Add missing file commit (protocols/dat.js)

Author: pfrazee

app/bg/protocols/dat.js

@@ -0,0 +1,31 @@
+/**
+ * HACK
+ * Electron has an issue that's causing file read streams to fail to serve
+ * Reading into memory seems to resolve the issue
+ * https://github.com/electron/electron/issues/21018
+ * -prf
+ */
+import { PassThrough } from 'stream'
+function intoStream (text) {
+  const rv = new PassThrough()
+  rv.push(text)
+  rv.push(null)
+  return rv
+}
+
+// exported api
+// =
+
+export function register (protocol) {
+  protocol.registerStreamProtocol('dat', electronHandler)
+}
+
+export const electronHandler = async function (request, respond) {
+  respond({
+    statusCode: 200,
+    headers: {
+      Location: request.replace('dat:', 'hd:')
+    },
+    data: intoStream(`Redirecting...`)
+  })
+}