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// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build darwin dragonfly freebsd linux netbsd openbsd windows
package ipv4
import "syscall"
// TOS returns the type-of-service field value for outgoing packets.
func (c *genericOpt) TOS() (int, error) {
if !c.ok() {
return 0, syscall.EINVAL
}
fd, err := c.sysfd()
if err != nil {
return 0, err
}
return getInt(fd, &sockOpts[ssoTOS])
}
// SetTOS sets the type-of-service field value for future outgoing
// packets.
func (c *genericOpt) SetTOS(tos int) error {
if !c.ok() {
return syscall.EINVAL
}
fd, err := c.sysfd()
if err != nil {
return err
}
return setInt(fd, &sockOpts[ssoTOS], tos)
}
// TTL returns the time-to-live field value for outgoing packets.
func (c *genericOpt) TTL() (int, error) {
if !c.ok() {
return 0, syscall.EINVAL
}
fd, err := c.sysfd()
if err != nil {
return 0, err
}
return getInt(fd, &sockOpts[ssoTTL])
}
// SetTTL sets the time-to-live field value for future outgoing
// packets.
func (c *genericOpt) SetTTL(ttl int) error {
if !c.ok() {
return syscall.EINVAL
}
fd, err := c.sysfd()
if err != nil {
return err
}
return setInt(fd, &sockOpts[ssoTTL], ttl)
}
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