From 24596022f9792da22c3e70e8ff76be6b4b4aca08 Mon Sep 17 00:00:00 2001
From: Tyler Goodlet <jgbt@protonmail.com>
Date: Wed, 27 Oct 2021 11:54:32 -0400
Subject: [PATCH] Wait for a last price tick before delivering quote

---
 piker/brokers/ib.py | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/piker/brokers/ib.py b/piker/brokers/ib.py
index e2cea505..248039d4 100644
--- a/piker/brokers/ib.py
+++ b/piker/brokers/ib.py
@@ -26,6 +26,7 @@ from dataclasses import asdict
 from datetime import datetime
 from functools import partial
 import itertools
+from math import isnan
 from typing import (
     Any, Optional,
     AsyncIterator, Awaitable,
@@ -502,7 +503,11 @@ class Client:
             contract,
             snapshot=True,
         )
-        ticker = await ticker.updateEvent
+
+        # ensure a last price gets filled in before we deliver quote
+        while isnan(ticker.last):
+            ticker = await ticker.updateEvent
+
         details = (await details_fute)[0]
         return contract, ticker, details