Complete initial implementation of transaction relaying.

NetworkOPs.h

@@ -6,22 +6,35 @@
 
 // Operations that clients may wish to perform against the network
 
+class Peer;
+
 class NetworkOPs
 {
 	enum Fault
-	{
+	{ // exceptions these functions can throw
 		IO_ERROR=1,
 		NO_NETWORK=2,
 	};
 
+	enum OperatingMode
+	{ // how we process transactions or account balance requests
+		FAULTED=0,		// we are unable to process requests (not ready or no network)
+		FULL_LOCAL=1,	// we are in full local sync
+		PART_LOCAL=2,	// we can validate remote data but have to request it
+		REMOTE=3		// we have to trust remote nodes
+	};
+
 public:
 
+	// context information
+	OperatingMode getOperatingMode();
+
 	// network information
 	uint64 getNetworkTime();
 	uint32 getCurrentLedgerID();
 
 	// transaction operations
-	Transaction::pointer processTransaction(Transaction::pointer transaction);
+	Transaction::pointer processTransaction(Transaction::pointer transaction, Peer* source=NULL);
 	Transaction::pointer findTransactionByID(const uint256& transactionID);
 	int findTransactionsBySource(std::list<Transaction::pointer>&, const uint160& sourceAccount,
 		uint32 minSeq, uint32 maxSeq);