A conflict comes out in NEO3 if an external node make transaction via a wallet which is opened by consensus node at the same time

[superboyiii]

A conflict comes out in NEO3 if an external node makes transaction via a wallet which is opened by consensus node at the same time. Consensus node shows "An item with the same key has already been added.", like this:

In external node, the tx was created successfully. They're using the same wallet 1.json. The 100 million NEO is need to be claimed from that wallet.

[shargon]

How could be repeated the hash in mempool? I understand that the error was thrown here

neo/neo/Consensus/ConsensusContext.cs

Line 218 in cd99489

Transactions = transactions.ToDictionary(p => p.Hash);

[superboyiii]

@shargon Yes, you're right. There're two same transactions in the dictionary when ConsensusPayload MakePrepareRequest().

[superboyiii]

Seems it's a matter of SimplePolicy. Now I removed it, cli works. I will close this PR since SimplePolicy was already removed.