Thank you for your answer. Here is my log after the request, my request, my response and my nginx.conf
root@vps190138:~# cat /var/log/nginx-error.log
2016/03/04 15:49:02 [notice] 8990#0: using the "epoll" event method
2016/03/04 15:49:02 [notice] 8990#0: nginx/1.8.1
2016/03/04 15:49:02 [notice] 8990#0: OS: Linux 3.13.0-66-generic
2016/03/04 15:49:02 [notice] 8990#0: getrlimit(RLIMIT_NOFILE): 1024:4096
2016/03/04 15:49:02 [notice] 8991#0: start worker processes
2016/03/04 15:49:02 [notice] 8991#0: start worker process 8993
#REQUEST
AT+CIPSTART="TCP", "myhost.com","80"
AT+CIPSEND=150
POST /devices/deviceRegister HTTP/1.1
Host: myhost.com
Cache-Control: no-cache
Content-Type: application/json
Content-Length:14
{"IMEI":"aa"}
#RESPONSE
SEND OK
HTTP/1.1 400 Bad Request
Server: nginx/1.8.1
Date: Fri, 04 Mar 2016 15:52:21 GMT
Content-Type: text/html
Content-Length: 172
Connection: close
<html>
<head><title>400 Bad Request</title></head>
<body bgcolor="white">
<center><h1>400 Bad Request</h1></center>
<hr><center>nginx/1.8.1</center>
</body>
</html>
nginx.conf
Description: Binary data
> Le 4 mars 2016 à 17:24, Valentin V. Bartenev <vb...@nginx.com> a écrit : > > On Friday 04 March 2016 17:20:18 Giulio Loffreda wrote: >> Hi All, >> >> If I’m sending this email to wrong list, apologies and give me the good one. >> >> I have one embedded application which needs to connect via TCP and send an >> HTTP request. >> We run Nginx on Ubuntu 14.04. >> >> I can connect and persist, but once the packet is sent, I get HTTP 400 >> without any log and without web server taking the request. >> >> I think it is a deeper level on Nginx but having hard to find a good answer. >> >> Hope somebody can help. >> > [..] > > The reason of 400 is usually logged on "info" level in error_log. > > See: http://nginx.org/r/error_log > > wbr, Valentin V. Bartenev > > _______________________________________________ > nginx mailing list > nginx@nginx.org > http://mailman.nginx.org/mailman/listinfo/nginx
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