Re: [rtcweb] #13: Transport of DATA_CHANNEL_OPEN

[Bernard Aboba <[e-mail]>]

Michael said:
> I guess you are considering the case where the OPEN message was dropped by the network multiple times... [BA] Right.  That's the case in which the details of the OPEN transport makes a difference.
 
> The sender and receiver normally bound the memory for processing data (socket buffers). So
> your above only applies if the send buffer is larger than 9.6 MB.  [BA] The assumption is that the receiving application processes the incoming data, so that the RWIN does not decrease.  If the data is sent unordered and unreliable, and is acknowledged by SACK chunks (e.g. only the OPEN is lost), the sender can send this much data (assuming that it has that much to send).   > Often, the send and receiver buffer are the same and reflect the RWIN, so you are considering on the receiver side a 16 KB buffer, on the sender side a 10 MB buffer. [BA] No.  You can have 16 KB on both sides and the sender can end up sending this much, as long as the data isn't lost and the receiving application keeps processing it.  Because of that the RWIN does not limit the sender.