Rename server to proxy

proxy/cipherrwc.go

@@ -0,0 +1,51 @@
+package proxy
+
+import (
+	"bytes"
+	"io"
+)
+
+type Cipher interface {
+	Encrypt([]byte) []byte
+	Decrypt([]byte) []byte
+}
+
+type CipherReadWriteCloser struct {
+	crypt Cipher
+	conn  io.ReadWriteCloser
+	rest  *bytes.Buffer
+}
+
+func (c *CipherReadWriteCloser) Read(p []byte) (n int, err error) {
+	n, err = c.conn.Read(p)
+	copy(p, c.crypt.Decrypt(p[:n]))
+	return
+}
+
+func (c *CipherReadWriteCloser) Write(p []byte) (n int, err error) {
+	encrypted := c.crypt.Encrypt(p)
+
+	curN := 0
+	for len(encrypted) > 0 {
+		curN, err = c.conn.Write(encrypted)
+		n += curN
+		if err != nil {
+			return
+		}
+		encrypted = encrypted[n:]
+	}
+
+	return
+}
+
+func (c *CipherReadWriteCloser) Close() error {
+	return c.conn.Close()
+}
+
+func newCipherReadWriteCloser(conn io.ReadWriteCloser, crypt Cipher) *CipherReadWriteCloser {
+	return &CipherReadWriteCloser{
+		conn:  conn,
+		crypt: crypt,
+		rest:  &bytes.Buffer{},
+	}
+}