# Table of contents:

Introduction
Client/Request
Server/Response
- Example
Known changes

# Introduction

GSB is a command introduced with MSNP11.

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

Requests the server to send a subscription status (SBS command).

# Client/Request

GSB TrID

# Server/Response

Responds with a SBS command with the Transaction ID used in the request.

# Example

S: NOT 339
<NOTIFICATION id="2" siteid="111100110" siteurl="http://isp.messenger.msn.com/">
	<TO pid="0x00000001:0x00000002" name="example@hotmail.com">
		<VIA agent="messenger" />
	</TO>
	<MSG id="0">
		<ACTION url="a.htm" />
		<SUBSCR url="s.htm" />
		<BODY>
			<USERSTATUS value="subscriptionchange" />
		</BODY>
	</MSG>
</NOTIFICATION>
C: GSB 1
S: SBS 1 SC=2ad5b0fad0464b7f9577c2a3ac0a13f1;SI=0000000000000000;SS=2;PS=2

# Known changes

None.