/*
 * MinIO Cloud Storage, (C) 2018 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 (
	"net"
	"time"
)

// TimeoutConn - is wrapped net.Conn with read/write timeouts.
type TimeoutConn struct {
	QuirkConn
	readTimeout  time.Duration
	writeTimeout time.Duration
}

func (c *TimeoutConn) setReadTimeout() {
	if c.readTimeout != 0 && c.canSetReadDeadline() {
		c.SetReadDeadline(time.Now().UTC().Add(c.readTimeout))
	}
}

func (c *TimeoutConn) setWriteTimeout() {
	if c.writeTimeout != 0 {
		c.SetWriteDeadline(time.Now().UTC().Add(c.writeTimeout))
	}
}

// Read - reads data from the connection with timeout.
func (c *TimeoutConn) Read(b []byte) (n int, err error) {
	c.setReadTimeout()
	return c.Conn.Read(b)
}

// Write - writes data to the connection with timeout.
func (c *TimeoutConn) Write(b []byte) (n int, err error) {
	c.setWriteTimeout()
	return c.Conn.Write(b)
}

// NewTimeoutConn - creates a new timeout connection.
func NewTimeoutConn(c net.Conn, readTimeout, writeTimeout time.Duration) *TimeoutConn {
	return &TimeoutConn{
		QuirkConn:    QuirkConn{Conn: c},
		readTimeout:  readTimeout,
		writeTimeout: writeTimeout,
	}
}