I2NP dataspec
This commit is contained in:
@ -122,7 +122,7 @@ Short (SSU, 5 bytes):
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{% endhighlight %}
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{% endhighlight %}
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<h4>Definition</h4>
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<h4>Definition</h4>
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<pre>
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{% highlight lang='dataspec' %}
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type :: `Integer`
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type :: `Integer`
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length -> 1 byte
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length -> 1 byte
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@ -155,11 +155,11 @@ chks :: `Integer`
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purpose -> checksum of the payload
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purpose -> checksum of the payload
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SHA256 hash truncated to the first byte
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SHA256 hash truncated to the first byte
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data :: Data
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data ::
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length -> $size bytes
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length -> $size bytes
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purpose -> actual message contents
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purpose -> actual message contents
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</pre>
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{% endhighlight %}
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<h4>Notes</h4>
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<h4>Notes</h4>
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<ul><li>
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<ul><li>
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@ -274,11 +274,12 @@ ElGamal and AES encrypted:
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{% endhighlight %}
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{% endhighlight %}
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<h4>Definition</h4>
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<h4>Definition</h4>
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<pre>
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{% highlight lang='dataspec' %}
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unencrypted:
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unencrypted:
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receive_tunnel :: `TunnelId`
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receive_tunnel :: `TunnelId`
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length -> 4 bytes
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length -> 4 bytes
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our_ident :: `Hash`
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our_ident :: `Hash`
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length -> 32 bytes
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length -> 32 bytes
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@ -335,7 +336,7 @@ encrypted_data :: ElGamal and AES encrypted data
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total length: 528
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total length: 528
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</pre>
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{% endhighlight %}
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<h4>Notes</h4>
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<h4>Notes</h4>
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<ul><li>
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<ul><li>
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@ -369,18 +370,18 @@ unencrypted:
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+----+----+----+----+----+----+----+----+
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+----+----+----+----+----+----+----+----+
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{% endhighlight %}
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{% endhighlight %}
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<h4>Definition</h4>
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<h4>Definition</h4>
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<pre>
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{% highlight lang='dataspec' %}
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unencrypted:
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unencrypted:
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bytes 0-31 : SHA-256 Hash of bytes 32-527
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bytes 0-31 : SHA-256 Hash of bytes 32-527
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bytes 32-526 : random data
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bytes 32-526 : random data
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byte 527 : reply
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byte 527 : reply
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encrypted:
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encrypted:
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bytes 0-527: AES-encrypted record(note: same size as BuildRequestRecord)
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bytes 0-527: AES-encrypted record (note: same size as `BuildRequestRecord`)
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total length: 528
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total length: 528
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</pre>
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{% endhighlight %}
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<h4>Notes</h4>
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<h4>Notes</h4>
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<ul><li>
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<ul><li>
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@ -411,7 +412,7 @@ unencrypted:
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+----+----+----+----+----+----+----+
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+----+----+----+----+----+----+----+
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{% endhighlight %}
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{% endhighlight %}
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<h4>Definition</h4>
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<h4>Definition</h4>
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<pre>
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{% highlight lang='dataspec' %}
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unencrypted:
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unencrypted:
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Delivery Instructions :: as defined below
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Delivery Instructions :: as defined below
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Length varies but is typically 1, 33, or 37 bytes
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Length varies but is typically 1, 33, or 37 bytes
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@ -424,7 +425,7 @@ Expiration :: `Date` (8 bytes)
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Certificate :: Always NULL in the current implementation (3 bytes total, all zeroes)
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Certificate :: Always NULL in the current implementation (3 bytes total, all zeroes)
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</pre>
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{% endhighlight %}
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<h4>Notes</h4>
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<h4>Notes</h4>
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<ul>
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<ul>
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@ -488,8 +489,8 @@ Do NOT use the following specification for Tunnel Message Delivery Instructions!
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{% endhighlight %}
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{% endhighlight %}
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<h4>Definition</h4>
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<h4>Definition</h4>
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<pre>
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{% highlight lang='dataspec' %}
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flag:
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flag ::
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1 byte
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1 byte
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Bit order: 76543210
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Bit order: 76543210
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bit 7: encrypted? Unimplemented, always 0
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bit 7: encrypted? Unimplemented, always 0
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@ -500,33 +501,33 @@ flag:
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If 1, four delay bytes are included
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If 1, four delay bytes are included
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bits 3-0: reserved, set to 0 for compatibility with future uses
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bits 3-0: reserved, set to 0 for compatibility with future uses
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Session Key:
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Session Key ::
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32 bytes
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32 bytes
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Optional, present encrypt flag bit is set. Unimplemented, never set, never present.
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Optional, present if encrypt flag bit is set. Unimplemented, never set, never present.
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To Hash:
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To Hash ::
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32 bytes
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32 bytes
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Optional, present if delivery type is DESTINATION, ROUTER, or TUNNEL
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Optional, present if delivery type is DESTINATION, ROUTER, or TUNNEL
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If DESTINATION, the SHA256 Hash of the destination
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If DESTINATION, the SHA256 Hash of the destination
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If ROUTER, the SHA256 Hash of the router
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If ROUTER, the SHA256 Hash of the router
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If TUNNEL, the SHA256 Hash of the gateway router
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If TUNNEL, the SHA256 Hash of the gateway router
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Tunnel ID:
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Tunnel ID :: `TunnelId`
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4 bytes
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4 bytes
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Optional, present if delivery type is TUNNEL
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Optional, present if delivery type is TUNNEL
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The destination tunnel ID
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The destination tunnel ID
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Delay:
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Delay :: `Integer`
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4 bytes
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4 bytes
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Optional, present if delay included flag is set
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Optional, present if delay included flag is set
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Not fully implemented. A 4 byte integer specifying the delay in seconds.
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Not fully implemented. Specifies the delay in seconds.
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Total length: Typical length is:
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Total length: Typical length is:
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1 byte for LOCAL delivery;
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1 byte for LOCAL delivery;
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33 bytes for ROUTER / DESTINATION delivery;
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33 bytes for ROUTER / DESTINATION delivery;
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37 bytes for TUNNEL delivery
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37 bytes for TUNNEL delivery
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</pre>
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{% endhighlight %}
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@ -606,9 +607,9 @@ with reply token:
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+ +
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+ +
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| |
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| |
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+----+----+----+----+----+----+----+----+
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+----+----+----+----+----+----+----+----+
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|type| reply token | reply tunnel-
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|type| reply token |reply_tunnelId
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+----+----+----+----+----+----+----+----+
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+----+----+----+----+----+----+----+----+
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Id | SHA256 of the gateway RouterInfo |
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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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+ +
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+ +
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@ -633,12 +634,12 @@ with reply token == 0:
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+----+----+----+----+----+-//
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+----+----+----+----+----+-//
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{% endhighlight %}
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{% endhighlight %}
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<h4>Definition</h4>
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<h4>Definition</h4>
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<pre>
|
{% highlight lang='dataspec' %}
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key:
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key ::
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32 bytes
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32 bytes
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SHA256 hash
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SHA256 hash
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type:
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type ::
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1 byte
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1 byte
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type identifier
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type identifier
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bit 0:
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bit 0:
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@ -648,32 +649,32 @@ type:
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Through release 0.9.17, must be 0
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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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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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reply token ::
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4 bytes
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4 bytes
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If greater than zero, a <a href="#msg_DeliveryStatus">Delivery Status Message</a>
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If greater than zero, a Delivery Status Message
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is requested with the Message ID set to the value of the Reply Token.
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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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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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if the token is greater than zero.
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reply tunnelId:
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reply_tunnelId ::
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4 byte `TunnelID`
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4 byte `TunnelId`
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Only included if reply token > 0
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Only included if reply token > 0
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This is the <a href="{{ site_url('docs/spec/common-structures') }}#type_TunnelId">tunnel ID</a> of the inbound gateway of the tunnel the response should be sent to
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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 the tunnelId is zero, the reply is sent directy to the reply gateway router.
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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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reply gateway ::
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32 bytes
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32 bytes
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Hash of the routerInfo entry to reach the gateway
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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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Only included if reply token > 0
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If the tunnelId is nonzero, this is the router hash of the inbound gateway
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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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of the tunnel the response should be sent to.
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If the tunnelId is zero, this is the router hash 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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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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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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followed by a gzip-compressed `RouterInfo`.
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If type == 1, data is an uncompressed `LeaseSet`.
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If type == 1, data is an uncompressed `LeaseSet`.
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</pre>
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{% endhighlight %}
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<h4>Notes</h4>
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<h4>Notes</h4>
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<ul><li>
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<ul><li>
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@ -744,7 +745,7 @@ The key is the "real" hash of the RouterIdentity or Destination, NOT the routing
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{% endhighlight %}
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{% endhighlight %}
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||||||
|
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||||||
<h4>Definition</h4>
|
<h4>Definition</h4>
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||||||
<pre>
|
{% highlight lang='dataspec' %}
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key ::
|
key ::
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32 bytes
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32 bytes
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SHA256 hash of the object to lookup
|
SHA256 hash of the object to lookup
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@ -812,7 +813,7 @@ reply_tags ::
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one or more 32 byte `SessionTags` (typically one)
|
one or more 32 byte `SessionTags` (typically one)
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only included if encryptionFlag == 1, only as of release 0.9.7
|
only included if encryptionFlag == 1, only as of release 0.9.7
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|
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</pre>
|
{% endhighlight %}
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|
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<h4>Notes</h4>
|
<h4>Notes</h4>
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||||||
<ul><li>
|
<ul><li>
|
||||||
@ -850,17 +851,13 @@ The lookup key and exclude keys are the "real" hashes, NOT routing keys.
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+ +
|
+ +
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| |
|
| |
|
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+----+----+----+----+----+----+----+----+
|
+----+----+----+----+----+----+----+----+
|
||||||
|num | peer_hash $1 |
|
|num | peer_hashes |
|
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+----+ +
|
+----+ +
|
||||||
| |
|
| |
|
||||||
+ +
|
+ +
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||||||
| |
|
| |
|
||||||
+ +
|
+ +
|
||||||
| |
|
| |
|
||||||
+ +----+----+----+----+----+----+----+
|
|
||||||
| | |
|
|
||||||
+----+ $num peer_hashes +
|
|
||||||
|
|
||||||
+ +----+----+----+----+----+----+----+
|
+ +----+----+----+----+----+----+----+
|
||||||
| | from |
|
| | from |
|
||||||
+----+ +
|
+----+ +
|
||||||
@ -877,7 +874,7 @@ The lookup key and exclude keys are the "real" hashes, NOT routing keys.
|
|||||||
{% endhighlight %}
|
{% endhighlight %}
|
||||||
|
|
||||||
<h4>Definition</h4>
|
<h4>Definition</h4>
|
||||||
<pre>
|
{% highlight lang='dataspec' %}
|
||||||
key ::
|
key ::
|
||||||
32 bytes
|
32 bytes
|
||||||
SHA256 of the object being searched
|
SHA256 of the object being searched
|
||||||
@ -886,14 +883,14 @@ num ::
|
|||||||
1 byte `Integer`
|
1 byte `Integer`
|
||||||
number of peer hashes that follow, 0-255
|
number of peer hashes that follow, 0-255
|
||||||
|
|
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peer_hash ($num entries) ::
|
peer_hashes ::
|
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32 bytes
|
$num SHA256 hashes of 32 bytes each (total $num*32 bytes)
|
||||||
SHA256 of the `RouterIdentity` that the other router thinks is close to the key
|
SHA256 of the `RouterIdentity` that the other router thinks is close to the key
|
||||||
|
|
||||||
from ::
|
from ::
|
||||||
32 bytes
|
32 bytes
|
||||||
SHA256 of the `RouterInfo` of the router this reply was sent from
|
SHA256 of the `RouterInfo` of the router this reply was sent from
|
||||||
</pre>
|
{% endhighlight %}
|
||||||
|
|
||||||
<h4>Notes</h4>
|
<h4>Notes</h4>
|
||||||
<ul><li>
|
<ul><li>
|
||||||
@ -927,15 +924,15 @@ The lookup key, peer hashes, and from hash are "real" hashes, NOT routing keys.
|
|||||||
{% endhighlight %}
|
{% endhighlight %}
|
||||||
|
|
||||||
<h4>Definition</h4>
|
<h4>Definition</h4>
|
||||||
<pre>
|
{% highlight lang='dataspec' %}
|
||||||
msg_id ::
|
msg_id :: `Integer`
|
||||||
4 bytes
|
4 bytes
|
||||||
unique ID of the message we deliver the DeliveryStatus for (see common I2NP header for details)
|
unique ID of the message we deliver the DeliveryStatus for (see `I2NPMessageHeader` for details)
|
||||||
|
|
||||||
time_stamp :: Date
|
time_stamp :: `Date`
|
||||||
8 bytes
|
8 bytes
|
||||||
time the message was successfully created or delivered
|
time the message was successfully created or delivered
|
||||||
</pre>
|
{% endhighlight %}
|
||||||
|
|
||||||
<h4>Notes</h4>
|
<h4>Notes</h4>
|
||||||
<ul><li>
|
<ul><li>
|
||||||
@ -990,11 +987,11 @@ unencrypted data:
|
|||||||
{% endhighlight %}
|
{% endhighlight %}
|
||||||
|
|
||||||
<h4>Definition</h4>
|
<h4>Definition</h4>
|
||||||
<pre>
|
{% highlight lang='dataspec' %}
|
||||||
Encrypted:
|
Encrypted:
|
||||||
|
|
||||||
length ::
|
length ::
|
||||||
4 byte Integer
|
4 byte `Integer`
|
||||||
number of bytes that follow 0 - 64 KB
|
number of bytes that follow 0 - 64 KB
|
||||||
|
|
||||||
data ::
|
data ::
|
||||||
@ -1005,7 +1002,7 @@ data ::
|
|||||||
Unencrypted data:
|
Unencrypted data:
|
||||||
|
|
||||||
num ::
|
num ::
|
||||||
1 byte Integer number of `GarlicCloves` to follow
|
1 byte `Integer` number of `GarlicClove`s to follow
|
||||||
|
|
||||||
clove :: a `GarlicClove`
|
clove :: a `GarlicClove`
|
||||||
|
|
||||||
@ -1015,7 +1012,7 @@ Message_ID :: 4 byte `Integer`
|
|||||||
|
|
||||||
Expiration :: `Date` (8 bytes)
|
Expiration :: `Date` (8 bytes)
|
||||||
|
|
||||||
</pre>
|
{% endhighlight %}
|
||||||
|
|
||||||
<h4>Notes</h4>
|
<h4>Notes</h4>
|
||||||
<ul>
|
<ul>
|
||||||
@ -1065,15 +1062,15 @@ Expiration :: `Date` (8 bytes)
|
|||||||
{% endhighlight %}
|
{% endhighlight %}
|
||||||
|
|
||||||
<h4>Definition</h4>
|
<h4>Definition</h4>
|
||||||
<pre>
|
{% highlight lang='dataspec' %}
|
||||||
tunnelId ::
|
tunnelId ::
|
||||||
4 byte `TunnelID`
|
4 byte `TunnelId`
|
||||||
identifies the tunnel this message is directed at
|
identifies the tunnel this message is directed at
|
||||||
|
|
||||||
data ::
|
data ::
|
||||||
1024 bytes
|
1024 bytes
|
||||||
payload data.. fixed to 1024 bytes
|
payload data.. fixed to 1024 bytes
|
||||||
</pre>
|
{% endhighlight %}
|
||||||
|
|
||||||
<h4>Notes</h4>
|
<h4>Notes</h4>
|
||||||
<ul>
|
<ul>
|
||||||
@ -1097,9 +1094,9 @@ data ::
|
|||||||
{% endhighlight %}
|
{% endhighlight %}
|
||||||
|
|
||||||
<h4>Definition</h4>
|
<h4>Definition</h4>
|
||||||
<pre>
|
{% highlight lang='dataspec' %}
|
||||||
tunnelId ::
|
tunnelId ::
|
||||||
4 byte `TunnelID`
|
4 byte `TunnelId`
|
||||||
identifies the tunnel this message is directed at
|
identifies the tunnel this message is directed at
|
||||||
|
|
||||||
length ::
|
length ::
|
||||||
@ -1109,7 +1106,7 @@ length ::
|
|||||||
data ::
|
data ::
|
||||||
$length bytes
|
$length bytes
|
||||||
actual payload of this message
|
actual payload of this message
|
||||||
</pre>
|
{% endhighlight %}
|
||||||
|
|
||||||
<h4>Notes</h4>
|
<h4>Notes</h4>
|
||||||
<ul>
|
<ul>
|
||||||
@ -1134,7 +1131,7 @@ data ::
|
|||||||
{% endhighlight %}
|
{% endhighlight %}
|
||||||
|
|
||||||
<h4>Definition</h4>
|
<h4>Definition</h4>
|
||||||
<pre>
|
{% highlight lang='dataspec' %}
|
||||||
length ::
|
length ::
|
||||||
4 bytes
|
4 bytes
|
||||||
length of the payload
|
length of the payload
|
||||||
@ -1142,7 +1139,7 @@ length ::
|
|||||||
data ::
|
data ::
|
||||||
$length bytes
|
$length bytes
|
||||||
actual payload of this message
|
actual payload of this message
|
||||||
</pre>
|
{% endhighlight %}
|
||||||
|
|
||||||
<h3 id="msg_TunnelBuild">TunnelBuild</h3>
|
<h3 id="msg_TunnelBuild">TunnelBuild</h3>
|
||||||
{% highlight lang='dataspec' %}
|
{% highlight lang='dataspec' %}
|
||||||
@ -1162,11 +1159,11 @@ data ::
|
|||||||
{% endhighlight %}
|
{% endhighlight %}
|
||||||
|
|
||||||
<h4>Definition</h4>
|
<h4>Definition</h4>
|
||||||
<pre>
|
{% highlight lang='dataspec' %}
|
||||||
Just 8 `BuildRequestRecords` attached together
|
Just 8 `BuildRequestRecord`s attached together
|
||||||
record size: 528 bytes
|
record size: 528 bytes
|
||||||
total size: 8*528 = 4224 bytes
|
total size: 8*528 = 4224 bytes
|
||||||
</pre>
|
{% endhighlight %}
|
||||||
|
|
||||||
<h4>Notes</h4>
|
<h4>Notes</h4>
|
||||||
<ul>
|
<ul>
|
||||||
@ -1179,7 +1176,7 @@ total size: 8*528 = 4224 bytes
|
|||||||
|
|
||||||
<h3 id="msg_TunnelBuildReply">TunnelBuildReply</h3>
|
<h3 id="msg_TunnelBuildReply">TunnelBuildReply</h3>
|
||||||
{% highlight lang='dataspec' %}
|
{% highlight lang='dataspec' %}
|
||||||
same format as `TunnelBuild` message, with `BuildResponseRecords`
|
same format as `TunnelBuild` message, with `BuildResponseRecord`s
|
||||||
{% endhighlight %}
|
{% endhighlight %}
|
||||||
|
|
||||||
<h4>Notes</h4>
|
<h4>Notes</h4>
|
||||||
@ -1198,8 +1195,8 @@ same format as `TunnelBuild` message, with `BuildResponseRecords`
|
|||||||
{% endhighlight %}
|
{% endhighlight %}
|
||||||
|
|
||||||
<h4>Definition</h4>
|
<h4>Definition</h4>
|
||||||
<pre>
|
{% highlight lang='dataspec' %}
|
||||||
Same format as TunnelBuildMessage, except for the addition of an "num" field in front
|
Same format as TunnelBuildMessage, except for the addition of a $num field in front
|
||||||
and $num number of Build Request Records instead of 8
|
and $num number of Build Request Records instead of 8
|
||||||
|
|
||||||
num ::
|
num ::
|
||||||
@ -1207,8 +1204,8 @@ num ::
|
|||||||
Valid values: 1-8
|
Valid values: 1-8
|
||||||
|
|
||||||
record size: 528 bytes
|
record size: 528 bytes
|
||||||
total size: 1 + $num*528
|
total size: 1+$num*528
|
||||||
</pre>
|
{% endhighlight %}
|
||||||
|
|
||||||
<h4>Notes</h4>
|
<h4>Notes</h4>
|
||||||
<ul>
|
<ul>
|
||||||
|
Reference in New Issue
Block a user