87 lines
2.2 KiB
Markdown
87 lines
2.2 KiB
Markdown
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# Introduction
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`XFR` is a command introduced with [MSNP2](../versions/msnp2.md).
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It is a Dispatch Server and Notification Server command, without either a request or response payload.
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It tells the client what server to connect to for the request.
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# Client/Request
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`XFR TrID server-type`
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Where `server-type` is either `SB` (for a switchboard server), or `NS` (for a new Notification server).
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# Server/Response
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## XFR NS
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`XFR TrID NS address:port {0} {current-server}`
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Where `address:port` is the server you have requested or being referred to is.
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In [MSNP3](../versions/msnp3.md) or higher, `0` is always 0.
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In [MSNP7](../versions/msnp7.md) or higher, `current-server` is the current server you are connected to.
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## XFR SB
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`XFR TrID SB address:port authentication-method authentication-parameter`
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Where `address:port` is the server you have requested is.
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Where `authentication-method` is always `CKI`.
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Where `authentication-parameter` is the "cookie" you need to log in to Switchboard.
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# Examples
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## Client requests a new Switchboard connection
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```
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C: XFR 1 SB
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S: XFR 1 SB 10.0.1.200:1865 CKI 123456789.123456789.123456789
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```
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## Client requests a new Notification server
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*Only used as-is in Beta 2 as the first command sent to a Dispatch Server.*
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```
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C: XFR 2 NS
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S: XFR 2 NS 10.0.0.5:1863
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```
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Client disconnects from server
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Client opens a connection to 10.0.0.5:1863
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## Client referred from Dispatch Server
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### Very Old
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*Only in [MSNP2](../versions/msnp2.md) Exclusively.*
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```
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C: USR 3 MD5 I example@hotmail.com
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S: XFR 3 NS 10.0.0.5:1863
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```
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Client disconnects from server
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Client opens a connection to 10.0.0.5:1863
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### Classic
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*Only in [MSNP3](../versions/msnp3.md) to [MSNP6](../versions/msnp6.md).*
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```
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C: USR 4 MD5 I example@hotmail.com
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S: XFR 4 NS 10.0.0.5:1863 0
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```
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Client disconnects from server
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Client opens a connection to 10.0.0.5:1863
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### Modern
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*Since [MSNP7](../versions/msnp7.md).*
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```
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C: USR 5 MD5 I example@hotmail.com
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S: XFR 5 NS 10.0.0.5:1863 0 10.0.0.1:1863
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```
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Client disconnects from server
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Client opens a connection to 10.0.0.5:1863
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# Known changes
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* [MSNP3](..versions/msnp3.md) adds a new parameter that is always 0.
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* [MSNP7](..versions/msnp7.md) adds a new parameter that is the current server you are connected to.
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