upload video to aws S3

Question

I am trying to upload a video to an S3 bucket using the API interface, I followed the presigned URL procedure, here is my lambda function that returns the presigned URL (it returns the presigned url correctly - seemingly):

import json
import base64
import boto3
import uuid
BUCKET_NAME = 'redacted-bucket-instance'

def lambda_handler(event, context):
    actionId = uuid.uuid4()
    file_path = "video_uploads/" + str(actionId) + ".mp4"
    s3 = boto3.client('s3')
    s3Params = {
        "Bucket": BUCKET_NAME,
        "Key": file_path,
        "ContentType": 'video/mp4',
        "ACL": 'public-read'
    }
    try:
        s3_response = s3.generate_presigned_url('put_object', Params=s3Params, ExpiresIn=3600, HttpMethod="PUT")
    except Exception as e:
        raise IOError(e)
    return {
        'statusCode': 200,
        'body': {
            'file_path': file_path,
            'url': s3_response
        }
    }

when I try to upload an mp4 video with curl like this for ex: curl -X PUT -F 'data=@ch01_00000100055009702.mp4' https://redacted-bucket-instance.s3.amazonaws.com//video_uploads/a845a97f-a218-4815-a836-376e498a4334.mp4?AWSAccessKeyId=ASIAWZPXMJR5V7GEHUJJ&Signature=zDsdfsdfqsdfD&content-type=video%2Fmp4&x-amz-acl=public-read&etc

or

curl -X PUT --data-binary '@ch01_00000100055009702.mp4' https://redacted-bucket-instance.s3.amazonaws.com//video_uploads/a845a97f-a218-4815-a836-376e498a4334.mp4?AWSAccessKeyId=ASIAWZPXMJR5V7GEHUJJ&Signature=zDsdfsdfqsdfD&content-type=video%2Fmp4&x-amz-acl=public-read&etc

in both cases, the terminal closes...whatcould I be doing wrong here?

(both url are not the ones received of course but just there for demonstration)

Edit

Adding quotes for the url prevented the terminal from closing and gave a reponse.(I'm guessing some characters needed to be escaped)

Now I'm getting this error:

<Error><Code>SignatureDoesNotMatch</Code><Message>The request signature we calculated does not match the signature you provided. Check your key and signing method.</Message><AWSAccessKeyId>ASIAWZPXMJR54PMEJVPQ</AWSAccessKeyId>

Should I add headers in the request for it to work?

(I renewed the presigned url to make sure it's valid during teseting)

What do you mean by "the terminal closes"? Don't you see any output from the curl command? Have you tried running curl with the `-v` option? It should show more information about the request and response. — Hernán Alarcón, Aug 10 '20 at 19:41
@HernánAlarcón adding quotes to the URL made it work. I added an edit to the question with the error I got as a result — John Doe, Aug 11 '20 at 00:22
Why does the error message shows a different AWS Access Key Id from the one you are using in your curl commands? — Hernán Alarcón, Aug 11 '20 at 00:37
@HernánAlarcón I think it's because I changed the lambda function a bit(trying to fix it googling people having the same issue: changed the Key to a constant string and removed ACL — John Doe, Aug 11 '20 at 03:02
I was reading this https://stackoverflow.com/questions/30518899/aws-s3-how-to-fix-the-request-signature-we-calculated-does-not-match-the-sign/60456892#60456892 and thought one of them might cause the issue — John Doe, Aug 11 '20 at 03:07

score 2 · Accepted Answer · answered Aug 11 '20 at 03:24

2

The solution for me was to first add quotes for the url (as mentioned in the edit) and also add a Content-Type header

-H "Content-Type:video/mp4"

no space between ':' and video or it will lead to an error as well (at least in my case)

answered Aug 11 '20 at 03:24

John Doe

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upload video to aws S3

1 Answers1