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Detect abbreviation collisions with multiple identities

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This commit is contained in:
Jeremy Lakeman 2014-05-07 17:02:32 +09:30
parent 7a2f1536bc
commit 7a3095de09
1 changed files with 18 additions and 0 deletions
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18
route_link.c
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@ -1302,6 +1302,14 @@ int link_receive(struct internal_mdp_header *header, struct overlay_buffer *payl
ack_mask,
drop_rate);
if (transmitter && transmitter!=my_subscriber && transmitter->reachable==REACHABLE_SELF){
// Our neighbour is talking about a path *from* a secondary SID of ours? Impossible.
// Maybe we decoded an abbreviation incorrectly and this indicates a SID collision.
// TODO add a test for this case!
transmitter->send_full=1;
continue;
}
if (receiver == my_subscriber){
// track if our neighbour is using us as an immediate neighbour, if they are we need to ack / nack promptly
neighbour->using_us = (transmitter==header->source?1:0);
@ -1310,6 +1318,16 @@ int link_receive(struct internal_mdp_header *header, struct overlay_buffer *payl
// we can always send packets to ourself :)
continue;
}
if (receiver->reachable == REACHABLE_SELF){
if (transmitter && transmitter!=my_subscriber){
// An alternative path to a secondary SID, that isn't via me? Impossible.
// Maybe we decoded an abbreviation incorrectly and this indicates a SID collision.
// TODO add a test for this case!
receiver->send_full=1;
continue;
}
}
struct network_destination *destination=NULL;