Re: [rtcweb] PseudoTCP implementation (Re: realiable data service)

[Tim Panton <[e-mail]>]

On 23 Jul 2011, at 03:33, Cullen Jennings wrote:

> 
> On Jul 20, 2011, at 8:37 , Justin Uberti wrote:
>> 
>> Yes, I was going to send a similar email. There are some deficiencies/optimizations for the fact it runs over ICE-UDP - doesn't do path MTU discovery, no checksum, no OOB data - but it is based on TCP and implements slow start and other congestion avoidance mechanisms, and is actively used by a number of applications where reliable transfer is important, such as file transfer and remote desktop applications.
>> 
>> 
> 
> It would be really interesting to see someone write a draft that subsets TCP to make it 
> 

I just want to flag that TCP isn't an especially good fit here, datagrams delivered in events are a very useful
abstraction in JavaScript, which doesn't really do streams of data very well. 

I know we can do datagrams over TCP,  but
it seems wasteful to de-packetize in the TCP layer, just to try and re-packetize it a couple of layers further up.

If there is a reliable datagram protocol as opposed to a reliable stream, I'd go for the datagram every time.

Tim.