如何将cookie发送到AWS lamdba

Question

我希望将cookie数据传递到AWS Lambda函数以及从AWS Lambda函数传递cookie数据，而客户端是在浏览器下运行的jQuery AJAX。对于GET方法和POST方法，我都需要这样做。

这是我的代码（不起作用）。 lambda函数在Python 3.6中

用于incrementCookie函数的Lambda函数

from __future__ import print_function
from urllib.request import Request, urlopen
from urllib.parse import unquote
import boto3
import json
import sys

def jpath( obj, path):
  res = obj
  for particle in path.split('.'):
    if res is None:
      break
    if particle in res:
      res = res[particle]
    else:
      res = None
  if res is None:
    res = ''
  return res

def readCookie( event, name):
  value = ''
  for cookie in jpath( event, 'headers.Cookie').split(';'):
    pair = cookie.strip().split('=',1)
    if pair[0].strip() != name:
      continue
    if len(pair) >= 2:
      value = pair[1].strip()
    else:
      value = ''
    break
  return value

def tryInt( value, default):
  if (value is None) or (value == ''):
    return default
  else:
    try:
      return int(value)
    except ValueError:
      return default

def buildResponse( statusCode, bumpLump):
     return {
        'statusCode': statusCode,
        'headers': {
          'Content-Type': 'application/xml',
          'Access-Control-Allow-Origin': 'https://<redacted>.cloudfront.net',
          'Access-Control-Allow-Credentials': 'true',
          'Access-Control-Allow-Methods': 'POST,GET,OPTIONS',
          'Set-Cookie': 'bumpLump=' + str( bumpLump) + '; Secure; Path=/'
          },
        'body': '<bumpLump>' + str( bumpLump) + '</bumpLump>'
        }

def lambda_handler(event, context):
  print(event)
  try:
    bumpLump = tryInt( readCookie( event, 'bumpLump'), 0) + 1
  except:
    bumpLump = 0
  response = buildResponse( 200, bumpLump)
  print(response)
  return response

作为swagger + APIextension导出的API是...

---
swagger: "2.0"
info:
  version: "2018-09-17T12:49:17Z"
  title: "incrementCookie-API"
host: "<redacted>.execute-api.ap-southeast-2.amazonaws.com"
basePath: "/demo-for-stackoverflow"
schemes:
- "https"
paths:
  /incrementCookie:
    options:
      consumes:
      - "application/json"
      produces:
      - "application/json"
      responses:
        200:
          description: "200 response"
          schema:
            $ref: "#/definitions/Empty"
          headers:
            Access-Control-Expose-Headers:
              type: "string"
            Access-Control-Allow-Origin:
              type: "string"
            Access-Control-Allow-Methods:
              type: "string"
            Access-Control-Allow-Credentials:
              type: "string"
            Access-Control-Allow-Headers:
              type: "string"
      x-amazon-apigateway-integration:
        responses:
          default:
            statusCode: "200"
        requestTemplates:
          application/json: "{\"statusCode\": 200}"
        passthroughBehavior: "when_no_match"
        type: "mock"
    x-amazon-apigateway-any-method:
      responses:
        200:
          description: "200 response"
          headers:
            Set-Cookie:
              type: "string"
      x-amazon-apigateway-integration:
        uri: "arn:aws:apigateway:ap-southeast-2:lambda:path/2015-03-31/functions/arn:aws:lambda:ap-southeast-2:<redacted>:function:incrementCookie/invocations"
        responses:
          .*:
            statusCode: "200"
        passthroughBehavior: "when_no_match"
        httpMethod: "POST"
        type: "aws_proxy"
definitions:
  Empty:
    type: "object"
    title: "Empty Schema"

在客户端执行的JavaScript是...

$.ajax('https://<redacted>.execute-api.ap-southeast-2.amazonaws.com/demo-for-stackoverflow/incrementCookie',{
      method: 'GET',
      cache: false,
      dataType: 'xml',
      crossDomain: true,
      xhrFields: {
        withCredentials: true
        },
      error: function( jqXHR, textStatus, errorThrown){
        console.log( errorThrown);  
        },
      success: function( response) {
        console.log( response);  
        }
      })

监控流量，浏览器发送请求...

GET https://<redacted>.execute-api.ap-southeast-2.amazonaws.com/demo-for-stackoverflow/incrementCookie?_=1537182487453 HTTP/1.1
Host: <redacted>.execute-api.ap-southeast-2.amazonaws.com
Connection: keep-alive
Accept: application/xml, text/xml, */*; q=0.01
Origin: https://<redacted>.cloudfront.net
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36
DNT: 1
Referer: https://<redacted>.cloudfront.net/marketplace.html
Accept-Encoding: gzip, deflate, br
Accept-Language: en-US,en;q=0.9

...然后网关/ lambda响应...

HTTP/1.1 200 OK
Date: Mon, 17 Sep 2018 12:38:04 GMT
Content-Type: application/xml
Content-Length: 22
Connection: keep-alive
x-amzn-RequestId: 85a0b8e9-ba76-11e8-b57e-79f6158ed33a
Access-Control-Allow-Origin: https://<redacted>.cloudfront.net
Set-Cookie: bumpLump=1; Secure; Path=/
x-amz-apigw-id: NXX29G80SwMF2nQ=
Access-Control-Allow-Methods: POST,GET,OPTIONS
X-Amzn-Trace-Id: Root=1-5b9fa02c-e6458627603d8fff6cea9b65;Sampled=0
Access-Control-Allow-Credentials: true

<bumpLump>1</bumpLump>

但是没有设置cookie。我可以重复此呼叫，并且号码永远不会增加到2。我在做什么错了？