<div dir="ltr">Hello,<div><br></div><div>Sometimes I get backend_fetch_failed for some URL. </div><div>This URL is called by AJAX in POST method.</div><div><br></div><div>The response of this call is empty because it's just log and the content-length = 20. </div><div>And backend response status code = 200<br></div><div><br></div><div><br></div><div>I don't get the error all time, for exemple I can't reproduce from my browser.<br></div><div><br></div><div>I get this error in through std.syslog :</div><div><pre class="" style="border:1px solid rgb(215,215,215);margin-right:1.75em;margin-left:1.75em;padding:0.25em;overflow:auto;color:rgb(51,51,51);font-size:13px;background:rgb(247,247,247)">- BereqMethod POST
- BereqURL /proxy.php?xdp_path=http%3A%2F%2Fmonsite.com%2Fcf_log.php
- BereqProtocol HTTP/1.1
- BereqHeader Accept: application/json, text/javascript, */*; q=0.01
- BereqHeader Content-Type: application/x-www-form-urlencoded; charset=UTF-8
- BereqHeader X-Requested-With: XMLHttpRequest
- BereqHeader Referer:
- BereqHeader Accept-Language: fr-FR,fr;q=0.5
- BereqHeader Accept-Encoding: gzip, deflate
- BereqHeader User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; Trident/7.0; LCJB; rv:11.0) like Gecko
- BereqHeader Content-Length: 635
- BereqHeader DNT: 1
- BereqHeader Cache-Control: no-cache
- BereqHeader Cookie: fofirdId=c652b193-cbff-4a0e-abdf-836087b20393; xtvrn=$390974$; xtan390974=-; xtant390974=1; CF_SESSION_SYNC=1446135592
- BereqHeader X-UA-Device: pc
- BereqHeader X-UA-Device-Simplified: desktop
- BereqHeader Via: 1.1 varnish-v4
- BereqHeader grace: none
- BereqHeader X-Forwarded-For: xx.xx.xx.xx, xx.xx.xx.xx
- BereqHeader Host: <a href="http://monsite.com">monsite.com</a>
- BereqHeader X-Pass: POST request
- BereqHeader X-Pass-D: POST request - hash - Pass
- BereqHeader X-Varnish: 2031880
- VCL_call BACKEND_FETCH
- VCL_return fetch
- BackendOpen 258 backend1(xx.xx.xx.xx,,80) xx.xx.xx.xx 40582
- Backend 258 backend backedn1(xx.xx.xx.xx,,80)
- FetchError req.body read error: 104 (Connection reset by peer)
- FetchError backend write error: 104 (Connection reset by peer)</pre></div><div>Thank you. </div><div><br></div></div>