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Introduction

LST is a command introduced with MSNP2.

It is a Notification Server command, without a request or response payload.

It retrieves all users in any of the avaliable lists.

Client/Request

LST TrID [ FL | AL | BL | RL ]

NOTE: There is a possibility that PL can be retrieved this way too.

Server/Response

Outside of SYN

LST TrID [ FL | AL | BL | RL ] list-version index size-of-list user-handle stored-friendly-name {groups}

Where list-version is the current List Version.

Where index is a number that can not go out of size-of-list. If the list is empty this is 0.

Where size-of-list is the upper bounds for index. If the list is empty this is 0.

Where user-handle is the related user's handle. If the list is empty this parameter is not in the response.

Where stored-friendly-name is the friendly name stored for this contact on the server. If the list is empty this parameter is not in the response.

Where groups is a comma-delimited list of Group IDs this contact is in, only appended if the list (parameter 1) is set to FL. Defaults to 0. Added since MSNP7.

In SYN

First generation

Applies for MSNP2 to MSNP6.

Same as the response Outside of SYN.

Groups support

Applies for MSNP7.

LST TrID [ FL | AL | BL | RL ] list-version index size-of-list user-handle stored-friendly-name {groups}

Where groups is a comma-delimited list of Group IDs this contact is in, only appended if the list (parameter 1) is set to FL. Defaults to 0.

Second generation

Applies for MSNP8 and MSNP9

LST user-handle stored-friendly-name list-bits {groups}

Where list-bits are in the format:

1: Forward List (FL)
2: Allow List (AL)
4: Block List (BL)
8: Reverse List (RL)

Where groups is a comma-delimited list of Group IDs this contact is in, only appended if Forward List (FL) is set in list-bits. Defaults to 0.

Third generation

Applies for MSNP10 with ABCHMigrated: 0.

LST N=user-handle F=stored-friendly-name list-bits {groups}

Same parameters as the second generation.

Fourth generation

Applies for MSNP10 and MSNP11 with ABCHMigrated: 1.

LST N=user-handle F=stored-friendly-name C=contact-guid list-bits {groupGuids}

Where contact-guid is the GUID/UUID of the contact.

Where groupGuids is a comma-delimited list of Group GUIDs this contact is in, only appending if Forward List (FL) is set in list-bits, defaults to whatever "Other Contacts"'s GUID is.

Fifth generation

Applies for MSNP12.

LST N=user-handle F=stored-friendly-name C=contact-guid list-bits network-id {groupGuids}

Where network-id is any Network ID bits:

1: Messenger
2: Office Communicator
4: Telephone
8: "MNI" or Mobile Network Interop, used for some mobile networks.
16: SMTP or Simple Mail Transfer Protocol, used for Japanese mobile networks.
32: Yahoo! Messenger network, only seen in MSNP14 and higher.

Examples

Client-initated

C: LST 1 FL
S: LST 1 FL 255 1 1 anotheruser@example.com another%20user
C: LST 2 BL
S: LST 2 BL 255 0 0

From SYN

From the beginning

Only in MSNP2 to MSNP6.

C: SYN 3 0
S: SYN 3 4

...

S: LST 3 FL 4 1 1 anotheruser@hotmail.com another%20user
S: LST 3 AL 4 1 1 anotheruser@hotmail.com another%20user
S: LST 3 BL 4 0 0
S: LST 3 RL 4 1 1 anotheruser@hotmail.com another%20user

Using groups

Only in MSNP7.

C: SYN 4 0
S: SYN 4 5

...

S: LSG 4 5 1 1 0 Other%20Contacts 0
S: LST 4 FL 5 1 1 anotheruser@hotmail.com another%20user 0
S: LST 4 AL 5 1 1 anotheruser@hotmail.com another%20user
S: LST 4 BL 5 0 0
S: LST 4 RL 5 1 1 anotheruser@hotmail.com another%20user

Using second generation

Only in MSNP8 and MSNP9.

C: SYN 5 0
S: SYN 5 6 1 1

...

S: LSG 0 Other%20Contacts 0
S: LST anotheruser@hotmail.com another%20user 11 0

Using third generation

Only in MSNP10 with ABCHMigrated: 0.

C: SYN 6 0 0
S: SYN 6 7 0 1 1

...

S: LSG Other%20Contacts 0
S: LST N=anotheruser@hotmail.com F=another%20user C=anotheruser@hotmail.com 11 0

Using fourth generation

Only in MSNP10 and MSNP11 with ABCHMigrated: 1.

C: SYN 7 0 0
S: SYN 7 2024-10-15T14:49:40.1100000-07:00 2024-10-15T14:49:40.1100000-07:00 1 1

...

S: LSG Other%20Contacts d6deeacd-7849-4de4-93c5-d130915d0042
S: LST N=anotheruser@hotmail.com F=another%20user C=c1f9a363-4ee9-4a33-a434-b056a4c55b98 11 d6deeacd-7849-4de4-93c5-d130915d0042

Using fifth generation

Only in MSNP12.

C: SYN 8 0 0
S: SYN 8 2024-10-15T15:01:30.1200000-07:00 2024-10-15T15:01:30.1200000-07:00 1 1

...

S: LSG Other%20Contacts d6deeacd-7849-4de4-93c5-d130915d0042
S: LST N=anotheruser@hotmail.com F=another%20user C=c1f9a363-4ee9-4a33-a434-b056a4c55b98 11 1 d6deeacd-7849-4de4-93c5-d130915d0042

Known changes

MSNP7: Added support for groups.
MSNP8: Changed format in SYN considerably, dropping the iterator parameters and merging all lists into a single parameter instead of multiple calls.
MSNP10: Added prefixes for user handle, stored friendly name to SYN version, added C= for contact ID. Changed C= to contact GUID and changed group ID list to group GUID list with ABCHMigrated: 1 to SYN version.
MSNP12: Added Network IDs to SYN version.
MSNP13: Removed SYN.

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