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Function URL

Uses the same Request and Response structures as the API Gateway Http API, but has some different limits.

See AWS Lambda Function URLs vs. Amazon API Gateway for a comparison to API Gateway.

Limits

Lambda specific hard limitations

  • Payload limit of 6mb for the Lambda
  • Maximum timeouts up to 900 seconds (15 minutes)

Request

{
  "version": "2.0",
  "rawPath": "/my/path",
  "rawQueryString": "parameter1=value1&parameter1=value2&parameter2=value",
  "cookies": [
    "cookie1",
    "cookie2"
  ],
  "headers": {
    "header1": "value1",
    "header2": "value1,value2"
  },
  "queryStringParameters": {
    "parameter1": "value1,value2",
    "parameter2": "value"
  },
  "requestContext": {
    "accountId": "123456789012",
    "apiId": "<urlid>",
    "authorizer": {
      "iam": {
        "accessKey": "AKIA...",
        "accountId": "111122223333",
        "callerId": "AIDA...",
        "userArn": "arn:aws:iam::111122223333:user/example-user",
        "userId": "AIDA..."
      }
    },
    "domainName": "<url-id>.lambda-url.us-west-2.on.aws",
    "domainPrefix": "<url-id>",
    "http": {
      "method": "POST",
      "path": "/my/path",
      "protocol": "HTTP/1.1",
      "sourceIp": "123.123.123.123",
      "userAgent": "agent"
    },
    "requestId": "id",
    "time": "12/Mar/2020:19:03:58 +0000",
    "timeEpoch": 1583348638390
  },
  "body": "Hello from client!",
  "isBase64Encoded": false
}

Response

{
   "statusCode": 201,
    "headers": {
        "Content-Type": "application/json",
        "My-Custom-Header": "Custom Value"
    },
    "body": "{ \"message\": \"Hello, world!\" }",
    "cookies": [
        "Cookie_1=Value1; Expires=21 Oct 2021 07:48 GMT",
        "Cookie_2=Value2; Max-Age=78000"
    ],
    "isBase64Encoded": false
}

Resources

Typed Lambda handlers by Language

Documention


Last update: 2022-09-13