mirror of
https://github.com/minio/minio.git
synced 2024-12-26 07:05:55 -05:00
102 lines
3.2 KiB
Go
102 lines
3.2 KiB
Go
/*
|
|
* Minio Cloud Storage, (C) 2017 Minio, 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 http
|
|
|
|
import (
|
|
"bufio"
|
|
"net"
|
|
"time"
|
|
)
|
|
|
|
// BufConn - is a generic stream-oriented network connection supporting buffered reader and read/write timeout.
|
|
type BufConn struct {
|
|
QuirkConn
|
|
bufReader *bufio.Reader // buffered reader wraps reader in net.Conn.
|
|
readTimeout time.Duration // sets the read timeout in the connection.
|
|
writeTimeout time.Duration // sets the write timeout in the connection.
|
|
updateBytesReadFunc func(int) // function to be called to update bytes read.
|
|
updateBytesWrittenFunc func(int) // function to be called to update bytes written.
|
|
}
|
|
|
|
// Sets read timeout
|
|
func (c *BufConn) setReadTimeout() {
|
|
if c.readTimeout != 0 && c.canSetReadDeadline() {
|
|
c.SetReadDeadline(time.Now().UTC().Add(c.readTimeout))
|
|
}
|
|
}
|
|
|
|
func (c *BufConn) setWriteTimeout() {
|
|
if c.writeTimeout != 0 {
|
|
c.SetWriteDeadline(time.Now().UTC().Add(c.writeTimeout))
|
|
}
|
|
}
|
|
|
|
// RemoveTimeout - removes all configured read and write
|
|
// timeouts. Used by callers which control net.Conn behavior
|
|
// themselves.
|
|
func (c *BufConn) RemoveTimeout() {
|
|
c.readTimeout = 0
|
|
c.writeTimeout = 0
|
|
// Unset read/write timeouts, since we use **bufio** it is not
|
|
// guaranteed that the underlying Peek/Read operation in-fact
|
|
// indeed performed a Read() operation on the network. With
|
|
// that in mind we need to unset any timeouts currently set to
|
|
// avoid any pre-mature timeouts.
|
|
c.SetDeadline(time.Time{})
|
|
}
|
|
|
|
// Peek - returns the next n bytes without advancing the reader. It just wraps bufio.Reader.Peek().
|
|
func (c *BufConn) Peek(n int) ([]byte, error) {
|
|
c.setReadTimeout()
|
|
return c.bufReader.Peek(n)
|
|
}
|
|
|
|
// Read - reads data from the connection using wrapped buffered reader.
|
|
func (c *BufConn) Read(b []byte) (n int, err error) {
|
|
c.setReadTimeout()
|
|
n, err = c.bufReader.Read(b)
|
|
if err == nil && c.updateBytesReadFunc != nil {
|
|
c.updateBytesReadFunc(n)
|
|
}
|
|
|
|
return n, err
|
|
}
|
|
|
|
// Write - writes data to the connection.
|
|
func (c *BufConn) Write(b []byte) (n int, err error) {
|
|
c.setWriteTimeout()
|
|
n, err = c.Conn.Write(b)
|
|
if err == nil && c.updateBytesWrittenFunc != nil {
|
|
c.updateBytesWrittenFunc(n)
|
|
}
|
|
|
|
return n, err
|
|
}
|
|
|
|
// newBufConn - creates a new connection object wrapping net.Conn.
|
|
func newBufConn(c net.Conn, readTimeout, writeTimeout time.Duration,
|
|
updateBytesReadFunc, updateBytesWrittenFunc func(int)) *BufConn {
|
|
return &BufConn{
|
|
QuirkConn: QuirkConn{Conn: c},
|
|
bufReader: bufio.NewReader(c),
|
|
readTimeout: readTimeout,
|
|
writeTimeout: writeTimeout,
|
|
updateBytesReadFunc: updateBytesReadFunc,
|
|
updateBytesWrittenFunc: updateBytesWrittenFunc,
|
|
}
|
|
}
|