func (s *Server) listenAndServeScgi(addr string) error {
var l net.Listener
var err error
//if the path begins with a "/", assume it's a unix address
if strings.HasPrefix(addr, "/") {
l, err = net.Listen("unix", addr)
} else {
l, err = net.Listen("tcp", addr)
}
//save the listener so it can be closed
s.l = l
if err != nil {
s.Logger.Println("SCGI listen error", err.Error())
return err
}
for {
fd, err := l.Accept()
if err != nil {
s.Logger.Println("SCGI accept error", err.Error())
return err
}
go s.handleScgiRequest(fd)
}
return nil
}
// Serve starts a secure echo server on the given listener.
func Serve(l net.Listener) error {
defer l.Close()
pub, priv, err := box.GenerateKey(rand.Reader)
if err != nil {
return err
}
for {
rawConn, err := l.Accept()
if err != nil {
return err
}
conn := &Conn{rawConn: rawConn, pub: pub, priv: priv}
go func(c *Conn) {
defer c.Close()
buf := make([]byte, 1024*32)
n, err := c.Read(buf)
if err != nil {
fmt.Println(err)
}
got := string(buf[:n])
log.Print(got)
// echo the message
n, err = c.Write([]byte(got))
if err != nil {
fmt.Println(err)
}
}(conn)
}
}
func (srv *Server) Serve(l net.Listener) error {
defer l.Close()
var tempDelay time.Duration // how long to sleep on accept failure
for {
rw, e := l.Accept()
if e != nil {
if ne, ok := e.(net.Error); ok && ne.Temporary() {
if tempDelay == 0 {
tempDelay = 5 * time.Millisecond
} else {
tempDelay *= 2
}
if max := 1 * time.Second; tempDelay > max {
tempDelay = max
}
// srv.logf("http: Accept error: %v; retrying in %v", e, tempDelay)
time.Sleep(tempDelay)
continue
}
return e
}
tempDelay = 0
c, err := srv.newConn(rw)
if err != nil {
continue
}
// c.setState(c.rwc, StateNew) // before Serve can return
go c.serve()
}
}
func (c *controller) acceptClientConnections(sock string, l net.Listener) {
for {
conn, err := l.Accept()
if err != nil {
if _, err1 := os.Stat(sock); os.IsNotExist(err1) {
logrus.Debugf("Unix socket %s doesn't exist. cannot accept client connections", sock)
return
}
logrus.Errorf("Error accepting connection %v", err)
continue
}
go func() {
defer conn.Close()
err := c.processExternalKey(conn)
ret := success
if err != nil {
ret = err.Error()
}
_, err = conn.Write([]byte(ret))
if err != nil {
logrus.Errorf("Error returning to the client %v", err)
}
}()
}
}
func runBackendInstance(ln net.Listener, handler connHandler) {
var tempDelay time.Duration // how long to sleep on accept failure
for {
conn, err := ln.Accept()
if err != nil {
if ne, ok := err.(net.Error); ok && ne.Temporary() {
if tempDelay == 0 {
tempDelay = 5 * time.Millisecond
} else {
tempDelay *= 2
}
if max := 1 * time.Second; tempDelay > max {
tempDelay = max
}
fmt.Printf("http: Accept error: %v; retrying in %v\n", err, tempDelay)
time.Sleep(tempDelay)
continue
}
break
}
go func() {
defer GinkgoRecover()
handler(test_util.NewHttpConn(conn))
}()
}
}
func RunServer(cfg Config) {
memoryStore := NewStore()
var ln net.Listener
var err error
if cfg.TLSEnabled() {
ln, err = tls.Listen("tcp", ":"+cfg.Port, cfg.TLSConfig())
} else {
ln, err = net.Listen("tcp", ":"+cfg.Port)
}
if err != nil {
log.Println("Failed to start server:", err.Error())
}
for {
conn, err := ln.Accept()
if err != nil {
log.Println("Client failed to open new connection:", err.Error())
}
id, err := newUUID()
if err != nil {
log.Println("Failed to create unique ID for new client")
conn.Close()
continue
}
log.Printf("New connection opened clientId=%s", id)
c := NewClient(id, conn, memoryStore)
go c.Handle()
}
}
// Serve accepts incoming connections on the Listener l, creating a
// new service thread for each. The service threads read requests and
// then call srv.Handler to reply to them.
func (srv *Server) Serve(l net.Listener) error {
defer l.Close()
handler := srv.Handler
if handler == nil {
handler = DefaultServeMux
}
for {
rw, e := l.Accept()
if e != nil {
if ne, ok := e.(net.Error); ok && ne.Temporary() {
log.Printf("icap: Accept error: %v", e)
continue
}
return e
}
if srv.ReadTimeout != 0 {
rw.SetReadDeadline(time.Now().Add(srv.ReadTimeout))
}
if srv.WriteTimeout != 0 {
rw.SetWriteDeadline(time.Now().Add(srv.WriteTimeout))
}
c, err := newConn(rw, handler)
if err != nil {
continue
}
go c.serve()
}
panic("not reached")
}
func (mockLive *MockLivestatus) StartMockLivestatus() {
var listener net.Listener
var err error
switch mockLive.ConnectionType {
case "tcp":
listener, err = net.Listen("tcp", mockLive.LivestatusAddress)
case "file":
listener, err = net.Listen("unix", mockLive.LivestatusAddress)
default:
log.Panic("ConnectionType undefined")
return
}
if err != nil {
log.Panic(err)
}
isRunning := true
for isRunning {
conn, err := listener.Accept()
if err != nil {
//log.Println(err)
continue
}
go mockLive.handle(conn)
mutex.Lock()
isRunning = mockLive.isRunning
mutex.Unlock()
}
}
func (this *TcpServer) doAcceptTcpClients(hServer net.Listener) {
for {
conn, err := hServer.Accept()
if this.beNotifiedToShutDown {
break
}
this.initClientWithConnection(conn)
if err != nil {
//回调accept失败
if nil != this.delegate {
_, implemented := this.delegate.(ITcpServerDelegate)
if implemented {
this.delegate.TcpServerAcceptClientError(this.getClientInfoMapClient(conn), err.Error())
break
}
}
} else {
handlerThread := this.createHandlerThread(conn)
this.addHandlerThreadToQueue(handlerThread)
this.setClientInfoMapConnectionThread(conn, handlerThread)
if nil != this.delegate {
_, implemented := this.delegate.(ITcpServerDelegate)
if implemented {
this.delegate.TcpServerClientConnected(this.getClientInfoMapClient(conn))
}
}
}
}
}
// ListenAndServe services SPDY requests using the given listener.
// If the handler is nil, then http.DefaultServeMux is used.
func (srv *Server) Serve(l net.Listener) error {
defer l.Close()
handler := srv.Handler
if handler == nil {
handler = http.DefaultServeMux
}
for {
fmt.Println("Spdy waiting for connections...")
conn, err := l.Accept()
fmt.Println("...Spdy accepted connection... %v->%v", conn.RemoteAddr(), conn.LocalAddr())
if err != nil {
return err
}
go func(c net.Conn) {
// Echo all incoming data.
fmt.Println("echoing data...")
bb := new(bytes.Buffer)
io.Copy(bb, c)
// Shut down the connection.
fmt.Println("spdyrequest: %s", bb.String())
fmt.Println("closing conn...")
c.Close()
}(conn)
// s, err := newSession(c, handler)
// if err != nil {
// return err
// }
// go s.serve()
}
/*
*/
return nil
}
func dataAccept(l net.Listener, f *FtpConn) {
conn, err := l.Accept()
if err != nil {
log.Fatal(err)
}
switch <-f.pasvChan {
case 1: //send
f.getFileList(conn)
f.pasvChan <- -1
case 2: //store
fout, err := os.Create(filepath.Join(getRealPath(f.wd), f.fileName))
defer fout.Close()
if err != nil {
log.Println(err)
f.pasvChan <- 0
return
}
io.Copy(fout, conn)
f.pasvChan <- -2
case 3: //retr
fout, err := os.Open(filepath.Join(getRealPath(f.wd), f.fileName))
defer fout.Close()
if err != nil {
log.Println(err)
f.pasvChan <- 0
return
}
io.Copy(conn, fout)
f.pasvChan <- -3
}
conn.Close()
l.Close()
}
// Serve starts a secure echo server on the given listener. Sending an empty
// message will quit the server.
func Serve(l net.Listener) error {
for {
conn, err := l.Accept()
if err != nil {
return err
}
defer conn.Close()
pub, priv, err := box.GenerateKey(rand.Reader)
if err != nil {
return err
}
peer, err := exchangeKeys(conn, pub)
if err != nil {
return err
}
secure := NewSecureConn(conn, priv, peer)
// If nothing is copied then the server will end. This allows the client to
// send an empty message to kill the server.
if n, err := io.Copy(secure, secure); n == 0 {
if err != nil {
return err
}
return fmt.Errorf("Server ending.")
}
}
}
func server(t *testing.T, listener net.Listener, connHandler ConnectionHandler, stopCh chan bool, acceptDelay time.Duration) {
defer listener.Close()
connCh := make(chan net.Conn, 0)
errCh := make(chan error, 0)
go func() {
for {
time.Sleep(acceptDelay)
conn, err := listener.Accept()
if err == nil {
connCh <- conn
} else {
errCh <- err
}
}
}()
AcceptLoop:
for {
select {
case <-stopCh:
break AcceptLoop
case conn := <-connCh:
go connHandler(t, conn)
case err := <-errCh:
if _, ok := <-stopCh; !ok {
t.Error("Accept:", err.Error())
} else {
break AcceptLoop
}
}
}
}
/*
Yields all accepted connections to the net.Listener on the returned Channel.
*/
func Chan(ln net.Listener, backlog int) *Netchan {
c := &Netchan{}
c.Accept = make(chan net.Conn, backlog)
c.Quit = make(chan bool, 1)
c.Listener = ln
go func() {
select {
case <-c.Quit:
close(c.Accept)
if err := ln.Close(); err != nil {
panic(err)
}
c.Quit <- true
}
}()
go func() {
for {
conn, err := ln.Accept()
// An error means that the listener was closed, or another event
// happened where we can't continue listening for connections.
if err != nil {
return
}
c.Accept <- conn
}
}()
return c
}
// Serve handles connections from ln and multiplexes then across registered listener.
func (mux *Mux) Serve(ln net.Listener) error {
mux.mu.Lock()
mux.ln = ln
mux.mu.Unlock()
for {
// Wait for the next connection.
// If it returns a temporary error then simply retry.
// If it returns any other error then exit immediately.
conn, err := ln.Accept()
if err, ok := err.(interface {
Temporary() bool
}); ok && err.Temporary() {
continue
}
if err != nil {
// Wait for all connections to be demux
mux.wg.Wait()
for _, ln := range mux.m {
close(ln.c)
}
return err
}
// Demux in a goroutine to
mux.wg.Add(1)
go mux.handleConn(conn)
}
}
func asyncAcceptTCP(serverfd net.Listener, timeout time.Duration) (net.Conn, error) {
t := time.NewTimer(timeout)
defer t.Stop()
if asynctcpconn == nil {
asynctcpconn = make(chan tcpconn, 1)
go func() {
connfd, err := serverfd.Accept()
if err != nil {
asynctcpconn <- tcpconn{err, nil}
} else {
asynctcpconn <- tcpconn{nil, connfd}
}
}()
}
select {
case p := <-asynctcpconn:
asynctcpconn = nil
return p.fd, p.err
case <-t.C:
return nil, ErrTimeout
}
panic("Oops, unreachable")
}
func (s *server) Run(ready chan struct{}, externalListener chan error) (err error) {
var listener net.Listener
o := SimpleLogOutput{}
lf := NewSimpleLogFactory(o, nil)
o.Info(fmt.Sprintf("Listening on port %d...", s.port))
if listener, err = net.Listen("tcp", fmt.Sprintf("127.0.0.1:%d", s.port)); err != nil {
return
}
closeListener := make(chan error)
go func() {
<-closeListener
listener.Close()
}()
close(ready)
for {
var c net.Conn
if c, err = listener.Accept(); err != nil {
externalListener <- io.EOF
return
}
xp := NewTransport(c, lf, nil)
srv := NewServer(xp, nil)
srv.Register(createTestProtocol(newTestProtocol(c)))
srv.AddCloseListener(closeListener)
srv.Run(true)
}
return nil
}
func serveSingleCopy(name string, l net.Listener, dst io.Writer, src io.Reader) {
defer l.Close()
conn, err := l.Accept()
if err != nil {
log.Printf("'%s' accept error: %s", name, err)
return
}
// Be sure to close the connection after we're done copying so
// that an EOF will successfully be sent to the remote side
defer conn.Close()
// The connection is the destination/source that is nil
if dst == nil {
dst = conn
} else {
src = conn
}
written, err := io.Copy(dst, src)
log.Printf("%d bytes written for '%s'", written, name)
if err != nil {
log.Printf("'%s' copy error: %s", name, err)
}
}
func AcceptConns(listener net.Listener, socketChan chan net.Conn, errChan chan error) {
defer close(socketChan)
defer close(errChan)
var acceptDelay time.Duration
maxDelay := 1 * time.Second
for ok := true; ok; {
socket, err := listener.Accept()
if err == nil {
acceptDelay = 0
socketChan <- socket
continue
}
if netErr, ok := err.(net.Error); ok && netErr.Temporary() {
// Sleep on `Accept()` failures. Taken from `net/http/server.go`,
// Copyright 2009, The Go Authors.
if acceptDelay == 0 {
acceptDelay = 5 * time.Millisecond
} else {
acceptDelay *= 2
}
if acceptDelay > maxDelay {
acceptDelay = maxDelay
}
time.Sleep(acceptDelay)
continue
}
ok = false
errChan <- err
}
}
// server accepts incoming connections
func (s *ServerState) Serve(ln net.Listener) {
// Start sending worker updates at 1Hz
go s.sendWorkState(1)
// Start up our auto discover server
var a *discoveryServer
addr := ln.Addr()
if taddr, ok := addr.(*net.TCPAddr); ok {
var err error
a, err = newDiscoveryServer(taddr.Port)
if err != nil {
log.Print("Error starting auto-discovery", err)
return
}
defer a.stop()
}
// Incoming connections
for {
DebugPrint("Server accepting...")
conn, err := ln.Accept()
if err != nil {
log.Print(err)
continue
}
// Turn into a message conn
mc := NewMessageConn(conn, time.Duration(10)*time.Second)
// Spin off thread to handle the new connection
go s.handleConnection(mc)
}
}
func serve(listener net.Listener) {
certificate, err := tls.LoadX509KeyPair("server.crt", "server.key")
if err != nil {
panic(err)
}
for {
c, err := listener.Accept()
if err != nil {
log.Printf("accept: %s", err)
}
tlsConn := tls.Server(c, &tls.Config{
Certificates: []tls.Certificate{certificate},
})
if err := tlsConn.Handshake(); err != nil {
log.Printf("tls: %s", err)
}
go func() {
io.Copy(os.Stdout, tlsConn)
c.Close()
}()
go func() {
io.Copy(tlsConn, os.Stdin)
c.Close()
}()
}
}
func (proc *requestProcessor) Listen(l net.Listener) {
config := newConfig(proc.server)
timeout := time.Duration(0) // how long to sleep on accept failure
for {
rw, err := l.Accept()
if err != nil {
if netErr, ok := err.(net.Error); ok && netErr.Temporary() {
if timeout == 0 {
timeout = 5 * time.Millisecond
} else {
timeout *= 2
}
if max := 5 * time.Second; timeout > max {
timeout = max
}
log.Printf("stomp: Accept error: %v; retrying in %v", err, timeout)
time.Sleep(timeout)
continue
}
return
}
timeout = 0
// TODO: need to pass Server to connection so it has access to
// configuration parameters.
_ = client.NewConn(config, rw, proc.ch)
}
// This is no longer required for go 1.1
panic("not reached")
}
// ListenAndServe listens on l, accepts network connections, and
// handles requests according to the doozer protocol.
func ListenAndServe(l net.Listener, canWrite chan bool, st *store.Store, p consensus.Proposer, rwsk, rosk string, self string) {
var w bool
for {
c, err := l.Accept()
if err != nil {
if err == syscall.EINVAL {
break
}
if e, ok := err.(*net.OpError); ok && !e.Temporary() {
break
}
log.Println(err)
continue
}
// has this server become writable?
select {
case w = <-canWrite:
canWrite = nil
default:
}
go serve(c, st, p, w, rwsk, rosk, self)
}
}
func (cl *Client) acceptConnections(l net.Listener, utp bool) {
for {
cl.waitAccept()
conn, err := l.Accept()
conn = pproffd.WrapNetConn(conn)
if cl.closed.IsSet() {
if conn != nil {
conn.Close()
}
return
}
if err != nil {
log.Print(err)
// I think something harsher should happen here? Our accept
// routine just f****d off.
return
}
if utp {
acceptUTP.Add(1)
} else {
acceptTCP.Add(1)
}
cl.mu.RLock()
reject := cl.badPeerIPPort(
missinggo.AddrIP(conn.RemoteAddr()),
missinggo.AddrPort(conn.RemoteAddr()))
cl.mu.RUnlock()
if reject {
acceptReject.Add(1)
conn.Close()
continue
}
go cl.incomingConnection(conn, utp)
}
}
func transponder(t *testing.T, ln net.Listener, done chan<- int) {
defer func() { done <- 1 }()
c, err := ln.Accept()
if err != nil {
t.Errorf("net.Listener.Accept failed: %v", err)
return
}
c.LocalAddr()
c.RemoteAddr()
c.SetDeadline(time.Now().Add(100 * time.Millisecond))
c.SetReadDeadline(time.Now().Add(100 * time.Millisecond))
c.SetWriteDeadline(time.Now().Add(100 * time.Millisecond))
defer c.Close()
b := make([]byte, 128)
n, err := c.Read(b)
if err != nil {
t.Errorf("net.Conn.Read failed: %v", err)
return
}
if _, err := c.Write(b[:n]); err != nil {
t.Errorf("net.Conn.Write failed: %v", err)
return
}
}
// serve connections on this listener until it is closed.
func (s *Server) serve(ln net.Listener) {
for {
conn, err := ln.Accept()
if err != nil {
if !s.isClosing() {
log.Error(err)
}
return
}
s.mu.Lock()
s.conns[conn] = struct{}{}
s.mu.Unlock()
go func() {
defer func() {
s.mu.Lock()
delete(s.conns, conn)
s.mu.Unlock()
conn.Close()
}()
if err := s.serveConn(conn); err != nil {
if err != io.EOF && !s.isClosing() {
log.Error(err)
}
}
}()
}
}
func (srv *Server) Serve(l net.Listener) error {
defer l.Close()
var tempDelay time.Duration
for {
rw, e := l.Accept()
if e != nil {
if ne, ok := e.(net.Error); ok && ne.Temporary() {
if tempDelay == 0 {
tempDelay = 5 * time.Millisecond
} else {
tempDelay *= 2
}
if max := 1 * time.Second; tempDelay > max {
tempDelay = max
}
srv.logf("smtp: Accept error: %v; retrying in %v", e, tempDelay)
time.Sleep(tempDelay)
continue
}
return e
}
tempDelay = 0
c, err := srv.newConn(rw)
if err != nil {
continue
}
go c.serve()
}
}
func GoServe(t *testing.T, tr smux.Transport, l net.Listener) (done func()) {
closed := make(chan struct{}, 1)
go func() {
for {
c1, err := l.Accept()
if err != nil {
select {
case <-closed:
return // closed naturally.
default:
checkErr(t, err)
}
}
log("accepted connection")
sc1, err := tr.NewConn(c1, true)
checkErr(t, err)
go sc1.Serve(echoStream)
}
}()
return func() {
closed <- struct{}{}
}
}
// Serve accepts incoming connections on the listener lis, creating a new
// ServerTransport and service goroutine for each. The service goroutines
// read gRPC requests and then call the registered handlers to reply to them.
// Service returns when lis.Accept fails.
func (s *Server) Serve(lis net.Listener) error {
s.mu.Lock()
s.printf("serving")
if s.lis == nil {
s.mu.Unlock()
return ErrServerStopped
}
s.lis[lis] = true
s.mu.Unlock()
defer func() {
lis.Close()
s.mu.Lock()
delete(s.lis, lis)
s.mu.Unlock()
}()
for {
rawConn, err := lis.Accept()
if err != nil {
s.mu.Lock()
s.printf("done serving; Accept = %v", err)
s.mu.Unlock()
return err
}
// Start a new goroutine to deal with rawConn
// so we don't stall this Accept loop goroutine.
go s.handleRawConn(rawConn)
}
}
func LoopListen(bind string, chanConn chan net.Conn) {
var listener net.Listener
var err error
for {
logf("Listen on %s", bind)
listener, err = net.Listen("tcp", bind)
if err != nil {
logf(err.Error())
time.Sleep(time.Second)
continue
}
for {
conn, err := listener.Accept()
if err != nil {
logf(err.Error())
continue
}
go func(conn net.Conn) {
logf("Got Connection on %s", bind)
chanConn <- conn
}(conn)
}
}
}
