Complete Lab 4 submission

Caddyfile

@@ -0,0 +1,4 @@
+localhost:8443 {
+    tls internal
+    reverse_proxy localhost:8080
+}

lab4-trace.txt

@@ -0,0 +1,49 @@
+13:46:07.658418 IP 127.0.0.1.50656 > 127.0.0.1.8080: Flags [S], seq 1938324802, win 65535, options [mss 16344,nop,wscale 6,nop,nop,TS val 3607625365 ecr 0,sackOK,eol], length 0
+E..@..@.@...............s.}B.........4....?........
+............
+13:46:07.658484 IP 127.0.0.1.8080 > 127.0.0.1.50656: Flags [S.], seq 3003311224, ack 1938324803, win 65535, options [mss 16344,nop,wscale 6,nop,nop,TS val 581001549 ecr 3607625365,sackOK,eol], length 0
+E..@..@.@..................xs.}C.....4....?........
+".aM........
+13:46:07.658497 IP 127.0.0.1.50656 > 127.0.0.1.8080: Flags [.], ack 1, win 6380, options [nop,nop,TS val 3607625365 ecr 581001549], length 0
+E..4..@.@...............s.}C...y.....(.....
+....".aM
+13:46:07.658505 IP 127.0.0.1.8080 > 127.0.0.1.50656: Flags [.], ack 1, win 6380, options [nop,nop,TS val 581001549 ecr 3607625365], length 0
+E..4..@.@..................ys.}C.....(.....
+".aM....
+13:46:07.658525 IP 127.0.0.1.50656 > 127.0.0.1.8080: Flags [P.], seq 1:175, ack 1, win 6380, options [nop,nop,TS val 3607625365 ecr 581001549], length 174: HTTP: POST /notes HTTP/1.1
+E.....@.@...............s.}C...y...........
+....".aMPOST /notes HTTP/1.1
+Host: 127.0.0.1:8080
+User-Agent: curl/8.7.1
+Accept: */*
+Content-Type: application/json
+Content-Length: 39
+
+{"title":"lab4","body":"network trace"}
+13:46:07.658540 IP 127.0.0.1.8080 > 127.0.0.1.50656: Flags [.], ack 175, win 6378, options [nop,nop,TS val 581001549 ecr 3607625365], length 0
+E..4..@.@..................ys.}......(.....
+".aM....
+13:46:07.659162 IP 127.0.0.1.8080 > 127.0.0.1.50656: Flags [P.], seq 1:204, ack 175, win 6378, options [nop,nop,TS val 581001550 ecr 3607625365], length 203: HTTP: HTTP/1.1 201 Created
+E.....@.@..................ys.}............
+".aN....HTTP/1.1 201 Created
+Content-Type: application/json
+Date: Sat, 12 Sep 2026 10:46:07 GMT
+Content-Length: 90
+
+{"id":6,"title":"lab4","body":"network trace","created_at":"2026-09-12T10:46:07.658749Z"}
+
+13:46:07.659178 IP 127.0.0.1.50656 > 127.0.0.1.8080: Flags [.], ack 204, win 6377, options [nop,nop,TS val 3607625366 ecr 581001550], length 0
+E..4..@.@...............s.}....D.....(.....
+....".aN
+13:46:07.659228 IP 127.0.0.1.50656 > 127.0.0.1.8080: Flags [F.], seq 175, ack 204, win 6377, options [nop,nop,TS val 3607625366 ecr 581001550], length 0
+E..4..@.@...............s.}....D.....(.....
+....".aN
+13:46:07.659241 IP 127.0.0.1.8080 > 127.0.0.1.50656: Flags [.], ack 176, win 6378, options [nop,nop,TS val 581001550 ecr 3607625366], length 0
+E..4..@.@..................Ds.}......(.....
+".aN....
+13:46:07.659253 IP 127.0.0.1.8080 > 127.0.0.1.50656: Flags [F.], seq 204, ack 176, win 6378, options [nop,nop,TS val 581001550 ecr 3607625366], length 0
+E..4..@.@..................Ds.}......(.....
+".aN....
+13:46:07.659270 IP 127.0.0.1.50656 > 127.0.0.1.8080: Flags [.], ack 205, win 6377, options [nop,nop,TS val 3607625366 ecr 581001550], length 0
+E..4..@.@...............s.}....E.....(.....
+....".aN