Chunked requests

I have a problem calling WS on CF. I created a simple WS, which accepts PDF file (as a BASE64 string parameter).

I user SOAP UI to test it. If I call it normally it works. But if I use chunked mode, I don't get parameters.

I also try CF on Apache instead of IIS, but it also doesn't work.

Also Lucee + IIS doesn't work. Only Lucee + Apache works fine.

I can't use only normal mode for calling, because the WS will be for external user, which allways uses chunked mode!

thx for ideas, how to solve this.