hello-world-dll | a DLL that will show a MessageBox with the message | DevOps library

I want to download a file to memory using curl.
I am currently using this and it looks like it works to a certain extent but corrupts my file.
I have used sigbench and it is around 20% different (while comparing original and downloaded)

The file I want to download is a binary so it won't work after it's modified.
I am currently testing with the x86 version of this. original binary downloaded binary
This is the code I am using to write it to a file:
ofstream stream = ofstream("test.dll"); stream.write(chunk.memory, chunk.size);