Software /
code /
prosody
File
spec/scansion/pubsub_advanced.scs @ 10571:cfeb0077c9e9
net.server_epoll: Avoid concatenating buffer with single item
Saves creating a string that'll be identical to buffer[1] anyways, as
well as a C function call. Depending on Lua version and length of the
string, this could be reusing an interned string, but a longer one would
probably be duplicated for no reason.
Having exactly one item in the buffer seems like it would be fairly
common, but I have not done an extensive study. If opportunistic writes
are enabled then it will be even more likely.
This special case could be optimized like this in table.concat but it
does not look like it is.
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Sat, 28 Dec 2019 06:18:58 +0100 |
parent | 9291:329a670ae975 |
child | 11429:ef623d719894 |
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# Pubsub: Node creation, publish, subscribe, affiliations and delete [Client] Balthasar jid: admin@localhost password: password [Client] Romeo jid: romeo@localhost password: password [Client] Juliet jid: juliet@localhost password: password --------- Romeo connects Romeo sends: <iq type="set" to="pubsub.localhost" id='create1'> <pubsub xmlns="http://jabber.org/protocol/pubsub"> <create node="princely_musings"/> </pubsub> </iq> Romeo receives: <iq type="error" id='create1'> <error type="auth"> <forbidden xmlns='urn:ietf:params:xml:ns:xmpp-stanzas'/> </error> </iq> Balthasar connects Balthasar sends: <iq type='set' to='pubsub.localhost' id='create2'> <pubsub xmlns='http://jabber.org/protocol/pubsub'> <create node='princely_musings'/> </pubsub> </iq> Balthasar receives: <iq type="result" id='create2'/> Balthasar sends: <iq type="set" to="pubsub.localhost" id='create3'> <pubsub xmlns="http://jabber.org/protocol/pubsub"> <create node="princely_musings"/> </pubsub> </iq> Balthasar receives: <iq type="error" id='create3'> <error type="cancel"> <conflict xmlns="urn:ietf:params:xml:ns:xmpp-stanzas"/> </error> </iq> Juliet connects Juliet sends: <iq type="set" to="pubsub.localhost" id='sub1'> <pubsub xmlns="http://jabber.org/protocol/pubsub"> <subscribe node="princely_musings" jid="${Romeo's full JID}"/> </pubsub> </iq> Juliet receives: <iq type="error" id='sub1'/> Juliet sends: <iq type="set" to="pubsub.localhost" id='sub2'> <pubsub xmlns="http://jabber.org/protocol/pubsub"> <subscribe node="princely_musings" jid="${Juliet's full JID}"/> </pubsub> </iq> Juliet receives: <iq type="result" id='sub2'> <pubsub xmlns='http://jabber.org/protocol/pubsub'> <subscription jid="${Juliet's full JID}" node='princely_musings' subscription='subscribed'/> </pubsub> </iq> Balthasar sends: <iq type="get" id='aff1' to='pubsub.localhost'> <pubsub xmlns="http://jabber.org/protocol/pubsub#owner"> <affiliations node="princely_musings"/> </pubsub> </iq> Balthasar receives: <iq type="result" id='aff1' from='pubsub.localhost'> <pubsub xmlns="http://jabber.org/protocol/pubsub#owner"> <affiliations node="princely_musings"> <affiliation affiliation='owner' jid='admin@localhost' xmlns='http://jabber.org/protocol/pubsub#owner'/> </affiliations> </pubsub> </iq> Balthasar sends: <iq type="set" id='aff2' to='pubsub.localhost'> <pubsub xmlns="http://jabber.org/protocol/pubsub#owner"> <affiliations node="princely_musings"> <affiliation affiliation='owner' jid='admin@localhost' xmlns='http://jabber.org/protocol/pubsub#owner'/> <affiliation jid="${Romeo's JID}" affiliation="publisher"/> </affiliations> </pubsub> </iq> Balthasar receives: <iq type="result" id='aff2' from='pubsub.localhost'/> Romeo sends: <iq type="set" to="pubsub.localhost" id='pub1'> <pubsub xmlns="http://jabber.org/protocol/pubsub"> <publish node="princely_musings"> <item id="current"> <entry xmlns="http://www.w3.org/2005/Atom"> <title>Soliloquy</title> <summary>Lorem ipsum dolor sit amet</summary> </entry> </item> </publish> </pubsub> </iq> Juliet receives: <message type="headline" from="pubsub.localhost"> <event xmlns="http://jabber.org/protocol/pubsub#event"> <items node="princely_musings"> <item id="current"> <entry xmlns="http://www.w3.org/2005/Atom"> <title>Soliloquy</title> <summary>Lorem ipsum dolor sit amet</summary> </entry> </item> </items> </event> </message> Romeo receives: <iq type="result" id='pub1'/> Juliet sends: <iq type="set" to="pubsub.localhost" id='unsub1'> <pubsub xmlns="http://jabber.org/protocol/pubsub"> <unsubscribe node="princely_musings" jid="${Juliet's full JID}"/> </pubsub> </iq> Juliet receives: <iq type="result" id='unsub1'/> Balthasar sends: <iq type="set" to="pubsub.localhost" id='del1'> <pubsub xmlns="http://jabber.org/protocol/pubsub#owner"> <delete node="princely_musings"/> </pubsub> </iq> Balthasar receives: <iq type="result" from='pubsub.localhost' id='del1'/> Romeo disconnects // vim: syntax=xml: