2.2.2.1 AUTH_INFO

AUTH_INFO is the first message sent by the connection initiator when establishing a connection. Because this message is sent before the graph security provider negotiation, it is always sent in the clear.

0	1	2	3	4	5	6	7	8	9	1 0	1	2	3	4	5	6	7	8	9	2 0	1	2	3	4	5	6	7	8	9	3 0	1
Message Size
Version								Message Type								Reserved1
Connection Type								Reserved2								Graph ID Offset
Source Peer ID Offset																Destination Peer ID Offset
Graph ID Data (variable)
...
Source Peer ID Data (variable)
...
Destination Peer ID Data (variable)
...

Message Size (4 bytes): The total number of bytes in the message.

Version (1 byte): The Peer-to-Peer Graphing Protocol version number. This MUST be set to 0x10 to signify version 1.0.

Message Type (1 byte): MUST be set to 0x01.

Reserved1 (2 bytes): MUST be set to zero and ignored on receipt.

Connection Type (1 byte): MUST be one of the following values.

Value	Meaning
CONNECTION_TYPE_NEIGHBOR 0x01	This is for a neighbor connection.
CONNECTION_TYPE_DIRECT 0x02	This is a direct connection.

Reserved2 (1 byte): MUST be set to zero and MUST be ignored on receipt.

Graph ID Offset (2 bytes): The offset, in bytes, from the beginning of the message to the graph ID.

Source Peer ID Offset (2 bytes): The offset, in bytes, from the beginning of the message to the source Peer ID.

Destination Peer ID Offset (2 bytes): The offset, in bytes, from the beginning of the message to the destination Peer ID.

Graph ID Data (variable): A null-terminated UTF-8 string representing the graph ID.

Source Peer ID Data (variable): A null-terminated UTF-8 string representing the Peer ID of the node that is initiating the connection.

Destination Peer ID Data (variable): A null-terminated UTF-8 string representing the Peer ID of the node that the connection is intended for. If the Destination Peer ID Offset is equal to Message Size, this field MUST NOT be present.