This is a follow-up to PR #5664 that further improves the specificity of logging for refused peer connections. The previous changes did not account for several key scenarios, leading to potentially misleading log messages.
It addresses the following
- Inbound Disabled: Connections are now explicitly logged as rejected when the server is not configured to accept inbound peers. Previously, this was logged as the server being "full," which was technically correct but lacked diagnostic clarity.
- Duplicate Connections: The logging now distinguishes between two types of duplicate connection refusals:
- When a peer with the same node public key is already connected (duplicate connection).
- When a connection is rejected because the limit for connections from a single IP address has been reached.
These changes provide more accurate and actionable diagnostic information when analyzing peer connection behavior.
This change fixes the suite names all around the test files, to make them match to the folder name in which this test files are located. Also, the RCL test files are relocated to the consensus folder, because they are testing consensus functionality.
The codebase is filled with includes that are unused, and which thus can be removed. At the same time, the files often do not include all headers that contain the definitions used in those files. This change uses clang-format and clang-tidy to clean up the includes, with minor manual intervention to ensure the code compiles on all platforms.
We do not currently enforce that incoming peer connection does not have
remote_endpoint which is already used (either by incoming or outgoing
connection), hence already stored in slots_. If we happen to receive a
connection from such a duplicate remote_endpoint, it will eventually result in a
crash (when disconnecting) or weird behavior (when updating slot state), as a
result of an apparently matching remote_endpoint in slots_ being used by a
different connection.
This commit replaces the `peers_max` configuration element which had
a predetermined split between incoming and outgoing connections with
two new configuration options, `peers_in_max` and `peers_out_max`,
which server operators can use to explicitly control the number of
incoming and outgoing peer slots.
