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server.go
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server.go
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package transfer
import (
"os"
"log"
"path"
)
import (
"github.com/jellybean4/kcp_tran/kcp"
"github.com/jellybean4/kcp_tran/msg"
)
type server struct {
host, dest string
}
func Serve(host string, dest string) error {
s := new(server)
s.host, s.dest = host, dest
server, err := kcp.Listen(host, 1)
if err != nil {
return err
}
for {
kdp, err := server.Accept()
if err != nil {
return err
}
go s.process(kdp)
}
}
func (s *server) process(sock Pipe) {
point := NewEndPoint(1, sock)
mesg, err := point.ReadMessageTimeout(TIMEOUT)
if err != nil {
log.Printf("server read message failed %s", err.Error())
return
}
if mesg.SendInit != nil {
err := s.proc_send(mesg.SendInit, sock)
log.Printf("server proc send rslt %v", err)
} else if mesg.RecvInit != nil {
err := s.proc_recv(mesg.RecvInit, sock)
log.Printf("server proc recv rslt %v", err)
}
}
func (s *server) proc_recv(init *msg.RecvInit, sock Pipe) error {
if info, err := os.Stat(*init.Name); err != nil {
log.Printf("server check file %s info error %s", *init.Name, err.Error())
return err
} else if file, err := os.OpenFile(*init.Name, os.O_RDONLY, 0); err != nil {
log.Printf("server open recved file %s error %s", *init.Name, err.Error())
return err
} else {
point := NewEndPoint(1, sock)
defer file.Close()
return SendFileProc(point, info, file)
}
}
func (s *server) proc_send(init *msg.SendInit, sock Pipe) error {
var (
cfile, file *os.File
err error
fill bool
point *EndPoint
)
flags := os.O_RDWR | os.O_CREATE
name := s.dest + path.Base(*init.Name)
name, fill = ChooseName(name)
conf := ConfigName(name)
defer CloseFiles(cfile, file)
if cfile, err = os.OpenFile(conf, flags, 0600); err != nil {
log.Printf("server open config file error %s", err.Error())
return err
} else if file, err = os.OpenFile(name, flags, 0600); err != nil {
log.Printf("server open data file error %s", err.Error())
return err
}
point = NewEndPoint(1, sock)
if fill, err = LoadConfig(cfile, point); err != nil {
log.Printf("server load config error %s", err.Error())
return err
}
if fill, err = ParseInitMesg(init, point); err != nil {
log.Printf("server parse init message failed %s", err.Error())
return err
} else if err = WriteConfig(cfile, point); err != nil {
log.Printf("server write config failed %s", err.Error())
return err
}
return RecvFileProc(point, file, cfile, fill)
}