OpenSSL and Win32 SSL API :: SSL/TLS
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Hello. I am designing an application that requires the support of SSL/TLS layer socket transfer. I would like to know what is the most extensible solution. - OpenSSL - Win32 SSL API The Win32 SSL API is quicker in terms of implementation. OpenSSL requires the use and in-depth knowledge of how the library handles I/O. My primary concern is with non-blocking I/O model. Part of the design includes an OVERLAPPED I/O model via winsock. I have no problem blending Win32 SSL API with the current OVERLAPPED I/O. However, OpenSSL is somewhat different. Here is what OpenSSL design could end up. - Winsock connect - Associate socket to OpenSSL layer (global context) - OpenSSL connect - sent/recv via OpenSSL API OpenSSL does support an event callback interface. However, is its send and receive API blocking or non-blocking? How will it affect the winsock OVERLAPPED layer? In other words, if there is incoming data, will OpenSSL handles the callback or will winsock handle the callback? Thanks, Kuphryn