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I've got API Gateway setup to point to a lambda function, set up as an aws_proxy. I can GET, POST, DELETE just fine, but I'm trying to add a PUT and I getting Method PUT is not allowed by Access-Control-Allow-Methods in preflight response.

XMLHttpRequest cannot load https://api.small.pictures/picture/07e78691-20f9-4a20-8be5-458eaeb73a63. Method PUT is not allowed by Access-Control-Allow-Methods in preflight response.

I think I have my CORS set up properly. Here is the swagger user for the route.

  '/picture/{picId}':

    options:

      summary: CORS support

      description: |

        Enable CORS by returning correct headers

      consumes:

        - application/json

      produces:

        - application/json

      tags:

        - CORS

      x-amazon-apigateway-integration:

        type: mock

        requestTemplates:

          application/json: |

            {

              "statusCode" : 200

            }

        responses:

          "default":

            statusCode: "200"

            responseParameters:

              method.response.header.Access-Control-Allow-Headers : "'Content-Type,X-Amz-Date,Authorization,X-Api-Key'"

              method.response.header.Access-Control-Allow-Methods : "'*'"

              method.response.header.Access-Control-Allow-Origin : "'*'"

            responseTemplates:

              application/json: |

                {}

      parameters:

        - name: picId

          in: path

          required: true

          type: string

      responses:

        200:

          description: Default response for CORS method

          headers:

            Access-Control-Allow-Headers:

              type: "string"

            Access-Control-Allow-Methods:

              type: "string"

            Access-Control-Allow-Origin:

              type: "string"

    x-amazon-apigateway-any-method:

      produces:

      - "application/json"

      responses:

        200:

          description: "200 response"

          schema:

            $ref: "#/definitions/Empty"

      x-swagger-router-controller: main

      x-lambda-function: ../../swiki/build/picture

      x-amazon-apigateway-integration:

        type: aws_proxy

        httpMethod: POST

        uri: arn:aws:apigateway:us-west-2:lambda:path/2015-03-31/functions/@@LambdaFunctionPicture/invocations

        credentials: @@APIGatewayExecutionRole

As you can see I have Access-Control-Allow-Headers, Access-Control-Allow-Methods and Access-Control-Allow-Origin configured.

Why can't I make a PUT request?

1 Answer

0 votes
by (42.5k points)

You have to set the methods manually, because of setting ‘*’ is not supported by most browsers.

Access-Control-Allow-Methods: POST, PUT, GET, OPTIONS

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