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automatically set the tls.Config.ServerName if unset (#4032)

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Marten Seemann 2023-08-16 20:54:42 +07:00 • committed by GitHub
parent 4f696569a2
commit ca3842d6c8
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2 changed files with 20 additions and 26 deletions
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30
transport.go
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@ -148,24 +148,15 @@ func (t *Transport) ListenEarly(tlsConf *tls.Config, conf *Config) (*EarlyListen
// Dial dials a new connection to a remote host (not using 0-RTT).
func (t *Transport) Dial(ctx context.Context, addr net.Addr, tlsConf *tls.Config, conf *Config) (Connection, error) {
if err := validateConfig(conf); err != nil {
return nil, err
}
conf = populateConfig(conf)
if err := t.init(t.isSingleUse); err != nil {
return nil, err
}
var onClose func()
if t.isSingleUse {
onClose = func() { t.Close() }
}
tlsConf = tlsConf.Clone()
tlsConf.MinVersion = tls.VersionTLS13
return dial(ctx, newSendConn(t.conn, addr), t.connIDGenerator, t.handlerMap, tlsConf, conf, onClose, false)
return t.dial(ctx, addr, "", tlsConf, conf, false)
}
// DialEarly dials a new connection, attempting to use 0-RTT if possible.
func (t *Transport) DialEarly(ctx context.Context, addr net.Addr, tlsConf *tls.Config, conf *Config) (EarlyConnection, error) {
return t.dial(ctx, addr, "", tlsConf, conf, true)
}
func (t *Transport) dial(ctx context.Context, addr net.Addr, hostname string, tlsConf *tls.Config, conf *Config, use0RTT bool) (EarlyConnection, error) {
if err := validateConfig(conf); err != nil {
return nil, err
}
@ -179,7 +170,16 @@ func (t *Transport) DialEarly(ctx context.Context, addr net.Addr, tlsConf *tls.C
}
tlsConf = tlsConf.Clone()
tlsConf.MinVersion = tls.VersionTLS13
return dial(ctx, newSendConn(t.conn, addr), t.connIDGenerator, t.handlerMap, tlsConf, conf, onClose, true)
// If no ServerName is set, infer the ServerName from the hostname we're connecting to.
if tlsConf.ServerName == "" {
if hostname == "" {
if udpAddr, ok := addr.(*net.UDPAddr); ok {
hostname = udpAddr.IP.String()
}
}
tlsConf.ServerName = hostname
}
return dial(ctx, newSendConn(t.conn, addr), t.connIDGenerator, t.handlerMap, tlsConf, conf, onClose, use0RTT)
}
func (t *Transport) init(allowZeroLengthConnIDs bool) error {