mirror of https://gitee.com/IrisVega/frp.git
143 lines
2.1 KiB
Go
143 lines
2.1 KiB
Go
package streamserver
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import (
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"fmt"
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"net"
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libnet "github.com/fatedier/frp/pkg/util/net"
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)
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type Type string
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const (
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TCP Type = "tcp"
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UDP Type = "udp"
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Unix Type = "unix"
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)
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type Server struct {
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netType Type
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bindAddr string
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bindPort int
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respContent []byte
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bufSize int64
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echoMode bool
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l net.Listener
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}
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type Option func(*Server) *Server
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func New(netType Type, options ...Option) *Server {
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s := &Server{
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netType: netType,
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bindAddr: "127.0.0.1",
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bufSize: 2048,
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}
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for _, option := range options {
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s = option(s)
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}
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return s
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}
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func WithBindAddr(addr string) Option {
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return func(s *Server) *Server {
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s.bindAddr = addr
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return s
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}
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}
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func WithBindPort(port int) Option {
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return func(s *Server) *Server {
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s.bindPort = port
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return s
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}
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}
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func WithRespContent(content []byte) Option {
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return func(s *Server) *Server {
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s.respContent = content
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return s
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}
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}
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func WithBufSize(bufSize int64) Option {
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return func(s *Server) *Server {
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s.bufSize = bufSize
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return s
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}
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}
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func WithEchoMode(echoMode bool) Option {
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return func(s *Server) *Server {
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s.echoMode = echoMode
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return s
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}
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}
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func (s *Server) Run() error {
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if err := s.initListener(); err != nil {
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return err
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}
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go func() {
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for {
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c, err := s.l.Accept()
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if err != nil {
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return
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}
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go s.handle(c)
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}
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}()
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return nil
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}
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func (s *Server) Close() error {
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if s.l != nil {
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return s.l.Close()
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}
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return nil
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}
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func (s *Server) initListener() (err error) {
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switch s.netType {
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case TCP:
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s.l, err = net.Listen("tcp", fmt.Sprintf("%s:%d", s.bindAddr, s.bindPort))
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case UDP:
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s.l, err = libnet.ListenUDP(s.bindAddr, s.bindPort)
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case Unix:
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s.l, err = net.Listen("unix", s.bindAddr)
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default:
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return fmt.Errorf("unknown server type: %s", s.netType)
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}
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return err
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}
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func (s *Server) handle(c net.Conn) {
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defer c.Close()
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buf := make([]byte, s.bufSize)
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for {
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n, err := c.Read(buf)
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if err != nil {
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return
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}
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if s.echoMode {
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c.Write(buf[:n])
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} else {
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c.Write(s.respContent)
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}
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}
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}
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func (s *Server) BindAddr() string {
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return s.bindAddr
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}
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func (s *Server) BindPort() int {
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return s.bindPort
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}
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