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December 10, 2018

Your browser sent a request that this server could not understand

Filed under: Linux — Tags: , , , — admin @ 4:51 pm

Well today I am facing another problem.

Got this answer on a apache behind a proxy .

400 Bad Request
Bad Request
Your browser sent a request that this server could not understand.
Size of a request header field exceeds server limit.

So .. it appear the header that is received by webserver is bigger then normal .

Solution is to increase it .

LimitRequestFieldSize 32760
LimitRequestLine 32760

Please note that is loaded from first VirtualHost.

One solution is to tested with this

curl -v -H “CustomHeader: `printf ‘1%.0s’ {1..n}`” localhost

Where n can be replace with a value of for example 20000

 

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