From 49f33828f582826f3a606000d4a7fd8e165e34f9 Mon Sep 17 00:00:00 2001
From: Ryan Kistner <azuisleet@gmail.com>
Date: Sat, 27 Apr 2019 19:08:20 -0600
Subject: [PATCH] Leave null WebAPI args defined but empty

---
 Samples/6.WebAPI/Program.cs                | 2 +-
 SteamKit2/SteamKit2/Steam/WebAPI/WebAPI.cs | 8 ++++++--
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/Samples/6.WebAPI/Program.cs b/Samples/6.WebAPI/Program.cs
index df01c03d6..9efdb6761 100644
--- a/Samples/6.WebAPI/Program.cs
+++ b/Samples/6.WebAPI/Program.cs
@@ -92,7 +92,7 @@ static void Main( string[] args )
             // you can call interface functions through a Call method
             using ( WebAPI.Interface steamNews = WebAPI.GetInterface( "ISteamNews" ) )
             {
-                Dictionary<string, object> newsArgs = new Dictionary<string,object>();
+                Dictionary<string, object> newsArgs = new Dictionary<string, object>();
                 newsArgs[ "appid" ] = "440";
 
                 KeyValue results = steamNews.Call( "GetNewsForApp", /* version */ 1, newsArgs );
diff --git a/SteamKit2/SteamKit2/Steam/WebAPI/WebAPI.cs b/SteamKit2/SteamKit2/Steam/WebAPI/WebAPI.cs
index 64cadff54..78369142f 100644
--- a/SteamKit2/SteamKit2/Steam/WebAPI/WebAPI.cs
+++ b/SteamKit2/SteamKit2/Steam/WebAPI/WebAPI.cs
@@ -272,9 +272,13 @@ async Task<KeyValue> CallAsyncCore( HttpMethod method, string func, int version
                     string key = HttpUtility.UrlEncode( kvp.Key );
                     string value;
 
-                    if ( kvp.Value is byte[] )
+                    if ( kvp.Value == null )
                     {
-                        value = HttpUtility.UrlEncode( kvp.Value as byte[] );
+                        value = string.Empty;
+                    }
+                    else if ( kvp.Value is byte[] buffer )
+                    {
+                        value = HttpUtility.UrlEncode( buffer );
                     }
                     else
                     {