max-initial-line-length does not seem to work as expected

[David Hoffer]

We were using a manually set value for quarkus.http.limits.max-initial-line-length of 4096

but we get 414 errors when the URL portion of this line is over about 2855 characters so the total length is under 2900.  Why does Quarkus think this is over 4096?

-Dave

[David Hoffer]

In my testing I have to set the property to at least 42% more than the number of characters.  So it's not counting chars or bytes.  What is it counting?

-Dave

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[Georgios Andrianakis]

It's counting the total number of bytes of the first HTTP line (it ends up being used by io.netty.handler.codec.http.HttpObjectDecoder).

I tested it and it works as expected.

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[David Hoffer]

Hum, I didn't get that in my testing.  I had to use a value ~42% greater than the number of characters in line 1.  Line 1 is all ASCII so it seems it could be 1 byte per character but I had to set the max at about 1.42 times the number of characters.  My GET URI portion has a very long comma separated list of numbers in the query string.  I don't understand how they are counting bytes.

-Dave

[Sergey Bezrukov]

Each comma will be url-escaped so what it occupied 3 bytes (%2C afaik)

вс, 5 дек. 2021 г., 18:33 David Hoffer <dhof...@gmail.com>:

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[David Hoffer]

Ah, I forgot that comma would be escaped, got it.

-Dave