fix local cert updates

.gitignore

@@ -3,4 +3,7 @@ node_modules
 
 site_bin
 .task
-*_templ.go
+*_templ.go
+
+*.crt
+*.key

Taskfile.yml

@@ -16,6 +16,13 @@ tasks:
       - go install github.com/a-h/templ/cmd/templ@latest
       - go install github.com/go-task/task/v3/cmd/task@latest
 
+  localcert:
+    cmds:
+      - sudo apt install ca-certificates
+      - openssl req -x509 -out localhost.crt -keyout localhost.key -newkey rsa:2048 -nodes -sha256 -subj '/CN=localhost' -extensions EXT -config <( printf "[dn]\nCN=localhost\n[req]\ndistinguished_name = dn\n[EXT]\nsubjectAltName=DNS:localhost\nkeyUsage=digitalSignature\nextendedKeyUsage=serverAuth")
+      - sudo cp localhost.crt /usr/local/share/ca-certificates
+      - sudo update-ca-certificates
+
   version:
     cmds:
       - echo {{.VERSION}}

library/src/lib/plugins/webtransport.ts

@@ -0,0 +1,57 @@
+import { AttributeContext, AttributePlugin } from '../types'
+
+// Sets the value of the element
+export const WebTransportPlugin: AttributePlugin = {
+  prefix: 'transport',
+  mustHaveEmptyKey: true,
+  mustNotEmptyExpression: true,
+  allowedModifiers: new Set(['throughput', 'latency', 'pooled', 'unreliable']),
+
+  onLoad: (ctx: AttributeContext) => {
+    let wt: WebTransport | null = null
+
+    const fn = async () => {
+      const { expressionFn } = ctx
+      const url = expressionFn(ctx)
+
+      const opts: WebTransportOptions = {
+        congestionControl: 'default',
+        allowPooling: false,
+        requireUnreliable: false,
+      }
+      if (ctx.modifiers.has('pooled')) {
+        opts.allowPooling = true
+      }
+      if (ctx.modifiers.has('unreliable')) {
+        opts.requireUnreliable = true
+      }
+      if (ctx.modifiers.has('throughput')) {
+        opts.congestionControl = 'throughput'
+      }
+      if (ctx.modifiers.has('latency')) {
+        opts.congestionControl = 'low-latency'
+      }
+
+      wt = new WebTransport(url, opts)
+      await wt.ready
+
+      const { readable, writable } = await wt.createBidirectionalStream()
+      const reader = readable.getReader()
+      const writer = writable.getWriter()
+
+      // this needs obvious work to be useful
+      writer.write(new TextEncoder().encode('Hello, World!'))
+      reader.read().then((result) => {
+        console.log('Received:', new TextDecoder().decode(result.value!))
+      })
+    }
+
+    fn()
+
+    return () => {
+      if (wt) {
+        wt.close()
+      }
+    }
+  },
+}