There are two application servers and a switch. When i access application by using application server ip it works fine. However if i use switch ip in my url Bad request error throws up only for firefox and chrome for a few links only.
This question is related to
request
I just deleted my stored cookies, site data, and cache from my browser... It worked. I'm using firefox...
in my case:
in header
Content-Typespacespace
or
Content-Typetab
with two space or tab
when i remove it then it worked.
I was testing my application with special characters & was observing the same error. After some research, turns out the % symbol was the cause. I had to modify it to the encoded representation %25. Its all fine now, thanks to the below post
Here is a detailed explanation & solution for this problem from ibm.
Problem(Abstract)
Request to HTTP Server fails with Response code 400.
Symptom
Response from the browser could be shown like this:
Bad Request Your browser sent a request that this server could not understand. Size of a request header field exceeds server limit.
HTTP Server Error.log shows the following message: "request failed: error reading the headers"
Cause
This is normally caused by having a very large Cookie, so a request header field exceeded the limit set for Web Server.
Diagnosing the problem
To assist with diagnose of the problem you can add the following to the LogFormat directive in the httpd.conf: error-note: %{error-notes}n
Resolving the problem
For server side: Increase the value for the directive LimitRequestFieldSize in the httpd.conf: LimitRequestFieldSize 12288 or 16384 For How to set the LimitRequestFieldSize, check Increase the value of LimitRequestFieldSize in Apache
For client side: Clear the cache of your web browser should be fine.
In my case is a cookie-related issue, I had many cookies with value extremely big, and that was causing the problem.
You can replicate this issue here on stackoverflow.com, just open the console and type this:
[ ...Array(5) ].forEach((i, idx) => {
document.cookie = `stackoverflow_cookie${idx}=${'a'.repeat(4000)}`;
});
What is that?
I am creating 5 cookies with a string of length or value of 4000 bytes; then reload the page and you will see the same issue.
I tried it on google.com and you'll get the error but they automatically clear the cookies for you, which is a nice fallback to start fresh.
I'm a bit late to the party, but bumped in to this issue whilst working with the openidc auth module.
I ended up noticing that cookies were not being cleared properly, and I had at least 10 mod_auth_openidc_state_... cookies, all of which would be sent by my browser whenever I made a request.
If this sounds familiar to you, double check your cookies!
If you use Apache httpd web server in version above 2.2.15-60, then it could be also because of underscore _ in hostname.
https://ma.ttias.be/apache-httpd-2-2-15-60-underscores-hostnames-now-blocked/
If you are getting this error on the WordPress website, check the below solution.
I got Bad Request, Your browser sent a request that this server could not understand
when I tried to download a file to the target machine using curl.
I solved it by instead using scp to copy the file from the source machine to the
target machine.
Make sure you url encode all of the query params in your url.
In my case there was a space ' ' in my url, and I was making an API call using curl, and my api server was giving this error.
Means the following url
http://somedomain.com?key=some value with space
should be
http://somedomain.com/?key=some%20value%20with%20space
in my magento2 website ,show exactly the same error when click a product,
my solution is to go to edit the value of Search Engine Optimization - URL Key of this product,
make sure that there are only alphabet,number and - in URL Key, such as 100-washed-cotton-duvet-cover-set, deleting all other special characters ,such as % .
Source: Stackoverflow.com