97 lines
3.1 KiB
Markdown
97 lines
3.1 KiB
Markdown
# Introduction
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`CHG` is a command introduced with [MSNP2](../versions/msnp2.md).
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It is a Notification Server command, without either a request or response payload.
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Changes your presence status, and sets your Client Capabilities and MSNObject in later MSNP versions.
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# Client/Request
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`CHG TrID status {flags} {msnobj}`
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Where `status` can be any of the below:
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* `NLN`: Online
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* `BSY`: Busy
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* `IDL`: Idle
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* `BRB`: Be Right Back
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* `AWY`: Away (previously Away From Keyboard)
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* `PHN`: On The Phone
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* `LUN`: Out To Lunch
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* `HDN`: Appear Offline (previously Invisible)
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* `FLN`: Semi-offline. More on this below.
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In [MSNP8](../versions/msnp8.md) and higher, `flags`, an optional parameter may be used to
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specify your Client Capabilities.
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In [MSNP9](../versions/msnp9.md) and higher, `msnobj`, an optional parameter may be used to
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add additional information related to your user. Requires that `flags` MUST be set to use.
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The MSNObject itself is a XML-like element.
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## Status explanations
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All statuses except `HDN` and `FLN` will treat you as online.
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Which means all users on your Allow List (AL) and Reverse List (RL)
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will get all presence changes via the NLN command.
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The statuses `HDN` and `FLN` will treat you as offline.
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Which means all users on your Allow List (AL) and Reverse List (RL)
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will get a FLN command instead of an NLN command.
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Also, all attempts to create a Switchboard session will fail automatically,
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Exclusive to the `FLN` state, you are put in a very reduced state where you can
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only recieve presence changes from other users and resynchronize your Lists.
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# Server/Response
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`CHG TrID status {flags} {msnobj}`
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The server may also send this Asynchronously, if it does, the TrID will be 0.
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# Examples
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## Changing status to Online
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```
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C: CHG 1 NLN
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S: CHG 1 NLN
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```
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## Changing status to Idle with Capability Flags
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*This only works in [MSNP8](../versions/msnp8.md) and higher.*
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```
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C: CHG 2 IDL 1
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S: CHG 2 IDL 1
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```
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## Changing status to Busy with Capability Flags and a MSNObject.
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*This only works in [MSNP9](../versions/msnp9.md) and higher.*
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*NOTE: This has been line-breaked.
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Lines beginning with `..` followed by a space are continuations of the previous line.*
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```
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C: CHG 3 BSY 268435500 %3Cmsnobj%20Creator%3D%22example%40hotmail.com%22
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.. %20Size%3D%2225235%22%20Type%3D%223%22
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.. %20Location%3D%22uexA4DE.dat%22%20Friendly%3D%22AAA%3D%22
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.. %20SHA1D%3D%22vP1ppB+xiFQ8ceZivRe0uCaYLIU%3D%22
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.. %20SHA1C%3D%22DBRJPnGb+wBYawENkdor1bOdYUs%3D%22%2F%3E
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S: CHG 3 BSY 268435500 %3Cmsnobj%20Creator%3D%22example%40hotmail.com%22
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.. %20Size%3D%2225235%22%20Type%3D%223%22
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.. %20Location%3D%22uexA4DE.dat%22%20Friendly%3D%22AAA%3D%22
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.. %20SHA1D%3D%22vP1ppB+xiFQ8ceZivRe0uCaYLIU%3D%22
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.. %20SHA1C%3D%22DBRJPnGb+wBYawENkdor1bOdYUs%3D%22%2F%3E
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```
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## Server Decides it wants you in Semi-Offline mode.
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```
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S: CHG 0 FLN
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```
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## Invalid argument
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*NOTE: There is no defined behaviour for this command specifically.*
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```
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C: CHG 4 HOT
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```
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Server disconnects client.
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# Known changes
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* [MSNP8](../versions/msnp8.md): Added optional Client Capabilities parameter (as parameter 2).
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* [MSNP9](../versions/msnp9.md): Added optional MSNObject parameter (as parameter 3).
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* Removed in MSNP24.
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