How to Interrupt a Goroutine Executing (*TCPListener) Accept?

Interrupting a Goroutine Executing (*TCPListener) Accept

When developing TCP servers in Go, it's crucial to handle server shutdown gracefully. This includes interrupting any goroutine executing the (*TCPListener) Accept method. This method blocks until a client establishes a connection, making it difficult to terminate the server cleanly.

To interrupt the Accept goroutine, utilize the Close method of the net.Listener object obtained from the net.Listen(...) call. Here's how it works:

1. Close the Listener: Call the Close method on the net.Listener to signal that the server is no longer accepting connections. This action will return any Accept goroutine that is currently blocked.
2. Return from the Goroutine: Within the Accept goroutine, handle the interruption by returning from the function. This will free up the goroutine and allow it to terminate.

By implementing these steps, you can effectively interrupt the Accept goroutine and ensure a clean server shutdown.

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