Recent testing on the iPhone from a single page HTML application shows what appears to be an accumulation of pushIDs. Additionally, the JavaScript console indicated that the connection was lost even though a response was received. I'll test further with an updated icepush.jar.
POST /push/listen.icepush HTTP/1.1
Host: labs.icesoft.com
Accept-Language: en-us
User-Agent: Mozilla/5.0 (iPhone; CPU iPhone OS 7_0 like Mac OS X) AppleWebKit/537.51.1 (KHTML, like Gecko) Version/7.0 Mobile/11A465 Safari/9537.53
ice.push.sequence: 1
Accept: /
Referer: http://labs.icesoft.com/bridgeit/mobile.html
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
ice.push.window: 8117c
ice.push.browser: bhlyavwm8
Connection: keep-alive
Cookie: ice.connection.contextpath=http%3A%2F%2Flabs.icesoft.com%2Fpush%2F; ice.connection.lease=1380151919277; ice.connection.running=8117c%3Aacquired; ice.pushids=bhlyavwm8%3A1h4%20bhlyavwm8%3A1h5%20bhlyavwm8%3A1h8%20bhlyavwm8%3A1h9%20bhlyavwm8%3A1hg%20bhlyavwm8%3A1hh%20bhlyavwm8%3A1hi%20bhlyavwm8%3A1hj%20bhlyavwm8%3A1i6%20bhlyavwm8%3A1i7%20bhlyavwm8%3A1ic%20bhlyavwm8%3A1id%20bhlyavwm8%3A1ie%20bhlyavwm8%3A1if%20bhlyavwm8%3A1kn%20bhlyavwm8%3A1ko%20bhlyavwm8%3A1kx%20bhlyavwm8%3A1ky%20bhlyavwm8%3A1kz%20bhlyavwm8%3A1l0
Content-Length: 566
Origin: http://labs.icesoft.com
Accept-Encoding: gzip, deflate
ice.push.browser=bhlyavwm8&ice.pushid=bhlyavwm8%3A1h4&ice.pushid=bhlyavwm8%3A1h5&ice.pushid=bhlyavwm8%3A1h8&ice.pushid=bhlyavwm8%3A1h9&ice.pushid=bhlyavwm8%3A1hg&ice.pushid=bhlyavwm8%3A1hh&ice.pushid=bhlyavwm8%3A1hi&ice.pushid=bhlyavwm8%3A1hj&ice.pushid=bhlyavwm8%3A1i6&ice.pushid=bhlyavwm8%3A1i7&ice.pushid=bhlyavwm8%3A1ic&ice.pushid=bhlyavwm8%3A1id&ice.pushid=bhlyavwm8%3A1ie&ice.pushid=bhlyavwm8%3A1if&ice.pushid=bhlyavwm8%3A1kn&ice.pushid=bhlyavwm8%3A1ko&ice.pushid=bhlyavwm8%3A1kx&ice.pushid=bhlyavwm8%3A1ky&ice.pushid=bhlyavwm8%3A1kz&ice.pushid=bhlyavwm8%3A1l0
HTTP/1.1 200 OK
Date: Wed, 25 Sep 2013 23:31:04 GMT
Server: Apache-Coyote/1.1
Access-Control-Expose-Headers: ice.push.sequence,X-Connection,X-Connection-reason,X-Set-Window-Cookie,ice.push.heartbeatTimestamp
Access-Control-Allow-Headers: origin, ice.push.sequence, ice.push.window, ice.push.browser, content-type, ice.parkids, ice.notifyBack
Access-Control-Allow-Origin: https://labs.icesoft.com
Access-Control-Allow-Credentials: true
ice.push.sequence: 1680
X-Connection-reason: response timeout
Cache-Control: no-cache
Cache-Control: no-store
Cache-Control: must-revalidate
Pragma: no-cache
Expires: 0
Content-Type: text/xml;charset=UTF-8
Content-Length: 9
Connection: close
<noop/>
Recent testing on the iPhone from a single page HTML application shows what appears to be an accumulation of pushIDs. Additionally, the JavaScript console indicated that the connection was lost even though a response was received. I'll test further with an updated icepush.jar.
POST /push/listen.icepush HTTP/1.1
Host: labs.icesoft.com
Accept-Language: en-us
User-Agent: Mozilla/5.0 (iPhone; CPU iPhone OS 7_0 like Mac OS X) AppleWebKit/537.51.1 (KHTML, like Gecko) Version/7.0 Mobile/11A465 Safari/9537.53
ice.push.sequence: 1
Accept: /
Referer: http://labs.icesoft.com/bridgeit/mobile.html
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
ice.push.window: 8117c
ice.push.browser: bhlyavwm8
Connection: keep-alive
Cookie: ice.connection.contextpath=http%3A%2F%2Flabs.icesoft.com%2Fpush%2F; ice.connection.lease=1380151919277; ice.connection.running=8117c%3Aacquired; ice.pushids=bhlyavwm8%3A1h4%20bhlyavwm8%3A1h5%20bhlyavwm8%3A1h8%20bhlyavwm8%3A1h9%20bhlyavwm8%3A1hg%20bhlyavwm8%3A1hh%20bhlyavwm8%3A1hi%20bhlyavwm8%3A1hj%20bhlyavwm8%3A1i6%20bhlyavwm8%3A1i7%20bhlyavwm8%3A1ic%20bhlyavwm8%3A1id%20bhlyavwm8%3A1ie%20bhlyavwm8%3A1if%20bhlyavwm8%3A1kn%20bhlyavwm8%3A1ko%20bhlyavwm8%3A1kx%20bhlyavwm8%3A1ky%20bhlyavwm8%3A1kz%20bhlyavwm8%3A1l0
Content-Length: 566
Origin: http://labs.icesoft.com
Accept-Encoding: gzip, deflate
ice.push.browser=bhlyavwm8&ice.pushid=bhlyavwm8%3A1h4&ice.pushid=bhlyavwm8%3A1h5&ice.pushid=bhlyavwm8%3A1h8&ice.pushid=bhlyavwm8%3A1h9&ice.pushid=bhlyavwm8%3A1hg&ice.pushid=bhlyavwm8%3A1hh&ice.pushid=bhlyavwm8%3A1hi&ice.pushid=bhlyavwm8%3A1hj&ice.pushid=bhlyavwm8%3A1i6&ice.pushid=bhlyavwm8%3A1i7&ice.pushid=bhlyavwm8%3A1ic&ice.pushid=bhlyavwm8%3A1id&ice.pushid=bhlyavwm8%3A1ie&ice.pushid=bhlyavwm8%3A1if&ice.pushid=bhlyavwm8%3A1kn&ice.pushid=bhlyavwm8%3A1ko&ice.pushid=bhlyavwm8%3A1kx&ice.pushid=bhlyavwm8%3A1ky&ice.pushid=bhlyavwm8%3A1kz&ice.pushid=bhlyavwm8%3A1l0
HTTP/1.1 200 OK
Date: Wed, 25 Sep 2013 23:31:04 GMT
Server: Apache-Coyote/1.1
Access-Control-Expose-Headers: ice.push.sequence,X-Connection,X-Connection-reason,X-Set-Window-Cookie,ice.push.heartbeatTimestamp
Access-Control-Allow-Headers: origin, ice.push.sequence, ice.push.window, ice.push.browser, content-type, ice.parkids, ice.notifyBack
Access-Control-Allow-Origin: https://labs.icesoft.com
Access-Control-Allow-Credentials: true
ice.push.sequence: 1680
X-Connection-reason: response timeout
Cache-Control: no-cache
Cache-Control: no-store
Cache-Control: must-revalidate
Pragma: no-cache
Expires: 0
Content-Type: text/xml;charset=UTF-8
Content-Length: 9
Connection: close
<noop/>