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change udp

master
godo 9 months ago
parent
commit
c1cfb25990
  1. 7
      godo/cmd/main.go
  2. 444
      godo/localchat/file.go
  3. 29
      godo/localchat/info.go
  4. 180
      godo/localchat/linux.go
  5. 70
      godo/localchat/send.go
  6. 118
      godo/localchat/udp.go
  7. 182
      godo/localchat/windows.go

7
godo/cmd/main.go

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

444
godo/localchat/file.go

@ -1,224 +1,224 @@
package localchat
import (
"encoding/json"
"fmt"
"godo/libs"
"io"
"log"
"net"
"net/http"
"os"
"path/filepath"
"time"
)
const (
fileSize = 1024 // 每个数据包的大小
)
type FileChunk struct {
ChunkIndex int `json:"chunk_index"`
Data []byte `json:"data"`
Checksum uint32 `json:"checksum"`
Timestamp time.Time `json:"timestamp"`
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
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()
toIp := msg.IP
preferredIP, err := GetLocalIP()
if err != nil {
http.Error(w, "Failed to get preferred IP", http.StatusInternalServerError)
return
}
msg.IP = preferredIP
msg.Type = "file"
basePath, err := libs.GetOsDir()
if err != nil {
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)
} else {
handleFile(filePath, toIp, msg)
}
} else {
http.Error(w, "Failed to stat path", http.StatusInternalServerError)
return
}
}
func handleFile(filePath string, toIp string, message UdpMessage) {
// 打开文件
file, err := os.Open(filePath)
if err != nil {
log.Fatalf("Failed to open file: %v", err)
}
defer file.Close()
// 获取文件大小
fileInfo, err := file.Stat()
if err != nil {
log.Fatalf("Failed to get file info: %v", err)
}
fileSize := fileInfo.Size()
// 计算需要发送的数据包数量
numChunks := (fileSize + fileSize - 1) / fileSize
// 发送文件
SendFile(file, int(numChunks), toIp, message)
}
func handleDirectory(dirPath string, toIp string, message UdpMessage) {
err := filepath.Walk(dirPath, func(path string, info os.FileInfo, err error) error {
if err != nil {
return err
}
if !info.IsDir() {
handleFile(path, toIp, message)
}
return nil
})
if err != nil {
log.Fatalf("Failed to walk directory: %v", err)
}
}
func SendFile(file *os.File, numChunks int, toIp string, message UdpMessage) {
// 逐块读取文件并发送
for i := 0; i < numChunks; i++ {
var chunkData [fileSize]byte
n, err := file.Read(chunkData[:])
if err != nil && err != io.EOF {
log.Fatalf("Failed to read file chunk: %v", err)
}
// 创建文件块
chunk := FileChunk{
ChunkIndex: i,
Data: chunkData[:n],
Checksum: calculateChecksum(chunkData[:n]),
Timestamp: time.Now(),
Filename: filepath.Base(file.Name()),
}
message.Message = chunk
// 将文件块转换为 JSON 格式
data, err := json.Marshal(message)
if err != nil {
log.Fatalf("Failed to marshal chunk: %v", err)
}
// 发送文件块
addr, err := net.ResolveUDPAddr("udp4", toIp)
if err != nil {
log.Fatalf("Failed to resolve UDP address: %v", err)
}
conn, err := net.DialUDP("udp4", nil, addr)
if err != nil {
log.Fatalf("Failed to dial UDP address: %v", err)
}
defer conn.Close()
_, err = conn.Write(data)
if err != nil {
log.Printf("Failed to write data: %v", err)
}
fmt.Printf("发送文件块 %d 到 %s 成功\n", i, toIp)
}
}
func RecieveFile(msg UdpMessage) {
chunk := msg.Message.(FileChunk)
// 验证校验和
calculatedChecksum := calculateChecksum(chunk.Data)
if calculatedChecksum != chunk.Checksum {
fmt.Printf("Checksum mismatch for chunk %d from %s\n", chunk.ChunkIndex, msg.IP)
return
}
baseDir, err := libs.GetOsDir()
if err != nil {
log.Printf("Failed to get OS directory: %v", err)
return
}
// 创建接收文件的目录
receiveDir := filepath.Join(baseDir, "C", "Users", "Reciv", time.Now().Format("2006-01-02"))
if !libs.PathExists(receiveDir) {
err := os.MkdirAll(receiveDir, 0755)
if err != nil {
log.Printf("Failed to create receive directory: %v", err)
return
}
}
// 确定文件路径
filePath := filepath.Join(receiveDir, chunk.Filename)
// 如果文件不存在,则创建新文件
if _, err := os.Stat(filePath); os.IsNotExist(err) {
file, err := os.Create(filePath)
if err != nil {
log.Printf("Failed to create file: %v", err)
return
}
defer file.Close()
}
// 打开或追加到现有文件
file, err := os.OpenFile(filePath, os.O_APPEND|os.O_WRONLY, 0644)
if err != nil {
log.Printf("Failed to open file: %v", err)
return
}
defer file.Close()
// 写入数据
_, err = file.Write(chunk.Data)
if err != nil {
log.Printf("Failed to write data to file: %v", err)
return
}
fmt.Printf("接收到文件块 %d 从 %s 成功\n", chunk.ChunkIndex, msg.IP)
}
func calculateChecksum(data []byte) uint32 {
checksum := uint32(0)
for _, b := range data {
checksum += uint32(b)
}
return checksum
}
// import (
// "encoding/json"
// "fmt"
// "godo/libs"
// "io"
// "log"
// "net"
// "net/http"
// "os"
// "path/filepath"
// "time"
// )
// const (
// fileSize = 1024 // 每个数据包的大小
// )
// type FileChunk struct {
// ChunkIndex int `json:"chunk_index"`
// Data []byte `json:"data"`
// Checksum uint32 `json:"checksum"`
// Timestamp time.Time `json:"timestamp"`
// 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
// 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()
// toIp := msg.IP
// preferredIP, err := GetLocalIP()
// if err != nil {
// http.Error(w, "Failed to get preferred IP", http.StatusInternalServerError)
// return
// }
// msg.IP = preferredIP
// msg.Type = "file"
// basePath, err := libs.GetOsDir()
// if err != nil {
// 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)
// } else {
// handleFile(filePath, toIp, msg)
// }
// } else {
// http.Error(w, "Failed to stat path", http.StatusInternalServerError)
// return
// }
// }
// func handleFile(filePath string, toIp string, message UdpMessage) {
// // 打开文件
// file, err := os.Open(filePath)
// if err != nil {
// log.Fatalf("Failed to open file: %v", err)
// }
// defer file.Close()
// // 获取文件大小
// fileInfo, err := file.Stat()
// if err != nil {
// log.Fatalf("Failed to get file info: %v", err)
// }
// fileSize := fileInfo.Size()
// // 计算需要发送的数据包数量
// numChunks := (fileSize + fileSize - 1) / fileSize
// // 发送文件
// SendFile(file, int(numChunks), toIp, message)
// }
// func handleDirectory(dirPath string, toIp string, message UdpMessage) {
// err := filepath.Walk(dirPath, func(path string, info os.FileInfo, err error) error {
// if err != nil {
// return err
// }
// if !info.IsDir() {
// handleFile(path, toIp, message)
// }
// return nil
// })
// if err != nil {
// log.Fatalf("Failed to walk directory: %v", err)
// }
// }
// func SendFile(file *os.File, numChunks int, toIp string, message UdpMessage) {
// // 逐块读取文件并发送
// for i := 0; i < numChunks; i++ {
// var chunkData [fileSize]byte
// n, err := file.Read(chunkData[:])
// if err != nil && err != io.EOF {
// log.Fatalf("Failed to read file chunk: %v", err)
// }
// // 创建文件块
// chunk := FileChunk{
// ChunkIndex: i,
// Data: chunkData[:n],
// Checksum: calculateChecksum(chunkData[:n]),
// Timestamp: time.Now(),
// Filename: filepath.Base(file.Name()),
// }
// message.Message = chunk
// // 将文件块转换为 JSON 格式
// data, err := json.Marshal(message)
// if err != nil {
// log.Fatalf("Failed to marshal chunk: %v", err)
// }
// // 发送文件块
// addr, err := net.ResolveUDPAddr("udp4", toIp)
// if err != nil {
// log.Fatalf("Failed to resolve UDP address: %v", err)
// }
// conn, err := net.DialUDP("udp4", nil, addr)
// if err != nil {
// log.Fatalf("Failed to dial UDP address: %v", err)
// }
// defer conn.Close()
// _, err = conn.Write(data)
// if err != nil {
// log.Printf("Failed to write data: %v", err)
// }
// fmt.Printf("发送文件块 %d 到 %s 成功\n", i, toIp)
// }
// }
// func RecieveFile(msg UdpMessage) {
// chunk := msg.Message.(FileChunk)
// // 验证校验和
// calculatedChecksum := calculateChecksum(chunk.Data)
// if calculatedChecksum != chunk.Checksum {
// fmt.Printf("Checksum mismatch for chunk %d from %s\n", chunk.ChunkIndex, msg.IP)
// return
// }
// baseDir, err := libs.GetOsDir()
// if err != nil {
// log.Printf("Failed to get OS directory: %v", err)
// return
// }
// // 创建接收文件的目录
// receiveDir := filepath.Join(baseDir, "C", "Users", "Reciv", time.Now().Format("2006-01-02"))
// if !libs.PathExists(receiveDir) {
// err := os.MkdirAll(receiveDir, 0755)
// if err != nil {
// log.Printf("Failed to create receive directory: %v", err)
// return
// }
// }
// // 确定文件路径
// filePath := filepath.Join(receiveDir, chunk.Filename)
// // 如果文件不存在,则创建新文件
// if _, err := os.Stat(filePath); os.IsNotExist(err) {
// file, err := os.Create(filePath)
// if err != nil {
// log.Printf("Failed to create file: %v", err)
// return
// }
// defer file.Close()
// }
// // 打开或追加到现有文件
// file, err := os.OpenFile(filePath, os.O_APPEND|os.O_WRONLY, 0644)
// if err != nil {
// log.Printf("Failed to open file: %v", err)
// return
// }
// defer file.Close()
// // 写入数据
// _, err = file.Write(chunk.Data)
// if err != nil {
// log.Printf("Failed to write data to file: %v", err)
// return
// }
// fmt.Printf("接收到文件块 %d 从 %s 成功\n", chunk.ChunkIndex, msg.IP)
// }
// func calculateChecksum(data []byte) uint32 {
// checksum := uint32(0)
// for _, b := range data {
// checksum += uint32(b)
// }
// return checksum
// }

29
godo/localchat/info.go

@ -1,23 +1,18 @@
package localchat
import (
"fmt"
"os"
)
// 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)
}
// // 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
}
// return preferredIP, hostname, nil
// }
// func GetLocalIP() (string, error) {
// addrs, err := net.Interfaces()

180
godo/localchat/linux.go

@ -3,106 +3,106 @@
package localchat
import (
"encoding/json"
"log"
"net"
)
// import (
// "encoding/json"
// "log"
// "net"
// )
func SendBroadcast(broadcastAddr string, message UdpMessage) error {
// 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
}
// 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
}
// // 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()
// 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
// // 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
}
// 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
}
// _, 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
}
// 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()
// // 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)
}
// // 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
}
// // 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)
}
}
// 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"
}
// func GetBroadcastAddr() string {
// //return libs.GetUdpAddr()
// return "224.0.0.251:20249"
// }

70
godo/localchat/send.go

@ -0,0 +1,70 @@
package localchat
// import (
// "encoding/json"
// "fmt"
// "godo/libs"
// "log"
// "net"
// "strings"
// )
// // SendToIP 向指定的 IP 地址发送 UDP 消息
// func SendToIP(message UdpMessage) error {
// toIp := message.IP
// port := GetBroadcastPort()
// addr, err := net.ResolveUDPAddr("udp4", fmt.Sprintf("%s:%s", toIp, port))
// if err != nil {
// log.Printf("Failed to resolve UDP address %s:%s: %v", toIp, port, 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", toIp, err)
// return 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)
// return err
// }
// message.IP = localIP
// data, err := json.Marshal(message)
// if err != nil {
// log.Printf("Failed to marshal JSON for %s: %v", toIp, err)
// return err
// }
// _, err = conn.WriteToUDP(data, addr)
// if err != nil {
// log.Printf("Failed to write to UDP address %s: %v", toIp, err)
// return err
// }
// 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()
// }
// func GetBroadcastPort() string {
// addr := GetBroadcastAddr()
// return addr[strings.LastIndex(addr, ":")+1:]
// }

118
godo/localchat/udp.go

@ -2,25 +2,26 @@ package localchat
import (
"encoding/json"
"fmt"
"godo/libs"
"log"
"net"
"os"
"strings"
"time"
)
type UdpMessage struct {
Type string `json:"type"`
IP string `json:"ip"`
Hostname string `json:"hostname"`
Message interface{} `json:"message"`
Hostname string `json:"hostname"`
Type string `json:"type"`
Time time.Time `json:"time"`
IP string `json:"ip"`
Message any `json:"message"`
}
type UdpAddress struct {
Hostname string `json:"hostname"`
IP string `json:"ip"`
}
var OnlineUsers = make(map[string]UdpMessage)
var OnlineUsers []UdpAddress
// SendBroadcast 发送广播消息
func init() {
go InitBroadcast()
go ListenForBroadcast()
@ -41,25 +42,18 @@ func InitBroadcast() {
Message: "",
}
//发送多播消息
//broadcastAddr := GetBroadcastAddr()
err = SendBroadcast("224.0.0.251:20249", message)
if err != nil {
log.Println("Failed to send broadcast message:", err)
}
err = SendBroadcast("255.255.255.255:20249", message)
broadcastAddr := GetBroadcastAddr()
err = SendBroadcast(broadcastAddr, message)
if err != nil {
log.Println("Failed to send broadcast message:", err)
}
}
}
func SendBroadcast(broadcastAddr string, message UdpMessage) error {
// SendToIP 向指定的 IP 地址发送 UDP 消息
func SendToIP(message UdpMessage) error {
toIp := message.IP
port := GetBroadcastPort()
addr, err := net.ResolveUDPAddr("udp4", fmt.Sprintf("%s:%s", toIp, port))
addr, err := net.ResolveUDPAddr("udp4", broadcastAddr)
if err != nil {
log.Printf("Failed to resolve UDP address %s:%s: %v", toIp, port, err)
log.Printf("Failed to resolve UDP address %s: %v", broadcastAddr, err)
return err
}
@ -72,43 +66,85 @@ func SendToIP(message UdpMessage) error {
conn, err := net.ListenUDP("udp4", localAddr)
if err != nil {
log.Printf("Failed to listen on UDP address %s: %v", toIp, err)
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()
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", toIp, err)
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", toIp, err)
log.Printf("Failed to write to UDP address %s: %v", broadcastAddr, err)
return err
}
log.Printf("发送 UDP 消息到 %s 成功", toIp)
log.Printf("发送消息到 %s 成功", broadcastAddr)
return nil
}
// 获取 OnlineUsers 的最新状态
func GetOnlineUsers() map[string]UdpMessage {
return OnlineUsers
// 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 := libs.GetIPAddress()
// 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
// }
// 从 remoteAddr 获取 IP 地址
ip := remoteAddr.IP.String()
if !contains(OnlineUsers, ip) {
OnlineUsers = append(OnlineUsers, UdpAddress{Hostname: udpMsg.Hostname, IP: ip})
log.Printf("在线用户: %v", OnlineUsers)
}
log.Printf("Received message from %s: %s", remoteAddr, udpMsg.Hostname)
}
}
func GetLocalIP() (string, error) {
return libs.GetIPAddress()
func contains(slice []UdpAddress, element string) bool {
for _, v := range slice {
if v.IP == element {
return true
}
}
return false
}
func GetOnlineUsers() []UdpAddress {
return OnlineUsers
}
func GetBroadcastPort() string {
addr := GetBroadcastAddr()
return addr[strings.LastIndex(addr, ":")+1:]
func GetBroadcastAddr() string {
return "224.0.0.251:20249"
}

182
godo/localchat/windows.go

@ -1,106 +1,106 @@
//go:build windows
// +build windows
// //go:build windows
// // +build windows
package localchat
import (
"encoding/json"
"log"
"net"
)
// import (
// "encoding/json"
// "log"
// "net"
// )
func SendBroadcast(broadcastAddr string, message UdpMessage) error {
// 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
}
// 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
}
// // 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()
// 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
// // 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
}
// 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
}
// _, 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
}
// 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)
}
// // 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
}
// 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)
}
}
// 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"
}
// func GetBroadcastAddr() string {
// //return libs.GetUdpAddr()
// return "255.255.255.255:20249"
// }

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