2.2.2.4 REFUSE
The REFUSE message is sent in response to the CONNECT (section 2.2.2.2) message when the connection is not accepted.
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Message Size |
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Version |
Message Type |
Reserved |
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Error Code |
Address Count |
Address Offset |
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IPv6 Address Array (variable) |
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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 0x04.
Reserved (2 bytes): MUST be set to zero and MUST be ignored on receipt.
Error Code (1 byte): One of the following values.
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Value
Meaning
REFUSE_CODE_BUSY
0x01
The sending node already has the maximum number of neighbor connections. This code is never sent for a direct connection.
REFUSE_CODE_ALREADY_CONNECTED
0x02
The connection on which this message was received is already in the CONNECTED state and the CONNECT message did not have the Update bit set.
REFUSE_CODE_DUPLICATE_CONNECTION
0x03
The sending node is already connected to the receiving node on another connection.
REFUSE_CODE_DIRECT_CONNECTION_DISALLOWED
0x04
The receiving node is not accepting direct connections. This code MUST be returned when the application is not expecting direct connections.
Address Count (1 byte): The total number of address entries included in the message.
Address Offset (2 bytes): The offset, in bytes, from the beginning of the message to the first address in the address list.
IPv6 Address Array (variable): An array of Address Count IPv6 addresses in PEER_IN6_ADDRESS (section 2.2.1.3) form. This field MUST NOT be present if the Address Count is 0x00.