multiprocess: Add interfaces::Node::broadCastTransaction method

This fixes a null pointer crash in the bitcoin-gui PSBT dialog. The
bitcoin-gui interfaces::Node object has a null NodeContext pointer, and
can't broadcast transactions directly. It needs to broadcast
transactions through the bitcoin-node process instead.

1 files changed, 4 insertions, 0 deletions

diff --git a/src/interfaces/node.h b/src/interfaces/node.h
index 34fdde3774..12f2fce22b 100644
--- a/src/interfaces/node.h
+++ b/src/interfaces/node.h
@@ -31,6 +31,7 @@ class RPCTimerInterface;
 class UniValue;
 class proxyType;
 enum class SynchronizationState;
+enum class TransactionError;
 struct CNodeStateStats;
 struct NodeContext;
 struct bilingual_str;
@@ -174,6 +175,9 @@ public:
     //! Get unspent outputs associated with a transaction.
     virtual bool getUnspentOutput(const COutPoint& output, Coin& coin) = 0;
 
+    //! Broadcast transaction.
+    virtual TransactionError broadcastTransaction(CTransactionRef tx, CAmount max_tx_fee, std::string& err_string) = 0;
+
     //! Get wallet client.
     virtual WalletClient& walletClient() = 0;