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Lab 4 submission #1104

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2667a3e
docs: add PR template
G-Akleh Jun 9, 2026
781ab23
docs: upstream moved while you worked
G-Akleh Jun 9, 2026
dbe8a62
Merge branch 'main' of github.com:inno-devops-labs/DevOps-Intro
G-Akleh Jun 16, 2026
5645c93
docs(lab4): add OS and networking debugging documentation
G-Akleh Jun 16, 2026
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13 changes: 13 additions & 0 deletions .github/pull_request_template.md
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Original file line number Diff line number Diff line change
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## Goal
<!-- What does this PR accomplish? 1 sentence. -->

## Changes
-

## Testing
<!-- How did you verify it? -->

## Checklist
- [ ] Title is a clear sentence (≤ 70 chars)
- [ ] Commits are signed (`git log --show-signature`)
- [ ] `submissions/labN.md` updated
Binary file added lab4-trace.pcap
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43 changes: 43 additions & 0 deletions lab4-trace.txt
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23:56:10.219563 IP6 ::1.46764 > ::1.8080: Flags [S], seq 2060989463, win 65476, options [mss 65476,sackOK,TS val 1474851703 ecr 0,nop,wscale 7], length 0
`.g7.(.@....................................z.4..........0.........
W.sw........
23:56:10.219591 IP6 ::1.8080 > ::1.46764: Flags [S.], seq 695416862, ack 2060989464, win 65464, options [mss 65476,sackOK,TS val 1474851703 ecr 1474851703,nop,wscale 7], length 0
`..^.(.@....................................)s8.z.4......0.........
W.swW.sw....
23:56:10.219608 IP6 ::1.46764 > ::1.8080: Flags [.], ack 1, win 512, options [nop,nop,TS val 1474851703 ecr 1474851703], length 0
`.g7. .@....................................z.4.)s8......(.....
W.swW.sw
23:56:10.219675 IP6 ::1.46764 > ::1.8080: Flags [P.], seq 1:175, ack 1, win 512, options [nop,nop,TS val 1474851703 ecr 1474851703], length 174: HTTP: POST /notes HTTP/1.1
`.g7...@....................................z.4.)s8............
W.swW.swPOST /notes HTTP/1.1
Host: localhost:8080
User-Agent: curl/8.5.0
Accept: */*
Content-Type: application/json
Content-Length: 39

{"title":"trace me","body":"in flight"}
23:56:10.219678 IP6 ::1.8080 > ::1.46764: Flags [.], ack 175, win 511, options [nop,nop,TS val 1474851703 ecr 1474851703], length 0
`..^. .@....................................)s8.z.4......(.....
W.swW.sw
23:56:10.225582 IP6 ::1.8080 > ::1.46764: Flags [P.], seq 1:207, ack 175, win 512, options [nop,nop,TS val 1474851709 ecr 1474851703], length 206: HTTP: HTTP/1.1 201 Created
`..^...@....................................)s8.z.4............
W.s}W.swHTTP/1.1 201 Created
Content-Type: application/json
Date: Tue, 16 Jun 2026 20:56:10 GMT
Content-Length: 93

{"id":13,"title":"trace me","body":"in flight","created_at":"2026-06-16T20:56:10.22009407Z"}

23:56:10.225606 IP6 ::1.46764 > ::1.8080: Flags [.], ack 207, win 511, options [nop,nop,TS val 1474851709 ecr 1474851709], length 0
`.g7. .@....................................z.4.)s8......(.....
W.s}W.s}
23:56:10.225771 IP6 ::1.46764 > ::1.8080: Flags [F.], seq 175, ack 207, win 512, options [nop,nop,TS val 1474851709 ecr 1474851709], length 0
`.g7. .@....................................z.4.)s8......(.....
W.s}W.s}
23:56:10.225826 IP6 ::1.8080 > ::1.46764: Flags [F.], seq 207, ack 176, win 512, options [nop,nop,TS val 1474851709 ecr 1474851709], length 0
`..^. .@....................................)s8.z.4......(.....
W.s}W.s}
23:56:10.225840 IP6 ::1.46764 > ::1.8080: Flags [.], ack 208, win 512, options [nop,nop,TS val 1474851709 ecr 1474851709], length 0
`.g7. .@....................................z.4.)s8......(.....
W.s}W.s}
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