examples/chat: Various fixes

examples/chat/client/main.go

@@ -1,9 +1,11 @@
 package main
 
 import "os"
+import "io"
 import "fmt"
 import "time"
 import "bufio"
+import "errors"
 import "context"
 import "crypto/tls"
 import "git.tebibyte.media/sashakoshka/hopp"
@@ -22,6 +24,7 @@ func main() {
 	}
 	trans, err := join(address, room, nickname)
 	handleErr(1, err)
+	fmt.Fprintf(os.Stdout, "(i) connected to %s/%s\n", address, room)
 	go func() {
 		reader := bufio.NewReader(os.Stdin)
 		for {
@@ -32,7 +35,12 @@ func main() {
 	}()
 	for {
 		message, _, err := chat.Receive(trans)
+		if err != nil {
+			if !errors.Is(err, io.EOF) {
 				handleErr(1, err)
+			}
+			break
+		}
 		switch message := message.(type) {
 		case *chat.MessageChat:
 			fmt.Fprintf(os.Stdout, "%s: %s\n", message.Nickname, message.Content)
@@ -42,6 +50,7 @@ func main() {
 			fmt.Fprintf(os.Stdout, "(i) %s left the room\n", message.Nickname)
 		}
 	}
+	fmt.Fprintf(os.Stdout, "(i) disconnected\n")
 }
 
 func join(address string, room string, nickname string) (hopp.Trans, error) {

examples/chat/server/main.go

@@ -1,6 +1,7 @@
 package main
 
 import "os"
+import "io"
 import "fmt"
 import "log"
 import "errors"
@@ -48,7 +49,7 @@ func host(address string, certPath, keyPath string) error {
 
 type client struct {
 	conn     hopp.Conn
-	nickname hopp.Option[string]
+	nickname string
 	rooms    usync.RWMonitor[map[string] hopp.Trans]
 }
 
@@ -58,13 +59,13 @@ func (this *client) run() {
 	defer this.conn.Close()
 
 	for {
-		log.Println("accepting transaction")
 		trans, err := this.conn.AcceptTrans()
 		if err != nil {
+			if !errors.Is(err, io.EOF) {
 				log.Printf("XXX %v failed: %v", this.conn.RemoteAddr(), err)
+			}
 			return
 		}
-		log.Println("accepted transaction")
 		go this.runTrans(trans)
 	}
 }
@@ -111,7 +112,7 @@ func (this *client) transTalk(trans hopp.Trans, initial *chat.MessageJoin) error
 }
 
 func (this *client) handleMessageChat(trans hopp.Trans, room string, message *chat.MessageChat) error {
-	log.Println("(). %s #%s: %s", this.nickname, room, message.Content)
+	log.Printf("(). %s #%s: %s", this.nickname, room, message.Content)
 	clients, done := clients.RBorrow()
 	defer done()
 	for client := range clients {