From 7afa83fce51ce5d933afdb9024827b8b3a23bb1f Mon Sep 17 00:00:00 2001
From: Joseph Kaile <joseph.kaile@simblocks.io>
Date: Wed, 14 Dec 2022 20:35:55 -0500
Subject: [PATCH 1/3] convert 'X-Cesium-Platform' to the rfc8187 format

---
 native~/Shared/src/UnityAssetAccessor.cpp | 24 +++++++++++++++++++++--
 1 file changed, 22 insertions(+), 2 deletions(-)

diff --git a/native~/Shared/src/UnityAssetAccessor.cpp b/native~/Shared/src/UnityAssetAccessor.cpp
index a95f5234..64296783 100644
--- a/native~/Shared/src/UnityAssetAccessor.cpp
+++ b/native~/Shared/src/UnityAssetAccessor.cpp
@@ -23,12 +23,32 @@
 #include <DotNet/UnityEngine/Networking/UploadHandler.h>
 #include <DotNet/UnityEngine/Networking/UploadHandlerRaw.h>
 
+#include <fstream>
+#include <sstream>
+
+
 using namespace CesiumAsync;
 using namespace CesiumUtility;
 using namespace DotNet;
 
 namespace {
 
+std::string encodeUTF8toASCII(const std::string& input) {
+  std::ostringstream ss;
+  bool includePrefix = false;
+  for (const unsigned char c : input) {
+    if (c == 32) {
+      ss << "%20"; // replace spaces with %20
+    } else if (c < 128) {
+      ss << c;
+    } else {
+      includePrefix = true;
+      ss << std::hex << static_cast<int>(c);
+    }
+  }
+  return includePrefix ? "utf-8''" + ss.str() : ss.str();
+}
+
 class UnityAssetResponse : public IAssetResponse {
 public:
   UnityAssetResponse(
@@ -95,12 +115,12 @@ class UnityAssetRequest : public IAssetRequest {
 namespace CesiumForUnityNative {
 
 UnityAssetAccessor::UnityAssetAccessor()
-    : _cesiumPlatformHeader(
+    : _cesiumPlatformHeader(encodeUTF8toASCII(
           CesiumForUnity::Helpers::ToString(
               UnityEngine::Application::platform())
               .ToStlString() +
           " " + System::Environment::OSVersion().VersionString().ToStlString() +
-          " " + UnityEngine::Application::productName().ToStlString()),
+          " " + UnityEngine::Application::productName().ToStlString())),
       _cesiumVersionHeader(
           CesiumForUnityNative::Cesium::version + " " +
           CesiumForUnityNative::Cesium::commit) {}

From 786cb549d1ed3af34e6d8db839ea706647f28460 Mon Sep 17 00:00:00 2001
From: Joseph Kaile <joseph.kaile@simblocks.io>
Date: Wed, 14 Dec 2022 20:42:52 -0500
Subject: [PATCH 2/3] remove extra line of code

---
 native~/Shared/src/UnityAssetAccessor.cpp | 2 --
 1 file changed, 2 deletions(-)

diff --git a/native~/Shared/src/UnityAssetAccessor.cpp b/native~/Shared/src/UnityAssetAccessor.cpp
index 64296783..51e48e12 100644
--- a/native~/Shared/src/UnityAssetAccessor.cpp
+++ b/native~/Shared/src/UnityAssetAccessor.cpp
@@ -23,10 +23,8 @@
 #include <DotNet/UnityEngine/Networking/UploadHandler.h>
 #include <DotNet/UnityEngine/Networking/UploadHandlerRaw.h>
 
-#include <fstream>
 #include <sstream>
 
-
 using namespace CesiumAsync;
 using namespace CesiumUtility;
 using namespace DotNet;

From 1b0f2f574ad6cc208b05a19b0287f780a743d222 Mon Sep 17 00:00:00 2001
From: Joseph Kaile <joseph.kaile@simblocks.io>
Date: Wed, 14 Dec 2022 22:41:22 -0500
Subject: [PATCH 3/3] seperate unicode characters with % signs

---
 native~/Shared/src/UnityAssetAccessor.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/native~/Shared/src/UnityAssetAccessor.cpp b/native~/Shared/src/UnityAssetAccessor.cpp
index 51e48e12..49d3b782 100644
--- a/native~/Shared/src/UnityAssetAccessor.cpp
+++ b/native~/Shared/src/UnityAssetAccessor.cpp
@@ -41,7 +41,7 @@ std::string encodeUTF8toASCII(const std::string& input) {
       ss << c;
     } else {
       includePrefix = true;
-      ss << std::hex << static_cast<int>(c);
+      ss << "%" << std::hex << static_cast<int>(c);
     }
   }
   return includePrefix ? "utf-8''" + ss.str() : ss.str();