After a rustls function returns an error, you may call this to get a pointer to a buffer containing a detailed error message. The contents of the error buffer will be out_n bytes long, UTF-8 encoded, and not NUL-terminated.
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After a rustls function returns an error, you may call this to get a pointer to a buffer containing a detailed error message. The contents of the error buffer will be out_n bytes long, UTF-8 encoded, and not NUL-terminated.