Begin forwarded message:
> From: Wayne J <email@hidden>
> Date: 2011年8月23日 上午04时57分32秒格林尼治标准时间+0800
> To: Bing Li <email@hidden>
> Subject: Re: Can Peer-to-Peer Model Be Launched in AppStore?
>
> Sorry, I missed you second question.
>
> If the iPad is making the connection then this should work on NAT but it should also work on 3G. The only reason it would not work on 3G, that I can think of, is that the carrier might block connections to specific ports on outgoing. However, I don't think this is strictly point to point. If you have 2 iPad talking to each other they are both behind NAT then they both must connect to a server outside their NATs that will act as a sort of proxy.
>
> I believe that this is how Skype works. They just call the unknowing servers 'supernodes'. This should also work over 3G unless that carrier blocks it with a firewall or Apple disallows the application from the App store. But neither of these reasons are technical in nature.
>
>
> Wayne
>
> On Aug 22, 2011, at 10:26 AM, Bing Li wrote:
>
>> Dear Wayne,
>>
>> Thanks so much for your email!
>>
>> I don't understand your opinions well. Jens said 3G did not allow incoming connections. So I think P2P does not work in such an environment. I have to try to use app notifications. The major reason I use P2P is to get a lower load on the server and users can get pushed data.
>>
>> For iPad/iPhone within a NAT, I will ask the device to connect the server outside the NAT firstly. So a connection can be established. Pushing can be done without the block of NAT.
>>
>> Do you think my solution works?
>>
>> Best,
>> Bing
>>
>>
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