viewerProtocolPolicy in aws-cloudfront does not seem to work

[seanyu4296]

I'm trying to set my viewerProtocolPolicy to "HTTP and HTTPS" in my Cloudfront but it does not seem to work. It always sets to "redirect-to-https".

Here is my code:

import * as cloudfront from '@aws-cdk/aws-cloudfront';
// import * as route53 from '@aws-cdk/aws-route53';
import * as s3 from '@aws-cdk/aws-s3';
import * as cdk from '@aws-cdk/cdk';
import { ViewerProtocolPolicy } from '@aws-cdk/aws-cloudfront';

export interface StaticSiteProps {
  domainName: string;
  siteSubDomain: string;
  certificateArn?: string;
  s3Region: string;
}

export class StaticSite extends cdk.Construct {
  constructor(parent: cdk.Construct, name: string, props: StaticSiteProps) {
    super(parent, name);
    const siteDomain = props.siteSubDomain + '.' + props.domainName;
    const siteBucket = new s3.Bucket(this, 'SiteBucketReal', {
      bucketName: siteDomain,
      websiteIndexDocument: 'index.html',
      websiteErrorDocument: 'index.html',
      publicReadAccess: true,
    });
    new cdk.Output(this, 'SiteBucketName', { value: siteBucket.bucketName });
    const distribution = new cloudfront.CloudFrontWebDistribution(
      this,
      'SiteDistribution',
      {
        viewerProtocolPolicy: ViewerProtocolPolicy.AllowAll,
        originConfigs: [
          {
            customOriginSource: {
              domainName: `${siteDomain}.s3-website-${
                props.s3Region
              }.amazonaws.com`,
            },
            behaviors: [{ isDefaultBehavior: true }],
          },
        ],
      },
    );
    new cdk.Output(this, 'DistributionId', {
      value: distribution.distributionId,
    });    
  }
}

Here is the result when i run cdk synth

Resources:
  StaticSiteSiteBucketRealB56A52B3:
    Type: AWS::S3::Bucket
    Properties:
      BucketName: test.zap.com.ph
      WebsiteConfiguration:
        ErrorDocument: index.html
        IndexDocument: index.html
    DeletionPolicy: Retain
    Metadata:
      aws:cdk:path: TestCdkClient/StaticSite/SiteBucketReal/Resource
  StaticSiteSiteBucketRealPolicy828DCFC9:
    Type: AWS::S3::BucketPolicy
    Properties:
      Bucket:
        Ref: StaticSiteSiteBucketRealB56A52B3
      PolicyDocument:
        Statement:
          - Action: s3:GetObject
            Effect: Allow
            Principal: "*"
            Resource:
              Fn::Join:
                - ""
                - - Fn::GetAtt:
                      - StaticSiteSiteBucketRealB56A52B3
                      - Arn
                  - /*
        Version: "2012-10-17"
    Metadata:
      aws:cdk:path: TestCdkClient/StaticSite/SiteBucketReal/Policy/Resource
  StaticSiteSiteDistributionCFDistribution500D676B:
    Type: AWS::CloudFront::Distribution
    Properties:
      DistributionConfig:
        CacheBehaviors: []
        DefaultCacheBehavior:
          AllowedMethods:
            - GET
            - HEAD
          CachedMethods:
            - GET
            - HEAD
          ForwardedValues:
            Cookies:
              Forward: none
            QueryString: false
          TargetOriginId: origin1
          ViewerProtocolPolicy: redirect-to-https
        DefaultRootObject: index.html
        Enabled: true
        HttpVersion: http2
        IPV6Enabled: true
        Origins:
          - CustomOriginConfig:
              HTTPPort: 80
              HTTPSPort: 443
              OriginKeepaliveTimeout: 5
              OriginProtocolPolicy: https-only
              OriginReadTimeout: 30
              OriginSSLProtocols:
                - TLSv1.2
            DomainName: test.zap.com.ph.s3-website-ap-southeast-1.amazonaws.com
            Id: origin1
        PriceClass: PriceClass_100
        ViewerCertificate:
          CloudFrontDefaultCertificate: true
    Metadata:
      aws:cdk:path: TestCdkClient/StaticSite/SiteDistribution/CFDistribution
  CDKMetadata:
    Type: AWS::CDK::Metadata
    Properties:
      Modules: aws-cdk=0.24.1,@aws-cdk/aws-cloudfront=0.24.1,@aws-cdk/aws-codepipeline-api=0.24.1,@aws-cdk/aws-events=0.24.1,@aws-cdk/aws-iam=0.24.1,@aws-cdk/aws-kms=0.24.1,@aws-cdk/aws-s3=0.24.1,@aws-cdk/aws-s3-notifications=0.24.1,@aws-cdk/cdk=0.24.1,@aws-cdk/cx-api=0.24.1,jsii-runtime=node.js/v11.6.0
Outputs:
  StaticSiteSiteBucketNameDAB52DD2:
    Value:
      Ref: StaticSiteSiteBucketRealB56A52B3
  StaticSiteDistributionId8C64EF2A:
    Value:
      Ref: StaticSiteSiteDistributionCFDistribution500D676B