Connect via opensslopenssl s_client -connect okboomer.tasteless.eu:10401
Send GET requestGET / HTTP/1.1Host: okboomer.tasteless.eu
In the Header:Flag: `tstlss{always keep looking}`
Note: This was not visible in the developer console or with python requests. This was because it was a trailing header. Trailing headers are sent after the content with a zero length chunk.