Merge pull request #183 from fatedier/fatedier/udp

support udp type

src/models/msg/process.go

@@ -53,9 +53,9 @@ func Join(c1 *conn.Conn, c2 *conn.Conn) {
 }
 
 // join two connections and do some operations
-func JoinMore(c1 *conn.Conn, c2 *conn.Conn, conf config.BaseConf, needRecord bool) {
+func JoinMore(c1 io.ReadWriteCloser, c2 io.ReadWriteCloser, conf config.BaseConf, needRecord bool) {
 	var wait sync.WaitGroup
-	encryptPipe := func(from *conn.Conn, to *conn.Conn) {
+	encryptPipe := func(from io.ReadCloser, to io.WriteCloser) {
 		defer from.Close()
 		defer to.Close()
 		defer wait.Done()
@@ -64,7 +64,7 @@ func JoinMore(c1 *conn.Conn, c2 *conn.Conn, conf config.BaseConf, needRecord boo
 		pipeEncrypt(from, to, conf, needRecord)
 	}
 
-	decryptPipe := func(to *conn.Conn, from *conn.Conn) {
+	decryptPipe := func(to io.ReadCloser, from io.WriteCloser) {
 		defer from.Close()
 		defer to.Close()
 		defer wait.Done()
@@ -109,7 +109,7 @@ func unpkgMsg(data []byte) (int, []byte, []byte) {
 }
 
 // decrypt msg from reader, then write into writer
-func pipeDecrypt(r *conn.Conn, w *conn.Conn, conf config.BaseConf, needRecord bool) (err error) {
+func pipeDecrypt(r io.Reader, w io.Writer, conf config.BaseConf, needRecord bool) (err error) {
 	laes := new(pcrypto.Pcrypto)
 	key := conf.AuthToken
 	if conf.PrivilegeMode {
@@ -175,7 +175,7 @@ func pipeDecrypt(r *conn.Conn, w *conn.Conn, conf config.BaseConf, needRecord bo
 			}
 		}
 
-		_, err = w.WriteBytes(res)
+		_, err = w.Write(res)
 		if err != nil {
 			return err
 		}
@@ -192,7 +192,7 @@ func pipeDecrypt(r *conn.Conn, w *conn.Conn, conf config.BaseConf, needRecord bo
 }
 
 // recvive msg from reader, then encrypt msg into writer
-func pipeEncrypt(r *conn.Conn, w *conn.Conn, conf config.BaseConf, needRecord bool) (err error) {
+func pipeEncrypt(r io.Reader, w io.Writer, conf config.BaseConf, needRecord bool) (err error) {
 	laes := new(pcrypto.Pcrypto)
 	key := conf.AuthToken
 	if conf.PrivilegeMode {
@@ -247,7 +247,7 @@ func pipeEncrypt(r *conn.Conn, w *conn.Conn, conf config.BaseConf, needRecord bo
 		}
 
 		res = pkgMsg(res)
-		_, err = w.WriteBytes(res)
+		_, err = w.Write(res)
 		if err != nil {
 			return err
 		}

src/models/msg/udp.go

@@ -0,0 +1,72 @@
+// Copyright 2016 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package msg
+
+import (
+	"encoding/base64"
+	"encoding/json"
+	"net"
+)
+
+type UdpPacket struct {
+	Content []byte       `json:"-"`
+	Src     *net.UDPAddr `json:"-"`
+	Dst     *net.UDPAddr `json:"-"`
+
+	EncodeContent string `json:"content"`
+	SrcStr        string `json:"src"`
+	DstStr        string `json:"dst"`
+}
+
+func NewUdpPacket(content []byte, src, dst *net.UDPAddr) *UdpPacket {
+	up := &UdpPacket{
+		Src:           src,
+		Dst:           dst,
+		EncodeContent: base64.StdEncoding.EncodeToString(content),
+		SrcStr:        src.String(),
+		DstStr:        dst.String(),
+	}
+	return up
+}
+
+// parse one udp packet struct to bytes
+func (up *UdpPacket) Pack() []byte {
+	b, _ := json.Marshal(up)
+	return b
+}
+
+// parse from bytes to UdpPacket struct
+func (up *UdpPacket) UnPack(packet []byte) error {
+	err := json.Unmarshal(packet, &up)
+	if err != nil {
+		return err
+	}
+
+	up.Content, err = base64.StdEncoding.DecodeString(up.EncodeContent)
+	if err != nil {
+		return err
+	}
+
+	up.Src, err = net.ResolveUDPAddr("udp", up.SrcStr)
+	if err != nil {
+		return err
+	}
+
+	up.Dst, err = net.ResolveUDPAddr("udp", up.DstStr)
+	if err != nil {
+		return err
+	}
+	return nil
+}

src/models/msg/udp_test.go

@@ -0,0 +1,50 @@
+// Copyright 2016 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package msg
+
+import (
+	"net"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+var (
+	content string = "udp packet test"
+	src     string = "1.1.1.1:1000"
+	dst     string = "2.2.2.2:2000"
+
+	udpMsg *UdpPacket
+)
+
+func init() {
+	srcAddr, _ := net.ResolveUDPAddr("udp", src)
+	dstAddr, _ := net.ResolveUDPAddr("udp", dst)
+	udpMsg = NewUdpPacket([]byte(content), srcAddr, dstAddr)
+}
+
+func TestPack(t *testing.T) {
+	assert := assert.New(t)
+	msg := udpMsg.Pack()
+	assert.Equal(string(msg), `{"content":"dWRwIHBhY2tldCB0ZXN0","src":"1.1.1.1:1000","dst":"2.2.2.2:2000"}`)
+}
+
+func TestUnpack(t *testing.T) {
+	assert := assert.New(t)
+	udpMsg.UnPack([]byte(`{"content":"dWRwIHBhY2tldCB0ZXN0","src":"1.1.1.1:1000","dst":"2.2.2.2:2000"}`))
+	assert.Equal(content, string(udpMsg.Content))
+	assert.Equal(src, udpMsg.Src.String())
+	assert.Equal(dst, udpMsg.Dst.String())
+}