aws / s2n-quic - 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

16% duplication:

118,359 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
19,837 duplicated lines

4,326 duplicates

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

Duplication per Extension

Duplication per Component (primary)

Duplication Between Components (50+ lines)

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From Component --> To Component	Duplicated Lines	File Pairs	Details
dc (<1%) --> quic (<1%)	156	14 file pairs	details...
quic (<1%) --> tools (2%)	114	10 file pairs	details...
common (2%) --> quic (<1%)	100	8 file pairs	details...

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Longest Duplicates

The list of 50 longest duplicates.

See data for all 4,326 duplicates...

Size	#	Folders	Files	Lines	Code
76	x 2	quic/s2n-quic-core/src/recovery quic/s2n-quic-core/src/recovery	hybrid_slow_start.rs hybrid_slow_start.rs	262:382 (20%) 394:514 (20%)	view
68	x 2	quic/s2n-quic-transport/src/space quic/s2n-quic-transport/src/space	handshake.rs initial.rs	154:231 (13%) 203:280 (11%)	view
67	x 2	quic/s2n-quic-crypto/src quic/s2n-quic-crypto/src	tests.rs tests.rs	59:125 (23%) 128:194 (23%)	view
57	x 2	quic/s2n-quic-transport/src/space quic/s2n-quic-transport/src/space	handshake.rs initial.rs	416:504 (11%) 540:628 (9%)	view
53	x 2	dc/s2n-quic-dc/src/sync dc/s2n-quic-dc/src/sync	mpmc.rs mpsc.rs	327:397 (20%) 215:285 (29%)	view
51	x 2	quic/s2n-quic-transport/src/stream/receive_stream quic/s2n-quic-transport/src/stream/receive_stream	tests.rs tests.rs	1259:1319 (2%) 1576:1636 (2%)	view
47	x 2	quic/s2n-quic-transport/src/space quic/s2n-quic-transport/src/space	handshake.rs initial.rs	560:617 (9%) 698:755 (8%)	view
43	x 2	dc/s2n-quic-dc/src/stream/environment/bach dc/s2n-quic-dc/src/stream/environment/tokio	pool.rs pool.rs	100:153 (35%) 106:160 (23%)	view
41	x 2	dc/s2n-quic-dc/src/stream/recv dc/s2n-quic-dc/src/stream/send	error.rs error.rs	13:73 (30%) 8:68 (38%)	view
41	x 2	quic/s2n-quic-transport/src/space quic/s2n-quic-transport/src/space	handshake.rs initial.rs	237:283 (8%) 287:333 (7%)	view
40	x 2	dc/s2n-quic-dc-benches/src/datagram dc/s2n-quic-dc-benches/src/datagram	recv.rs send.rs	111:155 (32%) 85:127 (41%)	view
36	x 2	dc/s2n-quic-dc/src/stream/environment dc/s2n-quic-dc/src/stream/environment	bach.rs tokio.rs	119:176 (26%) 157:214 (20%)	view
35	x 2	quic/s2n-quic-transport/src/recovery/manager quic/s2n-quic-transport/src/recovery/manager	tests.rs tests.rs	682:719 (1%) 891:928 (1%)	view
34	x 2	quic/s2n-quic-transport/src/space quic/s2n-quic-transport/src/space	handshake.rs initial.rs	77:115 (6%) 125:163 (5%)	view
34	x 2	quic/s2n-quic-transport/src/recovery/manager quic/s2n-quic-transport/src/recovery/manager	tests.rs tests.rs	2535:2583 (1%) 2624:2671 (1%)	view
34	x 2	quic/s2n-quic-transport/src/space quic/s2n-quic-transport/src/space	application.rs handshake.rs	352:390 (4%) 194:231 (6%)	view
34	x 2	quic/s2n-quic-transport/src/space quic/s2n-quic-transport/src/space	application.rs initial.rs	352:390 (4%) 243:280 (5%)	view
33	x 2	quic/s2n-quic-transport/src/recovery/manager quic/s2n-quic-transport/src/recovery/manager	tests.rs tests.rs	2218:2256 (1%) 2381:2419 (1%)	view
32	x 2	quic/s2n-quic-transport/src/stream/receive_stream quic/s2n-quic-transport/src/stream/receive_stream	tests.rs tests.rs	727:761 (1%) 1270:1304 (1%)	view
32	x 2	quic/s2n-quic-transport/src/recovery/manager quic/s2n-quic-transport/src/recovery/manager	tests.rs tests.rs	2529:2567 (1%) 2703:2740 (1%)	view
32	x 2	quic/s2n-quic-transport/src/recovery/manager quic/s2n-quic-transport/src/recovery/manager	tests.rs tests.rs	795:829 (1%) 894:928 (1%)	view
32	x 2	quic/s2n-quic-transport/src/recovery/manager quic/s2n-quic-transport/src/recovery/manager	tests.rs tests.rs	685:719 (1%) 795:829 (1%)	view
32	x 2	quic/s2n-quic-transport/src/space quic/s2n-quic-transport/src/space	application.rs initial.rs	722:772 (4%) 556:606 (5%)	view
32	x 2	quic/s2n-quic-transport/src/stream/receive_stream quic/s2n-quic-transport/src/stream/receive_stream	tests.rs tests.rs	727:761 (1%) 1587:1621 (1%)	view
32	x 2	quic/s2n-quic-transport/src/recovery/manager quic/s2n-quic-transport/src/recovery/manager	tests.rs tests.rs	1301:1335 (1%) 1394:1427 (1%)	view
32	x 2	quic/s2n-quic-transport/src/space quic/s2n-quic-transport/src/space	application.rs handshake.rs	722:772 (4%) 432:482 (6%)	view
31	x 2	quic/s2n-quic-transport/src/stream/receive_stream quic/s2n-quic-transport/src/stream/receive_stream	tests.rs tests.rs	88:122 (1%) 165:199 (1%)	view
30	x 2	quic/s2n-quic-transport/src/path/manager quic/s2n-quic-transport/src/path/manager	tests.rs tests.rs	1222:1254 (2%) 1303:1334 (2%)	view
29	x 2	quic/s2n-quic-transport/src/space quic/s2n-quic-transport/src/space	handshake.rs initial.rs	314:348 (5%) 350:384 (4%)	view
28	x 2	quic/s2n-quic-transport/src/recovery/manager quic/s2n-quic-transport/src/recovery/manager	tests.rs tests.rs	2624:2655 (1%) 2709:2740 (1%)	view
28	x 2	quic/s2n-quic-crypto/src quic/s2n-quic-crypto/src	initial.rs negotiated.rs	83:120 (15%) 54:91 (22%)	view
28	x 2	quic/s2n-quic-transport/src/space quic/s2n-quic-transport/src/space	handshake.rs initial.rs	117:148 (5%) 165:196 (4%)	view
27	x 2	quic/s2n-quic-transport/src/stream/receive_stream quic/s2n-quic-transport/src/stream/receive_stream	tests.rs tests.rs	88:118 (1%) 224:254 (1%)	view
27	x 2	quic/s2n-quic-transport/src/stream/receive_stream quic/s2n-quic-transport/src/stream/receive_stream	tests.rs tests.rs	165:195 (1%) 224:254 (1%)	view
27	x 2	quic/s2n-quic-transport/src/stream/send_stream quic/s2n-quic-transport/src/stream/send_stream	tests.rs tests.rs	1622:1651 (1%) 1715:1744 (1%)	view
27	x 2	quic/s2n-quic-transport/src/stream/receive_stream quic/s2n-quic-transport/src/stream/receive_stream	tests.rs tests.rs	2378:2406 (1%) 2429:2457 (1%)	view
26	x 2	quic/s2n-quic-transport/src/space quic/s2n-quic-transport/src/space	application.rs initial.rs	879:906 (3%) 700:727 (4%)	view
26	x 2	quic/s2n-quic-transport/src/stream/receive_stream quic/s2n-quic-transport/src/stream/receive_stream	tests.rs tests.rs	624:661 (1%) 668:705 (1%)	view
26	x 2	quic/s2n-quic-transport/src/space quic/s2n-quic-transport/src/space	application.rs handshake.rs	879:906 (3%) 562:589 (5%)	view
26	x 2	quic/s2n-quic-transport/src/recovery/manager quic/s2n-quic-transport/src/recovery/manager	tests.rs tests.rs	2372:2402 (<1%) 2507:2537 (<1%)	view
26	x 2	dc/s2n-quic-dc/src/stream/environment/bach dc/s2n-quic-dc/src/stream/environment/tokio	udp.rs udp.rs	21:53 (63%) 122:154 (22%)	view
25	x 2	quic/s2n-quic-transport/src/space quic/s2n-quic-transport/src/space	application.rs handshake.rs	130:158 (3%) 77:105 (5%)	view
25	x 2	quic/s2n-quic-transport/src/space quic/s2n-quic-transport/src/space	application.rs initial.rs	130:158 (3%) 125:153 (4%)	view
25	x 2	quic/s2n-quic-events/src quic/s2n-quic-events/src	output.rs output.rs	480:514 (5%) 540:574 (5%)	view
25	x 2	quic/s2n-quic-transport/src/recovery/manager quic/s2n-quic-transport/src/recovery/manager	tests.rs tests.rs	1134:1164 (<1%) 1236:1266 (<1%)	view
25	x 2	quic/s2n-quic-crypto/src quic/s2n-quic-crypto/src	tests.rs tests.rs	32:56 (8%) 128:152 (8%)	view
25	x 2	quic/s2n-quic-platform/src/bpf quic/s2n-quic-platform/src/bpf	cbpf.rs ebpf.rs	63:92 (20%) 58:87 (23%)	view
25	x 2	quic/s2n-quic-crypto/src quic/s2n-quic-crypto/src	tests.rs tests.rs	32:56 (8%) 59:83 (8%)	view
24	x 2	dc/s2n-quic-dc-benches/src/datagram dc/s2n-quic-dc-benches/src/datagram	recv.rs send.rs	81:107 (19%) 55:81 (25%)	view
24	x 2	quic/s2n-quic-h3/src quic/s2n-quic-h3/src	s2n_quic.rs s2n_quic.rs	113:142 (7%) 153:182 (7%)	view

Duplicated Units

The list of top 24 duplicated units.

See data for all 24 unit duplicates...

Size	#	Folders	Files	Lines	Code
22	x 2	dc/s2n-quic-dc/src/sync dc/s2n-quic-dc/src/sync	mpmc.rs mpsc.rs	334:359 222:247	view
21	x 2	dc/s2n-quic-dc/src/sync dc/s2n-quic-dc/src/sync	mpmc.rs mpsc.rs	362:386 250:274	view
21	x 2	quic/s2n-quic-transport/src/space quic/s2n-quic-transport/src/space	initial.rs handshake.rs	710:738 572:600	view
20	x 2	quic/s2n-quic-transport/src/space quic/s2n-quic-transport/src/space	initial.rs handshake.rs	364:385 328:349	view
20	x 2	quic/s2n-quic-platform/src/socket/task quic/s2n-quic-platform/src/socket/task	tx.rs rx.rs	64:90 55:81	view
15	x 2	dc/s2n-quic-dc/src/stream/environment/tokio dc/s2n-quic-dc/src/stream/environment/bach	udp.rs udp.rs	138:155 37:54	view
15	x 2	quic/s2n-quic-transport/src/space quic/s2n-quic-transport/src/space	initial.rs handshake.rs	740:756 602:618	view
14	x 2	quic/s2n-quic-transport/src/space quic/s2n-quic-transport/src/space	application.rs initial.rs	825:846 643:664	view
11	x 4	quic/s2n-quic-core/src/inet quic/s2n-quic-core/src/inet quic/s2n-quic-core/src/inet quic/s2n-quic-core/src/inet	ethernet.rs ipv4.rs udp.rs ipv6.rs	185:198 809:822 99:112 718:731	view
10	x 3	dc/s2n-quic-dc/src/stream dc/s2n-quic-dc/src/stream/send dc/s2n-quic-dc/src/stream/recv	application.rs application.rs application.rs	118:131 58:71 62:75	view
10	x 3	quic/s2n-quic-transport/src/space quic/s2n-quic-transport/src/space quic/s2n-quic-transport/src/space	application.rs initial.rs handshake.rs	757:768 591:602 467:478	view
8	x 2	quic/s2n-quic-tls/src quic/s2n-quic-tls/src	client.rs server.rs	72:83 82:93	view
7	x 2	quic/s2n-quic-transport/src/space quic/s2n-quic-transport/src/space	initial.rs handshake.rs	528:536 404:412	view
7	x 2	quic/s2n-quic-core/src/crypto quic/s2n-quic-core/src/crypto/tls	key.rs null.rs	90:99 340:349	view
7	x 2	quic/s2n-quic-platform/src/syscall quic/s2n-quic-platform/src/syscall	mmsg.rs msg.rs	21:29 21:29	view
6	x 2	dc/s2n-quic-dc/src/stream/send dc/s2n-quic-dc/src/stream/recv	error.rs error.rs	15:22 20:27	view
6	x 2	quic/s2n-quic-transport/src/connection quic/s2n-quic-transport/src/connection	peer_id_registry.rs local_id_registry.rs	674:681 735:742	view
6	x 2	quic/s2n-quic-transport/src/space quic/s2n-quic-transport/src/space	initial.rs handshake.rs	56:63 49:56	view
6	x 2	quic/s2n-quic-transport/src/space quic/s2n-quic-transport/src/space	initial.rs handshake.rs	617:624 493:500	view
6	x 3	quic/s2n-quic-crypto/src quic/s2n-quic-crypto/src quic/s2n-quic-rustls/src	negotiated.rs initial.rs cipher_suite.rs	55:62 84:91 136:143	view
6	x 3	quic/s2n-quic-crypto/src quic/s2n-quic-crypto/src quic/s2n-quic-rustls/src	negotiated.rs initial.rs cipher_suite.rs	65:72 94:101 146:153	view
6	x 2	quic/s2n-quic-crypto/src quic/s2n-quic-crypto/src	negotiated.rs zero_rtt.rs	142:149 23:30	view
6	x 2	quic/s2n-quic-platform/src/io/testing quic/s2n-quic-platform/src/message	message.rs simple.rs	162:169 152:159	view
6	x 2	quic/s2n-quic-platform/src/syscall quic/s2n-quic-platform/src/syscall	mmsg.rs msg.rs	11:18 11:18	view