Docs and a small build fix in debug mode.
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2 changed files with 44 additions and 45 deletions
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@ -538,8 +538,7 @@ public:
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* <[2] software revision>
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* <[8] timestamp for determining latency>
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* <[...] binary serialized identity (see Identity)>
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* <[1] destination address type>
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* [<[...] destination address to which packet was sent>]
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* <[...] physical destination address of packet>
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* <[8] 64-bit world ID of current planet>
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* <[8] 64-bit timestamp of current planet>
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* [... remainder if packet is encrypted using cryptField() ...]
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@ -547,40 +546,39 @@ public:
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* [<[1] 8-bit type ID of moon>]
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* [<[8] 64-bit world ID of moon>]
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* [<[8] 64-bit timestamp of moon>]
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* [... additional moons ...]
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* [... additional moon type/ID/timestamp tuples ...]
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* <[2] 16-bit length of certificate of representation>
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* [... certificate of representation ...]
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*
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* The initial fields of HELLO are sent in the clear. Fields after the
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* planet definition (which are common knowledge) are however encrypted
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* using the cryptField() function. The packet is MAC'd as usual using
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* the same MAC construct as other packets.
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* HELLO is sent in the clear as it is how peers share their identity
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* public keys. A few additional fields are sent in the clear too, but
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* these are things that are public info or are easy to determine. As
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* of 1.2.0 we have added a few more fields, but since these could have
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* the potential to be sensitive we introduced the encryption of the
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* remainder of the packet. See cryptField(). Packet MAC is still
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* performed of course, so authentication occurs as normal.
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*
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* The destination address is the wire address to which this packet is
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* being sent, and in OK is *also* the destination address of the OK
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* packet. This can be used by the receiver to detect NAT, learn its real
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* external address if behind NAT, and detect changes to its external
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* address that require re-establishing connectivity.
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* Destination address is the actual wire address to which the packet
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* was sent. See InetAddress::serialize() for format.
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*
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* Destination address types and formats (not all of these are used now):
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* 0x00 - None -- no destination address data present
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* 0x01 - Ethernet address -- format: <[6] Ethernet MAC>
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* 0x04 - 6-byte IPv4 UDP address/port -- format: <[4] IP>, <[2] port>
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* 0x06 - 18-byte IPv6 UDP address/port -- format: <[16] IP>, <[2] port>
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*
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* OK payload (note that OK is encrypted):
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* <[8] timestamp (echoed from original HELLO)>
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* <[1] protocol version (of responder)>
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* <[1] software major version (of responder)>
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* <[1] software minor version (of responder)>
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* <[2] software revision (of responder)>
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* <[1] destination address type (for this OK, not copied from HELLO)>
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* [<[...] destination address>]
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* <[2] 16-bit length of world update or 0 if none>
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* OK payload:
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* <[8] HELLO timestamp field echo>
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* <[1] protocol version>
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* <[1] software major version>
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* <[1] software minor version>
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* <[2] software revision>
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* <[...] physical destination address of packet>
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* <[2] 16-bit length of world update(s) or 0 if none>
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* [[...] updates to planets and/or moons]
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* <[2] 16-bit length of certificate of representation (of responder)>
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* <[2] 16-bit length of certificate of representation>
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* [... certificate of representation ...]
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*
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* With the exception of the timestamp, the other fields pertain to the
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* respondent who is sending OK and are not echoes.
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*
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* Note that OK is fully encrypted so no selective cryptField() of
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* potentially sensitive fields is needed.
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*
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* ERROR has no payload.
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*/
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VERB_HELLO = 0x01,
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