HA Proxy dropping same response all the time

Dear all.



I am new to the mailing list and mailing for the very first time.

I have a problem with my HA Proxy and would like to have advice to solve the
issue.



Issue is that HA Proxy does not send back the 200 OK response to the client
side.

Below 2 are the example requests I am facing problem.



Oct 14 16:04:56 localhost haproxy[5289]: xxx.xxx.xxx.xxx:49720
[14/Oct/2015:16:04:56.119] http-in iconsole/FC-iConsole 0/0/0/23/25 200
78668 - - --NI 1/1/0/1/0 0/0 "GET
/iConsole/MultiLanguageSvc?Domain=Octon&SYS=iCare&LatestTime=&SVC= HTTP/1.1"

Oct 14 16:04:58 localhost haproxy[5289]: xxx.xxx.xxx.xxx:49721
[14/Oct/2015:16:04:58.179] http-in iconsole/FC-iConsole 0/0/0/110/110 200
3948 - - --NI 1/1/0/1/0 0/0 "GET
/iConsole/iCareLoginSvc?AgentID=91007@xxx&Password=8BA0FC9468973A97956AA8494
62406C2&ExtNo=7603&Lang=ja_JP&SVC= HTTP/1.1"



However, my HA Proxy is sending back the 200 OK to the client for only
second request.

I have checked this via wireshark.



Debug log showed no sign of errors.



00000000:http-in.accept(0004)=0008 from [xxx.xxx.xxx.xxx:49720]

00000000:http-in.clireq[0008:ffffffff]: GET
/Console/MultiLanguageSvc?Domain=Octon&SYS=Care&LatestTime=&SVC= HTTP/1.1

00000000:http-in.clihdr[0008:ffffffff]: Referer: http://
xxx.xxx.xxx.xxx:8085/CareClient/index.html

00000000:http-in.clihdr[0008:ffffffff]: Accept: application/xml, text/xml,
*/*; q=0.01

00000000:http-in.clihdr[0008:ffffffff]: Accept-Language: ja

00000000:http-in.clihdr[0008:ffffffff]: Origin: http:// xxx.xxx.xxx.xxx:8085

00000000:http-in.clihdr[0008:ffffffff]: Accept-Encoding: gzip, deflate

00000000:http-in.clihdr[0008:ffffffff]: User-Agent: Mozilla/5.0 (Windows NT
6.3; WOW64; Trident/7.0; rv:11.0) like Gecko

00000000:http-in.clihdr[0008:ffffffff]: Host: xxx.xxx.xxx.xxx:8085

00000000:http-in.clihdr[0008:ffffffff]: DNT: 1

00000000:http-in.clihdr[0008:ffffffff]: Connection: Keep-Alive

00000000:http-in.clihdr[0008:ffffffff]: Cache-Control: no-cache

00000000:iconsole.srvrep[0008:0009]: HTTP/1.1 200 OK

00000000:iconsole.srvhdr[0008:0009]: Cache-Control:

00000000:iconsole.srvhdr[0008:0009]: Pragma:

00000000:iconsole.srvhdr[0008:0009]: Expires: Wed, 31 Dec 1969 23:59:59 GMT

00000000:iconsole.srvhdr[0008:0009]: Content-Type: text/xml;charset=utf-8

00000000:iconsole.srvhdr[0008:0009]: Content-Length: 78470

00000000:iconsole.srvhdr[0008:0009]: Date: Wed, 14 Oct 2015 07:04:56 GMT

00000000:iconsole.srvhdr[0008:0009]: Server: MMCC

00000001:http-in.clicls[0008:0009]

00000001:http-in.closed[0008:0009]

00000002:http-in.accept(0004)=0008 from [xxx.xxx.xxx.xxx:49721]

00000002:http-in.clireq[0008:ffffffff]: GET
/Console/CareLoginSvc?AgentID=91007@xxx&Password=8BA0FC9468973A97956AA849462
406C2&ExtNo=7603&Lang=ja
_JP&SVC= HTTP/1.1

00000002:http-in.clihdr[0008:ffffffff]: Referer: http://
xxx.xxx.xxx.xxx:8085/iCareClient/index.html

00000002:http-in.clihdr[0008:ffffffff]: Accept: application/xml, text/xml,
*/*; q=0.01

00000002:http-in.clihdr[0008:ffffffff]: Accept-Language: ja

00000002:http-in.clihdr[0008:ffffffff]: Origin: http:// xxx.xxx.xxx.xxx:8085

00000002:http-in.clihdr[0008:ffffffff]: Accept-Encoding: gzip, deflate

00000002:http-in.clihdr[0008:ffffffff]: User-Agent: Mozilla/5.0 (Windows NT
6.3; WOW64; Trident/7.0; rv:11.0) like Gecko

00000002:http-in.clihdr[0008:ffffffff]: Host: xxx.xxx.xxx.xxx:8085

00000002:http-in.clihdr[0008:ffffffff]: DNT: 1

00000002:http-in.clihdr[0008:ffffffff]: Connection: Keep-Alive

00000002:http-in.clihdr[0008:ffffffff]: Cache-Control: no-cache

00000002:iconsole.srvrep[0008:0009]: HTTP/1.1 200 OK

00000002:iconsole.srvhdr[0008:0009]: Cache-Control:

00000002:iconsole.srvhdr[0008:0009]: Pragma:

00000002:iconsole.srvhdr[0008:0009]: Expires: Wed, 31 Dec 1969 23:59:59 GMT

00000002:iconsole.srvhdr[0008:0009]: Content-Type: text/xml;charset=utf-8

00000002:iconsole.srvhdr[0008:0009]: Content-Length: 3751

00000002:iconsole.srvhdr[0008:0009]: Date: Wed, 14 Oct 2015 07:04:58 GMT

00000002:iconsole.srvhdr[0008:0009]: Server: MMCC

00000003:http-in.clicls[0008:0009]

00000003:http-in.closed[0008:0009]



Could someone give me advice where to start with to solve the problem?



Best Regards,

Yu Watanabe