Cannot remove Jetty HTTP server header for invalid request

[philippeu]

Hello,
it is possible to overwrite the jetty server header by setting the agent on server info (restlet 2.3.2)

getServerInfo().setAgent("toto");

it seems to work only for requests reaching the server resource.
If restlet received the following request

GET / TOTO/1.0

the following response is sent

HTTP/1.1 400 Unknown Version
Content-Length: 0
Connection: close
Server: Jetty(9.2.10.v20150310)

Is there a way to remove the HTTP server header for such case?
thanks

[thboileau]

Hi @philippeu , I've just made a test and it works for me using RF 2.3.2.
I see that the 2.3.2 released is associated with a distinct version of Jetty 9.2.6.v20141205, instead of 9.2.10.v20150310.
I wonder where do you set up the server name?

[philippeu]

Hi Thierry,
I have updated jetty to 9.2.10 to get some security patches required in my project.
I rolled back to 9.2.6 but i have the same behavior

HTTP/1.1 400 Unknown Version
Content-Length: 0
Connection: close
Server: Jetty(9.2.6.v20141205)

for your information, i'm testing with

nmap -T4 -n -Pn -sV <ip> -p <port>

telnet is also doing the job

[thboileau]

Thanks @philippeu
I notice the following:

• when using curl (nb: the date header is set twice, I have to fix this):

curl -i http://localhost:8182/
HTTP/1.1 200 OK
Date: Sat, 05 Sep 2015 08:21:41 GMT
Content-Type: text/plain; charset=UTF-8
Date: Sat, 05 Sep 2015 08:21:41 GMT
Server: Restlet-Framework/2.3.2

• when using nmap:

nmap -T4 -n -Pn -sV localhost -p 8182

Starting Nmap 6.40 ( http://nmap.org ) at 2015-09-05 10:18 CEST
Nmap scan report for localhost (127.0.0.1)
Host is up (0.000099s latency).
PORT     STATE SERVICE VERSION
8182/tcp open  http    Jetty 9.2.6.v20141205