Add client package

client/direct.go

@@ -0,0 +1,29 @@
+package client
+
+import (
+	"io"
+	"net"
+
+	"github.com/juju/errors"
+
+	"github.com/9seconds/mtg/config"
+	"github.com/9seconds/mtg/obfuscated2"
+	"github.com/9seconds/mtg/wrappers"
+)
+
+func DirectInit(conn net.Conn, conf *config.Config) (int16, io.ReadWriteCloser, error) {
+	socket := wrappers.NewTimeoutRWC(conn, conf.TimeoutRead, conf.TimeoutWrite)
+	frame, err := obfuscated2.ExtractFrame(socket)
+	if err != nil {
+		return 0, nil, errors.Annotate(err, "Cannot extract frame")
+	}
+
+	obfs2, dc, err := obfuscated2.ParseObfuscated2ClientFrame(conf.Secret, frame)
+	if err != nil {
+		return 0, nil, errors.Annotate(err, "Cannot parse obfuscated frame")
+	}
+
+	socket = wrappers.NewStreamCipherRWC(socket, obfs2.Encryptor, obfs2.Decryptor)
+
+	return dc, socket, nil
+}