prosody
735b8f4a6d7e
spec/scansion/keep_full_sub_req.scs
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spec/scansion/keep_full_sub_req.scs @ 11661:735b8f4a6d7e
net.http: Send entire HTTP request header as one write
When opportunistic writes are enabled this reduces the number of
syscalls and TCP packets sent on the wire.
Experiments with TCP Fast Open made this even more obvious.
That table trick probably wasn't as efficient. Lua generates bytecode
for a table with zero array slots and space for two entries in the hash
part, plus code to set [2] and [4]. I didn't verify but I suspect it
would have had to resize the table when setting [1] and [3], although
probably only once. Concatenating the strings directly in Lua is easier
to read and involves no extra table or function call.
| author | Kim Alvefur <zash@zash.se> |
|---|---|
| date | Thu, 08 Jul 2021 18:21:59 +0200 |
| parent | 10515:35bf3b80480f |
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# server MUST keep a record of the complete presence stanza comprising the subscription request (#689) [Client] Alice jid: pars-a@localhost password: password [Client] Bob jid: pars-b@localhost password: password [Client] Bob's phone jid: pars-b@localhost/phone password: password --------- Alice connects Alice sends: <presence to="${Bob's JID}" type="subscribe"> <preauth xmlns="urn:xmpp:pars:0" token="1tMFqYDdKhfe2pwp" /> </presence> Alice disconnects Bob connects Bob sends: <presence/> Bob receives: <presence from="${Bob's full JID}"/> Bob receives: <presence from="${Alice's JID}" type="subscribe"> <preauth xmlns="urn:xmpp:pars:0" token="1tMFqYDdKhfe2pwp" /> </presence> Bob disconnects # Works if they reconnect too Bob's phone connects Bob's phone sends: <presence/> Bob's phone receives: <presence from="${Bob's phone's full JID}"/> Bob's phone receives: <presence from="${Alice's JID}" type="subscribe"> <preauth xmlns="urn:xmpp:pars:0" token="1tMFqYDdKhfe2pwp" /> </presence> Bob's phone disconnects
