split within Perl
  to get the list of numbers into an array.

  The length of the URL where the data is being posted to is just 
  send_message01.pl <http://send_message01.pl>
  The length of URL is fine.

  It's the length of the string being posted which causes problems. If I
  reduce it's length then it works.

  I have a <FORM> with list of users and GSM numbers. If that list is about
  600 users it has worked fine. I was testing with about 4000 users when I
  came across this problem.






  Terveisin/Regards
   
  Scott Alexander
  Asiantuntija, järjestelmät  Systems Specialist
   
  Humak
  Humanistinen ammattikorkeakoulu
  University of Applied Sciences
  www.humak.fi <http://www.humak.fi/>
   
  Tel. +358 (0)50 411 9556

  [email protected] <mailto:[email protected]>

  ----------------------------------------------------------------------
  From: Russell Lundberg <[email protected]
  <mailto:[email protected]> >
  Sent: 09 February 2020 12:12
  To: Scott Alexander <[email protected]
  <mailto:[email protected]> >
  Cc: [email protected] <mailto:[email protected]> <
  [email protected] <mailto:[email protected]> >
  Subject: Re: POST large amount of data causes segmentation fault
   
  Scott,

  Are you saying that the incoming request has a length of 42,000+
  characters?

  Apache docs say 8,192 characters is the maximum length of a URL.

  Would it be possible to reduce the length of the request until the
  segmentation fault stops occurring?
  --
  Russell Lundberg
  Latest Blog Post for Telecom Pros:  Are you stuck with a messy mobile
  network?
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  On Sun, Feb 9, 2020 at 4:49 PM Scott Alexander <[email protected]
  <mailto:[email protected]> > wrote:
    Hi,

    I have in my code

    $req = Apache2::Request->new($r);

    My code gets to line 41 then causes a "child pid 13766 exit signal
    Segmentation fault (11)"

    $r->log_error("LINE 41") ;
    @number = split /\//, $req->param("numbers") ;
    $r->log_error("LINE 43") ;

    the incoming numbers contains a string of mobile numbers which in this
    test is 3900 numbers long and each number is 10-12 characters long.
    javascript tells me the length of the posted string is 42260 characters
    long.

    Any idea how to fix this problem?

    httpd -v
    Server version: Apache/2.2.15 (Unix)
    Server built:   Jun 19 2018 15:45:13

    but I get the same error on the production server which is

    Server version: Apache/2.4.6 (CentOS)
    Server built:   Aug  8 2019 11:41:18


    Terveisin/Regards
     
    Scott Alexander
    Asiantuntija, järjestelmät  Systems Specialist
     
    Humak
    Humanistinen ammattikorkeakoulu
    University of Applied Sciences
    www.humak.fi <http://www.humak.fi/>
     
    Tel. +358 (0)50 411 9556

    [email protected] <mailto:[email protected]>