![]() ![]() Find out about this helpful utility and how you would use it. ![]() Wireshark Review & Alternatives Wireshark is a highly respected packet capture tool. It can be globally applied by modifying the default HTTP profile. Net Admin Wireshark Review & Alternatives We are funded by our readers and may receive a commission when you buy using links on our site. Recommendation that fixed the issue Create a new HTTP profile (Under System > Profiles > HTTP Profiles) with following option enabled “Drop extra data from server” and bind it to the service and that should fix the issue. Set-Cookie: PHPSESSID=2r1iv4qf27c3vrqs48ujemn4u6grbavr9v9na7joune97sju2l41 path=/ HttpOnlyĬache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0įrom the NetScaler nstrace we can see that the problem is with the server sending more than “Content-Length” bytes (There is 2 bytes of more data sent by backend as compared to what is specified in Content-Length header) in the all the responses where the RST is being triggered by NetScaler (Below is the TCP header of the last 200 OK response received from backend): From nstrace we see that when backend sends NETSCALER 200 OK for the GET request the Content Length is as below highlighted:Īccept: text/html,application/xhtml+xml,application/xml q=0.9,image/webp,*/* q=0.8 Number of connections that are not reused because Netscaler received more than content-length amount of data from server. Then backend server starts sending the data which NetScaler starts Ack’ing but in the end we see NetScaler resetting the frontend and backend connection as shown below with RST code 9205 (Follow the frontend and backend stream in WireShark) :Īt the same time we see NetScaler is incrementing following http counters:ħ5 7001 1527735 8 1 http_err_noreuse_link_server Thu Nov 19 08:27:25 2015ħ6 7002 1527743 8 1 http_err_noreuse_link_server Thu Nov 19 08:27:32 2015ħ7 0 34905 2 0 http_err_noreuse_morethanCtLen Thu Nov 19 08:27:32 2015ħ8 7001 1527748 5 0 http_err_noreuse_link_server Thu Nov 19 08:27:39 2015ħ9 0 34907 2 0 http_err_noreuse_morethanCtLen Thu Nov 19 08:27:39 2015Ĭounter Information: http_err_noreuse_morethanCtLen Below troubleshooting steps were taken to further troubleshoot and fix the issue: In the NetScaler trace file we could see that the GET request for the root page is being received from client and NetScaler sent it back to the backend server as well.
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