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package main
import (
"bufio"
"fmt"
"net"
"strings"
)
var (
clients = make(map[net.Conn]string)
chats [20]string
chats_i int
)
func broadcast(message string) {
for conn, _ := range clients {
fmt.Fprint(conn, message)
}
}
func handleCommand(conn net.Conn, message string) {
parts := strings.Split(message, " ")
command := parts[0]
fmt.Println("command >>", command)
switch command {
case "login":
name := parts[1]
fmt.Printf("%v now is %v\n", clients[conn], name)
clients[conn] = name
fmt.Fprintf(conn, "!%v\n", name)
default:
fmt.Println("Command not found")
}
}
func handleConnection(conn net.Conn) {
defer conn.Close()
clients[conn] = conn.RemoteAddr().String()
fmt.Println("Client connected: ", clients[conn])
fmt.Fprintln(conn, "127.0.0.1:7654=Hello everyone from server")
for i := 0; i < chats_i; i++ {
fmt.Fprint(conn, chats[i])
}
for {
message, error := bufio.NewReader(conn).ReadString('\n')
if error != nil {
break
}
if message[0] == '/' {
handleCommand(conn, message[1:len(message)-1])
} else {
chats[chats_i] = clients[conn] + "=" + message
fmt.Print(">> ", chats[chats_i])
broadcast(chats[chats_i])
chats_i = chats_i + 1
if chats_i >= len(chats) {
chats_i = 0
}
}
}
fmt.Println("Client disconnected:", clients[conn])
delete(clients, conn)
}
func main() {
listener, err := net.Listen("tcp", "0.0.0.0:7654")
if err != nil {
fmt.Println("Error starting server:", err)
return
}
defer listener.Close()
fmt.Println("Chat server started on 0.0.0.0:7654")
chats_i = 0
for {
conn, err := listener.Accept()
if err != nil {
fmt.Println("Error accepting connection:", err)
continue
}
go handleConnection(conn)
}
}
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