go-omaha/omaha/isclosed.go

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// Copyright 2016 CoreOS, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package omaha
import (
"net"
)
// isClosed detects if an error is due to a closed network connection,
// working around bug https://github.com/golang/go/issues/4373
func isClosed(err error) bool {
if err == nil {
return false
}
if operr, ok := err.(*net.OpError); ok {
err = operr.Err
}
// cry softly
return err.Error() == "use of closed network connection"
}