To ensure the best possible quality and to use JOTIcafe without any problems, use the following checklist. When you have followed the checklist you are fully prepared for JOTIcafe.
- Make sure your webcam and microphone are connected and functional
- Update your web browser to the latest version (We advise the use of Chrome or Opera)
- Update Adobe Flash to the latest version
- When speaking to other Scouts, use English as the main language.
- Verify any network firewall to accept outgoing UDP traffic. See “Network issues” on the bottom of this page for more information (Only needed when using SOHO or corporate routers/firewalls)
Ready? Go! JOTI.tv login
JOTIcafe features and functions
- Simple “click to connect” video with other Scouts
- Chat channels for you region and language, country and continent, makes it easy to connect.
Network configuration and issues
JOTIcafe uses the protocol RTMFP to communication between clients and JOTI.tv. The Real-Time Media Flow Protocol (RTMFP) is a communication protocol from Adobe that enables direct end user to end user peering communication between multiple instances of the Adobe® Flash® Player client and applications built using the Adobe AIR® framework for the delivery of rich, live, real-time communication.
UDP port 1935 and ports 10000+ are used by the JOTI.tv servers. The UDP ports used on client computers could be any port from 1024 to 65535.
In order to just connect to the JOTI.tv servers, you must be able to send and receive UDP packets with any UDP port on your client computer (source port for outgoing, destination port for incoming) and port 1935 and ports 10000+ on the JOTI servers (destination port for outgoing, source port for incoming).
*just* connecting to JOTI.tv isn’t useful, though, since all it can do is help you to connect directly to other clients running JOTIcafe. Other client computers, just like your client computer, will be using a random UDP port in the range 1024..65535. Therefore, in order to communicate P2P with other client computers using JOTIcafe (RTMFP), you must do one of the two following things:
1) Allow all UDP with a source or destination port from 1024..65535.
2) Have a “stateful firewall” that allows bidirectional UDP connections to and from any UDP ports in the range 1024 through 65535 inclusive as long as a first packet is sent outbound through the firewall. This is commonly called “allowing outbound UDP”. Sending the first packet outbound through your firewall to allow return packets is commonly called “UDP hole punching”. Searching on these terms should give you more information.
in general, a firewall that blocks UDP will block RTMFP communication.
Our advice is to configure the following firewall rules to allow UDP traffic for JOTI.tv;
|Client to Client||
|Client to JOTI.tv||
Why UDP ports? “Skype works without it..”
That is correct. But we can’t deliver the big serverpower that Skype, Microsoft, Yahoo or Google has. So we designed it so that all of the users do a little server work.
- Check your connectivity to Adobe Stratus: http://cc.rtmfp.net/ Green = good.
- Test p2p videocall http://labs.adobe.com/technologies/cirrus/samples/
- More information about RTMFP: http://www.adobe.com/products/flash-media-enterprise/rtmfp-faq.html