Begin forwarded message:

> From: Wayne J <[email protected]>
> Date: 2011年8月23日 上午04时51分27秒格林尼治标准时间+0800
> To: Bing Li <[email protected]>
> Subject: Re: Can Peer-to-Peer Model Be Launched in AppStore?
> 
> Unfortunately I cannot reply to the list right now because I don't have 
> things setup correctly.
> 
> From a technical point of view there is nothing that does not allow this from 
> 3G. However, you will *not* be able to do this with a 3G connection. The 
> reason is that the carriers *will* have firewalls and probably *use* NAT. 
> Both of these can (and probably will) prevent direct point to point 
> connections.
> 
> My point was that these things are *not* unique to 3G. You can encounter them 
> on any type of TCP/IP network connection so you application will have to deal 
> with them in all cases. I am not super familiar with BlueTooth but I am 
> pretty sure they are not issues with blue tooth.
> 
> 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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