[DO NOT MERGE] Always use Ruby IO

Let's see what will break with this.

Author: rhenium

ext/openssl/ossl_ssl.c

@@ -1560,6 +1560,8 @@ peeraddr_ip_str(VALUE self)
 static int
 is_real_socket(VALUE io)
 {
+    // FIXME: DO NOT MERGE
+    return 0;
     return RB_TYPE_P(io, T_FILE);
 }
 

test/openssl/test_ssl.rb

@@ -1611,7 +1611,12 @@ def test_options_disable_versions
       # Client only supports TLS 1.3
       ctx2 = OpenSSL::SSL::SSLContext.new
       ctx2.min_version = ctx2.max_version = OpenSSL::SSL::TLS1_3_VERSION
-      assert_nothing_raised { server_connect(port, ctx2) { } }
+      assert_nothing_raised {
+        server_connect(port, ctx2) { |ssl|
+          # Ensure SSL_accept() finishes successfully
+          ssl.puts("abc"); ssl.gets
+        }
+      }
     }
 
     # Server only supports TLS 1.2