Comments on: Multicast Explained in Flash 10.1 P2P

By: thomas

thomas — Sat, 17 Sep 2011 15:15:26 +0000

HI，TOM，thank you very much for your article,but i still have a question just like some one(Sergio) above the comment,i’m a chinese ,my english is not so good,but very interest in your blog,it’s very useful,but i have cost full day to Understand what’s mean,the question is:

[what “Modulo size of mask (in this example every 3rd, 5th, and 6th)” means? What example and what mask do you mean? Where I can see “every 3rd, 5th, and 6th” WHAT? ]

would you give us some explain? i’ll wait for you,and
Persist to notice your blog,thank you ,thank you very much.

By: Viach

Viach — Mon, 22 Aug 2011 18:52:11 +0000

Hi everyone!
Could somebody expalin me, what means Error #2032
which I get when trying to check both, broadcaster and reciever in Adobe Flash Builder 4.5?
It undrerline by red rtmpf as mistace, despite address is given me by Adobe and I did everyrthing exactly as shown in video

By: Tom

Tom — Wed, 15 Jun 2011 00:20:33 +0000

Hi Tom, Just posted a question on stackoverflow, that I’m hoping you might be able to answer… http://stackoverflow.com/questions/6351665/adobe-cirrus-examples-needed

By: mogao

mogao — Fri, 27 May 2011 09:48:43 +0000

Hello, I am a university student. Our lab is attempting to work on a p2p live streaming using flash p2p features. The media source is not from a webcam but a file from a certain server, which is not directly supported by any of the 4 methods flash player offers(posting, direct routing , object replication,and multicast.) As some of the forum threads mentioned, our method is to use NetStream.publish() a stream and use send(“callbackname”, data) to all subscribers that have joined in a NetGroup. So we can use p2p transmission. Now here are our questions:

1. We know from MAX 2009 that flash p2p camera video multicasting implements pull-push mechanism inside which makes full use of p2p features like buffer map exchange. If we use NetStream.send() API to send non-webcam source data, will it also make use of this pull-push mechanism to spread data among all peers(subscribers) with proper data exchange?

or more detailedly,

I saw the P2P Gaming Libs at flashrealtime.com. It uses DIRECT_CONNECTIONS when creating publish-used NetStream in order to send data with lowest latency. My question is if I do not use DIRECT_CONNECTIONS, than when the NetGroup grow large (1000), will those peers that are not direct neighbors to the publisher in the same group relay data to each other using pull-push via buffer map?

2. I have written a sample app and use send() to deliver data only (NetStream.bufferTime = 0) without camera video and audio. When the publisher sends the data in a “for()” stantence for 20 times, the subscribers can only receive about 8 of them. But when I set a timer and periodically send them(e.g., 500ms), the subscribers can receive them correctly. My questions are: Is the packet loss caused by UDP unreliability? Can this be solved by setting the NetStream.dataReliable = ture? Can this totally be solved by setting a timer? How to set the delaytime property in timer? Are all data sent are orderedly received?

I’m very appreciated if you can answer my questions? thanks.

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By: Pete

Pete — Tue, 11 Jan 2011 23:06:18 +0000

I could use some help.
When I compile and run the broadcaster xmxl, it says “NetConnection.Connect.Success”, but then nothing else happens. Same with the receiver. I put in my dev key, and tried the existing stratus server, and the server address given with my dev key.

When I run it with Flash debugger, I get the following message:
Error: Error #2154: The NetStream Object is invalid. This may be due to a failed NetConnection.
at flash.net::NetStream/invoke()
at flash.net::NetStream/attachCamera()
at Main/setupStream()[C:\Users\Professor Frink\Documents\FlDev\VidChat\src\Main.mxml:66]
at Main/netStatus()[C:\Users\Professor Frink\Documents\FlDev\VidChat\src\Main.mxml:48]

Any help is appreciated.

By: Bernie

Bernie — Sat, 25 Dec 2010 23:09:07 +0000

I need to know exactly what will do about this?!? -Sincere Regards cigar

By: Gamer

Gamer — Thu, 23 Dec 2010 09:41:11 +0000

I had a question you are using GroupSpecifier class which is part of flash.net package. This class is in the Beta version of Action Script 3.0 hence my flash builder 4.0 version is unable to recognize it. also is flash player 10.1 able to recognize it?