2.2.2 AnnouncementRequest Browser Frame

The AnnouncementRequest frame MUST be sent from the NetBIOS computer name <computer>[0x00] to the NetBIOS group name <machine group>[0x00], to force all machines in the workgroup or domain to announce, or it MUST be sent from the NetBIOS computer name <computer>[0x00] to the NetBIOS group name <machine group>[0x1D], to force the current master browser in the machine group to announce itself to the client. It is sent by a local master browser server to <machine group>[0x00] at startup to discover the members of <machine group>, as specified in section 3.3.6. Its expected response is a set of HostAnnouncement frames, as specified in section 2.2.1.

The frame MUST be sent to mailslot \MAILSLOT\BROWSE.

The format of the AnnouncementRequest frame MUST be as follows.


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0x02

Reserved

ResponseName (variable)

...

0x02 (1 byte): The 8-bit operation code (opcode) that identifies this structure as an AnnouncementRequest frame. This opcode MUST have a value of 0x02.

Reserved (1 byte): This value MUST be 0x00.

ResponseName (variable): A variable-length field that MUST be the name of the sender, up to 16 bytes in length including the null terminator. The receiving computer MUST ignore this name. (Note that the name is not needed to generate a HostAnnouncement response because that message is sent as specified in section 2.2.1.)

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