add x-forwarded-host

Author: yarbsemaj

README.md

@@ -45,6 +45,7 @@ Please raise an issue on [Github](https://github.com/yarbsemaj/sveltekit-adapter
 ## Versions
 | Adapter Version| Sveltekit Version |
 | ---------------| ----------------- |
+| 1.1.x          | 1.22.0 (Official) |
 | 1.x.x          | 1.0.0 (Official)  |
 | 0.12.x         | 1.0.0-next.433    |
 | 0.11.x         | 1.0.0-next.401    |

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "@yarbsemaj/adapter-lambda",
-  "version": "1.0.1",
+  "version": "1.1.0",
   "license": "MIT",
   "description": "An adapter for [SvelteKit](https://kit.svelte.dev/) for AWS Lambda via Lambda Proxy and API Gateway.  [Serverless](https://www.serverless.com/) deployment.",
   "repository": {

package.json

@@ -124,7 +124,26 @@ resources:
               - HEAD
               - OPTIONS
             ForwardedValues:
+              Headers:
+                - x-forwarded-host
               Cookies:
                 Forward: all
               QueryString: True
             ViewerProtocolPolicy: 'redirect-to-https'
+            FunctionAssociations:
+            - EventType: viewer-request
+              FunctionARN: !GetAtt XForwardFunction.FunctionMetadata.FunctionARN
+
+    XForwardFunction:
+      Type: AWS::CloudFront::Function
+      Properties:
+        AutoPublish: true
+        Name: "${self:provider.stage}-${self:service}-XForwardFunction"
+        FunctionCode: !Sub |
+          function handler(event) {
+            event.request.headers['x-forwarded-host'] = event.request.headers['host']
+            return event.request
+          }
+        FunctionConfig:
+          Comment: 'Add x-forwarded-host'
+          Runtime: cloudfront-js-1.0

serverless.yml

@@ -7,13 +7,14 @@ export async function handler(event, context) {
   const { rawPath, headers, rawQueryString, body, requestContext, isBase64Encoded, cookies } = event;
 
   const encoding = isBase64Encoded ? 'base64' : headers['content-encoding'] || 'utf-8';
+  const domainName = headers['x-forwarded-host']
   const rawBody = typeof body === 'string' ? Buffer.from(body, encoding) : body;
 
   if (cookies) {
     headers['cookie'] = cookies.join('; ')
   }
 
-  let rawURL = `https://${requestContext.domainName}${rawPath}${rawQueryString ? `?${rawQueryString}` : ''}`
+  let rawURL = `https://${domainName}${rawPath}${rawQueryString ? `?${rawQueryString}` : ''}`
 
   await app.init({
 		env: process.env