plugin failed to exit gracefully

[FrontiniFederico]

Hello! I tried to build the basic example and while it does seem to work I sometimes get these log messages:

2025-01-16T11:49:05.997+0100 [DEBUG] plugin: starting plugin: path=./plugin/greeter.exe args=["./plugin/greeter.exe"] 2025-01-16T11:49:06.069+0100 [DEBUG] plugin: plugin started: path=./plugin/greeter.exe pid=17972 2025-01-16T11:49:06.070+0100 [DEBUG] plugin: waiting for RPC address: plugin=./plugin/greeter.exe 2025-01-16T11:49:06.147+0100 [DEBUG] plugin.greeter.exe: message from plugin: foo=bar timestamp="2025-01-16T11:49:06.087+0100" 2025-01-16T11:49:06.150+0100 [DEBUG] plugin: using plugin: version=1 2025-01-16T11:49:06.150+0100 [DEBUG] plugin.greeter.exe: plugin address: address=127.0.0.1:10000 network=tcp timestamp="2025-01-16T11:49:06.149+0100" 2025-01-16T11:49:06.153+0100 [DEBUG] plugin.greeter.exe: message from GreeterHello.Greet: timestamp="2025-01-16T11:49:06.153+0100" Hello! 2025-01-16T11:49:06.155+0100 [DEBUG] plugin.greeter.exe: 2025/01/16 11:49:06 [DEBUG] plugin: plugin server: accept tcp 127.0.0.1:10000: use of closed network connection 2025-01-16T11:49:06.158+0100 [INFO] plugin: plugin process exited: plugin=./plugin/greeter.exe id=17972 2025/01/16 11:49:06 [ERR] yamux: Failed to read stream data: read tcp 127.0.0.1:50460->127.0.0.1:10000: wsarecv: An existing connection was forcibly closed by the remote host. 2025/01/16 11:49:06 [ERR] yamux: Failed to write header: write tcp 127.0.0.1:50460->127.0.0.1:10000: use of closed network connection 2025-01-16T11:49:06.160+0100 [WARN] plugin: error closing client during Kill: err="unexpected EOF" 2025-01-16T11:49:06.160+0100 [WARN] plugin: plugin failed to exit gracefully 2025-01-16T11:49:06.161+0100 [DEBUG] plugin: error killing plugin: error="invalid argument"

It does not happen every time and the warnings are not exactly the same each time either:

2025-01-16T11:42:48.441+0100 [DEBUG] plugin: starting plugin: path=./plugin/greeter.exe args=["./plugin/greeter.exe"] 2025-01-16T11:42:48.513+0100 [DEBUG] plugin: plugin started: path=./plugin/greeter.exe pid=42576 2025-01-16T11:42:48.513+0100 [DEBUG] plugin: waiting for RPC address: plugin=./plugin/greeter.exe 2025-01-16T11:42:48.591+0100 [DEBUG] plugin.greeter.exe: message from plugin: foo=bar timestamp="2025-01-16T11:42:48.530+0100" 2025-01-16T11:42:48.594+0100 [DEBUG] plugin.greeter.exe: plugin address: address=127.0.0.1:10000 network=tcp timestamp="2025-01-16T11:42:48.594+0100" ar timestamp="2025-01-16T11:42:51.843+0100" 2025-01-16T11:42:51.914+0100 [DEBUG] plugin: using plugin: version=1 2025-01-16T11:42:51.914+0100 [DEBUG] plugin.greeter.exe: plugin address: address=127.0.0.1:10000 network=tcp timestamp="2025-01-16T11:42:51.913+0100" 2025-01-16T11:42:51.918+0100 [DEBUG] plugin.greeter.exe: message from GreeterHello.Greet: timestamp="2025-01-16T11:42:51.918+0100" Hello! 2025-01-16T11:42:51.919+0100 [DEBUG] plugin.greeter.exe: 2025/01/16 11:42:51 [DEBUG] plugin: plugin server: accept tcp 127.0.0.1:10000: use of closed network connection 2025-01-16T11:42:51.921+0100 [WARN] plugin: error closing client during Kill: err="unexpected EOF" 2025-01-16T11:42:51.921+0100 [WARN] plugin: plugin failed to exit gracefully 2025-01-16T11:42:51.922+0100 [DEBUG] plugin: error killing plugin: error="invalid argument" 2025-01-16T11:42:51.922+0100 [INFO] plugin: plugin process exited: plugin=./plugin/greeter.exe id=29736

Since it only happens sporadically I'm a bit puzzled on why this is happening and if it's something that might cause issues later on.

Thank you for your time!