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1.2 WIP at least doesn't crash

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This commit is contained in:
Kevin Hester
2021-02-21 12:59:47 +08:00
parent 587102f6bc
commit 99467cd874
12 changed files with 89 additions and 76 deletions
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95
src/mesh/DSRRouter.cpp
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@@ -62,7 +62,7 @@ ErrorCode DSRRouter::send(MeshPacket *p)
return ReliableRouter::send(p);
}
void DSRRouter::sniffReceived(const MeshPacket *p, const Routing &c)
void DSRRouter::sniffReceived(const MeshPacket *p, const Routing *c)
{
// Learn 0 hop routes by just hearing any adjacent nodes
// But treat broadcasts carefully, because when flood broadcasts go out they keep the same original "from". So we want to
@@ -72,47 +72,49 @@ void DSRRouter::sniffReceived(const MeshPacket *p, const Routing &c)
addRoute(p->from, p->from, 0); // We are adjacent with zero hops
}
switch (c.which_variant) {
case Routing_route_request_tag:
// Handle route discovery packets (will be a broadcast message)
// FIXME - always start request with the senders nodenum
if (weAreInRoute(c.route_request)) {
DEBUG_MSG("Ignoring a route request that contains us\n");
} else {
updateRoutes(c.route_request,
true); // Update our routing tables based on the route that came in so far on this request
if (p->decoded.dest == getNodeNum()) {
// They were looking for us, send back a route reply (the sender address will be first in the list)
sendRouteReply(c.route_request);
if (c)
switch (c->which_variant) {
case Routing_route_request_tag:
// Handle route discovery packets (will be a broadcast message)
// FIXME - always start request with the senders nodenum
if (weAreInRoute(c->route_request)) {
DEBUG_MSG("Ignoring a route request that contains us\n");
} else {
// They were looking for someone else, forward it along (as a zero hop broadcast)
NodeNum nextHop = getNextHop(p->decoded.dest);
if (nextHop) {
// in our route cache, reply to the requester (the sender address will be first in the list)
sendRouteReply(c.route_request, nextHop);
updateRoutes(c->route_request,
true); // Update our routing tables based on the route that came in so far on this request
if (p->decoded.dest == getNodeNum()) {
// They were looking for us, send back a route reply (the sender address will be first in the list)
sendRouteReply(c->route_request);
} else {
// Not in our route cache, rebroadcast on their behalf (after adding ourselves to the request route)
resendRouteRequest(p);
// They were looking for someone else, forward it along (as a zero hop broadcast)
NodeNum nextHop = getNextHop(p->decoded.dest);
if (nextHop) {
// in our route cache, reply to the requester (the sender address will be first in the list)
sendRouteReply(c->route_request, nextHop);
} else {
// Not in our route cache, rebroadcast on their behalf (after adding ourselves to the request route)
resendRouteRequest(p);
}
}
}
break;
case Routing_route_reply_tag:
updateRoutes(c->route_reply, false);
// FIXME, if any of our current pending packets were waiting for this route, send them (and leave them as regular
// pending packets until ack arrives)
// FIXME, if we don't get a route reply at all (or a route error), timeout and generate a routeerror TIMEOUT on our
// own...
break;
case Routing_error_reason_tag:
removeRoute(p->decoded.dest);
// FIXME: if any pending packets were waiting on this route, delete them
break;
default:
break;
}
break;
case Routing_route_reply_tag:
updateRoutes(c.route_reply, false);
// FIXME, if any of our current pending packets were waiting for this route, send them (and leave them as regular pending
// packets until ack arrives)
// FIXME, if we don't get a route reply at all (or a route error), timeout and generate a routeerror TIMEOUT on our own...
break;
case Routing_error_reason_tag:
removeRoute(p->decoded.dest);
// FIXME: if any pending packets were waiting on this route, delete them
break;
default:
break;
}
// We simply ignore ACKs - because ReliableRouter will delete the pending packet for us
@@ -137,15 +139,18 @@ void DSRRouter::sniffReceived(const MeshPacket *p, const Routing &c)
// FIXME, stop local processing of this packet
}
// handle naks - convert them to route error packets
// All naks are generated locally, because we failed resending the packet too many times
PacketId nakId = c.fail_id;
if (nakId) {
auto pending = findPendingPacket(p->to, nakId);
if (pending && pending->packet->decoded.source) { // if source not set, this was not a multihop packet, just ignore
removeRoute(pending->packet->decoded.dest); // We no longer have a route to the specified node
if (c) {
// handle naks - convert them to route error packets
// All naks are generated locally, because we failed resending the packet too many times
PacketId nakId = c->fail_id;
if (nakId) {
auto pending = findPendingPacket(p->to, nakId);
if (pending &&
pending->packet->decoded.source) { // if source not set, this was not a multihop packet, just ignore
removeRoute(pending->packet->decoded.dest); // We no longer have a route to the specified node
sendRouteError(p, Routing_Error_GOT_NAK);
sendRouteError(p, Routing_Error_GOT_NAK);
}
}
}
}