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49 lines
1.5 KiB
49 lines
1.5 KiB
8 years ago
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/*
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* Minio Cloud Storage, (C) 2017 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package http
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import (
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"net"
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"sync/atomic"
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"time"
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)
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// QuirkConn - similar to golang net.Conn struct, but contains a workaround of the
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// following the go bug reported here https://github.com/golang/go/issues/21133.
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// Once the bug will be fixed, we can remove this structure and replaces it with
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// the standard net.Conn
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type QuirkConn struct {
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net.Conn
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hadReadDeadlineInPast int32 // atomic
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}
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// SetReadDeadline - implements a workaround of SetReadDeadline go bug
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func (q *QuirkConn) SetReadDeadline(t time.Time) error {
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inPast := int32(0)
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if t.Before(time.Now()) {
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inPast = 1
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}
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atomic.StoreInt32(&q.hadReadDeadlineInPast, inPast)
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return q.Conn.SetReadDeadline(t)
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}
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// canSetReadDeadline - returns if it is safe to set a new
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// read deadline without triggering golang/go#21133 issue.
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func (q *QuirkConn) canSetReadDeadline() bool {
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return atomic.LoadInt32(&q.hadReadDeadlineInPast) != 1
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}
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