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Add code to check external surface against reported surface from other trusted peers, and also rename ExternalSurface to SelfAwareness because lulz.

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Adam Ierymenko
2015-04-06 20:17:21 -07:00
parent 76ad19f411
commit a2821e9000
6 changed files with 83 additions and 40 deletions
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25
node/Packet.hpp
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@ -175,6 +175,12 @@
*/
#define ZT_PROTO_BEACON_IDX_ADDRESS 8
// Destination address types from HELLO and OK(HELLO)
#define ZT_PROTO_DEST_ADDRESS_TYPE_NONE 0
#define ZT_PROTO_DEST_ADDRESS_TYPE_ETHERNET 1
#define ZT_PROTO_DEST_ADDRESS_TYPE_IPV4 4
#define ZT_PROTO_DEST_ADDRESS_TYPE_IPV6 6
// Field incides for parsing verbs -------------------------------------------
// Some verbs have variable-length fields. Those aren't fully defined here
@ -467,6 +473,23 @@ public:
* <[2] software revision>
* <[8] timestamp (ms since epoch)>
* <[...] binary serialized identity (see Identity)>
* <[1] destination address type>
* [<[...] destination address>]
*
* This is the only message that ever must be sent in the clear, since it
* is used to push an identity to a new peer.
*
* The destination address is the wire address to which this packet is
* being sent, and in OK is *also* the destination address of the OK
* packet. This can be used by the receiver to detect NAT, learn its real
* external address if behind NAT, and detect changes to its external
* address that require re-establishing connectivity.
*
* Destination address types and formats (not all of these are used now):
* 0 - None -- no destination address data present
* 1 - Ethernet address -- format: <[6] Ethernet MAC>
* 4 - 6-byte IPv4 address -- format: <[4] IP>, <[2] port>
* 6 - 18-byte IPv6 address -- format: <[16] IP>, <[2] port>
*
* OK payload:
* <[8] timestamp (echoed from original HELLO)>
@ -474,6 +497,8 @@ public:
* <[1] software major version (of responder)>
* <[1] software minor version (of responder)>
* <[2] software revision (of responder)>
* <[1] destination address type (for this OK, not copied from HELLO)>
* [<[...] destination address>]
*
* ERROR has no payload.
*/