a0b604c166 [tests] skip rpc_zmq functional test when python3 zmq lib is not present (James O'Beirne)
Pull request description:
As noted in https://github.com/bitcoin/bitcoin/pull/13570/files#r201715904, the `rpc_zmq` functional test should be skipped when the `zmq` python3 package is not installed. This is breaking https://bitcoinperf.com benchmarks at the moment.
Tree-SHA512: ab519ae717f4b7a282640cf0389651723fdc108990aeb9852e8b9e96d61fa1ded2461717ae31558b37ff8401a5b1ccc41f4e858e402b8c3d98563d962599767a
161e8d40a4e4c0e701b6c8142b8dcacf2190545e RPC: Add new getzmqnotifications method. (Daniel Kraft)
caac39b0ace38aa088d88c1a5a9a9dbb4d2e893f Make ZMQ notification interface instance global. (Daniel Kraft)
Pull request description:
This adds a new RPC method `getzmqnotifications`, which returns information about all active ZMQ notification endpoints. This is useful for software that layers on top of bitcoind, so it can verify that ZeroMQ is enabled and also figure out where it should listen.
See #13526.
Tree-SHA512: edce722925741c84ddbf7b3a879fc9db1907e5269d0d97138fe724035d93ee541c2118c24fa92f4197403f380d0e25c2fda5ca6c62d526792ea749cf527a99a0
