amazon-web-services - 如何使用 AWS_PROXY 模式通过 API Gateway 和 CloudFront 通过 AWS Lambda 返回二进制内容？

标签 amazon-web-services aws-lambda aws-cloudformation aws-api-gateway amazon-cloudfront

如何使用 AWS_PROXY 预置由 CloudFront 前置(以便我可以进行 HTTP 到 HTTPS 重定向)并由 AWS Lambda 函数支持的 AWS API 网关使用 CloudFormation 的集成类型？

下面是一个 CloudFormation 模板，显示了我所尝试的内容。它包括

  • 一个简单的 Lambda 函数，返回 expected output format对于 AWS_PROXY 模式下的 Lambda。
    • 这已将 isBase64Encoded 设置为 True。
  • 一个 AWS::ApiGateway::RestApi CloudFormation 资源，其中包含一个 BinaryMediaTypes 属性，该属性的值为 *~1*。

我已阅读这篇 AWS 论坛帖子 AWS_PROXY and binary responses但还没弄清楚我做错了什么。论坛帖子包括人们发布有关 AWS_PROXY 模式以及其他模式的帖子，因此有点令人困惑。

此 AWS 文档页面，Support Binary Payloads in API Gateway我相信，它讨论的是 AWS_PROXY 以外的模式，因为它讨论了设置 IntegrationResponses需要使用 StatusCode 的属性匹配 MethodResponse状态代码。

这是一个显示该问题的 CloudFormation 模板。您可以通过以下步骤重现它

  1. 为您帐户中现有 Route53 区域中的 DNS 域名配置 ACM 证书
  2. 提供域名、区域名称(以“.”字符结尾)和 ACM ARN 作为 CloudFormation 堆栈的参数
  3. 使用下面的模板启动 CloudFormation 堆栈(因为它使用 CloudFront，这可能需要 30 分钟)
  4. curl API 网关的 URL

如果工作正常，您将返回一个二进制 png HTTP 响应，而不是返回一个 base64 响应。

AWSTemplateFormatVersion: 2010-09-09
Description: Test binary responses with AWS_PROXY mode
Parameters:
  CustomDomainName:
    Type: String
    Description: The custom domain name to use for the API
    Default: ''
    # AWS::ApiGateway::DomainName can not contain any uppercase characters
    AllowedPattern: '^[^A-Z]*$'
    ConstraintDescription: must not contain any uppercase characters
  DomainNameZone:
    Type: String
    Description: The Route53 DNS zone containing the custom domain name
    Default: ''
  CertificateArn:
    Type: String
    Description: The ARN of the AWS ACM Certificate for your custom domain name
    Default: ''
Resources:
  TestFunctionRole:
    Type: AWS::IAM::Role
    Properties:
      AssumeRolePolicyDocument:
        Version: 2012-10-17
        Statement:
          - Effect: Allow
            Principal:
              Service:
                - lambda.amazonaws.com
            Action:
              - sts:AssumeRole
      Policies:
        - PolicyName: AllowLambdaLogging
          PolicyDocument:
            Version: 2012-10-17
            Statement:
              - Effect: Allow
                Action:
                  - logs:CreateLogGroup
                  - logs:CreateLogStream
                  - logs:PutLogEvents
                Resource: '*'
  TestFunction:
    Type: AWS::Lambda::Function
    Properties:
      Description: Test Function
      Code:
        ZipFile: |
          def lambda_handler(event, context):
            body = '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'
            return {
              'headers': {'Content-Type': 'image/png'},
              'statusCode': 200,
              'isBase64Encoded': True,
              'body': body}
      Handler: index.lambda_handler
      Runtime: python3.7
      Role: !GetAtt TestFunctionRole.Arn
      Timeout: 900
  TestFunctionLogGroup:
    Type: AWS::Logs::LogGroup
    Properties:
      # Let's hope that the Lambda function doesn't execute before this LogGroup
      # resource is created, creating the LogGroup with no expiration and
      # preventing this resource from creating
      LogGroupName: !Join [ '/', ['/aws/lambda', !Ref 'TestFunction' ] ]
      RetentionInDays: 1
  TestRoute53RecordSet:
    Type: AWS::Route53::RecordSet
    Properties:
      AliasTarget:
        DNSName: !GetAtt TestCloudFrontDistribution.DomainName
        HostedZoneId: Z2FDTNDATAQYW2  # https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-route53-aliastarget-1.html
      Comment: Bind the custom domain name to the Test CloudFront fronted API Gateway
      HostedZoneName: !Ref DomainNameZone
      Name: !Ref CustomDomainName
      Type: A
  TestApi:
    Type: AWS::ApiGateway::RestApi
    Properties:
      Name: Test
      BinaryMediaTypes:
        - '*~1*'
      Description: Test API
      FailOnWarnings: true
      EndpointConfiguration:
        Types:
          - REGIONAL
  TestApiGatewayDomainName:
    # The ApiGateway requires a custom domain name, despite sitting behind
    # CloudFront. This is because we want to pass all ( * ) HTTP headers
    # through CloudFront and onto API Gateway. If we didn't set a custom domain
    # name on the API Gateway, the "Host" header passed through from CloudFront
    # to API Gateway would be for the custom domain, but API Gateway, which uses
    # SNI, wouldn't know which TLS certificate to use in the handshake because
    # API Gateway would have no record of that Host header. This would result in
    # API Gateway being unable to setup a TLS connection with the inbound
    # CloudFront connection attempt, API Gateway writing no logs about this
    # fact, and CloudFront returning to the user an error of
    # {"message":"Forbidden"}
    # If we weren't passing the "Host" header from CloudFront to API Gateway
    # this resource wouldn't be needed
    Type: AWS::ApiGateway::DomainName
    Properties:
      # Uppercase letters are not supported in DomainName
      DomainName: !Ref CustomDomainName
      EndpointConfiguration:
        Types:
          - REGIONAL
      RegionalCertificateArn: !Ref CertificateArn
      SecurityPolicy: TLS_1_2
  TestBasePathMapping:
    Type: AWS::ApiGateway::BasePathMapping
    Properties:
      # BasePath:   # Not specifying this so that we have no base path
      DomainName: !Ref TestApiGatewayDomainName
      RestApiId: !Ref TestApi
      Stage: !Ref TestApiStage
  TestLambdaPermission:
    Type: AWS::Lambda::Permission
    Properties:
      Action: lambda:invokeFunction
      FunctionName: !GetAtt TestFunction.Arn
      Principal: apigateway.amazonaws.com
      SourceArn: !Join [ '', [ 'arn:aws:execute-api:', !Ref 'AWS::Region', ':', !Ref 'AWS::AccountId', ':', !Ref 'TestApi', '/*/*' ] ]
  TestApiStage:
    Type: AWS::ApiGateway::Stage
    Properties:
      DeploymentId: !Ref TestApiDeployment
      MethodSettings:
        - DataTraceEnabled: true
          HttpMethod: '*'
          ResourcePath: /*
      RestApiId: !Ref TestApi
  TestApiDeployment:
    Type: AWS::ApiGateway::Deployment
    DependsOn:
      - TestRequest
    Properties:
      RestApiId: !Ref TestApi
      StageName: DummyStage
      # Deployment with an Empty Embedded Stage
      # The following instructional text is no longer present in the AWS
      # documentation for AWS::ApiGateway::Deployment StageName and it's not
      # clear if it still applies.
      #
      # "Note This property is required by API Gateway. We recommend that you
      # specify a name using any value (see Examples) and that you don’t use
      # this stage. We recommend not using this stage because it is tied to
      # this deployment, which means you can’t delete one without deleting the
      # other. For example, if you delete this deployment, API Gateway also
      # deletes this stage, which you might want to keep. Instead, use the
      # AWS::ApiGateway::Stage resource to create and associate a stage with
      # this deployment."
  TestResource:
    Type: AWS::ApiGateway::Resource
    Properties:
      RestApiId: !Ref TestApi
      ParentId: !GetAtt TestApi.RootResourceId
      PathPart: '{proxy+}'
  TestRequest:
    DependsOn: TestLambdaPermission
    Type: AWS::ApiGateway::Method
    Properties:
      AuthorizationType: NONE
      HttpMethod: GET
      Integration:
        Type: AWS_PROXY
        # IntegrationHttpMethod is POST regardless of the HttpMethod for this resource
        # https://docs.aws.amazon.com/apigateway/latest/developerguide/set-up-lambda-proxy-integrations.html#set-up-lambda-proxy-integration-using-cli
        # "For Lambda integrations, you must use the HTTP method of POST for the
        # integration request, according to the specification of the Lambda service
        # action for function invocations."
        IntegrationHttpMethod: POST
        Uri: !Join [ '', [ 'arn:aws:apigateway:', !Ref 'AWS::Region', ':lambda:path/2015-03-31/functions/', !GetAtt 'TestFunction.Arn', '/invocations' ] ]
      ResourceId: !Ref TestResource
      RestApiId: !Ref TestApi
  TestPOSTRequest:
    DependsOn: TestLambdaPermission
    Type: AWS::ApiGateway::Method
    Properties:
      AuthorizationType: NONE
      HttpMethod: POST
      Integration:
        Type: AWS_PROXY
        # https://docs.aws.amazon.com/apigateway/latest/developerguide/set-up-lambda-proxy-integrations.html#set-up-lambda-proxy-integration-using-cli
        # "For Lambda integrations, you must use the HTTP method of POST for the
        # integration request, according to the specification of the Lambda service
        # action for function invocations."
        IntegrationHttpMethod: POST
        Uri: !Join [ '', [ 'arn:aws:apigateway:', !Ref 'AWS::Region', ':lambda:path/2015-03-31/functions/', !GetAtt 'TestFunction.Arn', '/invocations' ] ]
      ResourceId: !Ref TestResource
      RestApiId: !Ref TestApi
  TestRootRequest:
    # This resource is necessary to get API Gateway to respond to requests for the '/' path
    # Without it API Gateway will respond to requests for '/' with the error
    # {"message":"Missing Authentication Token"}
    # https://stackoverflow.com/q/46578615/168874
    # https://stackoverflow.com/q/52909329/168874
    DependsOn: TestLambdaPermission
    Type: AWS::ApiGateway::Method
    Properties:
      AuthorizationType: NONE
      HttpMethod: GET
      Integration:
        Type: AWS_PROXY
        # IntegrationHttpMethod is POST regardless of the HttpMethod for this resource
        # https://docs.aws.amazon.com/apigateway/latest/developerguide/set-up-lambda-proxy-integrations.html#set-up-lambda-proxy-integration-using-cli
        # "For Lambda integrations, you must use the HTTP method of POST for the
        # integration request, according to the specification of the Lambda service
        # action for function invocations."
        IntegrationHttpMethod: POST
        Uri: !Join [ '', [ 'arn:aws:apigateway:', !Ref 'AWS::Region', ':lambda:path/2015-03-31/functions/', !GetAtt 'TestFunction.Arn', '/invocations' ] ]
      # ResourceId must use the RootResourceId attribute of the AWS::ApiGateway::RestApi
      # https://stackoverflow.com/a/56121914/168874
      ResourceId: !GetAtt TestApi.RootResourceId
      RestApiId: !Ref TestApi
  TestCloudFrontDistribution:
    Type: AWS::CloudFront::Distribution
    Properties:
      DistributionConfig:
        Comment: !Join [ ':', [!Ref 'AWS::StackName', 'Test']]
        DefaultCacheBehavior:
          AllowedMethods:
            - GET
            - HEAD
            - POST
            - DELETE
            - OPTIONS
            - PUT
            - PATCH
          Compress: true
          DefaultTTL: 0
          MinTTL: 0
          MaxTTL: 0
          ForwardedValues:
            Cookies:
              Forward: all
            QueryString: true
            Headers:
              - '*'
          TargetOriginId: TestCloudFrontOriginId
          ViewerProtocolPolicy: redirect-to-https
        # https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-cloudfront-distribution-distributionconfig.html#cfn-cloudfront-distribution-distributionconfig-defaultrootobject
        DefaultRootObject: ''  # "If you don't want to specify a default root object when you create a distribution, include an empty DefaultRootObject element."
        Enabled: true
        Aliases:
          - !Ref CustomDomainName
        HttpVersion: http2
        IPV6Enabled: true
        #Logging:
        #  Logging
        Origins:
          - CustomOriginConfig:
              OriginProtocolPolicy: https-only
              OriginSSLProtocols:
                - TLSv1.2
            DomainName: !GetAtt TestApiGatewayDomainName.RegionalDomainName
            Id: TestCloudFrontOriginId
            # OriginPath: !Join [ '', [ '/', !Ref 'TestApiStage' ] ]
        PriceClass: PriceClass_100  # US, Canada, Europe, Israel
        ViewerCertificate:
          AcmCertificateArn: !Ref CertificateArn
          MinimumProtocolVersion: TLSv1.2_2018
          SslSupportMethod: sni-only

最佳答案

我联系了 AWS Support，经过多次来回发现问题出在 AWS 文档中。

AWS::ApiGateway::RestApi CloudFormation resource type 上的文档页面错误表述

Slashes must be escaped with ~1. For example, image/png would be image~1png in the BinaryMediaTypes list.

事实证明这不是真的，您应该在 BinaryMediaTypes 字段中输入的值是 */* 而不是 *~1*。这使得该字段看起来像这样

Resources:
  TestApi:
    Type: AWS::ApiGateway::RestApi
    Properties:
      Name: Test
      BinaryMediaTypes:
        - '*/*'

因此，通过对问题中的模板进行更改，生成的堆栈可以正确提供二进制资源。

我已确认此 AWS 文档页面 Support Binary Payloads in API Gateway ，确实在谈论 AWS_PROXY 之外的模式，并且不适用于我的问题。

我已确认有效的修复模板是这样的

AWSTemplateFormatVersion: 2010-09-09
Description: Test binary responses with AWS_PROXY mode
Parameters:
  CustomDomainName:
    Type: String
    Description: The custom domain name to use for the API
    Default: ''
    # AWS::ApiGateway::DomainName can not contain any uppercase characters
    AllowedPattern: '^[^A-Z]*$'
    ConstraintDescription: must not contain any uppercase characters
  DomainNameZone:
    Type: String
    Description: The Route53 DNS zone containing the custom domain name
    Default: ''
  CertificateArn:
    Type: String
    Description: The ARN of the AWS ACM Certificate for your custom domain name
    Default: ''
Resources:
  TestFunctionRole:
    Type: AWS::IAM::Role
    Properties:
      AssumeRolePolicyDocument:
        Version: 2012-10-17
        Statement:
          - Effect: Allow
            Principal:
              Service:
                - lambda.amazonaws.com
            Action:
              - sts:AssumeRole
      Policies:
        - PolicyName: AllowLambdaLogging
          PolicyDocument:
            Version: 2012-10-17
            Statement:
              - Effect: Allow
                Action:
                  - logs:CreateLogGroup
                  - logs:CreateLogStream
                  - logs:PutLogEvents
                Resource: '*'
  TestFunction:
    Type: AWS::Lambda::Function
    Properties:
      Description: Test Function
      Code:
        ZipFile: |
          def lambda_handler(event, context):
            body = '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'
            return {
              'headers': {'Content-Type': 'image/png'},
              'statusCode': 200,
              'isBase64Encoded': True,
              'body': body}
      Handler: index.lambda_handler
      Runtime: python3.7
      Role: !GetAtt TestFunctionRole.Arn
      Timeout: 900
  TestFunctionLogGroup:
    Type: AWS::Logs::LogGroup
    Properties:
      # Let's hope that the Lambda function doesn't execute before this LogGroup
      # resource is created, creating the LogGroup with no expiration and
      # preventing this resource from creating
      LogGroupName: !Join [ '/', ['/aws/lambda', !Ref 'TestFunction' ] ]
      RetentionInDays: 1
  TestRoute53RecordSet:
    Type: AWS::Route53::RecordSet
    Properties:
      AliasTarget:
        DNSName: !GetAtt TestCloudFrontDistribution.DomainName
        HostedZoneId: Z2FDTNDATAQYW2  # https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-route53-aliastarget-1.html
      Comment: Bind the custom domain name to the Test CloudFront fronted API Gateway
      HostedZoneName: !Ref DomainNameZone
      Name: !Ref CustomDomainName
      Type: A
  TestApi:
    Type: AWS::ApiGateway::RestApi
    Properties:
      Name: Test
      BinaryMediaTypes:
        - '*/*'
      Description: Test API
      FailOnWarnings: true
      EndpointConfiguration:
        Types:
          - REGIONAL
  TestApiGatewayDomainName:
    # The ApiGateway requires a custom domain name, despite sitting behind
    # CloudFront. This is because we want to pass all ( * ) HTTP headers
    # through CloudFront and onto API Gateway. If we didn't set a custom domain
    # name on the API Gateway, the "Host" header passed through from CloudFront
    # to API Gateway would be for the custom domain, but API Gateway, which uses
    # SNI, wouldn't know which TLS certificate to use in the handshake because
    # API Gateway would have no record of that Host header. This would result in
    # API Gateway being unable to setup a TLS connection with the inbound
    # CloudFront connection attempt, API Gateway writing no logs about this
    # fact, and CloudFront returning to the user an error of
    # {"message":"Forbidden"}
    # If we weren't passing the "Host" header from CloudFront to API Gateway
    # this resource wouldn't be needed
    Type: AWS::ApiGateway::DomainName
    Properties:
      # Uppercase letters are not supported in DomainName
      DomainName: !Ref CustomDomainName
      EndpointConfiguration:
        Types:
          - REGIONAL
      RegionalCertificateArn: !Ref CertificateArn
      SecurityPolicy: TLS_1_2
  TestBasePathMapping:
    Type: AWS::ApiGateway::BasePathMapping
    Properties:
      # BasePath:   # Not specifying this so that we have no base path
      DomainName: !Ref TestApiGatewayDomainName
      RestApiId: !Ref TestApi
      Stage: !Ref TestApiStage
  TestLambdaPermission:
    Type: AWS::Lambda::Permission
    Properties:
      Action: lambda:invokeFunction
      FunctionName: !GetAtt TestFunction.Arn
      Principal: apigateway.amazonaws.com
      SourceArn: !Join [ '', [ 'arn:aws:execute-api:', !Ref 'AWS::Region', ':', !Ref 'AWS::AccountId', ':', !Ref 'TestApi', '/*/*' ] ]
  TestApiStage:
    Type: AWS::ApiGateway::Stage
    Properties:
      DeploymentId: !Ref TestApiDeployment
      MethodSettings:
        - DataTraceEnabled: true
          HttpMethod: '*'
          ResourcePath: /*
      RestApiId: !Ref TestApi
  TestApiDeployment:
    Type: AWS::ApiGateway::Deployment
    DependsOn:
      - TestRequest
    Properties:
      RestApiId: !Ref TestApi
      StageName: DummyStage
      # Deployment with an Empty Embedded Stage
      # The following instructional text is no longer present in the AWS
      # documentation for AWS::ApiGateway::Deployment StageName and it's not
      # clear if it still applies.
      #
      # "Note This property is required by API Gateway. We recommend that you
      # specify a name using any value (see Examples) and that you don’t use
      # this stage. We recommend not using this stage because it is tied to
      # this deployment, which means you can’t delete one without deleting the
      # other. For example, if you delete this deployment, API Gateway also
      # deletes this stage, which you might want to keep. Instead, use the
      # AWS::ApiGateway::Stage resource to create and associate a stage with
      # this deployment."
  TestResource:
    Type: AWS::ApiGateway::Resource
    Properties:
      RestApiId: !Ref TestApi
      ParentId: !GetAtt TestApi.RootResourceId
      PathPart: '{proxy+}'
  TestRequest:
    DependsOn: TestLambdaPermission
    Type: AWS::ApiGateway::Method
    Properties:
      AuthorizationType: NONE
      HttpMethod: GET
      Integration:
        Type: AWS_PROXY
        # IntegrationHttpMethod is POST regardless of the HttpMethod for this resource
        # https://docs.aws.amazon.com/apigateway/latest/developerguide/set-up-lambda-proxy-integrations.html#set-up-lambda-proxy-integration-using-cli
        # "For Lambda integrations, you must use the HTTP method of POST for the
        # integration request, according to the specification of the Lambda service
        # action for function invocations."
        IntegrationHttpMethod: POST
        Uri: !Join [ '', [ 'arn:aws:apigateway:', !Ref 'AWS::Region', ':lambda:path/2015-03-31/functions/', !GetAtt 'TestFunction.Arn', '/invocations' ] ]
      ResourceId: !Ref TestResource
      RestApiId: !Ref TestApi
  TestPOSTRequest:
    DependsOn: TestLambdaPermission
    Type: AWS::ApiGateway::Method
    Properties:
      AuthorizationType: NONE
      HttpMethod: POST
      Integration:
        Type: AWS_PROXY
        # https://docs.aws.amazon.com/apigateway/latest/developerguide/set-up-lambda-proxy-integrations.html#set-up-lambda-proxy-integration-using-cli
        # "For Lambda integrations, you must use the HTTP method of POST for the
        # integration request, according to the specification of the Lambda service
        # action for function invocations."
        IntegrationHttpMethod: POST
        Uri: !Join [ '', [ 'arn:aws:apigateway:', !Ref 'AWS::Region', ':lambda:path/2015-03-31/functions/', !GetAtt 'TestFunction.Arn', '/invocations' ] ]
      ResourceId: !Ref TestResource
      RestApiId: !Ref TestApi
  TestRootRequest:
    # This resource is necessary to get API Gateway to respond to requests for the '/' path
    # Without it API Gateway will respond to requests for '/' with the error
    # {"message":"Missing Authentication Token"}
    # https://stackoverflow.com/q/46578615/168874
    # https://stackoverflow.com/q/52909329/168874
    DependsOn: TestLambdaPermission
    Type: AWS::ApiGateway::Method
    Properties:
      AuthorizationType: NONE
      HttpMethod: GET
      Integration:
        Type: AWS_PROXY
        # IntegrationHttpMethod is POST regardless of the HttpMethod for this resource
        # https://docs.aws.amazon.com/apigateway/latest/developerguide/set-up-lambda-proxy-integrations.html#set-up-lambda-proxy-integration-using-cli
        # "For Lambda integrations, you must use the HTTP method of POST for the
        # integration request, according to the specification of the Lambda service
        # action for function invocations."
        IntegrationHttpMethod: POST
        Uri: !Join [ '', [ 'arn:aws:apigateway:', !Ref 'AWS::Region', ':lambda:path/2015-03-31/functions/', !GetAtt 'TestFunction.Arn', '/invocations' ] ]
      # ResourceId must use the RootResourceId attribute of the AWS::ApiGateway::RestApi
      # https://stackoverflow.com/a/56121914/168874
      ResourceId: !GetAtt TestApi.RootResourceId
      RestApiId: !Ref TestApi
  TestCloudFrontDistribution:
    Type: AWS::CloudFront::Distribution
    Properties:
      DistributionConfig:
        Comment: !Join [ ':', [!Ref 'AWS::StackName', 'Test']]
        DefaultCacheBehavior:
          AllowedMethods:
            - GET
            - HEAD
            - POST
            - DELETE
            - OPTIONS
            - PUT
            - PATCH
          Compress: true
          DefaultTTL: 0
          MinTTL: 0
          MaxTTL: 0
          ForwardedValues:
            Cookies:
              Forward: all
            QueryString: true
            Headers:
              - '*'
          TargetOriginId: TestCloudFrontOriginId
          ViewerProtocolPolicy: redirect-to-https
        # https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-cloudfront-distribution-distributionconfig.html#cfn-cloudfront-distribution-distributionconfig-defaultrootobject
        DefaultRootObject: ''  # "If you don't want to specify a default root object when you create a distribution, include an empty DefaultRootObject element."
        Enabled: true
        Aliases:
          - !Ref CustomDomainName
        HttpVersion: http2
        IPV6Enabled: true
        #Logging:
        #  Logging
        Origins:
          - CustomOriginConfig:
              OriginProtocolPolicy: https-only
              OriginSSLProtocols:
                - TLSv1.2
            DomainName: !GetAtt TestApiGatewayDomainName.RegionalDomainName
            Id: TestCloudFrontOriginId
            # OriginPath: !Join [ '', [ '/', !Ref 'TestApiStage' ] ]
        PriceClass: PriceClass_100  # US, Canada, Europe, Israel
        ViewerCertificate:
          AcmCertificateArn: !Ref CertificateArn
          MinimumProtocolVersion: TLSv1.2_2018
          SslSupportMethod: sni-only

如果 AWS 更新此文档页面来解决此问题，您可以看到原始页面 here

关于amazon-web-services - 如何使用 AWS_PROXY 模式通过 API Gateway 和 CloudFront 通过 AWS Lambda 返回二进制内容？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/59615948/

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