Files
bitcoin/src
Ava Chow 75353a0163 Merge bitcoin/bitcoin#32326: net: improve the interface around FindNode() and avoid a recursive mutex lock
87e7f37918 doc: clarify peer address in getpeerinfo and addnode RPC help (Vasil Dimov)
2a4450ccbb net: change FindNode() to not return a node and rename it (Vasil Dimov)
4268abae1a net: avoid recursive m_nodes_mutex lock in DisconnectNode() (Vasil Dimov)
3a4d1a25cf net: merge AlreadyConnectedToAddress() and FindNode(CNetAddr) (Vasil Dimov)

Pull request description:

  `CConnman::FindNode()` would lock `m_nodes_mutex`, find the node in `m_nodes`, release the mutex and return the node. The current code is safe but it is a dangerous interface where a caller may end up using the node returned from `FindNode()` without owning `m_nodes_mutex` and without having that node's reference count incremented.

  Change `FindNode()` to return a boolean since all but one of its callers used its return value to check whether a node exists and did not do anything else with the return value.

  Remove a recursive lock on `m_nodes_mutex`.

  Rename `FindNode()` to better describe what it does.

ACKs for top commit:
  achow101:
    ACK 87e7f37918
  furszy:
    Code review ACK 87e7f37918
  hodlinator:
    re-ACK 87e7f37918

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