improved nextjs/remix adapters and docs, confirmed remix ssr working

app/src/adapter/index.ts

@@ -1,3 +1,4 @@
+import type { IncomingMessage } from "node:http";
 import type { App, CreateAppConfig } from "bknd";
 
 export type CfBkndModeCache<Env = any> = (env: Env) => {
@@ -35,3 +36,27 @@ export type BkndConfigJson = {
       port?: number;
    };
 };
+
+export function nodeRequestToRequest(req: IncomingMessage): Request {
+   let protocol = "http";
+   try {
+      protocol = req.headers["x-forwarded-proto"] as string;
+   } catch (e) {}
+   const host = req.headers.host;
+   const url = `${protocol}://${host}${req.url}`;
+   const headers = new Headers();
+
+   for (const [key, value] of Object.entries(req.headers)) {
+      if (Array.isArray(value)) {
+         headers.append(key, value.join(", "));
+      } else if (value) {
+         headers.append(key, value);
+      }
+   }
+
+   const method = req.method || "GET";
+   return new Request(url, {
+      method,
+      headers
+   });
+}