diff options
Diffstat (limited to 'vendor/google.golang.org/appengine/internal/net.go')
| -rw-r--r-- | vendor/google.golang.org/appengine/internal/net.go | 56 | 
1 files changed, 0 insertions, 56 deletions
diff --git a/vendor/google.golang.org/appengine/internal/net.go b/vendor/google.golang.org/appengine/internal/net.go deleted file mode 100644 index fe42972..0000000 --- a/vendor/google.golang.org/appengine/internal/net.go +++ /dev/null @@ -1,56 +0,0 @@ -// Copyright 2014 Google Inc. All rights reserved. -// Use of this source code is governed by the Apache 2.0 -// license that can be found in the LICENSE file. - -package internal - -// This file implements a network dialer that limits the number of concurrent connections. -// It is only used for API calls. - -import ( -	"log" -	"net" -	"runtime" -	"sync" -	"time" -) - -var limitSem = make(chan int, 100) // TODO(dsymonds): Use environment variable. - -func limitRelease() { -	// non-blocking -	select { -	case <-limitSem: -	default: -		// This should not normally happen. -		log.Print("appengine: unbalanced limitSem release!") -	} -} - -func limitDial(network, addr string) (net.Conn, error) { -	limitSem <- 1 - -	// Dial with a timeout in case the API host is MIA. -	// The connection should normally be very fast. -	conn, err := net.DialTimeout(network, addr, 10*time.Second) -	if err != nil { -		limitRelease() -		return nil, err -	} -	lc := &limitConn{Conn: conn} -	runtime.SetFinalizer(lc, (*limitConn).Close) // shouldn't usually be required -	return lc, nil -} - -type limitConn struct { -	close sync.Once -	net.Conn -} - -func (lc *limitConn) Close() error { -	defer lc.close.Do(func() { -		limitRelease() -		runtime.SetFinalizer(lc, nil) -	}) -	return lc.Conn.Close() -}  | 
