Source file src/golang.org/x/net/ipv4/genericopt.go

Documentation: golang.org/x/net/ipv4

     1  // Copyright 2012 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package ipv4
     6  
     7  // TOS returns the type-of-service field value for outgoing packets.
     8  func (c *genericOpt) TOS() (int, error) {
     9  	if !c.ok() {
    10  		return 0, errInvalidConn
    11  	}
    12  	so, ok := sockOpts[ssoTOS]
    13  	if !ok {
    14  		return 0, errNotImplemented
    15  	}
    16  	return so.GetInt(c.Conn)
    17  }
    18  
    19  // SetTOS sets the type-of-service field value for future outgoing
    20  // packets.
    21  func (c *genericOpt) SetTOS(tos int) error {
    22  	if !c.ok() {
    23  		return errInvalidConn
    24  	}
    25  	so, ok := sockOpts[ssoTOS]
    26  	if !ok {
    27  		return errNotImplemented
    28  	}
    29  	return so.SetInt(c.Conn, tos)
    30  }
    31  
    32  // TTL returns the time-to-live field value for outgoing packets.
    33  func (c *genericOpt) TTL() (int, error) {
    34  	if !c.ok() {
    35  		return 0, errInvalidConn
    36  	}
    37  	so, ok := sockOpts[ssoTTL]
    38  	if !ok {
    39  		return 0, errNotImplemented
    40  	}
    41  	return so.GetInt(c.Conn)
    42  }
    43  
    44  // SetTTL sets the time-to-live field value for future outgoing
    45  // packets.
    46  func (c *genericOpt) SetTTL(ttl int) error {
    47  	if !c.ok() {
    48  		return errInvalidConn
    49  	}
    50  	so, ok := sockOpts[ssoTTL]
    51  	if !ok {
    52  		return errNotImplemented
    53  	}
    54  	return so.SetInt(c.Conn, ttl)
    55  }
    56  

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