aooohan commented on code in PR #556:
URL: https://github.com/apache/tomcat/pull/556#discussion_r1001286110
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webapps/docs/config/http.xml:
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@@ -525,6 +525,11 @@
the request line, header names and header values. If not specified, this
attribute is set to the value of the <code>maxHttpHeaderSize</code>
attribute.</p>
+ <p>If you see "Request header is too large" errors you can increase this,
+ but be aware that Tomcat will allocate the full amount you specify for
+ every request. For example, if you specify a maxHttpRequestHeaderSize of
+ 1 MB and your application handles 100 concurrent requests, you will see
+ 100 MB of heap consumed by request headers.</p>
Review Comment:
It doesn't affect the understanding, but it's not quite accurate, the buffer
will actually be larger than 100MB due to some additional margins being taken
into account
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