update capsulation

net/conn.go

@@ -11,27 +11,27 @@ import (
 const BUF_SIZE = 1024
 
 type Conn struct {
-	Conn net.Conn
+	conn net.Conn
 }
 
-func (conn *Conn) Close() {
-	conn.Conn.Close()
+func (c *Conn) Close() {
+	c.conn.Close()
 }
 
-func (conn *Conn) RemoteAddr() net.Addr {
-	return conn.Conn.RemoteAddr()
+func (c *Conn) RemoteAddr() net.Addr {
+	return c.conn.RemoteAddr()
 }
 
-func (conn *Conn) LocalAddr() net.Addr {
-	return conn.Conn.LocalAddr()
+func (c *Conn) LocalAddr() net.Addr {
+	return c.conn.LocalAddr()
 }
 
-func (conn *Conn) Read(b []byte) (n int, err error) {
-	return conn.Conn.Read(b)
+func (c *Conn) Read(b []byte) (n int, err error) {
+	return c.conn.Read(b)
 }
 
-func (conn *Conn) Write(b []byte) (n int, err error) {
-	return conn.Conn.Write(b)
+func (c *Conn) Write(b []byte) (n int, err error) {
+	return c.conn.Write(b)
 }
 
 func (conn *Conn) WriteChunks(c [][]byte) (n int, err error) {
@@ -68,7 +68,7 @@ func (conn *Conn) ReadBytes() ([]byte, error) {
 }
 
 func (lConn *Conn) HandleHttp(p packet.HttpPacket) {
-	ip, err := doh.Lookup(p.Domain)
+	ip, err := doh.Lookup(p.Domain())
 	if err != nil {
 		log.Debug("[HTTPS] Error looking up for domain: ", err)
 	}
@@ -96,7 +96,7 @@ func (lConn *Conn) HandleHttp(p packet.HttpPacket) {
 }
 
 func (lConn *Conn) HandleHttps(p packet.HttpPacket) {
-	ip, err := doh.Lookup(p.Domain)
+	ip, err := doh.Lookup(p.Domain())
 	if err != nil {
 		log.Debug("[HTTPS] Error looking up for domain: ", err)
 	}

net/dial.go

@@ -10,7 +10,7 @@ func Listen(network, address string) (Listener, error) {
 		return Listener{}, err
 	}
 
-	return Listener{Listener: l}, nil
+	return Listener{listener: l}, nil
 }
 
 func Dial(network, address string) (Conn, error) {
@@ -19,5 +19,5 @@ func Dial(network, address string) (Conn, error) {
 		return Conn{}, err
 	}
 
-	return Conn{Conn: conn}, nil
+	return Conn{conn: conn}, nil
 }

net/listener.go

@@ -5,14 +5,14 @@ import (
 )
 
 type Listener struct {
-	Listener net.Listener
+	listener net.Listener
 }
 
 func (l *Listener) Accept() (Conn, error) {
-	conn, err := l.Listener.Accept()
+	conn, err := l.listener.Accept()
 	if err != nil {
 		return Conn{}, err
 	}
 
-	return Conn{Conn: conn}, nil
+	return Conn{conn: conn}, nil
 }

packet/http.go

@@ -41,32 +41,46 @@ var validMethod = map[string]struct{}{
 }
 
 type HttpPacket struct {
-	Raw     []byte
-	Method  string
-	Domain  string
-	Version string
+	raw     []byte
+	method  string
+	domain  string
+	version string
 }
 
 func NewHttpPacket(raw []byte) HttpPacket {
 	method, domain, version := parse(raw)
+
 	return HttpPacket{
-		Raw:     raw,
-		Method:  method,
-		Domain:  domain,
-		Version: version,
+		raw:     raw,
+		method:  method,
+		domain:  domain,
+		version: version,
 	}
 }
 
-func (r *HttpPacket) IsValidMethod() bool {
-	if _, exists := validMethod[r.Method]; exists {
+func (p *HttpPacket) Raw() []byte {
+	return p.raw
+}
+func (p *HttpPacket) Method() string {
+	return p.method
+}
+func (p *HttpPacket) Domain() string {
+	return p.domain
+}
+func (p *HttpPacket) Version() string {
+	return p.version
+}
+
+func (p *HttpPacket) IsValidMethod() bool {
+	if _, exists := validMethod[p.Method()]; exists {
 		return true
 	}
 
 	return false
 }
 
-func (r *HttpPacket) IsConnectMethod() bool {
-	return r.Method == "CONNECT"
+func (p *HttpPacket) IsConnectMethod() bool {
+	return p.Method() == "CONNECT"
 }
 
 func parse(raw []byte) (string, string, string) {

packet/https.go

@@ -1,19 +1,23 @@
 package packet
 
 type HttpsPacket struct {
-	Raw []byte
+	raw []byte
 }
 
 func NewHttpsPacket(raw []byte) HttpsPacket {
 	return HttpsPacket{
-		Raw: raw,
+		raw: raw,
 	}
 }
 
-func (r HttpsPacket) SplitInChunks() [][]byte {
-	if len(r.Raw) < 1 {
-		return [][]byte{r.Raw}
+func (p *HttpsPacket) Raw() []byte {
+	return p.raw
 }
 
-	return [][]byte{(r.Raw)[:1], (r.Raw)[1:]}
+func (p *HttpsPacket) SplitInChunks() [][]byte {
+	if len(p.Raw()) < 1 {
+		return [][]byte{p.Raw()}
+	}
+
+	return [][]byte{(p.Raw())[:1], (p.Raw())[1:]}
 }

proxy/proxy.go

@@ -9,23 +9,27 @@ import (
 )
 
 type Proxy struct {
-	Port string
+	port string
 }
 
 func New(port string) *Proxy {
 	return &Proxy{
-		Port: port,
+		port: port,
 	}
 }
 
+func (p *Proxy) Port() string {
+	return p.port
+}
+
 func (p *Proxy) Start() {
-	l, err := net.Listen("tcp", ":"+p.Port)
+	l, err := net.Listen("tcp", ":"+p.Port())
 	if err != nil {
 		log.Fatal("Error creating listener: ", err)
 		os.Exit(1)
 	}
 
-	log.Println("Created a listener on :", p.Port)
+	log.Println("Created a listener on :", p.Port())
 
 	for {
 		conn, err := l.Accept()
@@ -45,20 +49,20 @@ func (p *Proxy) Start() {
 			}
 			log.Debug("Client sent data: ", len(b))
 
-			r := packet.NewHttpPacket(b)
-			log.Debug("New request: \n\n" + string(r.Raw))
+			pkt := packet.NewHttpPacket(b)
+			log.Debug("New request: \n\n" + string(pkt.Raw()))
 
-			if !r.IsValidMethod() {
-				log.Println("Unsupported method: ", r.Method)
+			if !pkt.IsValidMethod() {
+				log.Println("Unsupported method: ", pkt.Method())
 				return
 			}
 
-			if r.IsConnectMethod() {
+			if pkt.IsConnectMethod() {
 				log.Debug("HTTPS Requested")
-				conn.HandleHttps(r)
+				conn.HandleHttps(pkt)
 			} else {
 				log.Debug("HTTP Requested.")
-				conn.HandleHttp(r)
+				conn.HandleHttp(pkt)
 			}
 		}()
 	}