From 9e0fbac6d3cb4e11efdb33c339ccf0adbca0bc6c Mon Sep 17 00:00:00 2001
From: ivarlovlie <git@ivarlovlie.no>
Date: Thu, 1 Apr 2021 22:36:59 +0200
Subject: Initial commit

---
 src/IOL.Helpers/HttpRequestHelpers.cs | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 src/IOL.Helpers/HttpRequestHelpers.cs

(limited to 'src/IOL.Helpers/HttpRequestHelpers.cs')

diff --git a/src/IOL.Helpers/HttpRequestHelpers.cs b/src/IOL.Helpers/HttpRequestHelpers.cs
new file mode 100644
index 0000000..5a0e145
--- /dev/null
+++ b/src/IOL.Helpers/HttpRequestHelpers.cs
@@ -0,0 +1,18 @@
+using System;
+using Microsoft.AspNetCore.Http;
+
+namespace IOL.Helpers
+{
+	public static class HttpRequestHelpers
+	{
+		public static string GetAppHost(this HttpRequest request) {
+			var forwardedHostHeader = request.Headers["X-Forwarded-Host"].ToString();
+			var forwardedProtoHeader = request.Headers["X-Forwarded-Proto"].ToString();
+			if (forwardedHostHeader.HasValue()) {
+				return (forwardedProtoHeader ?? "https") + "://" + forwardedHostHeader;
+			}
+
+			return request.Scheme + "://" + request.Host;
+		}
+	}
+}
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