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* avoid stalled sourcetv16 hours1-2/+24
| | | | | | | | | | | | | A source given up for not answering our sync messages could become the source again straight away. Whoever asks first after the reset takes the role, and that's often the same peer, which would then stall for another delivery limit. Now, a stalled source isn't chosen again for one more delivery_limit. If it's the only candidate, catching up waits that long and then tries it again. Before, a retry with that peer couldn't have helped any sooner anyway: a source is only given up after a whole delivery limit without a sync message, and that clock restarts when it is chosen again.
* MYCELIUM_DELIVERY_LIMIT -> Timing::delivery_limittv16 hours1-6/+3
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* recompute neighbours whenever topology changestv16 hours4-5/+40
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* run peer worker when becoming readytv16 hours1-0/+8
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* newly added neighbour get a sync attempttv17 hours1-3/+12
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* add simulation testtv17 hours1-1/+4
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* require catch-up source to make progresstv18 hours2-1/+92
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* late messages don't flip peer's epoch backtv18 hours3-12/+56
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* allow to persist documenttv18 hours1-22/+145
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* add files module to consistently track statstv25 hours3-91/+34
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* warn about unresolvable seeds once; log successtv25 hours1-7/+22
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* add disk I/O statstv25 hours3-24/+78
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* add possibility to start with a documenttv25 hours1-4/+61
| | | | The --recover-from option allows a node start with a given document.
* add state filetv27 hours4-2/+222
| | | | | This allows storing the swarm ID and additionally discovered seeds, which prevents a formerly genesis node to start a new document.
* put swarm ID into the documenttv27 hours1-3/+19
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* add genesis flag and never give uptv27 hours1-65/+87
| | | | | | | | | The --genesis flag has been introduced to start with a new document. This prevents restarts to accidentally start with a new document and accept reads/writes, causing a second swarm to appear. Additionally, bootstrapping doesn't timeout anymore as that's of no use for nobody.
* bound stable-hub degreetv43 hours1-4/+46
| | | | | | Each stable member can be preferred at most by 4*k members. The budget is spent in key order, which is the same on every node, so the graph stays deterministic, symmetric and connected.
* coalesce announcementstv43 hours1-2/+56
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* cache headstv43 hours3-6/+11
| | | | To reduce the number of write locks, heads are now cached.
* being caught up needs some headstv44 hours1-5/+9
| | | | | | | | | | | A sync message from a ready peer only completes the initial sync if that peer has at least one head. A peer with an empty document can no longer make a joiner ready on an empty store: a misconfigured second swarm, or a genesis node in its first seconds. Effect on a brand-new swarm: a joiner now waits until the genesis node has registered itself in the member list, which happens within about 5 s of it becoming ready.
* put remake content into blobstv45 hours1-4/+21
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* add chunked download and use it during rejointv47 hours5-1/+502
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* add electoratetv2 days1-8/+101
| | | | | For an upcoming change in remake coordination, nodes now maintain their self-assessed liveness in the document.
* aliases are not in logs (fixup)tv2 days1-1/+1
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* measure document saved-size only after changestv2 days1-17/+39
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* add endpoint to export the documenttv2 days1-0/+9
| | | | GET /admin/document to retrieve the automerge document.
* add node aliasestv2 days1-11/+78
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* add throughput statstv2 days4-1/+192
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* add propagation statstv2 days2-0/+89
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* add swarm statstv2 days7-1/+235
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* add traffic countertv2 days1-0/+4
| | | | | | | | | | This introduces a new wrapper that counts messages and payload bytes per peer, split by kind (hello, helloReply, sync, ping, pong), each sent, received and refused. The traffic counter goes around the firewall, which means messages dropped outbound are still counted as sent, and messages dropped inbound don't count as received.
* nodes prefer stable neighbourstv2 days1-10/+89
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* assess swarm stabilitytv2 days4-11/+321
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* record RTT sampling instanttv2 days2-27/+95
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* prefer closer sources to catch uptv2 days1-3/+42
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* record RTT from keepalive messagestv2 days4-14/+130
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* pull missing changestv2 days5-5/+159
| | | | | | Nodes push changes to their neighbours but don't relay them directly. In a partial mesh, nodes can learn about missing changes via keepalive messages and can pull them from their neighbours.
* find reachable neighbourstv2 days2-55/+132
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* sync with neighbourstv2 days3-4/+142
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* add neighbour graphtv2 days2-0/+180
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* add member registrytv2 days3-0/+69
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* use nonce in handshaketv3 days1-2/+14
| | | | | To prevent stale hello replies to cause joins and thus stale sessions, each run gets a random ID, which used as nonce in the handshake.
* consolidate backoff codetv3 days1-29/+15
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* retry using fresh messagestv3 days1-158/+127
| | | | | Don't store encoded messages but retry using a newly generated one. That way any accumulated changes can be delivered at once.
* drop stall breaker; resend needed changestv3 days1-65/+21
| | | | | | The stall breaker was superseded by regular re-handshaking Re-handshaking also gets triggered, when a node needs some of the heads its peer believes it has already sent. In that case the peer now resends what's needed.
* no heal during catch-uptv3 days1-1/+6
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* peers that just became ready get syncstv3 days1-0/+9
| | | | | | When keepalive says ready and we didn't have taht on record before, the peer is queued for sync. Hello and hello reply don't do this because the handshake already queues a sync.
* both sides may open sync after resettv3 days3-42/+28
| | | | | | | | | | Ready nodes will leave the first message to the pear that isn't ready. Hello and hello reply now carry ready, so readiness is known from the very first contact, before any sync. Together with the sync messages and keepalives, reports_ready is always current. After epoch switch, pings go to everyone except ready members already on the new epoch, these learn from the lagging peer's opening.
* perform handshake in one round triptv3 days3-78/+68
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* drop pre-membership sync messagestv3 days3-43/+10
| | | | | The handshake resets the session anyway, and the sender's reply timeout resends what still matters.
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