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Maximum Size of HTTP Header Values
Most web servers have their own set of size limits on HTTP request headers. The HTTP Header values are restricted by server implementations. The following are the limits of some of the most popular web servers −
Web Server |
Size Limit |
---|---|
Apache |
8K |
Nginx |
4K-8K |
IIS |
8K-16K |
Tomcat |
8K – 48K |
If the header size exceeds the above limit, the server returns 413 Entity Too Large error.
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