Properly close stream in interactive mode.

CHANGELOG.md

@@ -1,6 +1,8 @@
 # Changelog
 
 ## UNRELEASED
+### Changed
+- Properly close stream if `Ctrl+C` is pressed in interactive mode.
 
 ## [v0.8.4] 2024-03-09
 ### Changed

main.go

@@ -15,6 +15,7 @@ import (
 	"net"
 	"os"
 	"os/signal"
+	"runtime"
 	"strings"
 	"time"
 
@@ -466,17 +467,20 @@ func main() {
 		signal.Notify(c, os.Interrupt)
 		go func() {
 			for range c {
-				cancel()
-				client.Close()
-				os.Exit(0)
+				closeAndExit(client, cancel, nil)
 			}
 		}()
 		for {
 			message, err = reader.ReadString('\n')
-			message = strings.TrimSuffix(message, "\n")
-			if err != nil {
-				closeAndExit(client, cancel, errors.New("failed to read from stdin"))
+			select {
+			case <-ctx.Done():
+				return
+			default:
+				if err != nil {
+					closeAndExit(client, cancel, errors.New("failed to read from stdin"))
+				}
 			}
+			message = strings.TrimSuffix(message, "\n")
 
 			// Remove invalid code points.
 			message = validUTF8(message)