Search OpenSSL: Code Examples C++?

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OpenSSL

Good afternoon, it became necessary to insert 2 way ssl auth into my program. But that’s not the point. I ran into the problem that the documentation of functions in open ssl in the format of a reference book and, moreover, is rather so-so. I hoped that there would be a low-level API and I would be happy, but it didn’t work out. There are practically no examples on the github itself, and those that are completely childish. Perhaps someone came across a project where opensl was really used in programming (with open source codes ofc).