From 18c9b2fcda1c3de340297c83bee11e279907639b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Igr=20Alex=C3=A1nder=20Fern=C3=A1ndez=20Sa=C3=BAco?=
 <alexander.fernandez.sauco@gmail.com>
Date: Thu, 26 Mar 2020 15:13:19 -0400
Subject: [PATCH] Add a CORS policy to TypeHost to allow discover backend
 service endpoints from a web frontend like a blazor webassembly app

---
 src/Microsoft.Tye.Hosting/TyeHost.cs | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/src/Microsoft.Tye.Hosting/TyeHost.cs b/src/Microsoft.Tye.Hosting/TyeHost.cs
index 165ed9fe..1e7847ec 100644
--- a/src/Microsoft.Tye.Hosting/TyeHost.cs
+++ b/src/Microsoft.Tye.Hosting/TyeHost.cs
@@ -157,6 +157,20 @@ namespace Microsoft.Tye.Hosting
                     o.FileProvider = new CompositeFileProvider(o.FileProvider, fileProvider);
                 });
 
+            builder.Services.AddCors(
+                options =>
+                {
+                    options.AddPolicy(
+                        "default",
+                        policy =>
+                        {
+                            policy
+                                .AllowAnyOrigin()
+                                .AllowAnyHeader()
+                                .AllowAnyMethod();
+                        });
+                });
+
             builder.Services.AddSingleton(application);
             var app = builder.Build();
             return app;
@@ -170,6 +184,8 @@ namespace Microsoft.Tye.Hosting
 
             app.UseDeveloperExceptionPage();
 
+            app.UseCors("default");
+
             app.UseStaticFiles();
 
             app.UseRouting();