S3 PutObject presigned url ContentType ignored

[raress96]

Using version 3.2.6 from the Symfony Bundle.
I have the following code in my app:

`$cmd = $this->s3client->getCommand('PutObject', [
'Bucket' => 'myBucket',
'Key' => 'inputs/' . $movie->getId(),
'ACL' => 'private',
'ContentType' => 'video/mp4',
]);

    $request = $this->s3client->createPresignedRequest($cmd, '+30 minutes');

    $movie->setSignedUrl((string)$request->getUri());`

The uri generated is not correct because it does not include the Content-Type header at all so I am able to upload any type of file using this url.The X-Amz-SignedHeaders part of the url only contains the host header but not the content type or other headers.

[kstich]

The 'content-type' header is not signed because signing it would potentially cause a signature mismatch when sending a request through a proxy or if modified at the HTTP client level.

[raress96]

So how can I then restrict the ContentType of files that a user can upload to my S3 bucket?

There needs to be some sort of way to only allow a user to only upload video files for example.

[kstich]

S3 does not restrict the ContentType for you. The 'content-type' header is used to describe the contents and is attached to the object as metadata. If you wish to restrict the content uploaded, you'd have to perform the restriction in your application.

[vamsideepak]

my problem is related to this . i mentioned contentType:'video/mp4' and uploading videos to s3 bucket after that getting that video urls those are working in web and android but not in safari can anyone tell me.
note: uploading video webm format.
var pet_signed_url = s3.getSignedUrl('putObject', {
Bucket: AWSConfig.BUCKET_NAME,
Key: pet_vedio_key,
ContentType: 'video/mp4',
Expires: parseInt(AWSConfig.PROFILE_VIDEO_EXPIRATION_TIME)

})