zxchat video call "empty response"

Hi there,

I am having problems establishing a video call between users. My installation is as follows.

Zimbra Release 8.6.0_GA_1153.RHEL6_64_20141215151155 RHEL6_64 FOSS edition, Patch 8.6.0_P6
zxchat version 1.35

Firefox 45 (mac ox) and Firefox 47 (ubuntu) client

linux client starts video call

mac os client asks to share cam and mic

mac os client accepts to share cam and mic

mac os client detects invitation and asks to accept or decline

mac os client accepts invitation

with the local cam display shown both clients just wait to establish the video call

video call won't start , connection is dropped if one client closes the dock chat window

below is the dev js console output which gives "empty response" error but i have no idea where the error is coming from. What might be the culprit?

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This site makes use of a SHA-1 Certificate; it's recommended you use certificates with signature algorithms that use hash functions stronger than SHA-1.[Learn More] /

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Loading package: MailCore AjxDispatcher.js:266:46

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Loading package: ContactsCore AjxDispatcher.js:266:46

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Loading package: Startup2 AjxDispatcher.js:266:46

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Loading package: CalendarCore, Calendar AjxDispatcher.js:266:46
KBFF focused for DwtText (zclv-mainText) DwtKeyboardMgr.js:732:3

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Loading package: Zimlet AjxDispatcher.js:266:46

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Loading package: Alert AjxDispatcher.js:266:46
13-6-2016 14:0:17,602 LOG [DevEngine] com_zextras_chat_bundle.js:4953
Installed v0.1.0 com_zextras_chat_bundle.js:4964:10
13-6-2016 14:0:17,668 LOG [ZxChatZimlet] com_zextras_chat_bundle.js:4953
ZxChat Stable Mode com_zextras_chat_bundle.js:4964:10
13-6-2016 14:0:17,972 LOG [ZxChatZimletBase] com_zextras_chat_bundle.js:4953
Zimbra patched com_zextras_chat_bundle.js:4964:10
Error: Raven has not been configured. com_zextras_chat_bundle.js:7510:10

13-6-2016 14:0:18,58 LOG [Groups data loaded] com_zextras_chat_bundle.js:4953
Array [ ] com_zextras_chat_bundle.js:4964:10
13-6-2016 14:0:18,209 LOG [MainWindow.onShellResize] com_zextras_chat_bundle.js:4953
Object { oldX: -123456789, oldY: -123456789, oldWidth: 0, oldHeight: 0, newX: -123456789, newY: -123456789, newWidth: 1407, newHeight: 509, type: null } com_zextras_chat_bundle.js:4964:10

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Loading package: Contacts AjxDispatcher.js:266:46
13-6-2016 14:0:18,315 WARN [] com_zextras_chat_bundle.js:4953
Groups data reset com_zextras_chat_bundle.js:4960:10
13-6-2016 14:0:18,344 LOG [DosFiler] com_zextras_chat_bundle.js:4953
Flushing... com_zextras_chat_bundle.js:4964:10
13-6-2016 14:0:18,420 LOG [Session Registered] com_zextras_chat_bundle.js:4953
Object { code: 17, _hasResponse: true, creationTime: 1468407618420, sessionId: "78a7c527-7d7c-4edd-ad90-c338613a4a05", serverVersion: Object, reqZimletVersion: Object, historyEnabled: true, removeBrand: true, videoChatEnabled: true, silentErrorReportingEnabled: false } com_zextras_chat_bundle.js:4964:10
13-6-2016 14:0:18,534 LOG [Received an event on ping] com_zextras_chat_bundle.js:4953
Object { code: 3, _hasResponse: true, creationTime: 1468407618534, statuses: Array[4] } com_zextras_chat_bundle.js:4964:10
13-6-2016 14:0:18,550 LOG [Received an event on ping] com_zextras_chat_bundle.js:4953
Object { code: 7, _hasResponse: true, creationTime: 1468407618548, buddies: Array[12] } com_zextras_chat_bundle.js:4964:10
13-6-2016 14:0:18,613 LOG [Received an event on ping] com_zextras_chat_bundle.js:4953
Object { code: 4, _hasResponse: true, creationTime: 1468407618613, sender: "zmtest@mydomain.com", senderResource: "78a7c527-7d7c-4edd-ad90-c338613a4a05", eventDate: Date 2016-07-13T11:00:18.941Z, status: Object } com_zextras_chat_bundle.js:4964:10
13-6-2016 14:0:18,617 LOG [Received contact information event] com_zextras_chat_bundle.js:4953
Object { code: 4, _hasResponse: true, creationTime: 1468407618613, sender: "zmtest@mydomain.com", senderResource: "78a7c527-7d7c-4edd-ad90-c338613a4a05", eventDate: Date 2016-07-13T11:00:18.941Z, status: Object } com_zextras_chat_bundle.js:4964:10
13-6-2016 14:0:18,619 LOG [Received an event on ping] com_zextras_chat_bundle.js:4953
Object { code: 4, _hasResponse: true, creationTime: 1468407618619, sender: "myuser.com@mydomain.com", senderResource: "82b8c644-1f25-4787-a5f3-d12ce5af2b39", eventDate: Date 2016-07-13T11:00:18.941Z, status: Object } com_zextras_chat_bundle.js:4964:10
13-6-2016 14:0:18,622 LOG [Received contact information event] com_zextras_chat_bundle.js:4953
Object { code: 4, _hasResponse: true, creationTime: 1468407618619, sender: "myuser.com@mydomain.com", senderResource: "82b8c644-1f25-4787-a5f3-d12ce5af2b39", eventDate: Date 2016-07-13T11:00:18.941Z, status: Object } com_zextras_chat_bundle.js:4964:10
13-6-2016 14:0:18,627 LOG [Received an event on ping] com_zextras_chat_bundle.js:4953

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Loading package: TasksCore, Tasks AjxDispatcher.js:266:46
13-6-2016 14:0:32,567 LOG [DosFiler] com_zextras_chat_bundle.js:4953
Flushing... com_zextras_chat_bundle.js:4964:10
13-6-2016 14:0:33,611 LOG [DosFiler] com_zextras_chat_bundle.js:4953
Flushing... com_zextras_chat_bundle.js:4964:10
13-6-2016 14:0:33,633 LOG [DosFiler] com_zextras_chat_bundle.js:4953
Flushing... com_zextras_chat_bundle.js:4964:10
13-6-2016 14:0:34,511 LOG [Received an event on ping] com_zextras_chat_bundle.js:4953
Object { code: 10, _hasResponse: true, creationTime: 1468407634511, sender: "myuser.com@mydomain.com", senderResource: "", destination: "zmtest@mydomain.com", destinationResource: "", msgId: "919c1c72-c5af-47cc-8c36-7a72d9108d15" } com_zextras_chat_bundle.js:4964:10
13-6-2016 14:0:42,532 LOG [JingleSession.onnegotiationneeded] com_zextras_chat_bundle.js:4953
negotiationneeded { target: RTCPeerConnection, isTrusted: true, currentTarget: RTCPeerConnection, eventPhase: 2, bubbles: false, cancelable: false, defaultPrevented: false, timeStamp: 1468407642532088, originalTarget: RTCPeerConnection, explicitOriginalTarget: