2017-07-02 15:53:10 -07:00
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package i2np
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import (
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2021-04-19 20:43:37 -04:00
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"github.com/go-i2p/go-i2p/lib/common"
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2017-07-02 15:53:10 -07:00
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)
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/*
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I2P I2NP DatabaseStore
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https://geti2p.net/spec/i2np
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Accurate for version 0.9.28
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with reply token:
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+----+----+----+----+----+----+----+----+
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| SHA256 Hash as key |
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+ +
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+ +
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+ +
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+----+----+----+----+----+----+----+----+
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|type| reply token | reply_tunnelId
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+----+----+----+----+----+----+----+----+
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| SHA256 of the gateway RouterInfo |
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+----+ +
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+ +
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+ +
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+ +----+----+----+----+----+----+----+
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| | data ...
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+----+-//
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with reply token == 0:
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+----+----+----+----+----+----+----+----+
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| SHA256 Hash as key |
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+ +
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+ +
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+ +
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+----+----+----+----+----+----+----+----+
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|type| 0 | data ...
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+----+----+----+----+----+-//
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key ::
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32 bytes
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SHA256 hash
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type ::
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1 byte
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type identifier
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bit 0:
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0 RouterInfo
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1 LeaseSet
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bits 7-1:
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Through release 0.9.17, must be 0
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As of release 0.9.18, ignored, reserved for future options, set to 0 for compatibility
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reply token ::
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4 bytes
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If greater than zero, a DeliveryStatusMessage
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is requested with the Message ID set to the value of the Reply Token.
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A floodfill router is also expected to flood the data to the closest floodfill peers
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if the token is greater than zero.
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reply_tunnelId ::
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4 byte TunnelId
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Only included if reply token > 0
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This is the TunnelId of the inbound gateway of the tunnel the response should be sent to
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If $reply_tunnelId is zero, the reply is sent directy to the reply gateway router.
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reply gateway ::
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32 bytes
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Hash of the RouterInfo entry to reach the gateway
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Only included if reply token > 0
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If $reply_tunnelId is nonzero, this is the router hash of the inbound gateway
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of the tunnel the response should be sent to.
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If $reply_tunnelId is zero, this is the router hash the response should be sent to.
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data ::
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If type == 0, data is a 2-byte Integer specifying the number of bytes that follow,
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followed by a gzip-compressed RouterInfo.
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If type == 1, data is an uncompressed LeaseSet.
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*/
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type DatabaseStore struct {
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Key common.Hash
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Type byte
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ReplyToken [4]byte
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ReplyTunnelID [4]byte
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ReplyGateway common.Hash
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Data []byte
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}
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