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change udp

master
godo 9 months ago
parent
commit
a58aaba82e
  1. 10
      godo/cmd/main.go
  2. 16
      godo/libs/dir.go
  3. 103
      godo/localchat/addr.go
  4. 47
      godo/localchat/file.go
  5. 62
      godo/localchat/info.go
  6. 108
      godo/localchat/linux.go
  7. 36
      godo/localchat/send.go
  8. 71
      godo/localchat/server.go
  9. 107
      godo/localchat/udp.go
  10. 106
      godo/localchat/windows.go

10
godo/cmd/main.go

@ -5,6 +5,7 @@ import (
"godo/deps"
"godo/files"
"godo/libs"
"godo/localchat"
"godo/store"
"godo/sys"
"godo/webdav"
@ -77,11 +78,10 @@ func OsStart() {
fileRouter.HandleFunc("/unzip", files.HandleUnZip).Methods(http.MethodGet)
fileRouter.HandleFunc("/watch", files.WatchHandler).Methods(http.MethodGet)
//localchatRouter := router.PathPrefix("/localchat").Subrouter()
// localchatRouter.HandleFunc("/sse", localchat.SseHandler).Methods(http.MethodGet)
// localchatRouter.HandleFunc("/message", localchat.HandleMessage).Methods(http.MethodPost)
// localchatRouter.HandleFunc("/file", localchat.HandlerFile).Methods(http.MethodPost)
// localchatRouter.HandleFunc("/check", localchat.CheckUserHanlder).Methods(http.MethodGet)
localchatRouter := router.PathPrefix("/localchat").Subrouter()
localchatRouter.HandleFunc("/message", localchat.HandleMessage).Methods(http.MethodPost)
localchatRouter.HandleFunc("/file", localchat.HandlerFile).Methods(http.MethodPost)
localchatRouter.HandleFunc("/udpaddr", localchat.HandleAddr).Methods(http.MethodGet)
// 注册 WebDAV 路由
webdavRouter := router.PathPrefix("/webdav").Subrouter()

16
godo/libs/dir.go

@ -7,14 +7,6 @@ import (
"runtime"
)
var UdpMap = map[string]any{
"port": "20249",
"ips": []string{
"224.0.0.251",
"255.255.255.255",
},
}
func InitServer() error {
err := LoadConfig()
if err != nil {
@ -39,7 +31,7 @@ func InitServer() error {
SetConfig(osInfo)
udpAddr := ReqBody{
Name: "udpAddr",
Value: UdpMap,
Value: "224.0.0.251:20249",
}
SetConfig(udpAddr)
}
@ -64,12 +56,12 @@ func GetOsDir() (string, error) {
}
return osDir.(string), nil
}
func GetUdpAddr() map[string]any {
func GetUdpAddr() string {
udp, ok := GetConfig("udpAddr")
if !ok {
return UdpMap
return "224.0.0.251:20249"
}
return udp.(map[string]any)
return udp.(string)
}
func GetAppDir() (string, error) {
homeDir, err := os.UserHomeDir()

103
godo/localchat/addr.go

@ -0,0 +1,103 @@
package localchat
import (
"net"
"net/http"
"strconv"
"godo/libs"
)
func HandleAddr(w http.ResponseWriter, r *http.Request) {
addr := r.URL.Query().Get("addr")
if addr == "" {
libs.ErrorMsg(w, "addr is empty")
return
}
udpAddr := libs.GetUdpAddr()
if addr == udpAddr {
libs.ErrorMsg(w, "addr is same as current addr")
return
}
// 检查是否为多播地址
if !IsValidMulticastAddr(addr) {
libs.ErrorMsg(w, "addr is not a valid multicast address")
return
}
// 验证可访问性
if IsMulticastAddrAccessible(addr) {
save := libs.ReqBody{
Value: addr,
Name: "udpAddr",
}
libs.SetConfig(save)
libs.SuccessMsg(w, nil, "addr is a valid multicast address and accessible")
} else {
libs.ErrorMsg(w, "addr is a valid multicast address but not accessible")
}
}
// 检查是否为多播地址
func IsValidMulticastAddr(addr string) bool {
host, port, err := net.SplitHostPort(addr)
if err != nil {
return false
}
ip := net.ParseIP(host)
if ip == nil || !isMulticastIP(ip) {
return false
}
_, err = strconv.Atoi(port)
return err == nil
}
// 检查 IP 是否为多播地址
func isMulticastIP(ip net.IP) bool {
if ip.To4() != nil {
return ip[0]&0xF0 == 0xE0 // 检查 IPv4 多播地址范围 224.0.0.0 - 239.255.255.255
}
return ip[0]&0xF0 == 0xE0 // 检查 IPv6 多播地址范围 FF00::/8
}
// 验证多播地址的可访问性
func IsMulticastAddrAccessible(addr string) bool {
host, port, err := net.SplitHostPort(addr)
if err != nil {
return false
}
udpAddr, err := net.ResolveUDPAddr("udp4", net.JoinHostPort(host, port))
if err != nil {
return false
}
conn, err := net.ListenMulticastUDP("udp4", nil, udpAddr)
if err != nil {
return false
}
defer conn.Close()
// 发送一条测试消息
testMsg := []byte("Test message")
_, err = conn.WriteToUDP(testMsg, udpAddr)
if err != nil {
return false
}
// 接收一条测试消息
buffer := make([]byte, 1024)
n, _, err := conn.ReadFromUDP(buffer)
if err != nil {
return false
}
if n > 0 && string(buffer[:n]) == "Test message" {
return true
}
return false
}

47
godo/localchat/file.go

@ -25,24 +25,6 @@ type FileChunk struct {
Filename string `json:"filename"`
}
// HandleMessage 处理 HTTP 请求
func HandleMessage(w http.ResponseWriter, r *http.Request) {
var msg UdpMessage
decoder := json.NewDecoder(r.Body)
if err := decoder.Decode(&msg); err != nil {
http.Error(w, "Invalid request body", http.StatusBadRequest)
return
}
defer r.Body.Close()
err := SendToIP(msg)
if err != nil {
http.Error(w, "Failed to send message", http.StatusInternalServerError)
return
}
w.WriteHeader(http.StatusOK)
fmt.Fprintln(w, "Text message send successfully")
}
func HandlerFile(w http.ResponseWriter, r *http.Request) {
// 初始化多播地址
var msg UdpMessage
@ -59,18 +41,29 @@ func HandlerFile(w http.ResponseWriter, r *http.Request) {
libs.HTTPError(w, http.StatusInternalServerError, err.Error())
return
}
filePath := filepath.Join(basePath, msg.Message.(string))
// 处理单个文件或整个文件夹
if fileInfo, err := os.Stat(filePath); err == nil {
if fileInfo.IsDir() {
handleDirectory(filePath, toIp, msg)
paths, ok := msg.Message.([]string)
if !ok {
libs.HTTPError(w, http.StatusInternalServerError, "Invalid request body")
return
}
for _, p := range paths {
filePath := filepath.Join(basePath, p)
// 处理单个文件或整个文件夹
if fileInfo, err := os.Stat(filePath); err == nil {
if fileInfo.IsDir() {
handleDirectory(filePath, toIp, msg)
} else {
handleFile(filePath, toIp, msg)
}
} else {
handleFile(filePath, toIp, msg)
continue
}
} else {
http.Error(w, "Failed to stat path", http.StatusInternalServerError)
return
}
msg.Type = "text"
msg.Message = "文件发送完成"
SendToIP(msg)
libs.SuccessMsg(w, nil, "文件发送成功")
}
func handleFile(filePath string, toIp string, message UdpMessage) {

62
godo/localchat/info.go

@ -1,62 +0,0 @@
package localchat
// // 获取自己的IP地址和主机名
// func GetMyIPAndHostname() (string, string, error) {
// hostname, err := os.Hostname()
// if err != nil {
// return "", "", fmt.Errorf("failed to get hostname: %w", err)
// }
// preferredIP, err := GetLocalIP()
// if err != nil {
// return "", "", fmt.Errorf("failed to get IP address: %w", err)
// }
// return preferredIP, hostname, nil
// }
// func GetLocalIP() (string, error) {
// addrs, err := net.Interfaces()
// if err != nil {
// return "", fmt.Errorf("failed to get network interfaces: %w", err)
// }
// var preferredIP net.IP
// for _, iface := range addrs {
// if iface.Flags&net.FlagUp == 0 {
// // Skip interfaces that are not up
// continue
// }
// ifAddrs, err := iface.Addrs()
// if err != nil {
// continue // Ignore this interface if we can't get its addresses
// }
// for _, addr := range ifAddrs {
// var ip net.IP
// switch v := addr.(type) {
// case *net.IPNet:
// ip = v.IP
// case *net.IPAddr:
// ip = v.IP
// default:
// continue
// }
// if ip.IsLoopback() {
// continue // Skip loopback addresses
// }
// if ip.To4() != nil && (ip.IsPrivate() || ip.IsGlobalUnicast()) {
// // Prefer global unicast or private addresses over link-local
// preferredIP = ip
// break
// }
// }
// if preferredIP != nil {
// // Found a preferred IP, break out of the loop
// break
// }
// }
// if preferredIP == nil {
// return "", fmt.Errorf("no preferred non-loopback IPv4 address found")
// }
// return preferredIP.String(), nil
// }

108
godo/localchat/linux.go

@ -1,108 +0,0 @@
//go:build !windows
// +build !windows
package localchat
// import (
// "encoding/json"
// "log"
// "net"
// )
// func SendBroadcast(broadcastAddr string, message UdpMessage) error {
// addr, err := net.ResolveUDPAddr("udp4", broadcastAddr)
// if err != nil {
// log.Printf("Failed to resolve UDP address %s: %v", broadcastAddr, err)
// return err
// }
// // 使用本地地址进行连接
// localAddr, err := net.ResolveUDPAddr("udp4", "0.0.0.0:0")
// if err != nil {
// log.Printf("Failed to resolve local UDP address: %v", err)
// return err
// }
// conn, err := net.ListenUDP("udp4", localAddr)
// if err != nil {
// log.Printf("Failed to listen on UDP address %s: %v", broadcastAddr, err)
// return err
// }
// defer conn.Close()
// // 获取本地 IP 地址
// localIP, err := GetLocalIP()
// log.Printf("本地 IP 地址: %s", localIP)
// if err != nil {
// log.Printf("Failed to get local IP address: %v", err)
// return err
// }
// message.IP = localIP
// data, err := json.Marshal(message)
// if err != nil {
// log.Printf("Failed to marshal JSON for %s: %v", broadcastAddr, err)
// return err
// }
// _, err = conn.WriteToUDP(data, addr)
// if err != nil {
// log.Printf("Failed to write to UDP address %s: %v", broadcastAddr, err)
// return err
// }
// log.Printf("发送消息到 %s 成功", broadcastAddr)
// return nil
// }
// // ListenForBroadcast 监听多播消息
// func ListenForBroadcast() {
// broadcastAddr := GetBroadcastAddr()
// addr, err := net.ResolveUDPAddr("udp4", broadcastAddr)
// if err != nil {
// log.Fatalf("Failed to resolve UDP address: %v", err)
// }
// // 使用 ListenMulticastUDP 创建多播连接
// conn, err := net.ListenMulticastUDP("udp4", nil, addr)
// if err != nil {
// log.Fatalf("Failed to listen on UDP address: %v", err)
// }
// defer conn.Close()
// // 获取本地 IP 地址
// localIP, err := GetLocalIP()
// if err != nil {
// log.Printf("Failed to get local IP address: %v", err)
// }
// // 开始监听多播消息
// buffer := make([]byte, 1024)
// for {
// n, remoteAddr, err := conn.ReadFromUDP(buffer)
// if err != nil {
// log.Printf("Error reading from UDP: %v", err)
// continue
// }
// var udpMsg UdpMessage
// err = json.Unmarshal(buffer[:n], &udpMsg)
// if err != nil {
// log.Printf("Error unmarshalling JSON: %v", err)
// continue
// }
// if udpMsg.IP == localIP {
// continue
// }
// OnlineUsers[udpMsg.IP] = udpMsg
// if udpMsg.Type == "file" {
// RecieveFile(udpMsg)
// }
// log.Printf("Received message from %s: %s", remoteAddr, udpMsg.Hostname)
// }
// }
// func GetBroadcastAddr() string {
// //return libs.GetUdpAddr()
// return "224.0.0.251:20249"
// }

36
godo/localchat/send.go

@ -5,16 +5,26 @@ import (
"fmt"
"log"
"net"
"net/http"
)
// import (
// "encoding/json"
// "fmt"
// "godo/libs"
// "log"
// "net"
// "strings"
// )
// HandleMessage 处理 HTTP 请求
func HandleMessage(w http.ResponseWriter, r *http.Request) {
var msg UdpMessage
decoder := json.NewDecoder(r.Body)
if err := decoder.Decode(&msg); err != nil {
http.Error(w, "Invalid request body", http.StatusBadRequest)
return
}
defer r.Body.Close()
err := SendToIP(msg)
if err != nil {
http.Error(w, "Failed to send message", http.StatusInternalServerError)
return
}
w.WriteHeader(http.StatusOK)
fmt.Fprintln(w, "Text message send successfully")
}
// SendToIP 向指定的 IP 地址发送 UDP 消息
func SendToIP(message UdpMessage) error {
@ -55,13 +65,3 @@ func SendToIP(message UdpMessage) error {
log.Printf("发送 UDP 消息到 %s 成功", toIp)
return nil
}
// // 获取 OnlineUsers 的最新状态
//
// func GetOnlineUsers() map[string]UdpMessage {
// return OnlineUsers
// }
//
// func GetLocalIP() (string, error) {
// return libs.GetIPAddress()
// }

71
godo/localchat/server.go

@ -0,0 +1,71 @@
package localchat
import (
"encoding/json"
"log"
"net"
"os"
"time"
)
func InitBroadcast() {
ticker := time.NewTicker(5 * time.Second) // 每 5 秒发送一次广播消息
defer ticker.Stop()
for range ticker.C {
hostname, err := os.Hostname()
if err != nil {
log.Printf("Failed to get hostname: %v", err)
continue
}
message := UdpMessage{
Type: "online",
Hostname: hostname,
Message: "",
Time: time.Now(),
}
//发送多播消息
broadcastAddr := GetBroadcastAddr()
err = SendBroadcast(broadcastAddr, message)
if err != nil {
log.Println("Failed to send broadcast message:", err)
}
}
}
func SendBroadcast(broadcastAddr string, message UdpMessage) error {
addr, err := net.ResolveUDPAddr("udp4", broadcastAddr)
if err != nil {
log.Printf("Failed to resolve UDP address %s: %v", broadcastAddr, err)
return err
}
// 使用本地地址进行连接
localAddr, err := net.ResolveUDPAddr("udp4", "0.0.0.0:0")
if err != nil {
log.Printf("Failed to resolve local UDP address: %v", err)
return err
}
conn, err := net.ListenUDP("udp4", localAddr)
if err != nil {
log.Printf("Failed to listen on UDP address %s: %v", broadcastAddr, err)
return err
}
defer conn.Close()
data, err := json.Marshal(message)
if err != nil {
log.Printf("Failed to marshal JSON for %s: %v", broadcastAddr, err)
return err
}
_, err = conn.WriteToUDP(data, addr)
if err != nil {
log.Printf("Failed to write to UDP address %s: %v", broadcastAddr, err)
return err
}
log.Printf("发送消息到 %s 成功", broadcastAddr)
return nil
}

107
godo/localchat/udp.go

@ -5,7 +5,6 @@ import (
"godo/libs"
"log"
"net"
"os"
"strings"
"time"
)
@ -18,76 +17,21 @@ type UdpMessage struct {
Message any `json:"message"`
}
type UdpAddress struct {
Hostname string `json:"hostname"`
IP string `json:"ip"`
Hostname string `json:"hostname"`
IP string `json:"ip"`
Time time.Time `json:"time"`
}
type Messages struct {
Messages []UdpMessage `json:"messages"`
}
var OnlineUsers []UdpAddress
var UserMessages = make(map[string]*Messages) // 使用指针类型
func init() {
go InitBroadcast()
go ListenForBroadcast()
}
func InitBroadcast() {
ticker := time.NewTicker(5 * time.Second) // 每 5 秒发送一次广播消息
defer ticker.Stop()
for range ticker.C {
hostname, err := os.Hostname()
if err != nil {
log.Printf("Failed to get hostname: %v", err)
continue
}
message := UdpMessage{
Type: "online",
Hostname: hostname,
Message: "",
}
//发送多播消息
broadcastAddr := GetBroadcastAddr()
err = SendBroadcast(broadcastAddr, message)
if err != nil {
log.Println("Failed to send broadcast message:", err)
}
}
}
func SendBroadcast(broadcastAddr string, message UdpMessage) error {
addr, err := net.ResolveUDPAddr("udp4", broadcastAddr)
if err != nil {
log.Printf("Failed to resolve UDP address %s: %v", broadcastAddr, err)
return err
}
// 使用本地地址进行连接
localAddr, err := net.ResolveUDPAddr("udp4", "0.0.0.0:0")
if err != nil {
log.Printf("Failed to resolve local UDP address: %v", err)
return err
}
conn, err := net.ListenUDP("udp4", localAddr)
if err != nil {
log.Printf("Failed to listen on UDP address %s: %v", broadcastAddr, err)
return err
}
defer conn.Close()
data, err := json.Marshal(message)
if err != nil {
log.Printf("Failed to marshal JSON for %s: %v", broadcastAddr, err)
return err
}
_, err = conn.WriteToUDP(data, addr)
if err != nil {
log.Printf("Failed to write to UDP address %s: %v", broadcastAddr, err)
return err
}
log.Printf("发送消息到 %s 成功", broadcastAddr)
return nil
}
// ListenForBroadcast 监听多播消息
func ListenForBroadcast() {
@ -129,9 +73,19 @@ func ListenForBroadcast() {
if containArr(ips, ip) {
continue
}
if !containIp(OnlineUsers, ip) {
OnlineUsers = append(OnlineUsers, UdpAddress{Hostname: udpMsg.Hostname, IP: ip})
log.Printf("在线用户: %v", OnlineUsers)
if udpMsg.Type == "online" {
if !containIp(OnlineUsers, ip) {
OnlineUsers = append(OnlineUsers, UdpAddress{Hostname: udpMsg.Hostname, IP: ip, Time: time.Now()})
log.Printf("在线用户: %v", OnlineUsers)
}
}
udpMsg.IP = ip
if udpMsg.Type == "text" {
addMessageToUserMessages(ip, udpMsg)
}
if udpMsg.Type == "file" {
addMessageToUserMessages(ip, udpMsg)
RecieveFile(udpMsg)
}
log.Printf("Received message from %s: %s", remoteAddr, udpMsg.Hostname)
}
@ -152,11 +106,30 @@ func containIp(slice []UdpAddress, element string) bool {
}
return false
}
// 添加消息到 UserMessages
func addMessageToUserMessages(ip string, msg UdpMessage) {
if _, ok := UserMessages[ip]; !ok {
UserMessages[ip] = &Messages{}
}
UserMessages[ip].Messages = append(UserMessages[ip].Messages, msg)
}
// 清空 UserMessages 中所有 IP 的消息列表
func ClearAllUserMessages() {
for ip, msg := range UserMessages {
msg.Messages = []UdpMessage{} // 清空切片
UserMessages[ip] = msg // 更新映射中的值
}
}
func GetUserMessages() map[string]*Messages {
return UserMessages
}
func GetOnlineUsers() []UdpAddress {
return OnlineUsers
}
func GetBroadcastAddr() string {
return "224.0.0.251:20249"
return libs.GetUdpAddr()
}
func GetBroadcastPort() string {
addr := GetBroadcastAddr()

106
godo/localchat/windows.go

@ -1,106 +0,0 @@
// //go:build windows
// // +build windows
package localchat
// import (
// "encoding/json"
// "log"
// "net"
// )
// func SendBroadcast(broadcastAddr string, message UdpMessage) error {
// addr, err := net.ResolveUDPAddr("udp4", broadcastAddr)
// if err != nil {
// log.Printf("Failed to resolve UDP address %s: %v", broadcastAddr, err)
// return err
// }
// // 使用本地地址进行连接
// localAddr, err := net.ResolveUDPAddr("udp4", "0.0.0.0:0")
// if err != nil {
// log.Printf("Failed to resolve local UDP address: %v", err)
// return err
// }
// conn, err := net.ListenUDP("udp4", localAddr)
// if err != nil {
// log.Printf("Failed to listen on UDP address %s: %v", broadcastAddr, err)
// return err
// }
// defer conn.Close()
// // 获取本地 IP 地址
// localIP, err := GetLocalIP()
// log.Printf("本地 IP 地址: %s", localIP)
// if err != nil {
// log.Printf("Failed to get local IP address: %v", err)
// return err
// }
// message.IP = localIP
// data, err := json.Marshal(message)
// if err != nil {
// log.Printf("Failed to marshal JSON for %s: %v", broadcastAddr, err)
// return err
// }
// _, err = conn.WriteToUDP(data, addr)
// if err != nil {
// log.Printf("Failed to write to UDP address %s: %v", broadcastAddr, err)
// return err
// }
// log.Printf("发送消息到 %s 成功", broadcastAddr)
// return nil
// }
// // ListenForBroadcast 监听广播消息
// func ListenForBroadcast() {
// // 使用本地地址监听
// localAddr, err := net.ResolveUDPAddr("udp4", ":20249")
// if err != nil {
// log.Fatalf("Failed to resolve local UDP address: %v", err)
// }
// conn, err := net.ListenUDP("udp4", localAddr)
// if err != nil {
// log.Fatalf("Failed to listen on UDP address: %v", err)
// }
// defer conn.Close()
// // 获取本地 IP 地址
// localIP, err := GetLocalIP()
// if err != nil {
// log.Printf("Failed to get local IP address: %v", err)
// }
// // 开始监听广播消息
// buffer := make([]byte, 1024)
// for {
// n, remoteAddr, err := conn.ReadFromUDP(buffer)
// if err != nil {
// log.Printf("Error reading from UDP: %v", err)
// continue
// }
// var udpMsg UdpMessage
// err = json.Unmarshal(buffer[:n], &udpMsg)
// if err != nil {
// log.Printf("Error unmarshalling JSON: %v", err)
// continue
// }
// if udpMsg.IP == localIP {
// continue
// }
// OnlineUsers[udpMsg.IP] = udpMsg
// if udpMsg.Type == "file" {
// RecieveFile(udpMsg)
// }
// log.Printf("Received message from %s: %s", remoteAddr, udpMsg.Hostname)
// }
// }
// func GetBroadcastAddr() string {
// //return libs.GetUdpAddr()
// return "255.255.255.255:20249"
// }
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