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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.
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
}
so, ok := sockOpts[ssoTOS]
if !ok {
return 0, errOpNoSupport
}
return so.GetInt(c.Conn)
}
// 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
}
so, ok := sockOpts[ssoTOS]
if !ok {
return errOpNoSupport
}
return so.SetInt(c.Conn, 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
}
so, ok := sockOpts[ssoTTL]
if !ok {
return 0, errOpNoSupport
}
return so.GetInt(c.Conn)
}
// 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
}
so, ok := sockOpts[ssoTTL]
if !ok {
return errOpNoSupport
}
return so.SetInt(c.Conn, ttl)
}
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