CometD 2.6.0 and Tomcat 7

[Christian]

Hi,

let's say, I want to deploy a webapp using cometD, but I need to run it on tomcat (7). Right now, what do I have to expect?
Can I run my cometD app with tomcat? As I've read, cometD uses some special type of WebsocketTransportProtocol which only works for Jetty.

So does this mean, my app would work like it would on jetty, the only thing I can't use is websockets? What about OOrt?
I guess this is an important question because in big companys like our's I can't decide: Hey, let's try Jetty where all the other App Server are Tomcat's..

Thanks
Christian

[Simone Bordet]

Hi,

On Tue, May 7, 2013 at 11:54 AM, Christian <chriz...@gmail.com> wrote:
> Hi,
>
> let's say, I want to deploy a webapp using cometD, but I need to run it on
> tomcat (7). Right now, what do I have to expect?
> Can I run my cometD app with tomcat? As I've read, cometD uses some special
> type of WebsocketTransportProtocol which only works for Jetty.

Correct.

> So does this mean, my app would work like it would on jetty, the only thing
> I can't use is websockets? What about OOrt?

Oort works the same way: if websocket is available, it uses it,
otherwise falls back to http.

> I guess this is an important question because in big companys like our's I
> can't decide: Hey, let's try Jetty where all the other App Server are
> Tomcat's..

It's not CometD fault if your company has decided to stick to Tomcat, sorry.

CometD is open source, and while everyone is asking for a WebSocket
Tomcat transport, nobody has contributed it.
We have limited resources and we can't do this.

CometD 3 will implement a transport based on JSR 356.
When Jetty9 will have support for 356 (it's on the workings), CometD 3
will have a portable WebSocket transport.
When Tomcat will have support for 356, I don't know. Good luck though.

Again, we're open to contributions.

Michele just got his pull request merged to integrate Jackson 2 (see
https://github.com/cometd/cometd/pull/16).
Florian submitted a pull request that was inspirational to improve
error reporting in 2.6.0.
Just to mention the 2 most recent.

--
Simone Bordet
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[Christian]

Could this be a solution?

https://github.com/Atmosphere/atmosphere/wiki/Getting-started-with-Cometd

Atmosphere will add it's pown servlet instead of the cometD Servlet, to bring portable websocket support to cometD.
See here:
https://github.com/Atmosphere/atmosphere-extensions/blob/master/cometd/modules/src/main/java/org/atmosphere/cometd/CometdServlet.java#L32

So what do you think?

Christian