golang open files 是keepalives的问题.

session.go

@@ -178,6 +178,8 @@ func NewSession() *Session {
 	client := &http.Client{}
 	transport := &http.Transport{DisableCompression: true, DisableKeepAlives: true}
 
+	EnsureTransporterFinalized(transport)
+
 	client.Transport = transport
 	cjar, err := cookiejar.New(&cookiejar.Options{PublicSuffixList: publicsuffix.List})
 	if err != nil {
@@ -361,16 +363,15 @@ func (ses *Session) Delete(url string) *Workflow {
 	return wf
 }
 
-// CloseIdleConnections  closes the idle connections that a session client may make use of
-// 从levigross/grequests 借鉴
-func (ses *Session) CloseIdleConnections() {
-	ses.client.Transport.(*http.Transport).CloseIdleConnections()
-}
+// // CloseIdleConnections  closes the idle connections that a session client may make use of
+// // 从levigross/grequests 借鉴
+// func (ses *Session) CloseIdleConnections() {
+// 	ses.client.Transport.(*http.Transport).CloseIdleConnections()
+// }
 
 // EnsureTransporterFinalized will ensure that when the HTTP client is GCed
 // the runtime will close the idle connections (so that they won't leak)
 // this function was adopted from Hashicorp's go-cleanhttp package
-// 暂时不用, 标记到以后是否起作用
 func EnsureTransporterFinalized(httpTransport *http.Transport) {
 	runtime.SetFinalizer(&httpTransport, func(transportInt **http.Transport) {
 		(*transportInt).CloseIdleConnections()