# Warning Http Parser : Header is too large 8194\>8192

**URL:** <https://forum.inductiveautomation.com/t/warning-http-parser-header-is-too-large-8194-8192/105194>\
**Category:** Ignition\
**Tags:** perspective, ignition81\
**Created:** [April 16, 2025, 7:23pm UTC](https://forum.inductiveautomation.com/t/warning-http-parser-header-is-too-large-8194-8192/105194 "2025-04-16T19:23:53Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![mazeyrat](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mazeyrat/32/10955_2.png) [@mazeyrat](https://forum.inductiveautomation.com/u/mazeyrat)\
**Post date:** [April 16, 2025, 7:23pm UTC](https://forum.inductiveautomation.com/t/warning-http-parser-header-is-too-large-8194-8192/105194/1 "2025-04-16T19:23:53Z")

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Ignition 8.1.47  
Sometime we have this warning on the gateway.  
Any idea for the cause ?

(org.eclipse.jetty.http.HttpParser)

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/d/8/d87b64311c3ba550261ecc9d6bf67f25acd6a6ab.png)

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**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\
**Post date:** [April 16, 2025, 8:43pm UTC](https://forum.inductiveautomation.com/t/warning-http-parser-header-is-too-large-8194-8192/105194/2 "2025-04-16T20:43:53Z")

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Any chance you have a security scanner or some other kind of appliance inside your network trying to probe for vulnerable webservers?

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**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [April 16, 2025, 8:47pm UTC](https://forum.inductiveautomation.com/t/warning-http-parser-header-is-too-large-8194-8192/105194/3 "2025-04-16T20:47:18Z")

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In this recent post about something similar I suggested some loggers you can turn on that might let you figure out the source of these: [[8.1.44] Flood of org.eclipse.jetty.http.BadMessageException: 400: No Host - #7 by Kevin.Herron](https://forum.inductiveautomation.com/t/8-1-44-flood-of-org-eclipse-jetty-http-badmessageexception-400-no-host/104107/7)

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**Author:** ![mazeyrat](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mazeyrat/32/10955_2.png) [@mazeyrat](https://forum.inductiveautomation.com/u/mazeyrat)\
**Post date:** [April 17, 2025, 5:29am UTC](https://forum.inductiveautomation.com/t/warning-http-parser-header-is-too-large-8194-8192/105194/4 "2025-04-17T05:29:42Z")

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Yes we have a vpn tunnel with another site, it could be something like a security scanner. We will try to investiqate with the logger when it occur. Thanks !