S3 upload without presigned URL's

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Hello @MuneebAWS

I’ve got problem with uploading without presigned URL. Can you suggest any guide how upload to S3 server using only device certificate and key? I succesfully tried HTTP_Mutual_Auth demo with my device credentials, then i modify this example to use PUT method and without presigned URL on both ports 8443 and 443 but nothing uploads on desired bucket.

Thanks for help