ns-3
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Packet header for UDP packets. More...
#include <udp-header.h>
Public Member Functions | |
UdpHeader () | |
Constructor. | |
void | EnableChecksums (void) |
Enable checksum calculation for UDP. | |
void | SetDestinationPort (uint16_t port) |
void | SetSourcePort (uint16_t port) |
uint16_t | GetSourcePort (void) const |
uint16_t | GetDestinationPort (void) const |
void | InitializeChecksum (Address source, Address destination, uint8_t protocol) |
void | InitializeChecksum (Ipv4Address source, Ipv4Address destination, uint8_t protocol) |
void | InitializeChecksum (Ipv6Address source, Ipv6Address destination, uint8_t protocol) |
virtual TypeId | GetInstanceTypeId (void) const |
virtual void | Print (std::ostream &os) const |
virtual uint32_t | GetSerializedSize (void) const |
virtual void | Serialize (Buffer::Iterator start) const |
virtual uint32_t | Deserialize (Buffer::Iterator start) |
bool | IsChecksumOk (void) const |
Is the UDP checksum correct ? |
Static Public Member Functions | |
static TypeId | GetTypeId (void) |
This method returns the TypeId associated to ns3::UdpHeader. |
Packet header for UDP packets.
This class has fields corresponding to those in a network UDP header (port numbers, payload size, checksum) as well as methods for serialization to and deserialization from a byte buffer.
ns3::UdpHeader::UdpHeader | ( | ) |
Constructor.
Creates a null header
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virtual |
start | an iterator which points to where the header should written. |
This method is used by Packet::RemoveHeader to re-create a header from the byte buffer of a packet. The data read is expected to match bit-for-bit the representation of this header in real networks.
Implements ns3::Header.
References ns3::Buffer::Iterator::CalculateIpChecksum(), GetSerializedSize(), ns3::Buffer::Iterator::GetSize(), ns3::Buffer::Iterator::Next(), and ns3::Buffer::Iterator::ReadNtohU16().
uint16_t ns3::UdpHeader::GetDestinationPort | ( | void | ) | const |
Referenced by ns3::IpcsClassifier::Classify(), ns3::Ipv4FlowClassifier::Classify(), ns3::EpcTftClassifier::Classify(), and ns3::UdpL4Protocol::Receive().
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virtual |
This method is typically implemented by ns3::Object::GetInstanceTypeId but some classes which derive from ns3::ObjectBase directly have to implement it themselves.
Implements ns3::ObjectBase.
References GetTypeId().
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virtual |
This method is used by Packet::AddHeader to store a header into the byte buffer of a packet. This method should return the number of bytes which are needed to store the full header data by Serialize.
Implements ns3::Header.
Referenced by Deserialize(), and Print().
uint16_t ns3::UdpHeader::GetSourcePort | ( | void | ) | const |
Referenced by ns3::IpcsClassifier::Classify(), ns3::Ipv4FlowClassifier::Classify(), ns3::EpcTftClassifier::Classify(), and ns3::UdpL4Protocol::Receive().
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static |
This method returns the TypeId associated to ns3::UdpHeader.
No Attributes defined for this type.
No TraceSources defined for this type.
Reimplemented from ns3::Header.
References ns3::TypeId::SetParent().
Referenced by GetInstanceTypeId().
source | the ip source to use in the underlying ip packet. |
destination | the ip destination to use in the underlying ip packet. |
protocol | the protocol number to use in the underlying ip packet. |
If you want to use udp checksums, you should call this method prior to adding the header to a packet.
Referenced by ns3::UdpL4Protocol::Receive(), and ns3::UdpL4Protocol::Send().
void ns3::UdpHeader::InitializeChecksum | ( | Ipv4Address | source, |
Ipv4Address | destination, | ||
uint8_t | protocol | ||
) |
source | the ip source to use in the underlying ip packet. |
destination | the ip destination to use in the underlying ip packet. |
protocol | the protocol number to use in the underlying ip packet. |
If you want to use udp checksums, you should call this method prior to adding the header to a packet.
void ns3::UdpHeader::InitializeChecksum | ( | Ipv6Address | source, |
Ipv6Address | destination, | ||
uint8_t | protocol | ||
) |
source | the ip source to use in the underlying ip packet. |
destination | the ip destination to use in the underlying ip packet. |
protocol | the protocol number to use in the underlying ip packet. |
If you want to use udp checksums, you should call this method prior to adding the header to a packet.
bool ns3::UdpHeader::IsChecksumOk | ( | void | ) | const |
Is the UDP checksum correct ?
Referenced by ns3::UdpL4Protocol::Receive().
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virtual |
os | output stream This method is used by Packet::Print to print the content of a trailer as ascii data to a c++ output stream. Although the trailer is free to format its output as it wishes, it is recommended to follow a few rules to integrate with the packet pretty printer: start with flags, small field values located between a pair of parens. Values should be separated by whitespace. Follow the parens with the important fields, separated by whitespace. i.e.: (field1 val1 field2 val2 field3 val3) field4 val4 field5 val5 |
Implements ns3::Header.
References GetSerializedSize().
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virtual |
start | an iterator which points to where the header should be written. |
This method is used by Packet::AddHeader to store a header into the byte buffer of a packet. The data written is expected to match bit-for-bit the representation of this header in a real network.
Implements ns3::Header.
References ns3::Buffer::Iterator::CalculateIpChecksum(), ns3::Buffer::Iterator::GetSize(), ns3::Buffer::Iterator::Next(), ns3::Buffer::Iterator::WriteHtonU16(), and ns3::Buffer::Iterator::WriteU16().
void ns3::UdpHeader::SetDestinationPort | ( | uint16_t | port | ) |
port | the destination port for this UdpHeader |
Referenced by ns3::UdpL4Protocol::Send().
void ns3::UdpHeader::SetSourcePort | ( | uint16_t | port | ) |
port | The source port for this UdpHeader |
Referenced by ns3::UdpL4Protocol::Send().