(feat):add private variant in tx origin (#4059)

Co-authored-by: Matthias Seitz <matthias.seitz@outlook.de>

crates/transaction-pool/src/noop.rs

@@ -188,7 +188,11 @@ impl<T: PoolTransaction> TransactionValidator for MockTransactionValidator<T> {
             balance: Default::default(),
             state_nonce: 0,
             transaction,
-            propagate: if origin.is_local() { self.propagate_local } else { true },
+            propagate: match origin {
+                TransactionOrigin::External => true,
+                TransactionOrigin::Local => self.propagate_local,
+                TransactionOrigin::Private => false,
+            },
         }
     }
 }

crates/transaction-pool/src/traits.rs

@@ -404,6 +404,11 @@ pub enum TransactionOrigin {
     /// This is usually considered an "untrusted" source, for example received from another in the
     /// network.
     External,
+    /// Transaction is originated locally and is intended to remain private.
+    ///
+    /// This type of transaction should not be propagated to the network. It's meant for
+    /// private usage within the local node only.   
+    Private,
 }
 
 // === impl TransactionOrigin ===

crates/transaction-pool/src/validate/eth.rs

@@ -461,8 +461,11 @@ where
             state_nonce: account.nonce,
             transaction,
             // by this point assume all external transactions should be propagated
-            propagate: matches!(origin, TransactionOrigin::External) ||
-                self.propagate_local_transactions,
+            propagate: match origin {
+                TransactionOrigin::External => true,
+                TransactionOrigin::Local => self.propagate_local_transactions,
+                TransactionOrigin::Private => false,
+            },
         }
     }
 }