Willy Tarreau wrote:
On lossy networks such as 3G, they definitely are. A lost UDP packet is
not retransmitted nor signaled as lost, so the browser has to retry. However,
once the connection is established to the server, most losses are more or
less smoothed by TCP extensions such as SACK. So yes, it can take several
seconds to just resolve a host and then only a few hundreds of ms to retrieve
the objects. I've observed it.
Poor implementation.
If the network between a mobile phone and its name server is known
to be lossy and latency is the issue, send multiple queries to the
name server.
Masataka Ohta
_______________________________________________
Ietf mailing list
Ietf(_at_)ietf(_dot_)org
https://www.ietf.org/mailman/listinfo/ietf