prosody
735b8f4a6d7e
spec/scansion/extdisco.scs

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Software / code / prosody

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spec/scansion/extdisco.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 11036:79e410cd7f6e
child 11753:c4599a7c534c
line wrap: on
line source

# XEP-0215: External Service Discovery

[Client] Romeo
	password: password
	jid: user@localhost/mFquWxSr

-----

Romeo connects

Romeo sends:
	<iq type='get' xml:lang='sv' id='lx2' to='localhost'>
		<services xmlns='urn:xmpp:extdisco:2'/>
	</iq>

Romeo receives:
	<iq type='result' id='lx2' from='localhost'>
		<services xmlns='urn:xmpp:extdisco:2'>
			<service host='default.example' transport='udp' port='9876' type='stun'/>
			<service port='9876' type='turn' restricted='1' password='yHYYBDN7M3mdlug0LTdJbW0GvvQ=' transport='udp' host='default.example' username='1219525744'/>
			<service port='9876' type='turn' restricted='1' password='1Uc6QfrDhIlbK97rGCUQ/cUICxs=' transport='udp' host='default.example' username='1219525744'/>
			<service port='2121' type='ftp' restricted='1' password='password' transport='tcp' host='default.example' username='john'/>
			<service port='21' type='ftp' restricted='1' password='password' transport='tcp' host='ftp.example.com' username='john'/>
		</services>
	</iq>

Romeo sends:
	<iq type='get' xml:lang='sv' id='lx3' to='localhost'>
		<services xmlns='urn:xmpp:extdisco:2' type='ftp'/>
	</iq>

Romeo receives:
	<iq type='result' id='lx3' from='localhost'>
		<services xmlns='urn:xmpp:extdisco:2'>
			<service port='2121' type='ftp' restricted='1' password='password' transport='tcp' host='default.example' username='john'/>
			<service port='21' type='ftp' restricted='1' password='password' transport='tcp' host='ftp.example.com' username='john'/>
		</services>
	</iq>

Romeo sends:
	<iq type='get' xml:lang='sv' id='lx4' to='localhost'>
		<credentials xmlns='urn:xmpp:extdisco:2'>
			<service host='default.example' type='turn'/>
		</credentials>
	</iq>

Romeo receives:
	<iq type='result' id='lx4' from='localhost'>
		<credentials xmlns='urn:xmpp:extdisco:2'>
			<service port='9876' type='turn' restricted='1' password='yHYYBDN7M3mdlug0LTdJbW0GvvQ=' transport='udp' host='default.example' username='1219525744'/>
			<service port='9876' type='turn' restricted='1' password='1Uc6QfrDhIlbK97rGCUQ/cUICxs=' transport='udp' host='default.example' username='1219525744'/>
		</credentials>
	</iq>

Romeo disconnects

# recording ended on 2020-07-18T16:47:57Z