Convert the attached Python serial upload script to C or C++

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I have worked with Multiplatform ANSI C/C++ in the past, i can develop this functionality using transfer protocols from sftp, ftp, http or even raw tcp transfer and if you are concerned about security I can use cryptography to protect the data transferred. I can deliver to you the complete automake project so you will be able to compile on windows (cygwin), mac and linux. In fact i will be using mac while development are in progress. I'm using freelancer's mobile app so I imagine that your budget is hourly based. Best regards, Edgar.