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From Jacob Champion <>
Subject Re: [PATCH] Add "FreeListen" to support IP_FREEBIND
Date Tue, 08 Mar 2016 20:21:28 GMT
On 03/08/2016 10:47 AM, Tim Bannister wrote:
>> On 8 Mar 2016, at 18:13, William A Rowe Jr <> wrote:
>> If a websocket implementation is properly stacked on top of the
>> core, there is no need for special-casing this interaction.  It
>> will be able to speak over http or https, or conceivably even over
>> a single h2, or h2c stream, and will support httpready or freebind
>> mechanics.
> I chose WebSocket precisely because it's a pain and will illustrate
> awkward cases. WebSocket over HTTP/2 sounds like a red herring, as
> normal WebSocket runs over a stream transport (TCP). In RFC 6455 it's
> an upgrade, and once that upgrade has happened then HTTP is not part
> of the stack any more. WebSocket Secure runs over TLS but, again,
> discards HTTP after the upgrade.

Right. WebSocket is WebSocket, and isn't communicating "over" or
"inside" another stream. There is only one way to create a WebSocket
connection, and that's by upgrading from an HTTP/1.1 request. AFAIK,
HTTP/2 + WebSocket does not exist, nor does ALPN of a "pure" WebSocket


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