SSL_CTX_use_certificate
ok = SSL_CTX_use_certificate(ssl_ctx, cert) > 0;
if (SSL_CTX_use_certificate(ctx, cert) <= 0) {
ret = SSL_CTX_use_certificate(ctx, cert);
ret = SSL_CTX_use_certificate(ctx, cert);
ret = SSL_CTX_use_certificate(ctx, cert);
ret = SSL_CTX_use_certificate(ctx, cert);
ret = SSL_CTX_use_certificate(ctx, cert);
ret = SSL_CTX_use_certificate(ctx, cert);
__owur int SSL_CTX_use_certificate(SSL_CTX *ctx, X509 *x);
ret = SSL_CTX_use_certificate(ctx, x);
ret = SSL_CTX_use_certificate(ctx, x);
ret = SSL_CTX_use_certificate(ctx, x);
SSL_CTX_use_certificate(srv, c->cert);