diff options
Diffstat (limited to 'node/Packet.hpp')
| -rw-r--r-- | node/Packet.hpp | 39 |
1 files changed, 33 insertions, 6 deletions
diff --git a/node/Packet.hpp b/node/Packet.hpp index 6f3f9117..c9269a82 100644 --- a/node/Packet.hpp +++ b/node/Packet.hpp @@ -225,6 +225,16 @@ #define ZT_PROTO_VERB_NETWORK_CONFIG_REQUEST__OK__IDX_DICT_LEN (ZT_PROTO_VERB_NETWORK_CONFIG_REQUEST__OK__IDX_NETWORK_ID + 8) #define ZT_PROTO_VERB_NETWORK_CONFIG_REQUEST__OK__IDX_DICT (ZT_PROTO_VERB_NETWORK_CONFIG_REQUEST__OK__IDX_DICT_LEN + 2) +#define ZT_PROTO_VERB_PROBE_IDX_TIMESTAMP (ZT_PACKET_IDX_PAYLOAD) +#define ZT_PROTO_VERB_PROBE_LEN_TIMESTAMP 8 +#define ZT_PROTO_VERB_PROBE_IDX_MS_SINCE_LAST_SEND (ZT_PROTO_VERB_PROBE_IDX_TIMESTAMP + ZT_PROTO_VERB_PROBE_LEN_TIMESTAMP) +#define ZT_PROTO_VERB_PROBE_LEN_MS_SINCE_LAST_SEND 8 + +#define ZT_PROTO_VERB_PROBE__OK__IDX_TIMESTAMP (ZT_PACKET_IDX_PAYLOAD) +#define ZT_PROTO_VERB_PROBE__OK__LEN_TIMESTAMP 8 +#define ZT_PROTO_VERB_PROBE__OK__IDX_MS_SINCE_LAST_SEND (ZT_PROTO_VERB_PROBE_IDX_TIMESTAMP + ZT_PROTO_VERB_PROBE_LEN_TIMESTAMP) +#define ZT_PROTO_VERB_PROBE__OK__LEN_MS_SINCE_LAST_SEND 8 + // --------------------------------------------------------------------------- namespace ZeroTier { @@ -457,11 +467,7 @@ public: * send this to both peers at the same time on a periodic basis, telling * each where it might find the other on the network. * - * Upon receipt, a peer sends a message such as NOP or HELLO to the other - * peer. Peers only "learn" one anothers' direct addresses when they - * successfully *receive* a message and authenticate it. Optionally, peers - * will usually preface these messages with one or more firewall openers - * to clear the path. + * Upon receipt a peer sends HELLO to establish a direct link. * * Nodes should implement rate control, limiting the rate at which they * respond to these packets to prevent their use in DDOS attacks. Nodes @@ -615,7 +621,28 @@ public: * It does not generate an OK or ERROR message, and is treated only as * a hint to refresh now. */ - VERB_NETWORK_CONFIG_REFRESH = 12 + VERB_NETWORK_CONFIG_REFRESH = 12, + + /* Probe peer connection status: + * <[8] 64-bit timestamp> + * <[8] 64-bit milliseconds since last send to this peer> + * + * This message is sent to probe the status of a peer and to confirm + * new link-layer addresses. Upon receipt an OK is generated which + * echoes the time and responds with the number of milliseconds since + * the recipient has last sent a packet to the sender. + * + * Using these delay times, a peer may determine if its current route + * to another peer is likely dead and default to another route (e.g. + * reverting to relaying). + * + * OK response payload: + * <[8] 64-bit timestamp echoed from request> + * <[8] 64-bit milliseconds since last send to requesitng peer> + * + * ERROR is not generated. + */ + VERB_PROBE = 13 }; /** |