[hybi] WebSocket connection throttling clarification requested

[Adam Rice <[e-mail]>]

Hi,

I would like to ask for clarification on section 4.1 item 2 of WebSocket
RFC 6455. It reads (emphasis mine):

2. If the client already has a WebSocket connection to the remote host (IP
address) *identified by /host/ and port /port/ pair,* even if the remote
host is known by another name, the client MUST wait until that connection
has been established or for that connection to have failed. There MUST be
no more than one connection in a CONNECTING state. If multiple connections *to
the same IP address* are attempted simultaneously, the client MUST
serialize them so that there is no more than one connection at a time
running through the following steps.

The first sentence seems to imply that connections should be throttled on
the basis of (host, port) pairs, ie. that ws://192.0.2.1:80/ and ws://
192.0.2.1:81/ should be considered independent for the purposes of
connection throttling. The last sentence seems to imply that connections
should be throttled on the basis of IP address only, so connections ws://
192.0.2.1:80/ and ws://192.0.2.1:81/ should be placed in the same bucket
for throttling purposes.

Which interpretation is correct?

Thank you,
Adam Rice