Error in sending Python API request from AWS Lambda python function

Question

I am trying send a POST request from AWS python lambda function but getting following error while sending:

[ERROR] ConnectionError: HTTPConnectionPool(host= ********************s3-website.ap-south-1.amazonaws.com', port=80): Max retries exceeded with url: / (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f69fdfbda90>: Failed to establish a new connection: [Errno 110] Connection timed out')) Traceback (most recent call last):

![Response]

I tried with the following code:

import json
import uuid
import datetime
import re
import base64
import requests
import httpx
import asyncio
def lambda_handler(event,context):

    INVENTORY_CP_OPERATION_URL="************.s3-website.ap-south- 
                 1.amazonaws.com/"
    message={
       "email":"*******@********.com",
       "password":"123456"
        }
    result=requests.post(**************,json=message)
    return "success".

Is your AWS Lambda function connected to a VPC? If so, is there a particular reason for doing so? If not, disconnect the Lambda function from the VPC and try again. Let us know what happens. — John Rotenstein
– John Rotenstein, Commented Jul 19, 2022 at 7:18

John Rotenstein · Accepted Answer · 2022-07-19 07:49:31Z

2

Given your Connection timed out, it would seem that your AWS Lambda function is having difficulty connecting to the Internet.

When an AWS Lambda function is NOT connected to a VPC, it has direct access to the Internet.

However, when a Lambda function IS connected to a VPC, it only has Internet access if the Lambda function is connected to a private subnet and there is a NAT Gateway in a public subnet.

Therefore, if the function does not require access to any resources in a VPC (eg Amazon RDS databases), then it is best to disconnect it from the VPC.

answered Jul 19, 2022 at 7:49

John Rotenstein

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1 Comment

Rambo Over a year ago

Yes, we are connecting VPC to the subnets still not getting internet access.

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