forward headers from server component and make trust_proxy config a number

src/lib/api/cookies.ts

@@ -1,4 +1,4 @@
-import { cookies } from "next/headers";
+import { cookies, headers } from "next/headers";
 import { pullEnv } from "../pullEnv";
 
 export async function authCookieHeader() {
@@ -7,9 +7,16 @@ export async function authCookieHeader() {
     const allCookies = await cookies();
     const cookieName = env.server.sessionCookieName;
     const sessionId = allCookies.get(cookieName)?.value ?? null;
+
+    // all other headers
+    // this is needed to pass through x-forwarded-for, x-forwarded-proto, etc.
+    const otherHeaders = await headers();
+    const otherHeadersObject = Object.fromEntries(otherHeaders.entries());
+
     return {
         headers: {
             Cookie: `${cookieName}=${sessionId}`,
+            ...otherHeadersObject
         },
     };
 }