hydra-cluster: Retry connection on HandshakeException

[ch1bo]

The hydra-node websocket client can also just fail with a 'HandshakeException' from 'websockets'.

Seems like this broke in #1232.

Hypothesis: a newer websockets library fails now differently

---

• CHANGELOG updated or not needed
• Documentation updated or not needed
• Haddocks updated or not needed
• No new TODOs introduced or explained herafter

[github-actions]

Transactions Costs

Sizes and execution budgets for Hydra protocol transactions. Note that unlisted parameters are currently using arbitrary values and results are not fully deterministic and comparable to previous runs.

Metadata
Generated at	2024-02-05 13:59:13.790260315 UTC
Max. memory units	14000000
Max. CPU units	10000000000
Max. tx size (kB)	16384

Script summary

Name	Hash	Size (Bytes)
νInitial	985245919fcc6c0c5cd116023cd2c947c43e80dcbb5075fe12433fbb	4072
νCommit	7cb20fa71eb4c563ca283566ebe0aa65859d96c3f8cba35c52c181fd	2043
νHead	7a36661f5c15e9f1783aeaab890812c59b7286cbbc6de762d3110772	8816
μHead	8b111ac12274e46314769295a1c5dcab1d260096fc469fd698065463*	3851

• The minting policy hash is only usable for comparison. As the script is parameterized, the actual script is unique per Head.

Cost of Init Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	4372	10.59	4.09	0.46
2	4576	12.66	4.87	0.49
3	4778	14.83	5.69	0.52
5	5180	19.12	7.31	0.59
10	6185	30.30	11.55	0.75
41	12417	99.02	37.59	1.77

Cost of Commit Transaction

This is using ada-only outputs for better comparability.

UTxO	Tx size	% max Mem	% max CPU	Min fee ₳
1	534	11.37	4.44	0.30
2	720	15.04	6.07	0.35
3	912	18.85	7.75	0.40
5	1285	26.90	11.27	0.51
10	2213	49.55	20.97	0.80
19	3907	99.43	41.75	1.43

Cost of CollectCom Transaction

Parties	UTxO (bytes)	Tx size	% max Mem	% max CPU	Min fee ₳
1	57	480	21.12	8.27	0.40
2	114	590	32.26	12.75	0.53
3	171	700	48.32	19.16	0.71
4	227	810	61.57	24.64	0.86
5	281	920	78.89	31.71	1.06
6	337	1031	93.67	37.99	1.23

Cost of Close Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	549	16.72	7.70	0.37
2	706	18.41	9.28	0.40
3	806	19.41	10.26	0.42
5	1257	23.89	14.23	0.50
10	2019	30.97	21.02	0.64
50	7952	89.55	76.61	1.78

Cost of Contest Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	516	19.82	8.62	0.40
2	768	22.21	10.68	0.44
3	928	23.83	12.08	0.47
5	1278	27.79	15.48	0.54
10	1833	34.92	21.80	0.67
48	7677	99.75	78.35	1.86

Cost of Abort Transaction

Some variation because of random mixture of still initial and already committed outputs.

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	4318	18.89	8.13	0.55
2	4425	31.03	13.44	0.69
3	4627	46.48	20.34	0.88
4	4685	58.29	25.41	1.01
5	4811	83.02	36.43	1.30

Cost of FanOut Transaction

Involves spending head output and burning head tokens. Uses ada-only UTxO for better comparability.

Parties	UTxO	UTxO (bytes)	Tx size	% max Mem	% max CPU	Min fee ₳
5	0	0	4206	7.84	3.28	0.42
5	1	57	4239	8.65	3.87	0.43
5	5	284	4375	13.77	7.00	0.50
5	10	570	4546	19.80	10.76	0.59
5	20	1140	4886	32.22	18.44	0.76
5	30	1705	5222	44.73	26.16	0.93
5	40	2278	5565	56.83	33.70	1.10
5	50	2845	5902	69.14	41.34	1.27
5	75	4264	6746	99.74	60.36	1.69

End-To-End Benchmark Results

This page is intended to collect the latest end-to-end benchmarks results produced by Hydra's Continuous Integration system from the latest master code.

Please take those results with a grain of salt as they are currently produced from very limited cloud VMs and not controlled hardware. Instead of focusing on the absolute results, the emphasis should be on relative results, eg. how the timings for a scenario evolve as the code changes.

Generated at 2024-02-05 14:03:27.033633688 UTC

Baseline Scenario

Number of nodes	3
Number of txs	9000
Avg. Confirmation Time (ms)	22.439388451
P99	115.20492983000007ms
P95	31.441983449999977ms
P50	19.4091265ms
Number of Invalid txs	0

Baseline Scenario

Number of nodes	1
Number of txs	3000
Avg. Confirmation Time (ms)	4.075556817
P99	7.334007379999998ms
P95	4.889247549999999ms
P50	3.9392389999999997ms
Number of Invalid txs	0

[github-actions]

Test Results

408 tests   401 ✅  12m 52s ⏱️
138 suites    7 💤
  5 files      0 ❌

Results for commit 3475627.