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A
ACS LLC
Inspiring
March 26, 2018
Answered

An established connection was aborted by the software in your host machine

  • March 26, 2018
  • 3 replies
  • 24646 views

Since moving to CF2016 I've been seeing quite a lot of the error below in the exception log file. I did some research and can't quite figure out what is going on and if this is indeed having an impact on the end user. I've tested the download link on http://www.hiddentoolbox.com and it appears to work fine

"Error","ajp-nio-8016-exec-6","03/26/18","11:55:46","myapp","The cause of this output exception was that: org.apache.catalina.connector.ClientAbortException: java.io.IOException: An established connection was aborted by the software in your host machine. The specific sequence of files included or processed is: C:\ACS\hiddentoolbox\downloadfile.cfm, line: 15 "

coldfusion.tagext.OutputException: The cause of this output exception was that: org.apache.catalina.connector.ClientAbortException: java.io.IOException: An established connection was aborted by the software in your host machine.

I was wondering if this is as simple as people closing their browser before the download is completed, although I could not replicate myself by starting and closing a browser before it had completed.

Could anybody help throw some light on it?

Thanks

Mark

This topic has been closed for replies.
Correct answer ACS LLC

It does indeed work without the CFABORT and plain text, giving this (Will change to this as the right answer)

 

<cftry>
<cfcontent type="application/unknown" file="#downloadlocation#\toolbox.exe" />
<cfcatch>
</cfcatch>
</cftry>

 

3 replies

D
Dave Watts
Community Expert
January 23, 2020

I'd recommend that you remove the CFABORT and the plain text output in your CFCATCH - or at least try that and see if it's happening. I can easily see that breaking some clients downloading your files.

 

Dave Watts, Eidolon LLC

Dave Watts, Eidolon LLC
James Moberg
James Moberg
Inspiring
January 23, 2020

@dave AFAIK the client has already terminated the connection at this point and is not in the process of downloading anything. If the client is no longer downloading, the download has already been broken.

 

In ACF9 & 10 (we didn't use CF11), when the connection was aborted by the client, no CF error was thrown or logged.

 

We added logging, text and an ABORT just to be safe.  Since the process doesn't stop because of the error, we wanted to be 100% sure that the CATCH aborted and didn't continue with any logic that may follow the CFContent-download.

D
Dave Watts
Community Expert
January 23, 2020

Sure, when CFCONTENT runs it aborts the connection. So, now you have another abort connection request right after that. I don't think it should affect most clients, but at the level of TCP SYN and ACK messages being sent between the client and server I'm not sure what would happen. That's the only reason I suggested removing the plain text and CFABORT.

 

Dave Watts, Eidolon LLC

Dave Watts, Eidolon LLC
BKBK
BKBK
Community Expert
January 6, 2020

We might be able to throw some light on the matter if shared with us the code that caused the error. Namely:

C:\ACS\hiddentoolbox\downloadfile.cfm, line: 15 

Was it the cfcontent line you posted later?

 

A
ACS LLCAuthor
Inspiring
January 6, 2020

Here's the code

 

<CFIF #ISDefined('url.aff')# AND #ISDefined('url.sub1')#>
<CFCOOKIE NAME="aff" VALUE="#val(URL.aff)#" expires="never">
<CFCOOKIE NAME="sub1" VALUE="#left(URL.sub1,50)#" expires="never">
</CFIF>

<cfparam name="cookie.aff" default="0">
<cfparam name="cookie.sub1" default="0">


<CFSET downloadfilename = "HiddenToolboxInstaller" & "_a" & "#cookie.aff#" & "_r" & "#left(urldecode(cookie.sub1),50)#">

<cffile action = "append" file = "c:\acs\hiddentoolbox\control\logs\downloadfile_cfm.txt" attributes = "normal" output = "AFF:#cookie.aff# - SUB1:#cookie.sub1# - #now()# - #remote_addr# - #CGI.HTTP_USER_AGENT#">

<cfheader name="Content-Disposition" value="attachment; filename=#downloadfilename#.exe" />
<cfcontent type="application/x-msdownload" file="#downloadlocation#\toolbox.exe" />

 

 

D
Dave Watts
Community Expert
January 6, 2020

I'm going to make a suggestion. I'm not even sure I like this suggestion, but here goes. You might try making your download page unavailable to regular HTTP GET requests. Put it behind a form or something. Your problematic clients probably won't go through the form. And you might be able to capture some useful information along the way.

 

Dave Watts, Eidolon LLC

Dave Watts, Eidolon LLC
A
ACS LLCAuthor
Inspiring
September 20, 2018

I took another look at this and it appears to be the use of CFCONTENT.

I have a simple page with:

<cfheader name="Content-Disposition" value="attachment; filename=#downloadfilename#.exe" />

<cfcontent type="application/x-msdownload" file="#downloadlocation#\toolbox.exe" />

The code does function, the EXE is triggered for download, and yet I'm getting all these errors in the log file

Does anybody have any idea why?

WolfShade
WolfShade
Brainiac
September 20, 2018

We have been seeing this, too.  A lot.  I, also, have not been able to reconcile what is happening.  We have keyword searchable PDFs, and it is always a user clicking on a link to view a PDF that is triggering it.

V/r,

^ _ ^

A
ACS LLCAuthor
Inspiring
September 20, 2018

It certainly was not there on CF8. No idea at all what's causing it and I can't find any other posts either.

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