SSL_set_tlsext_host_name not found in libssl-3-x64.dll. Confirmed by Dependency Walker

[OneBobone]

I believe that I need to set the SNI.

However, SSL_set_tlsext_host_name is not found in libssl-3-x64.dll. Have double checked by Dependency Walker.
Version 3.3 dev from https://slproweb.com/products/Win32OpenSSL.html

The documentation says that it should be present!
What are my options?

Running OpenSSL on Win7 with tls1.2 and new ciphers.
Trying to access a site hosted by aws cloudfront.
Commandline OpenSSL is successful. Have compared wireshark traffic and discovered minimum differences,

My code can access other sites with tls1.2 and new ciphers.

[mattcaswell]

SSL_set_tlsext_host_name is a macro so you would not expect to find it in the dll. It's defined here:

openssl/include/openssl/tls1.h

Lines 289 to 291 in e1fd043

	# define SSL_set_tlsext_host_name(s,name) \
	SSL_ctrl(s,SSL_CTRL_SET_TLSEXT_HOSTNAME,TLSEXT_NAMETYPE_host_name,\
	(void *)name)

As long as you include the openssl/ssl.h header file (which itself includes the openssl/tls1.h file above) then you should be able to use it. The underlying function called in the dll is SSL_ctrl

[OneBobone]

Thank you very much for that clarification!
My code now works. :-)

Maybe a good idea to mark in the documentation which functions are macros?
And their definition.

Cheers!