fix lnurlwallet flow.

lnbits/core/services.py

@@ -1,3 +1,4 @@
+import trio  # type: ignore
 import json
 import httpx
 from io import BytesIO
@@ -182,6 +183,7 @@ async def redeem_lnurl_withdraw(
     lnurl_request: str,
     memo: Optional[str] = None,
     extra: Optional[Dict] = None,
+    wait_seconds: int = 0,
     conn: Optional[Connection] = None,
 ) -> None:
     res = {}
@@ -199,19 +201,28 @@ async def redeem_lnurl_withdraw(
         conn=conn,
     )
 
-    async with httpx.AsyncClient() as client:
-        await client.get(
-            res["callback"],
+    if wait_seconds:
+        await trio.sleep(wait_seconds)
+
     params = {
         "k1": res["k1"],
         "pr": payment_request,
-                "balanceNotify": url_for(
+    }
+
+    try:
+        params["balanceNotify"] = url_for(
             "core.lnurl_balance_notify",
             service=urlparse(lnurl_request).netloc,
             wal=wallet_id,
             _external=True,
-                ),
-            },
+        )
+    except Exception:
+        pass
+
+    async with httpx.AsyncClient() as client:
+        await client.get(
+            res["callback"],
+            params=params,
         )
 
 

lnbits/core/views/generic.py

@@ -1,4 +1,3 @@
-import trio  # type: ignore
 from os import path
 from http import HTTPStatus
 from quart import (
@@ -203,8 +202,9 @@ async def lnurlwallet():
         wallet.id,
         request.args.get("lightning"),
         "LNbits initial funding: voucher redeem.",
+        {"tag": "lnurlwallet"},
+        5,  # wait 5 seconds before sending the invoice to the service
     )
-    await trio.sleep(3)
 
     return redirect(url_for("core.wallet", usr=user.id, wal=wallet.id))