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docs(lab4): complete network debugging #4

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85 changes: 85 additions & 0 deletions cert-chain.txt
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Original file line number Diff line number Diff line change
@@ -0,0 +1,85 @@
CONNECTED(00000003)
---
Certificate chain
0 s:
i:CN = Caddy Local Authority - ECC Intermediate
a:PKEY: id-ecPublicKey, 256 (bit); sigalg: ecdsa-with-SHA256
v:NotBefore: Jun 16 18:45:09 2026 GMT; NotAfter: Jun 17 06:45:09 2026 GMT
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
1 s:CN = Caddy Local Authority - ECC Intermediate
i:CN = Caddy Local Authority - 2026 ECC Root
a:PKEY: id-ecPublicKey, 256 (bit); sigalg: ecdsa-with-SHA256
v:NotBefore: Jun 16 18:45:09 2026 GMT; NotAfter: Jun 23 18:45:09 2026 GMT
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
---
Server certificate
subject=
issuer=CN = Caddy Local Authority - ECC Intermediate
---
No client certificate CA names sent
Peer signing digest: SHA256
Peer signature type: ECDSA
Server Temp Key: X25519, 253 bits
---
SSL handshake has read 1271 bytes and written 375 bytes
Verification error: unable to get local issuer certificate
---
New, TLSv1.3, Cipher is TLS_AES_128_GCM_SHA256
Server public key is 256 bit
Secure Renegotiation IS NOT supported
Compression: NONE
Expansion: NONE
No ALPN negotiated
Early data was not sent
Verify return code: 20 (unable to get local issuer certificate)
---
---
Post-Handshake New Session Ticket arrived:
SSL-Session:
Protocol : TLSv1.3
Cipher : TLS_AES_128_GCM_SHA256
Session-ID: 2CB0DA995EB4E89B81B007E7AFFFC21661CD6B8CFF82665C616B5DB5432E328D
Session-ID-ctx:
Resumption PSK: FDFC38567D0E7BF6B6A7D4547316668C851E32F4139B76884394E74354AA7F8C
PSK identity: None
PSK identity hint: None
SRP username: None
TLS session ticket lifetime hint: 604800 (seconds)
TLS session ticket:
0000 - ce 22 de 78 0d 8f b0 8d-41 53 47 7d 24 c1 5e 8a .".x....ASG}$.^.
0010 - c8 7f 8a c7 c9 81 98 73-d5 c4 6e ac a0 da b6 f2 .......s..n.....
0020 - d7 ec ca 6c 5a b8 2a e4-a4 fe d3 d3 a3 b8 58 ae ...lZ.*.......X.
0030 - e4 0a ca b0 de 9d df d1-09 fe 29 85 c0 72 e6 50 ..........)..r.P
0040 - f7 5f 38 53 15 7e 1a fc-4c bd 4c e2 9a d1 ed e1 ._8S.~..L.L.....
0050 - 73 f5 f7 6b 0e aa 40 02-cb 0a cd 6d ad 9f fb 76 s..k..@....m...v
0060 - ad 84 d3 52 69 00 ff 74-18 ...Ri..t.

Start Time: 1781636491
Timeout : 7200 (sec)
Verify return code: 20 (unable to get local issuer certificate)
Extended master secret: no
Max Early Data: 0
---
read R BLOCK
Binary file added lab4-tls.pcap
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43 changes: 43 additions & 0 deletions lab4-trace.txt
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@@ -0,0 +1,43 @@
20:14:38.597650 IP 127.0.0.1.51824 > 127.0.0.1.8080: Flags [S], seq 3335370418, win 65495, options [mss 65495,sackOK,TS val 1766035711 ecr 0,nop,wscale 7], length 0
E..<P8@.@............p...............0.........
iC..........
20:14:38.597701 IP 127.0.0.1.8080 > 127.0.0.1.51824: Flags [S.], seq 535201973, ack 3335370419, win 65483, options [mss 65495,sackOK,TS val 1766035711 ecr 1766035711,nop,wscale 7], length 0
E..<..@.@.<............p.............0.........
iC..iC......
20:14:38.597752 IP 127.0.0.1.51824 > 127.0.0.1.8080: Flags [.], ack 1, win 512, options [nop,nop,TS val 1766035711 ecr 1766035711], length 0
E..4P9@.@............p...............(.....
iC..iC..
20:14:38.597956 IP 127.0.0.1.51824 > 127.0.0.1.8080: Flags [P.], seq 1:175, ack 1, win 512, options [nop,nop,TS val 1766035711 ecr 1766035711], length 174: HTTP: POST /notes HTTP/1.1
E...P:@.@............p.....................
iC..iC..POST /notes HTTP/1.1
Host: 127.0.0.1:8080
User-Agent: curl/8.5.0
Accept: */*
Content-Type: application/json
Content-Length: 39

{"title":"trace me","body":"in flight"}
20:14:38.597960 IP 127.0.0.1.8080 > 127.0.0.1.51824: Flags [.], ack 175, win 511, options [nop,nop,TS val 1766035711 ecr 1766035711], length 0
E..4..@.@..............p.......a.....(.....
iC..iC..
20:14:38.616063 IP 127.0.0.1.8080 > 127.0.0.1.51824: Flags [P.], seq 1:207, ack 175, win 512, options [nop,nop,TS val 1766035729 ecr 1766035711], length 206: HTTP: HTTP/1.1 201 Created
E.....@.@..<...........p.......a...........
iC..iC..HTTP/1.1 201 Created
Content-Type: application/json
Date: Tue, 16 Jun 2026 17:14:38 GMT
Content-Length: 93

{"id":7,"title":"trace me","body":"in flight","created_at":"2026-06-16T17:14:38.598761313Z"}

20:14:38.616127 IP 127.0.0.1.51824 > 127.0.0.1.8080: Flags [.], ack 207, win 511, options [nop,nop,TS val 1766035729 ecr 1766035729], length 0
E..4P;@.@............p.....a.........(.....
iC..iC..
20:14:38.616587 IP 127.0.0.1.51824 > 127.0.0.1.8080: Flags [F.], seq 175, ack 207, win 512, options [nop,nop,TS val 1766035730 ecr 1766035729], length 0
E..4P<@.@............p.....a.........(.....
iC..iC..
20:14:38.616709 IP 127.0.0.1.8080 > 127.0.0.1.51824: Flags [F.], seq 207, ack 176, win 512, options [nop,nop,TS val 1766035730 ecr 1766035730], length 0
E..4..@.@.. ...........p.......b.....(.....
iC..iC..
20:14:38.616742 IP 127.0.0.1.51824 > 127.0.0.1.8080: Flags [.], ack 208, win 512, options [nop,nop,TS val 1766035730 ecr 1766035730], length 0
E..4P=@.@............p.....b.........(.....
iC..iC..
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