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golang chatroom
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package main | |
import ( | |
"flag" | |
"fmt" | |
"io" | |
"log" | |
"net" | |
) | |
type MultiWriter []io.Writer | |
func (w MultiWriter) Write(b []byte) (int, error) { | |
i, err := io.MultiWriter(w...).Write(b) | |
if err != nil { | |
return MultiWriter(w[i+1:]).Write(b) | |
} | |
return i, err | |
} | |
func GetConnection(s net.Listener) net.Conn { | |
for { | |
if conn, err := s.Accept(); err == nil { | |
return conn | |
} | |
} | |
panic("Could not get live connection") | |
} | |
func Pair(s net.Listener) { | |
var conn net.Conn | |
var writers = &MultiWriter{} | |
for { | |
conn = GetConnection(s) | |
*writers = append(*writers, conn) | |
go io.Copy(writers, conn) | |
} | |
} | |
const ( | |
PORT = 9877 | |
PORT_desc = "Port to run server on" | |
) | |
func main() { | |
var port int | |
flag.IntVar(&port, "port", PORT, PORT_desc) | |
flag.Parse() | |
log.Printf("Running spigot server on port %d\n", port) | |
server, err := net.Listen("tcp", fmt.Sprintf(":%d", port)) | |
if err != nil { | |
log.Fatal(err) | |
} | |
Pair(server) | |
} |
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