зеркало из https://github.com/github/vitess-gh.git
73 строки
2.2 KiB
Go
73 строки
2.2 KiB
Go
/*
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Copyright 2019 The Vitess Authors.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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 netutil
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import (
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"net"
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"time"
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)
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var _ net.Conn = (*ConnWithTimeouts)(nil)
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// A ConnWithTimeouts is a wrapper to net.Comm that allows to set a read and write timeouts.
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type ConnWithTimeouts struct {
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net.Conn
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readTimeout time.Duration
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writeTimeout time.Duration
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}
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// NewConnWithTimeouts wraps a net.Conn with read and write deadilnes.
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func NewConnWithTimeouts(conn net.Conn, readTimeout time.Duration, writeTimeout time.Duration) ConnWithTimeouts {
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return ConnWithTimeouts{Conn: conn, readTimeout: readTimeout, writeTimeout: writeTimeout}
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}
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// Implementation of the Conn interface.
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// Read sets a read deadilne and delegates to conn.Read.
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func (c ConnWithTimeouts) Read(b []byte) (int, error) {
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if c.readTimeout == 0 {
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return c.Conn.Read(b)
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}
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if err := c.Conn.SetReadDeadline(time.Now().Add(c.readTimeout)); err != nil {
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return 0, err
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}
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return c.Conn.Read(b)
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}
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// Write sets a write deadline and delegates to conn.Write
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func (c ConnWithTimeouts) Write(b []byte) (int, error) {
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if c.writeTimeout == 0 {
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return c.Conn.Write(b)
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}
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if err := c.Conn.SetWriteDeadline(time.Now().Add(c.writeTimeout)); err != nil {
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return 0, err
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}
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return c.Conn.Write(b)
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}
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// SetDeadline implements the Conn SetDeadline method.
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func (c ConnWithTimeouts) SetDeadline(t time.Time) error {
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panic("can't call SetDeadline for ConnWithTimeouts")
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}
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// SetReadDeadline implements the Conn SetReadDeadline method.
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func (c ConnWithTimeouts) SetReadDeadline(t time.Time) error {
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panic("can't call SetReadDeadline for ConnWithTimeouts")
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}
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// SetWriteDeadline implements the Conn SetWriteDeadline method.
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func (c ConnWithTimeouts) SetWriteDeadline(t time.Time) error {
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panic("can't call SetWriteDeadline for ConnWithTimeouts")
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}
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