More SSL stuff (still doesn't work :/).

source/mijin/net/openssl_wrappers.hpp

@@ -257,6 +257,34 @@ public:
         return result;
     }
 
+    [[nodiscard]]
+    int getReadRequest() const noexcept
+    {
+        return BIO_get_read_request(handle_);
+    }
+
+    [[nodiscard]]
+    int getWriteGuarantee() const noexcept
+    {
+        return BIO_get_write_guarantee(handle_);
+    }
+
+    [[nodiscard]]
+    int getWritePending() const noexcept
+    {
+        return BIO_wpending(handle_);
+    }
+
+    Error flush() const noexcept
+    {
+        ERR_clear_error();
+        if (!BIO_flush(handle_))
+        {
+            return Error::current();
+        }
+        return {};
+    }
+
     static void upReferences(BIO* handle) noexcept
     {
         BIO_up_ref(handle);
@@ -371,6 +399,12 @@ public:
         return result;
     }
 
+    [[nodiscard]]
+    int pending() const noexcept
+    {
+        return SSL_pending(handle_);
+    }
+
     static void upReferences(SSL* handle) noexcept
     {
         SSL_up_ref(handle);