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From "Dunkin, Nick" <>
Subject Re: Help understanding a connection error log meaning
Date Fri, 15 Jun 2018 15:29:02 GMT
Hi Alan,

I recently built 7.1.3.  I’ll try with that.



From: Alan Carroll <>
Reply-To: "" <>
Date: Friday, June 15, 2018 at 10:59 AM
To: "" <>
Subject: Re: Help understanding a connection error log meaning

This is known bug. The response was a 502 but the reason was not updated correctly. See

It should be fixed for 8.0. I would think it would be fixed in 7.1.3.

On Fri, Jun 15, 2018 at 9:48 AM, Dunkin, Nick <<>>
Good morning,

I’m running some load tests and I’m seeing the following in the error.log.

20180615.09h25m11s RESPONSE: sent xx.xx.xx.xx status 502 (Connect Error <Success/0>)
for 'http://MyServer:80/MyPath'

(I’ve removed my IP address and path from the above log entry, but that shouldn’t matter
for this question.)

I’d like to understand the meaning of Connect Error <Success/0>.  Specifically the
Success/0 bit.

Looking in the code I see the following (in

snprintf(reason_buffer, buf_len, "Connect Error <%s/%d>", get_error_string(s->cause_of_death_errno),

(where s is of type State*)
So, cause_of_death_errno is clearly 0.  I’d like to understand what this means, can anyone
direct me to some documentation or code?

This if 7.0.0

I’m sure this is a legitimate issue with my Origin, not Traffic Server and I’d just understand
more about the error condition.

Many thanks,


Nick Dunkin
Principal Engineer
o:   678.258.4071
4375 River Green Pkwy # 100, Duluth, GA<,+Duluth,+GA+30096,+USA&entry=gmail&source=g>
30096, USA<,+Duluth,+GA+30096,+USA&entry=gmail&source=g>

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