fix: udp handling and ipv4 and ipv6 filtering

demo/demo.tape

@@ -0,0 +1,99 @@
+# VHS tape file for snitch demo
+# run with: docker build -f demo/Dockerfile -t snitch-demo . && docker run -v $(pwd)/demo:/output snitch-demo
+
+Output demo.gif
+
+Set Shell "bash"
+Set FontSize 14
+Set FontFamily "DejaVu Sans Mono"
+Set Width 1400
+Set Height 700
+Set Theme "Catppuccin Frappe"
+Set Padding 15
+Set Framerate 24
+Set TypingSpeed 40ms
+
+# force color output
+Env TERM "xterm-256color"
+Env COLORTERM "truecolor"
+Env CLICOLOR "1"
+Env CLICOLOR_FORCE "1"
+Env FORCE_COLOR "1"
+
+# launch snitch
+Type "./snitch top"
+Enter
+Sleep 2s
+
+# navigate down through connections
+Down
+Sleep 400ms
+Down
+Sleep 400ms
+Down
+Sleep 400ms
+Down
+Sleep 400ms
+Down
+Sleep 1s
+
+# open detail view for selected connection
+Enter
+Sleep 2s
+
+# close detail view
+Escape
+Sleep 1s
+
+# search for nginx
+Type "/"
+Sleep 500ms
+Type "nginx"
+Sleep 1s
+Enter
+Sleep 2s
+
+# clear search
+Type "/"
+Sleep 300ms
+Escape
+Sleep 1s
+
+# filter: hide udp, show only tcp
+Type "u"
+Sleep 1.5s
+
+# show only listening connections
+Type "e"
+Sleep 1.5s
+Type "o"
+Sleep 1.5s
+
+# reset to show all
+Type "a"
+Sleep 1.5s
+
+# cycle through sort options
+Type "s"
+Sleep 1s
+Type "s"
+Sleep 1s
+Type "s"
+Sleep 1s
+
+# reverse sort order
+Type "S"
+Sleep 1.5s
+
+# show help screen
+Type "?"
+Sleep 3s
+
+# close help
+Escape
+Sleep 1s
+
+# quit
+Type "q"
+Sleep 300ms
+