provider:
  name: aws
  runtime: nodejs12.x
  lambdaHashingVersion: '20201221'
  role: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
  httpApi:
    cors:
      allowedOrigins:
        - '*'
      allowedMethods:
        - GET
        - OPTIONS
        - POST
        - PUT
        - DELETE
      allowedHeaders:
        - Content-Type
        - X-Amz-Date
        - Authorization
        - X-Api-Key
        - X-Amz-Security-Token
        - X-Amz-User-Agent
        - X-Transaction-Key
        - Access-Control-Allow-Origin
        - Access-Control-Allow-Methods
        - Access-Control-Allow-Headers
        - Access-Control-Allow-Credentials

functions:

  getOTP:
    handler: xxxx/xxxx.yyyy
    events:
      - httpApi:
          path: /xxxx/yyyy
          method: POST
      - httpApi:
          path: /xxxx/yyyy
          method: OPTIONS

module.exports.yyyy= async (event) => {
  const body = JSON.parse(event.body);


  return {
    statusCode: 200,
    headers: {
      "Access-Control-Allow-Origin": "*", // Required for CORS support to work
      "Access-Control-Allow-Credentials": true, // Required for cookies, authorization headers with HTTPS
      "Access-Control-Allow-Headers" : "*",
      "Access-Control-Allow-Methods": "*",
      "Content-Type": "application/json"
    },
    body: JSON.stringify({
      message: "yayay",
    }),
 };

Sorry for bad English. I am using a serverless framework to build API services. I just follow the serverless documentation to build httpApi events on aws. But the cors setting does not work. This is my yml file and sample code.

CodePudding user response：

There are plenty of explaination for the CORS on httpAPI.

1. Adding x-api-key in the Access-Control-Allow-Headers
2. Explicitly define your route methods

Refer here

CodePudding user response：

Have you tried setting the cors config at the function level instead of the service level?

functions:

  getOTP:
    handler: xxxx/xxxx.yyyy
    events:
      - http:
          path: /xxxx/yyyy
          method: POST
          cors: true