mozilla / neqo - Duplication

Intro

For duplication, we look at places in code where there are 6 or more lines of code that are exactly the same.
Before duplication is calculated, the code is cleaned to remove empty lines, comments, and frequently duplicated constructs such as imports.
You should aim at having as little as possible (<5%) of duplicated code as high-level of duplication can lead to maintenance difficulties, poor factoring, and logical contradictions.

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Duplication Overall

11% duplication:

44,314 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
5,304 duplicated lines

965 duplicates

dependency graphs: 2D graph | 3D graph | 3D graph (with duplicates)...

Duplication per Extension

Duplication per Component (primary)

Duplication Between Components (50+ lines)

Download: SVG DOT (open online Graphviz editor)

From Component --> To Component	Duplicated Lines	File Pairs	Details
neqo-crypto (1%) --> neqo-transport (<1%)	114	9 file pairs	details...
neqo-common (3%) --> neqo-transport (<1%)	82	7 file pairs	details...
neqo-common (2%) --> neqo-crypto (<1%)	72	3 file pairs	details...
neqo-http3 (<1%) --> neqo-transport (<1%)	66	5 file pairs	details...

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Longest Duplicates

The list of 50 longest duplicates.

See data for all 965 duplicates...

Size	#	Folders	Files	Lines	Code
36	x 2	neqo-http3/src neqo-http3/src	connection_client.rs connection_client.rs	3670:3723 (<1%) 3795:3847 (<1%)	view
31	x 2	neqo-http3/src neqo-http3/src	connection_client.rs connection_client.rs	4703:4744 (<1%) 4773:4814 (<1%)	view
29	x 2	fuzz/fuzz_targets fuzz/fuzz_targets	client_initial.rs server_initial.rs	24:58 (52%) 27:61 (51%)	view
27	x 2	neqo-http3/src neqo-http3/src	connection_client.rs connection_client.rs	4642:4677 (<1%) 4773:4808 (<1%)	view
27	x 2	neqo-http3/src neqo-http3/src	connection_client.rs connection_client.rs	4642:4677 (<1%) 4703:4738 (<1%)	view
24	x 2	neqo-qpack/src neqo-qpack/src	decoder.rs encoder.rs	639:664 (4%) 756:781 (2%)	view
24	x 2	neqo-qpack/src neqo-qpack/src	decoder.rs encoder.rs	609:637 (4%) 726:754 (2%)	view
23	x 2	neqo-qpack/src neqo-qpack/src	decoder.rs encoder.rs	719:743 (4%) 831:855 (2%)	view
23	x 2	neqo-http3/src neqo-http3/src	connection_client.rs connection_client.rs	6425:6453 (<1%) 6690:6718 (<1%)	view
23	x 2	neqo-qpack/src neqo-qpack/src	decoder.rs encoder.rs	690:717 (4%) 802:829 (2%)	view
22	x 2	neqo-http3/src neqo-http3/src	connection_client.rs connection_client.rs	5472:5496 (<1%) 5518:5542 (<1%)	view
19	x 2	neqo-qpack/src neqo-qpack/src	encoder.rs encoder.rs	1267:1296 (1%) 1309:1338 (1%)	view
19	x 2	neqo-http3/src neqo-http3/src	connection_client.rs connection_client.rs	6270:6290 (<1%) 6343:6363 (<1%)	view
19	x 2	neqo-transport/src/cc neqo-transport/src/cc	classic_cc.rs classic_cc.rs	1068:1088 (2%) 1181:1201 (2%)	view
19	x 2	neqo-qpack/src neqo-qpack/src	encoder.rs encoder.rs	1360:1393 (1%) 1404:1437 (1%)	view
18	x 2	neqo-transport/src/cc neqo-transport/src/cc	classic_cc.rs classic_cc.rs	1097:1115 (1%) 1216:1234 (1%)	view
18	x 2	neqo-http3/src neqo-http3/src	connection_client.rs connection_client.rs	3177:3203 (<1%) 3297:3323 (<1%)	view
17	x 2	neqo-http3/src neqo-http3/src	connection_client.rs connection_client.rs	5055:5073 (<1%) 5303:5321 (<1%)	view
17	x 2	neqo-qpack/src neqo-qpack/src	encoder.rs encoder.rs	1360:1387 (1%) 1478:1506 (1%)	view
17	x 2	neqo-http3/src neqo-http3/src	connection_client.rs connection_client.rs	5350:5371 (<1%) 5391:5413 (<1%)	view
17	x 2	neqo-qpack/src neqo-qpack/src	decoder.rs decoder.rs	661:688 (3%) 740:767 (3%)	view
17	x 2	neqo-qpack/src neqo-qpack/src	encoder.rs encoder.rs	1404:1431 (1%) 1478:1506 (1%)	view
16	x 2	neqo-http3/src neqo-http3/src	connection_client.rs connection_client.rs	2625:2642 (<1%) 3741:3759 (<1%)	view
16	x 2	neqo-transport/src neqo-transport/src	crypto.rs crypto.rs	1444:1459 (1%) 1464:1479 (1%)	view
16	x 2	neqo-http3/src neqo-http3/src	connection_client.rs connection_client.rs	4001:4021 (<1%) 7367:7387 (<1%)	view
16	x 2	neqo-transport/src neqo-transport/src	recv_stream.rs recv_stream.rs	1983:2005 (1%) 2039:2061 (1%)	view
16	x 2	fuzz/fuzz_targets fuzz/fuzz_targets	client_initial.rs server_initial.rs	1:19 (29%) 1:19 (28%)	view
16	x 2	neqo-qpack neqo-udp	Cargo.toml Cargo.toml	3:20 (53%) 3:20 (57%)	view
16	x 2	neqo-transport/src neqo-transport/src	recv_stream.rs recv_stream.rs	2168:2193 (1%) 2229:2254 (1%)	view
15	x 2	neqo-http3/src neqo-http3/src	connection_client.rs connection_client.rs	3744:3759 (<1%) 3860:3875 (<1%)	view
15	x 2	neqo-http3/src neqo-http3/src	connection_client.rs connection_client.rs	5805:5831 (<1%) 5837:5864 (<1%)	view
15	x 2	neqo-http3/src neqo-http3/src	connection_client.rs connection_client.rs	6861:6878 (<1%) 7415:7432 (<1%)	view
15	x 2	neqo-qpack/src neqo-qpack/src	encoder.rs encoder.rs	1102:1127 (1%) 1147:1171 (1%)	view
15	x 2	neqo-transport test-fixture	Cargo.toml Cargo.toml	3:19 (22%) 3:19 (48%)	view
15	x 2	neqo-qpack/src neqo-qpack/src	decoder_instructions.rs decoder_instructions.rs	218:234 (8%) 229:245 (8%)	view
15	x 2	neqo-http3/src neqo-http3/src	connection_client.rs connection_client.rs	7051:7068 (<1%) 7415:7432 (<1%)	view
15	x 2	neqo-http3/src neqo-http3/src	connection_client.rs connection_client.rs	2627:2642 (<1%) 3860:3875 (<1%)	view
15	x 2	neqo-http3/src neqo-http3/src	server.rs server.rs	958:975 (1%) 1035:1053 (1%)	view
15	x 2	neqo-common neqo-crypto	Cargo.toml Cargo.toml	3:19 (36%) 3:19 (40%)	view
15	x 2	neqo-http3/src neqo-http3/src	connection_client.rs connection_client.rs	6861:6878 (<1%) 7051:7068 (<1%)	view
14	x 2	neqo-transport neqo-udp	Cargo.toml Cargo.toml	3:18 (21%) 3:18 (50%)	view
14	x 2	neqo-qpack/src neqo-qpack/src	encoder.rs encoder.rs	1227:1250 (1%) 1309:1332 (1%)	view
14	x 2	neqo-qpack/src neqo-qpack/src	encoder.rs encoder.rs	1227:1250 (1%) 1267:1290 (1%)	view
14	x 2	neqo-common neqo-http3	Cargo.toml Cargo.toml	3:18 (34%) 3:18 (31%)	view
14	x 2	neqo-common neqo-transport	Cargo.toml Cargo.toml	3:18 (34%) 3:18 (21%)	view
14	x 2	neqo-common test-fixture	Cargo.toml Cargo.toml	3:18 (34%) 3:18 (45%)	view
14	x 2	neqo-http3 neqo-qpack	Cargo.toml Cargo.toml	3:18 (31%) 3:18 (46%)	view
14	x 2	neqo-http3/src neqo-http3/src	connection_client.rs connection_client.rs	3740:3755 (<1%) 3791:3806 (<1%)	view
14	x 2	neqo-common neqo-qpack	Cargo.toml Cargo.toml	3:18 (34%) 3:18 (46%)	view
14	x 2	neqo-crypto test-fixture	Cargo.toml Cargo.toml	3:18 (37%) 3:18 (45%)	view

Duplicated Units

The list of top 1 duplicated units.

See data for all 1 unit duplicate

Size	#	Folders	Files	Lines	Code
10	x 2	neqo-bin/src/client neqo-bin/src/server	mod.rs mod.rs	214:225 148:159	view