2024-10-23 16:47:02 -04:00
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# Introduction
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`SYN` is a command introduced with [MSNP2](../versions/msnp2.md)
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2024-10-26 06:56:17 -04:00
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It is a Notification Server command, without a request or response payload.
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Synchronizes user options and every contact list.
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This command can only be sent once.
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Any further uses of this command in the same session is Undefined Behaviour.
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2024-10-23 16:47:02 -04:00
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# Client/Request
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`SYN TrID list-version {settings-version}`
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Where `list-version` is the last saved List Version this client remembers.
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If the client doesn't remember any information, this is `0`.
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With [MSNP10](../versions/msnp10.md) and `ABCHMigrated: 1`,
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this is changed from a numerical value to a timestamp.
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Where `settings-version` is the last saved Settings Version this client remembers.
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If the client doesn't remember any settings, this is set to `0`.
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Added since [MSNP10](../versions/msnp10.md).
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With `ABCHMigrated: 1`, this is changed from a numerical value to a timestamp.
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# Server/Response
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`SYN TrID list-version {settings-version} {amount-of-users} {amount-of-groups}`
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Where `list-version` is either the current or new List Version, depending if the client's
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version of this parameter is the same as the one the server has.
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With [MSNP10](../versions/msnp10.md) and `ABCHMigrated: 1`,
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this is changed from a numerical value to a timestamp.
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Where `settings-version` is either the current or new Settings Version,
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depending if the client's version of this parameter is the same as the one the server has.
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Added since [MSNP10](../versions/msnp10.md).
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With `ABCHMigrated: 1`, this is changed from a numerical value to a timetstamp.
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Where `amount-of-users` is the amount of unique [LST](lst.md) responses
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your client is going to have to expect. Added since [MSNP8](../versions/msnp8.md).
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Where `amount-of-groups` is the amount of [LSG](lsg.md) responses
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your client is going to have to expect. Adec since [MSNP8](../versions/msnp8.md).
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# Examples
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## First generation
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*Only in [MSNP2](../versions/msnp2.md) to [MSNP4](../versions/msnp4.md).*
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Used commands:
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* [GTC](gtc.md)
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* [BLP](blp.md)
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* [LST](lst.md)
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```
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C: SYN 1 0
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S: SYN 1 255
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S: GTC 1 255 A
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S: BLP 1 255 AL
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S: LST 1 FL 255 1 1 anotheruser@hotmail.com another%20user
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S: LST 1 AL 255 1 1 anotheruser@hotmail.com another%20user
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S: LST 1 BL 255 0 0
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S: LST 1 RL 255 1 1 anotheruser@hotmail.com another%20user
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```
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## Second generation
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*Only in [MSNP5](../versions/msnp5.md) and [MSNP6](../versions/msnp6.md).*
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Used commands:
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* [GTC](gtc.md)
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* [BLP](blp.md)
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* [PRP](prp.md)
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* [LST](lst.md)
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* [BPR](bpr.md)
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```
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C: SYN 2 0
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S: SYN 2 255
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S: GTC 2 255 A
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S: BLP 2 255 AL
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S: PRP 2 255 PHH 123%20(4567)
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S: PRP 2 255 PHW
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S: PRP 2 255 PHM
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S: PRP 2 255 MOB N
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S: PRP 2 255 MBE N
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S: LST 2 FL 255 1 1 anotheruser@hotmail.com another%20user
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S: BPR 255 anotheruser@hotmail.com PHH 1%20(222)%20333%204444
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S: BPR 255 anotheruser@hotmail.com PHW
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S: BPR 255 anotheruser@hotmail.com PHM
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S: BPR 255 anotheruser@hotmail.com MOB N
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S: LST 2 AL 255 1 1 anotheruser@hotmail.com another%20user
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S: LST 2 BL 255 0 0
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S: LST 2 RL 255 1 1 anotheruser@hotmail.com another%20user
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```
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## Third generation
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*Only in [MSNP7](../versions/msnp7.md).*
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Used commands:
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* [GTC](gtc.md)
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* [BLP](blp.md)
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* [PRP](prp.md)
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* [LSG](lsg.md)
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* [LST](lst.md)
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* [BPR](bpr.md)
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```
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C: SYN 3 0
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S: SYN 3 255
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S: GTC 3 255 A
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S: BLP 3 255 AL
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S: PRP 3 255 PHH 123%20(4567)
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S: PRP 3 255 PHW
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S: PRP 3 255 PHM
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S: PRP 3 255 MOB N
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S: PRP 3 255 MBE N
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S: LSG 3 255 1 2 0 Other%20Contacts 0
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S: LSG 3 255 2 2 1 Friends 0
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S: LST 3 FL 255 1 1 anotheruser@hotmail.com another%20user 0
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S: BPR 255 anotheruser@hotmail.com PHH 1%20(222)%20333%204444
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S: BPR 255 anotheruser@hotmail.com PHW
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S: BPR 255 anotheruser@hotmail.com PHM
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S: BPR 255 anotheruser@hotmail.com MOB N
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S: LST 3 AL 255 1 1 anotheruser@hotmail.com another%20user
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S: LST 3 BL 255 0 0
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S: LST 3 RL 255 1 1 anotheruser@hotmail.com another%20user
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```
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### No groups specified
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*This only happens if the only group is `~`,
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and you set the client to sort by groups.*
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2024-10-26 06:56:17 -04:00
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Used commands:
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* [REG](reg.md)
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* [ADG](adg.md)
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2024-10-23 16:47:02 -04:00
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```
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S: LSG 3 255 1 1 0 ~ 0
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```
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...
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```
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C: REG 4 0 Other%20Contacts 0
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S: REG 4 256 0 Other%20Contacts 0
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C: ADG 5 Coworkers 0
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C: ADG 6 Friends 0
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C: ADG 7 Family 0
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S: ADG 5 257 1 Coworkers 0
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S: ADG 6 258 2 Friends 0
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S: ADG 7 259 3 Family 0
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```
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## Fourth generation
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*Only in [MSNP8](../versions/msnp8.md) and [MSNP9](../versions/msnp9.md).*
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Used commands:
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* [GTC](gtc.md)
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* [BLP](blp.md)
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* [PRP](prp.md)
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* [LSG](lsg.md)
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* [LST](lst.md)
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* [BPR](bpr.md)
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```
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C: SYN 8 0
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S: SYN 8 255 1 2
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S: GTC A
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S: BLP AL
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S: PRP PHH 123%20(4567)
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S: LSG 0 Other%20Contacts 0
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S: LSG 1 Friends 0
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S: LST anotheruser@hotmail.com another%20user 11 0
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S: BPR PHH 1%20(222)%20333%204444
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```
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### No groups specified
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*This only happens if the only group is `~`,
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and you set the client to sort by groups.*
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2024-10-26 06:56:17 -04:00
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Used commands:
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* [REG](reg.md)
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* [ADG](adg.md)
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2024-10-23 16:47:02 -04:00
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```
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S: LSG 0 ~ 0
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```
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...
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```
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C: REG 9 0 Other%20Contacts 0
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S: REG 9 256 0 Other%20Contacts 0
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C: ADG 10 Coworkers 0
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C: ADG 11 Friends 0
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C: ADG 12 Family 0
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S: ADG 10 257 1 Coworkers 0
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S: ADG 11 258 2 Friends 0
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S: ADG 12 259 3 Family 0
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```
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## Fifth generation
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*Only in [MSNP10](../versions/msnp10.md) and [MSNP11](../versions/msnp11.md).*
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Used commands:
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* [GTC](gtc.md)
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* [BLP](blp.md)
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* [PRP](prp.md)
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* [LSG](lsg.md)
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* [LST](lst.md)
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* [BPR](bpr.md)
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### Without GUIDs
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*Only with `ABCHMigrated: 0`.*
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```
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C: SYN 13 0 0
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S: SYN 13 255 255 1 2
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S: GTC A
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S: BLP AL
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S: PRP MFN example%20user
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S: PRP PHH 123%20(4567)
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S: LSG Other%20Contacts 0
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S: LSG Friends 1
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S: LST N=anotheruser@hotmail.com F=another%20user C=anotheruser@hotmail.com 11 0
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S: BPR PHH 1%20(222)%20333%204444
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```
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### With GUIDs
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*Only with `ABCHMigrated: 1`.*
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```
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C: SYN 14 0 0
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S: SYN 14 2024-10-23T14:02:48.5360000-07:00 2024-10-23T14:02:48.5360000-07:00 1 2
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S: GTC A
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S: BLP AL
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S: PRP MFN example%20user
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S: PRP PHH 123%20(4567)
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S: LSG Other%20Contacts d6deeacd-7849-4de4-93c5-d130915d0042
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S: LSG Friends f60efbe7-94af-4b16-b926-e4e10878d32
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S: LST N=anotheruser@hotmail.com F=another%20user C=c1f9a363-4ee9-4a33-a434-b056a4c55b98 11 d6deeacd-7849-4de4-93c5-d130915d0042
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S: BPR PHH 1%20(222)%20333%204444
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```
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## Sixth generation
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*Only in [MSNP12](../versions/msnp12.md).*
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```
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C: SYN 15 0 0
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S: SYN 15 2024-10-23T14:06:20.5360000-07:00 2024-10-23T14:02:48.5360000-07:00 1 2
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S: GTC A
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S: BLP AL
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S: PRP MFN example%20user
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S: PRP PHH 123%20(4567)
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S: LSG Other%20Contacts d6deeacd-7849-4de4-93c5-d130915d0042
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S: LSG Friends f60efbe7-94af-4b16-b926-e4e10878d32
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S: LST N=anotheruser@hotmail.com F=another%20user C=c1f9a363-4ee9-4a33-a434-b056a4c55b98 11 1 d6deeacd-7849-4de4-93c5-d130915d0042
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S: BPR PHH 1%20(222)%20333%204444
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```
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## Removed
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*Since [MSNP13](../versions/msnp13.md).*
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```
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C: SYN 16 0 0
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```
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Server disconnects client.
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# Known changes
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* [MSNP5](../versions/msnp5.md): Added [PRP](prp.md) and [BPR](bpr.md) support.
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* [MSNP7](../versions/msnp7.md): Added [LSG](lsg.md) and groups support in [LST](lst.md).
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* [MSNP8](../versions/msnp8.md): Unset properties are omitted,
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added new response parameters to replace [LSG](lsg.md) and [LST](lst.md) iterator parameters.
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Transaction IDs and List Versions were removed from used commands.
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* [MSNP10](../versions/msnp10.md): Added new parameters for the current settings version.
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With `ABCHMigrated: 1`, the List Version and Settings Version are changed to ISO 8601 timestamps.
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* [MSNP12](../versions/msnp12.md): [LST](lst.md): Added support for Network IDs.
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* [MSNP13](../versions/msnp13.md): Removed (automatic disconnection).
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Use the [Address Book Service](../services/abservice.md)
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and the [Contact Sharing Service](../services/sharingservice.md) instead.
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