http_proxy.py

import urllib3
import json

def lambda_handler(event, context):
    
    http = urllib3.PoolManager()
    
    print(event)

    r = http.request('POST', 'http://ip-172-31-72-37.ec2.internal/upload',
                 headers=event['headers'],
                 body=event['body'])
                 
    print(r.status)
    print(r.headers)
    print(r.data)
    
    
    return {
        'statusCode': 200,
        'body': json.dumps(json.loads(r.data)),
        'headers': dict(r.headers)
    }