try with proxy

Author: tothalex

src/api.ts

@@ -2,9 +2,6 @@ import {
   AuthorizationType,
   CfnAuthorizer,
   Cors,
-  IResource,
-  MockIntegration,
-  PassthroughBehavior,
   RestApi,
 } from 'aws-cdk-lib/aws-apigateway'
 import { UserPool } from 'aws-cdk-lib/aws-cognito'
@@ -21,6 +18,9 @@ export const createAPI = (props: {
     },
     defaultCorsPreflightOptions: {
       allowOrigins: Cors.ALL_ORIGINS,
+      allowMethods: Cors.ALL_METHODS,
+      allowHeaders: ['*'],
+      allowCredentials: true,
     },
   })
 

src/index.ts

@@ -92,17 +92,6 @@ export default class AwsGoStack extends Stack {
 
       resource.addMethod(api.method, createLambdaIntegration({ lambdaFn }), {
         ...methodOptions,
-        methodResponses: [
-          {
-            statusCode: '200',
-            responseParameters: {
-              'method.response.header.Access-Control-Allow-Headers': true,
-              'method.response.header.Access-Control-Allow-Methods': true,
-              'method.response.header.Access-Control-Allow-Credentials': true,
-              'method.response.header.Access-Control-Allow-Origin': true,
-            },
-          },
-        ],
       })
     })
   }

src/integration.ts

@@ -1,28 +1,8 @@
-import {
-  LambdaIntegration,
-  PassthroughBehavior,
-} from 'aws-cdk-lib/aws-apigateway'
+import { LambdaIntegration } from 'aws-cdk-lib/aws-apigateway'
 import { IFunction } from 'aws-cdk-lib/aws-lambda'
 
 export const createLambdaIntegration = (props: { lambdaFn: IFunction }) => {
   return new LambdaIntegration(props.lambdaFn, {
-    proxy: false,
-    integrationResponses: [
-      {
-        statusCode: '200',
-        responseParameters: {
-          'method.response.header.Access-Control-Allow-Headers':
-            "'Content-Type,X-Amz-Date,Authorization,X-Api-Key,X-Amz-Security-Token,X-Amz-User-Agent'",
-          'method.response.header.Access-Control-Allow-Origin': "'*'",
-          'method.response.header.Access-Control-Allow-Credentials': "'false'",
-          'method.response.header.Access-Control-Allow-Methods':
-            "'OPTIONS,GET,PUT,POST,DELETE'",
-        },
-      },
-    ],
-    passthroughBehavior: PassthroughBehavior.NEVER,
-    requestTemplates: {
-      'application/json': '{"statuscode": 200}',
-    },
+    proxy: true,
   })
 }