From db6c955905a3065d19e3957af5c3ad52043aa12e Mon Sep 17 00:00:00 2001
From: George Pollard <gpollard@microsoft.com>
Date: Thu, 1 Sep 2022 20:24:53 +0000
Subject: [PATCH] Allow extra properties iff they are null

---
 src/ApiService/ApiService/onefuzzlib/Request.cs | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/ApiService/ApiService/onefuzzlib/Request.cs b/src/ApiService/ApiService/onefuzzlib/Request.cs
index a250a7f5945..39deafb1069 100644
--- a/src/ApiService/ApiService/onefuzzlib/Request.cs
+++ b/src/ApiService/ApiService/onefuzzlib/Request.cs
@@ -42,8 +42,12 @@ public static async Async.Task<OneFuzzResult<T>> ParseRequest<T>(HttpRequestData
                 // properties set:
                 if (t.ExtensionData != null) {
                     var errors = new List<string>();
-                    foreach (var property in t.ExtensionData.Keys) {
-                        errors.Add($"Unexpected property: \"{property}\"");
+                    foreach (var (name, value) in t.ExtensionData) {
+                        // allow additional properties if they are null,
+                        // otherwise produce an error
+                        if (value.ValueKind != JsonValueKind.Null) {
+                            errors.Add($"Unexpected property: \"{name}\"");
+                        }
                     }
 
                     return new Error(