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docs: improve examples even further (#240)
Signed-off-by: Carlos Alexandro Becker <caarlos0@users.noreply.github.com>
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,73 @@ | ||
package main | ||
|
||
import ( | ||
"context" | ||
"errors" | ||
"net" | ||
"os" | ||
"os/signal" | ||
"syscall" | ||
"time" | ||
|
||
"github.com/charmbracelet/log" | ||
"github.com/charmbracelet/ssh" | ||
"github.com/charmbracelet/wish" | ||
"github.com/charmbracelet/wish/logging" | ||
) | ||
|
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const ( | ||
host = "localhost" | ||
port = "23234" | ||
) | ||
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func main() { | ||
srv, err := wish.NewServer( | ||
wish.WithAddress(net.JoinHostPort(host, port)), | ||
wish.WithHostKeyPath(".ssh/id_ed25519"), | ||
wish.WithMiddleware( | ||
func(next ssh.Handler) ssh.Handler { | ||
return func(sess ssh.Session) { | ||
wish.Println(sess, "Hello, world!") | ||
next(sess) | ||
} | ||
}, | ||
logging.Middleware(), | ||
), | ||
) | ||
if err != nil { | ||
log.Error("Could not start server", "error", err) | ||
} | ||
|
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// Before starting our server, we create a channel and listen for some | ||
// common interrupt signals. | ||
done := make(chan os.Signal, 1) | ||
signal.Notify(done, os.Interrupt, syscall.SIGINT, syscall.SIGTERM) | ||
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// We then start the server in a goroutine, as we'll listen for the done | ||
// signal later. | ||
go func() { | ||
log.Info("Starting SSH server", "host", host, "port", port) | ||
if err = srv.ListenAndServe(); err != nil && !errors.Is(err, ssh.ErrServerClosed) { | ||
// We ignore ErrServerClosed because it is expected. | ||
log.Error("Could not start server", "error", err) | ||
done <- nil | ||
} | ||
}() | ||
|
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// Here we wait for the done signal: this can be either an interrupt, or | ||
// the server shutting down for any other reason. | ||
<-done | ||
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// When it arrives, we create a context with a timeout. | ||
ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second) | ||
defer func() { cancel() }() | ||
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// When we start the shutdown, the server will no longer accept new | ||
// connections, but will wait as much as the given context allows for the | ||
// active connections to finish. | ||
// After the timeout, it shuts down anyway. | ||
log.Info("Stopping SSH server") | ||
if err := srv.Shutdown(ctx); err != nil && !errors.Is(err, ssh.ErrServerClosed) { | ||
log.Error("Could not stop server", "error", err) | ||
} | ||
} |
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