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	<title>Protocols/MSNP/Commands/CHL - Revision history</title>
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	<updated>2026-06-26T12:03:05Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>https://wiki.nina.chat/index.php?title=Protocols/MSNP/Commands/CHL&amp;diff=4241&amp;oldid=prev</id>
		<title>Animadoria at 18:41, 11 May 2022</title>
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		<updated>2022-05-11T18:41:05Z</updated>

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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 18:41, 11 May 2022&lt;/td&gt;
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		<author><name>Animadoria</name></author>
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	<entry>
		<id>https://wiki.nina.chat/index.php?title=Protocols/MSNP/Commands/CHL&amp;diff=2393&amp;oldid=prev</id>
		<title>AD: 1 revision imported</title>
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		<updated>2020-05-29T00:23:34Z</updated>

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		<author><name>AD</name></author>
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		<id>https://wiki.nina.chat/index.php?title=Protocols/MSNP/Commands/CHL&amp;diff=2392&amp;oldid=prev</id>
		<title>AD at 20:26, 6 February 2010</title>
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		<updated>2010-02-06T20:26:11Z</updated>

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&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;=CHL=&lt;br /&gt;
&lt;br /&gt;
The CHL command is an unsolicited command coming from the server which is used to verify that the client currently connected is an official client (MSN Messenger, Windows Live Messenger, etc.).&lt;br /&gt;
&lt;br /&gt;
 CHL TrID challengestring&lt;br /&gt;
&lt;br /&gt;
*TrID: The [[Protocols/MSNP/TransactionID]] of the command. Always 0.&lt;br /&gt;
*challengestring: A string required for the response&lt;br /&gt;
&lt;br /&gt;
A challenge must be replied to using the [[Protocols/MSNP/Commands/QRY|QRY]] command.&lt;br /&gt;
&lt;br /&gt;
=Challenge Response=&lt;br /&gt;
&lt;br /&gt;
The challenge system varies over different MSNP versions.&lt;br /&gt;
&lt;br /&gt;
* For MSNP8, 9, and 10 see [[Protocols/MSNP/MSNP8/Challenges]]&lt;br /&gt;
* For MSNP11 and later, see [[Protocols/MSNP/MSNP11/Challenges]]&lt;br /&gt;
* MSNP13 and 14 uses updated keys, see [[Protocols/MSNP/MSNP13/Challenges]]&lt;br /&gt;
* MSNP15 on later uses updated keys, see [[Protocols/MSNP/MSNP15/Changes]]&lt;br /&gt;
&lt;br /&gt;
[[Category:MSN]]&lt;br /&gt;
[[Category:Protocols/MSNP]]&lt;br /&gt;
[[Category:Work_In_Progress]]&lt;/div&gt;</summary>
		<author><name>AD</name></author>
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