Merge #14811: Mining: Enforce that segwit option must be set in GBT

d2ce315fbf [docs] add release note for change to GBT (John Newbery)
0025c9eae4 [mining] segwit option must be set in GBT (John Newbery)

Pull request description:

  Calling getblocktemplate without the segwit rule specified is most
  likely a client error, since it results in lower fees for the miner.
  Prevent this client error by failing getblocktemplate if called without
  the segwit rule specified.

  Of the previous 1000 blocks (measured at block [551591 (hash 0x...173c811)](https://blockstream.info/block/000000000000000000173c811e79858808abc3216af607035973f002bef60a7a)), 991 included segwit transactions.

Tree-SHA512: 7933b073d72683c9ab9318db46a085ec19a56a14937945c73f783ac7656887619a86b74db0bdfcb8121df44f63a1d6a6fb19e98505b2a26a6a8a6e768e442fee

1 files changed, 2 insertions, 2 deletions

diff --git a/test/functional/mining_prioritisetransaction.py b/test/functional/mining_prioritisetransaction.py
index da16bfbbfb..ca4b621a78 100755
--- a/test/functional/mining_prioritisetransaction.py
+++ b/test/functional/mining_prioritisetransaction.py
@@ -142,10 +142,10 @@ class PrioritiseTransactionTest(BitcoinTestFramework):
         # getblocktemplate to (eventually) return a new block.
         mock_time = int(time.time())
         self.nodes[0].setmocktime(mock_time)
-        template = self.nodes[0].getblocktemplate()
+        template = self.nodes[0].getblocktemplate({'rules': ['segwit']})
         self.nodes[0].prioritisetransaction(txid=tx_id, fee_delta=-int(self.relayfee*COIN))
         self.nodes[0].setmocktime(mock_time+10)
-        new_template = self.nodes[0].getblocktemplate()
+        new_template = self.nodes[0].getblocktemplate({'rules': ['segwit']})
 
         assert(template != new_template)