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v2fly/transport/internet/dialer.go
2016-08-15 10:17:22 +08:00

72 lines
1.7 KiB
Go

package internet
import (
"crypto/tls"
"errors"
"net"
v2net "github.com/v2ray/v2ray-core/common/net"
v2tls "github.com/v2ray/v2ray-core/transport/internet/tls"
)
var (
ErrUnsupportedStreamType = errors.New("Unsupported stream type.")
)
type Dialer func(src v2net.Address, dest v2net.Destination) (Connection, error)
var (
TCPDialer Dialer
KCPDialer Dialer
RawTCPDialer Dialer
UDPDialer Dialer
WSDialer Dialer
)
func Dial(src v2net.Address, dest v2net.Destination, settings *StreamSettings) (Connection, error) {
var connection Connection
var err error
if dest.IsTCP() {
switch {
case settings.IsCapableOf(StreamConnectionTypeTCP):
connection, err = TCPDialer(src, dest)
case settings.IsCapableOf(StreamConnectionTypeKCP):
connection, err = KCPDialer(src, dest)
case settings.IsCapableOf(StreamConnectionTypeWebSocket):
connection, err = WSDialer(src, dest)
/*Warning: Hours wasted: the following item must be last one
internet.StreamConnectionType have a default value of 1,
so the following attempt will catch all.
*/
case settings.IsCapableOf(StreamConnectionTypeRawTCP):
connection, err = RawTCPDialer(src, dest)
default:
return nil, ErrUnsupportedStreamType
}
if err != nil {
return nil, err
}
if settings.Security == StreamSecurityTypeNone {
return connection, nil
}
config := settings.TLSSettings.GetTLSConfig()
if dest.Address().Family().IsDomain() {
config.ServerName = dest.Address().Domain()
}
tlsConn := tls.Client(connection, config)
return v2tls.NewConnection(tlsConn), nil
}
return UDPDialer(src, dest)
}
func DialToDest(src v2net.Address, dest v2net.Destination) (net.Conn, error) {
return effectiveSystemDialer.Dial(src, dest)
}