Hey Rob,

> #if OPENSSL_VERSION_NUMBER >= 0x10002000L
> // OpenSSL 1.0.2 lets us do this properly
> Call SSL_CTX_add1_chain_cert(ssl->ctx, x509)
> #else
> If (number of ssl_certificate directives > 1)
> // Put this intermediate in the "trusted certificates store"
> Call X509_STORE_add_cert(ssl->ctx->cert_store, x509)
> Else
> // This is what Nginx does currently
> Call SSL_CTX_add_extra_chain_cert(ssl->ctx, x509)
> End If
> #endif

For the consistency sake, you should be using
SSL_CTX_add0_chain_cert(), since it doesn't increase OpenSSL's
internal reference count, same as SSL_CTX_add_extra_chain_cert()... If
you want use SSL_CTX_add1_chain_cert() then you should free x509
afterwards.

Best regards,
Piotr Sikora

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