zssapp, import files: \\zssdemo2\tomcat7\webapps-8082\zssvalidator\WEB-INF\books\09232014_1924786.xlsx

1. Select sheet "YearlyReport", client

POST http://localhost:8080/zssapp/zkau

— Request Form —
dtid:z_pu10
cmd_0:onSheetSelect
uuid_0:l7rA21
data_0:

{"sheetId":"w7_sheet_4","cache":false,"row":-1,"col":-1,"left":-1,"top":-1,"right":-1,"bottom":-1,"hleft":-1,"htop":-1,"hright":-1,"hbottom":-1,"frow":-1,"fcol":-1}

2. Then Server response client server push like crazy every 2ms
http://localhost:8080/zssapp/zkau/comet?dtid=z_pu10

— Response Headers —
Content-Language:en-US
Content-Length:0
Server:Jetty(6.1.26)
ZK-Comet:echo

and step 1 has not response yet; server push run ten thousand times (on my notebook in 1.4 minutes) which accumulate a lot of zk-comet echo requst in client side.

3. step 1 finally done and zk-comet echo accumulate a Big Form and send to server

cmd_0: dummy
opt_0: i

...
cmd_10038: dummy
opt_10038: i

The server(Jetty) complains "Form too large340897>200000" and response with 500. Step 3 fail.

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Looks like that if EventQueue is under Application Scope, server will response to server push request to ALL clients without filter out the one that is doing operation and response too much zk-comet-echo request to client and cause it to death.