Merge #19070: p2p: Signal support for compact block filters with NODE_COMPACT_FILTERS

f5c003d3ea [test] Add test for NODE_COMPACT_FILTER. (Jim Posen)
132b30d9c8 [net] Signal NODE_COMPACT_FILTERS if we're serving compact filters. (Jim Posen)
b3fbc94d4f Apply cfilters review fixups (John Newbery)

Pull request description:

  If -peerblockfilters is configured, signal the `NODE_COMPACT_FILTERS` service bit to indicate that we are able to serve compact block filters, headers and checkpoints.

ACKs for top commit:
  MarcoFalke:
    re-review and Concept ACK f5c003d3ea
  fjahr:
    Code review ACK f5c003d3ea
  clarkmoody:
    Concept ACK f5c003d3ea
  ariard:
    Concept and Code Review ACK f5c003d
  jonatack:
    ACK f5c003d3e

Tree-SHA512: 34d1c153530a0e55d09046fe548c9dc37344b5d6d50e00af1b4e1de1e7b49de770fca8471346a17c151de9fe164776296bb3dd5af331977f0c3ef1e6fc906f85

test/functional/p2p_blockfilters.py

@@ -4,12 +4,13 @@
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 """Tests NODE_COMPACT_FILTERS (BIP 157/158).
 
-Tests that a node configured with -blockfilterindex and -peerblockfilters can serve
-cfheaders and cfcheckpts.
+Tests that a node configured with -blockfilterindex and -peerblockfilters signals
+NODE_COMPACT_FILTERS and can serve cfilters, cfheaders and cfcheckpts.
 """
 
 from test_framework.messages import (
     FILTER_TYPE_BASIC,
+    NODE_COMPACT_FILTERS,
     hash256,
     msg_getcfcheckpt,
     msg_getcfheaders,
@@ -70,6 +71,14 @@ class CompactFiltersTest(BitcoinTestFramework):
         self.nodes[1].generate(1001)
         wait_until(lambda: self.nodes[1].getblockcount() == 2000)
 
+        # Check that nodes have signalled NODE_COMPACT_FILTERS correctly.
+        assert node0.nServices & NODE_COMPACT_FILTERS != 0
+        assert node1.nServices & NODE_COMPACT_FILTERS == 0
+
+        # Check that the localservices is as expected.
+        assert int(self.nodes[0].getnetworkinfo()['localservices'], 16) & NODE_COMPACT_FILTERS != 0
+        assert int(self.nodes[1].getnetworkinfo()['localservices'], 16) & NODE_COMPACT_FILTERS == 0
+
         self.log.info("get cfcheckpt on chain to be re-orged out.")
         request = msg_getcfcheckpt(
             filter_type=FILTER_TYPE_BASIC,

test/functional/test_framework/messages.py

@@ -53,6 +53,7 @@ NODE_NETWORK = (1 << 0)
 NODE_GETUTXO = (1 << 1)
 NODE_BLOOM = (1 << 2)
 NODE_WITNESS = (1 << 3)
+NODE_COMPACT_FILTERS = (1 << 6)
 NODE_NETWORK_LIMITED = (1 << 10)
 
 MSG_TX = 1