diff options
Diffstat (limited to 'vendor/golang.org/x/net/netutil/listen.go')
-rw-r--r-- | vendor/golang.org/x/net/netutil/listen.go | 48 |
1 files changed, 0 insertions, 48 deletions
diff --git a/vendor/golang.org/x/net/netutil/listen.go b/vendor/golang.org/x/net/netutil/listen.go deleted file mode 100644 index 56f43bf65..000000000 --- a/vendor/golang.org/x/net/netutil/listen.go +++ /dev/null @@ -1,48 +0,0 @@ -// Copyright 2013 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// Package netutil provides network utility functions, complementing the more -// common ones in the net package. -package netutil // import "golang.org/x/net/netutil" - -import ( - "net" - "sync" -) - -// LimitListener returns a Listener that accepts at most n simultaneous -// connections from the provided Listener. -func LimitListener(l net.Listener, n int) net.Listener { - return &limitListener{l, make(chan struct{}, n)} -} - -type limitListener struct { - net.Listener - sem chan struct{} -} - -func (l *limitListener) acquire() { l.sem <- struct{}{} } -func (l *limitListener) release() { <-l.sem } - -func (l *limitListener) Accept() (net.Conn, error) { - l.acquire() - c, err := l.Listener.Accept() - if err != nil { - l.release() - return nil, err - } - return &limitListenerConn{Conn: c, release: l.release}, nil -} - -type limitListenerConn struct { - net.Conn - releaseOnce sync.Once - release func() -} - -func (l *limitListenerConn) Close() error { - err := l.Conn.Close() - l.releaseOnce.Do(l.release) - return err -} |