commit b6fbac7

Fix segmentation fault when the server is down

 1@@ -161,21 +161,25 @@ func (app *App) connect() {
 2 
 3 func (app *App) tryConnect() (err error) {
 4 	addr := app.cfg.Addr
 5-	serverName := app.cfg.Addr
 6-	if i := strings.IndexByte(app.cfg.Addr, ':'); i >= 0 {
 7-		serverName = app.cfg.Addr[:i]
 8-	} else {
 9-		addr = app.cfg.Addr + ":6697"
10+	host, port, err := net.SplitHostPort(addr)
11+	if err != nil {
12+		return err
13+	}
14+	if port == "" {
15+		if app.cfg.NoTLS {
16+			port = "6667"
17+		} else {
18+			port = "6697"
19+		}
20 	}
21 
22-	peerAddr, err := net.ResolveTCPAddr("tcp", addr)
23+	peerAddr, err := net.ResolveTCPAddr("tcp", net.JoinHostPort(host, port))
24 	if err != nil {
25 		return
26 	}
27 
28 	tcpConn, err := net.DialTCP("tcp", nil, peerAddr)
29 	if err != nil {
30-		tcpConn.Close()
31 		return
32 	}
33 	if err = tcpConn.SetKeepAlivePeriod(1 * time.Minute); err != nil {
34@@ -190,7 +194,8 @@ func (app *App) tryConnect() (err error) {
35 	var conn net.Conn = tcpConn
36 	if !app.cfg.NoTLS {
37 		conn = tls.Client(conn, &tls.Config{
38-			ServerName: serverName,
39+			ServerName: host,
40+			NextProtos: []string{"irc"},
41 		})
42 	}
43