internal static bool ParseMessageDataToFields(DataSegment messageData, out ushort sequenceNumber,
out bool acknowledge, out bool homeRegistration, out bool linkLocalAddressCompatibility,
out bool keyManagementMobilityCapability, out ushort lifetime, out IpV6MobilityOptions options)
{
if (messageData.Length < MinimumMessageDataLength)
{
sequenceNumber = 0;
acknowledge = false;
homeRegistration = false;
linkLocalAddressCompatibility = false;
keyManagementMobilityCapability = false;
lifetime = 0;
options = null;
return(false);
}
sequenceNumber = messageData.ReadUShort(MessageDataOffset.SequenceNumber, Endianity.Big);
acknowledge = messageData.ReadBool(MessageDataOffset.Acknowledge, MessageDataMask.Acknowledge);
homeRegistration = messageData.ReadBool(MessageDataOffset.HomeRegistration, MessageDataMask.HomeRegistration);
linkLocalAddressCompatibility = messageData.ReadBool(MessageDataOffset.LinkLocalAddressCompatibility, MessageDataMask.LinkLocalAddressCompatibility);
keyManagementMobilityCapability = messageData.ReadBool(MessageDataOffset.KeyManagementMobilityCapability,
MessageDataMask.KeyManagementMobilityCapability);
lifetime = messageData.ReadUShort(MessageDataOffset.Lifetime, Endianity.Big);
options = new IpV6MobilityOptions(messageData.Subsegment(MessageDataOffset.Options, messageData.Length - MessageDataOffset.Options));
return(true);
}
internal static IpV6ExtensionHeaderMobilityHomeAgentSwitchMessage ParseMessageData(IpV4Protocol nextHeader, ushort checksum, DataSegment messageData)
{
if (messageData.Length < MinimumMessageDataLength)
{
return(null);
}
byte numberOfAddresses = messageData[MessageDataOffset.NumberOfAddresses];
int homeAgentAddressesSize = numberOfAddresses * IpV6Address.SizeOf;
if (messageData.Length < MinimumMessageDataLength + homeAgentAddressesSize)
{
return(null);
}
IpV6Address[] homeAgentAddresses = new IpV6Address[numberOfAddresses];
for (int i = 0; i != numberOfAddresses; ++i)
{
homeAgentAddresses[i] = messageData.ReadIpV6Address(MessageDataOffset.HomeAgentAddresses + i * IpV6Address.SizeOf, Endianity.Big);
}
int optionsOffset = MessageDataOffset.HomeAgentAddresses + homeAgentAddressesSize;
IpV6MobilityOptions options = new IpV6MobilityOptions(messageData.Subsegment(optionsOffset, messageData.Length - optionsOffset));
return(new IpV6ExtensionHeaderMobilityHomeAgentSwitchMessage(nextHeader, checksum, homeAgentAddresses, options));
}
internal IpV6ExtensionHeaderMobilityLocalizedRouting(IpV4Protocol?nextHeader, ushort checksum, ushort sequenceNumber, ushort lifetime,
IpV6MobilityOptions options)
: base(nextHeader, checksum, options, MessageDataOffset.Options)
{
SequenceNumber = sequenceNumber;
Lifetime = lifetime;
}
internal static IpV6ExtensionHeaderMobilityBindingRevocationMessage ParseMessageData(IpV4Protocol nextHeader, ushort checksum, DataSegment messageData)
{
if (messageData.Length < MinimumMessageDataLength)
{
return(null);
}
IpV6MobilityBindingRevocationType bindingRevocationType = (IpV6MobilityBindingRevocationType)messageData[MessageDataOffset.BindingRevocationType];
byte revocationTriggerOrStatus = messageData[MessageDataOffset.RevocationTriggerOrStatus];
ushort sequenceNumber = messageData.ReadUShort(MessageDataOffset.SequenceNumber, Endianity.Big);
bool proxyBinding = messageData.ReadBool(MessageDataOffset.ProxyBinding, MessageDataMask.ProxyBinding);
bool ipV4HomeAddressBindingOnly = messageData.ReadBool(MessageDataOffset.IpV4HomeAddressBindingOnly, MessageDataMask.IpV4HomeAddressBindingOnly);
bool global = messageData.ReadBool(MessageDataOffset.Global, MessageDataMask.Global);
IpV6MobilityOptions options =
new IpV6MobilityOptions(messageData.Subsegment(MessageDataOffset.Options, messageData.Length - MessageDataOffset.Options));
switch (bindingRevocationType)
{
case IpV6MobilityBindingRevocationType.BindingRevocationIndication:
return(new IpV6ExtensionHeaderMobilityBindingRevocationIndicationMessage(nextHeader, checksum, (Ipv6MobilityBindingRevocationTrigger)revocationTriggerOrStatus, sequenceNumber,
proxyBinding, ipV4HomeAddressBindingOnly, global, options));
case IpV6MobilityBindingRevocationType.BindingRevocationAcknowledgement:
return(new IpV6ExtensionHeaderMobilityBindingRevocationAcknowledgementMessage(nextHeader, checksum,
(Ipv6MobilityBindingRevocationStatus)revocationTriggerOrStatus,
sequenceNumber, proxyBinding, ipV4HomeAddressBindingOnly,
global, options));
default:
return(null);
}
}
/// <summary>
/// Creates an instance from next header, checksum, status, home address and options.
/// </summary>
/// <param name="nextHeader">
/// Identifies the type of header immediately following this extension header.
/// </param>
/// <param name="checksum">
/// Contains the checksum of the Mobility Header.
/// The checksum is calculated from the octet string consisting of a "pseudo-header"
/// followed by the entire Mobility Header starting with the Payload Proto field.
/// The checksum is the 16-bit one's complement of the one's complement sum of this string.
/// </param>
/// <param name="status">Indicating the reason for this message.</param>
/// <param name="homeAddress">
/// The home address that was contained in the Home Address destination option.
/// The mobile node uses this information to determine which binding does not exist, in cases where the mobile node has several home addresses.
/// </param>
/// <param name="options">
/// Zero or more TLV-encoded mobility options.
/// </param>
public IpV6ExtensionHeaderMobilityBindingError(IpV4Protocol?nextHeader, ushort checksum, IpV6BindingErrorStatus status, IpV6Address homeAddress,
IpV6MobilityOptions options)
: base(nextHeader, checksum, options, MessageDataOffset.Options)
{
Status = status;
HomeAddress = homeAddress;
}
/// <summary>
/// Creates an instance from next header, checksum, revocation trigger, sequence number, proxy binding, IPv4 home address binding only, global
/// and options.
/// </summary>
/// <param name="nextHeader">
/// Identifies the type of header immediately following this extension header.
/// </param>
/// <param name="checksum">
/// Contains the checksum of the Mobility Header.
/// The checksum is calculated from the octet string consisting of a "pseudo-header"
/// followed by the entire Mobility Header starting with the Payload Proto field.
/// The checksum is the 16-bit one's complement of the one's complement sum of this string.
/// </param>
/// <param name="revocationTrigger">
/// Indicating the event that triggered the initiator to send the BRI message.
/// </param>
/// <param name="sequenceNumber">
/// Used by the initiator to match a returned Binding Revocation Acknowledgement with this Binding Revocation Indication.
/// This sequence number could be a random number.
/// At any time, implementations must ensure there is no collision between the sequence numbers of all outstanding Binding Revocation Indication
/// Messages.
/// </param>
/// <param name="proxyBinding">
/// Set by the initiator to indicate that the revoked binding(s) is a PMIPv6 binding.
/// </param>
/// <param name="ipV4HomeAddressBindingOnly">
/// Set by the initiator, home agent, or local mobility anchor to indicate to the receiving mobility entity the termination
/// of the IPv4 Home Address binding only as in Home Agent Operation and Local Mobility Anchor Operation.
/// </param>
/// <param name="global">
/// Set by the initiator, LMA or MAG, to indicate the termination of all Per-Peer mobility Bindings or Multiple Bindings that share
/// a common identifier(s) and are served by the initiator and responder as in Local Mobility Anchor Operation and Mobile Access Gateway Operation.
/// </param>
/// <param name="options">
/// Zero or more TLV-encoded mobility options.
/// </param>
public IpV6ExtensionHeaderMobilityBindingRevocationIndicationMessage(IpV4Protocol?nextHeader, ushort checksum,
Ipv6MobilityBindingRevocationTrigger revocationTrigger, ushort sequenceNumber,
bool proxyBinding, bool ipV4HomeAddressBindingOnly, bool global,
IpV6MobilityOptions options)
: base(nextHeader, checksum, sequenceNumber, proxyBinding, ipV4HomeAddressBindingOnly, global, options)
{
RevocationTrigger = revocationTrigger;
}
/// <summary>
/// Creates an instance from next header, checksum, care of nonce index, care of init cookie, care of keygen token and options.
/// </summary>
/// <param name="nextHeader">Identifies the type of header immediately following this extension header.</param>
/// <param name="checksum">
/// Contains the checksum of the Mobility Header.
/// The checksum is calculated from the octet string consisting of a "pseudo-header"
/// followed by the entire Mobility Header starting with the Payload Proto field.
/// The checksum is the 16-bit one's complement of the one's complement sum of this string.
/// </param>
/// <param name="careOfNonceIndex">Will be echoed back by the mobile node to the correspondent node in a subsequent Binding Update.</param>
/// <param name="careOfInitCookie">Contains the care-of init cookie.</param>
/// <param name="careOfKeygenToken">Contains the 64-bit care-of keygen token used in the return routability procedure.</param>
/// <param name="options">Zero or more TLV-encoded mobility options.</param>
public IpV6ExtensionHeaderMobilityCareOfTest(IpV4Protocol?nextHeader, ushort checksum, ushort careOfNonceIndex, ulong careOfInitCookie,
ulong careOfKeygenToken, IpV6MobilityOptions options)
: base(nextHeader, checksum, options, MessageDataOffset.Options)
{
CareOfNonceIndex = careOfNonceIndex;
CareOfInitCookie = careOfInitCookie;
CareOfKeygenToken = careOfKeygenToken;
}
/// <summary>
/// Creates an instance from next header, checksum, home nonce index, home init cookie, home keygen token and options.
/// </summary>
/// <param name="nextHeader">Identifies the type of header immediately following this extension header.</param>
/// <param name="checksum">
/// Contains the checksum of the Mobility Header.
/// The checksum is calculated from the octet string consisting of a "pseudo-header"
/// followed by the entire Mobility Header starting with the Payload Proto field.
/// The checksum is the 16-bit one's complement of the one's complement sum of this string.
/// </param>
/// <param name="homeNonceIndex">Will be echoed back by the mobile node to the correspondent node in a subsequent Binding Update.</param>
/// <param name="homeInitCookie">Contains the home init cookie.</param>
/// <param name="homeKeygenToken">Contains the 64-bit home keygen token used in the return routability procedure.</param>
/// <param name="options">Zero or more TLV-encoded mobility options.</param>
public IpV6ExtensionHeaderMobilityHomeTest(IpV4Protocol?nextHeader, ushort checksum, ushort homeNonceIndex, ulong homeInitCookie, ulong homeKeygenToken,
IpV6MobilityOptions options)
: base(nextHeader, checksum, options, MessageDataOffset.Options)
{
HomeNonceIndex = homeNonceIndex;
HomeInitCookie = homeInitCookie;
HomeKeygenToken = homeKeygenToken;
}
/// <summary>
/// Creates an instance from next header, checksum, status, sequence number, proxy binding, IPv4 home address binding only, global and options.
/// </summary>
/// <param name="nextHeader">
/// Identifies the type of header immediately following this extension header.
/// </param>
/// <param name="checksum">
/// Contains the checksum of the Mobility Header.
/// The checksum is calculated from the octet string consisting of a "pseudo-header"
/// followed by the entire Mobility Header starting with the Payload Proto field.
/// The checksum is the 16-bit one's complement of the one's complement sum of this string.
/// </param>
/// <param name="status">
/// Indicating the result of processing the Binding Revocation Indication message by the responder.
/// </param>
/// <param name="sequenceNumber">
/// Copied from the Sequence Number field in the Binding Revocation Indication.
/// It is used by the initiator, e.g., HA, LMA, MAG, in matching this Binding Revocation Acknowledgement
/// with the outstanding Binding Revocation Indication.
/// </param>
/// <param name="proxyBinding">
/// Set if set in the corresponding Binding Revocation Indication message.
/// </param>
/// <param name="ipV4HomeAddressBindingOnly">
/// Set if the it is set in the corresponding Binding Revocation Indication message.
/// </param>
/// <param name="global">
/// Set if it is set in the corresponding Binding Revocation Indication message.
/// </param>
/// <param name="options">
/// Zero or more TLV-encoded mobility options.
/// </param>
public IpV6ExtensionHeaderMobilityBindingRevocationAcknowledgementMessage(IpV4Protocol?nextHeader, ushort checksum,
Ipv6MobilityBindingRevocationStatus status, ushort sequenceNumber,
bool proxyBinding, bool ipV4HomeAddressBindingOnly, bool global,
IpV6MobilityOptions options)
: base(nextHeader, checksum, sequenceNumber, proxyBinding, ipV4HomeAddressBindingOnly, global, options)
{
Status = status;
}
/// <summary>
/// Creates an instance from next header, checksum, sequence number, unsolicited, status, lifetime and options.
/// </summary>
/// <param name="nextHeader">Identifies the type of header immediately following this extension header.</param>
/// <param name="checksum">
/// Contains the checksum of the Mobility Header.
/// The checksum is calculated from the octet string consisting of a "pseudo-header"
/// followed by the entire Mobility Header starting with the Payload Proto field.
/// The checksum is the 16-bit one's complement of the one's complement sum of this string.
/// </param>
/// <param name="sequenceNumber">Copied from the sequence number field of the LRI message being responded to.</param>
/// <param name="unsolicited">
/// When true, the LRA message is sent unsolicited.
/// The Lifetime field indicates a new requested value.
/// The MAG must wait for the regular LRI message to confirm that the request is acceptable to the LMA.
/// </param>
/// <param name="status">The acknowledgement status.</param>
/// <param name="lifetime">
/// The time in seconds for which the local forwarding is supported.
/// Typically copied from the corresponding field in the LRI message.
/// </param>
/// <param name="options">Zero or more TLV-encoded mobility options.</param>
public IpV6ExtensionHeaderMobilityLocalizedRoutingAcknowledgement(IpV4Protocol?nextHeader, ushort checksum, ushort sequenceNumber, bool unsolicited,
IpV6MobilityLocalizedRoutingAcknowledgementStatus status, ushort lifetime,
IpV6MobilityOptions options)
: base(nextHeader, checksum, sequenceNumber, lifetime, options)
{
Status = status;
Unsolicited = unsolicited;
}
/// <summary>
/// Creates an instance from next header, checksum, is unsolicited heartbeat response, is response, sequence number and options.
/// </summary>
/// <param name="nextHeader">Identifies the type of header immediately following this extension header.</param>
/// <param name="checksum">
/// Contains the checksum of the Mobility Header.
/// The checksum is calculated from the octet string consisting of a "pseudo-header"
/// followed by the entire Mobility Header starting with the Payload Proto field.
/// The checksum is the 16-bit one's complement of the one's complement sum of this string.
/// </param>
/// <param name="isUnsolicitedHeartbeatResponse">Set to true in Unsolicited Heartbeat Response.</param>
/// <param name="isResponse">
/// Indicates whether the message is a request or a response.
/// When it's set to false, it indicates that the Heartbeat message is a request.
/// When it's set to true, it indicates that the Heartbeat message is a response.
/// </param>
/// <param name="sequenceNumber">Sequence number used for matching the request to the reply.</param>
/// <param name="options">Zero or more TLV-encoded mobility options.</param>
public IpV6ExtensionHeaderMobilityHeartbeatMessage(IpV4Protocol?nextHeader, ushort checksum, bool isUnsolicitedHeartbeatResponse, bool isResponse,
uint sequenceNumber, IpV6MobilityOptions options)
: base(nextHeader, checksum, options, MessageDataOffset.MobilityOptions)
{
IsUnsolicitedHeartbeatResponse = isUnsolicitedHeartbeatResponse;
IsResponse = isResponse;
SequenceNumber = sequenceNumber;
}
internal IpV6ExtensionHeaderMobilityBindingAcknowledgementBase(IpV4Protocol?nextHeader, ushort checksum, IpV6BindingAcknowledgementStatus status,
bool keyManagementMobilityCapability, ushort sequenceNumber, ushort lifetime,
IpV6MobilityOptions options)
: base(nextHeader, checksum, options, MessageDataOffset.Options)
{
Status = status;
KeyManagementMobilityCapability = keyManagementMobilityCapability;
SequenceNumber = sequenceNumber;
Lifetime = lifetime;
}
internal static IpV6ExtensionHeaderMobilityBindingRefreshRequest ParseMessageData(IpV4Protocol nextHeader, ushort checksum, DataSegment messageData)
{
if (messageData.Length < MinimumMessageDataLength)
{
return(null);
}
IpV6MobilityOptions options = new IpV6MobilityOptions(messageData.Subsegment(MessageDataOffset.Options, messageData.Length - MessageDataOffset.Options));
return(new IpV6ExtensionHeaderMobilityBindingRefreshRequest(nextHeader, checksum, options));
}
/// <summary>
/// Creates an instance from next header, checksum, home agent addresses and options.
/// </summary>
/// <param name="nextHeader">Identifies the type of header immediately following this extension header.</param>
/// <param name="checksum">
/// Contains the checksum of the Mobility Header.
/// The checksum is calculated from the octet string consisting of a "pseudo-header"
/// followed by the entire Mobility Header starting with the Payload Proto field.
/// The checksum is the 16-bit one's complement of the one's complement sum of this string.
/// </param>
/// <param name="homeAgentAddresses">A list of alternate home agent addresses for the mobile node.</param>
/// <param name="options">Zero or more TLV-encoded mobility options.</param>
public IpV6ExtensionHeaderMobilityHomeAgentSwitchMessage(IpV4Protocol?nextHeader, ushort checksum, ReadOnlyCollection <IpV6Address> homeAgentAddresses,
IpV6MobilityOptions options)
: base(nextHeader, checksum, options,
MessageDataOffset.HomeAgentAddresses + (homeAgentAddresses == null ? 0 : homeAgentAddresses.Count) * IpV6Address.SizeOf)
{
if (homeAgentAddresses == null)
{
throw new ArgumentNullException("homeAgentAddresses");
}
HomeAgentAddresses = homeAgentAddresses;
}
internal static IpV6ExtensionHeaderMobilityCareOfTestInit ParseMessageData(IpV4Protocol nextHeader, ushort checksum, DataSegment messageData)
{
if (messageData.Length < MinimumMessageDataLength)
{
return(null);
}
ulong careOfInitCookie = messageData.ReadULong(MessageDataOffset.CareOfInitCookie, Endianity.Big);
IpV6MobilityOptions options = new IpV6MobilityOptions(messageData.Subsegment(MessageDataOffset.Options, messageData.Length - MessageDataOffset.Options));
return(new IpV6ExtensionHeaderMobilityCareOfTestInit(nextHeader, checksum, careOfInitCookie, options));
}
internal IpV6ExtensionHeaderMobilityBindingUpdateBase(IpV4Protocol?nextHeader, ushort checksum, ushort sequenceNumber, bool acknowledge,
bool homeRegistration, bool linkLocalAddressCompatibility, bool keyManagementMobilityCapability,
ushort lifetime, IpV6MobilityOptions options)
: base(nextHeader, checksum, options, MessageDataOffset.Options)
{
SequenceNumber = sequenceNumber;
Acknowledge = acknowledge;
HomeRegistration = homeRegistration;
LinkLocalAddressCompatibility = linkLocalAddressCompatibility;
KeyManagementMobilityCapability = keyManagementMobilityCapability;
Lifetime = lifetime;
}
internal static IpV6ExtensionHeaderMobilityHandoverAcknowledgeMessage ParseMessageData(IpV4Protocol nextHeader, ushort checksum, DataSegment messageData)
{
if (messageData.Length < MinimumMessageDataLength)
{
return(null);
}
ushort sequenceNumber = messageData.ReadUShort(MessageDataOffset.SequenceNumber, Endianity.Big);
IpV6MobilityHandoverAcknowledgeCode code = (IpV6MobilityHandoverAcknowledgeCode)messageData[MessageDataOffset.Code];
IpV6MobilityOptions options = new IpV6MobilityOptions(messageData.Subsegment(MessageDataOffset.Options, messageData.Length - MessageDataOffset.Options));
return(new IpV6ExtensionHeaderMobilityHandoverAcknowledgeMessage(nextHeader, checksum, sequenceNumber, code, options));
}
internal static IpV6ExtensionHeaderMobilityBindingError ParseMessageData(IpV4Protocol nextHeader, ushort checksum, DataSegment messageData)
{
if (messageData.Length < MinimumMessageDataLength)
{
return(null);
}
IpV6BindingErrorStatus status = (IpV6BindingErrorStatus)messageData[MessageDataOffset.Status];
IpV6Address homeAddress = messageData.ReadIpV6Address(MessageDataOffset.HomeAddress, Endianity.Big);
IpV6MobilityOptions options = new IpV6MobilityOptions(messageData.Subsegment(MessageDataOffset.Options, messageData.Length - MessageDataOffset.Options));
return(new IpV6ExtensionHeaderMobilityBindingError(nextHeader, checksum, status, homeAddress, options));
}
internal static IpV6ExtensionHeaderMobilityHeartbeatMessage ParseMessageData(IpV4Protocol nextHeader, ushort checksum, DataSegment messageData)
{
if (messageData.Length < MinimumMessageDataLength)
{
return(null);
}
bool isUnsolicitedHeartbeatResponse = messageData.ReadBool(MessageDataOffset.IsUnsolicitedHeartbeatResponse, MessageDataMask.IsUnsolicitedHeartbeatResponse);
bool isResponse = messageData.ReadBool(MessageDataOffset.IsResponse, MessageDataMask.IsResponse);
uint sequenceNumber = messageData.ReadUInt(MessageDataOffset.SequenceNumber, Endianity.Big);
IpV6MobilityOptions options = new IpV6MobilityOptions(messageData.Subsegment(MessageDataOffset.MobilityOptions, messageData.Length - MessageDataOffset.MobilityOptions));
return(new IpV6ExtensionHeaderMobilityHeartbeatMessage(nextHeader, checksum, isUnsolicitedHeartbeatResponse, isResponse, sequenceNumber, options));
}
internal static IpV6ExtensionHeaderMobilityHomeTest ParseMessageData(IpV4Protocol nextHeader, ushort checksum, DataSegment messageData)
{
if (messageData.Length < MinimumMessageDataLength)
{
return(null);
}
ushort homeNonceIndex = messageData.ReadUShort(MessageDataOffset.HomeNonceIndex, Endianity.Big);
ulong homeInitCookie = messageData.ReadULong(MessageDataOffset.HomeInitCookie, Endianity.Big);
ulong homeKeygenToken = messageData.ReadULong(MessageDataOffset.HomeKeygenToken, Endianity.Big);
IpV6MobilityOptions options = new IpV6MobilityOptions(messageData.Subsegment(MessageDataOffset.Options, messageData.Length - MessageDataOffset.Options));
return(new IpV6ExtensionHeaderMobilityHomeTest(nextHeader, checksum, homeNonceIndex, homeInitCookie, homeKeygenToken, options));
}
internal IpV6ExtensionHeaderMobility(IpV4Protocol?nextHeader, ushort checksum, IpV6MobilityOptions mobilityOptions, int?messageDataMobilityOptionsOffset)
: base(nextHeader)
{
if (messageDataMobilityOptionsOffset.HasValue)
{
int mobilityOptionsExtraBytes = (8 - (messageDataMobilityOptionsOffset.Value + 6) % 8) % 8;
if (mobilityOptions.BytesLength % 8 != mobilityOptionsExtraBytes)
{
mobilityOptions = mobilityOptions.Pad((8 + mobilityOptionsExtraBytes - (mobilityOptions.BytesLength % 8)) % 8);
}
}
Checksum = checksum;
MobilityOptions = mobilityOptions;
}
internal static bool ParseMessageDataToFields(DataSegment messageData, out ushort sequenceNumber, out ushort lifetime, out IpV6MobilityOptions options)
{
if (messageData.Length < MinimumMessageDataLength)
{
sequenceNumber = 0;
lifetime = 0;
options = null;
return(false);
}
sequenceNumber = messageData.ReadUShort(MessageDataOffset.SequenceNumber, Endianity.Big);
lifetime = messageData.ReadUShort(MessageDataOffset.Lifetime, Endianity.Big);
options = new IpV6MobilityOptions(messageData.Subsegment(MessageDataOffset.Options, messageData.Length - MessageDataOffset.Options));
return(true);
}
internal static IpV6ExtensionHeaderMobilityHandoverInitiateMessage ParseMessageData(IpV4Protocol nextHeader, ushort checksum, DataSegment messageData)
{
if (messageData.Length < MinimumMessageDataLength)
{
return(null);
}
ushort sequenceNumber = messageData.ReadUShort(MessageDataOffset.SequenceNumber, Endianity.Big);
bool assignedAddressConfiguration = messageData.ReadBool(MessageDataOffset.AssignedAddressConfiguration,
MessageDataMask.AssignedAddressConfiguration);
bool buffer = messageData.ReadBool(MessageDataOffset.Buffer, MessageDataMask.Buffer);
IpV6HandoverInitiateMessageCode code = (IpV6HandoverInitiateMessageCode)messageData[MessageDataOffset.Code];
IpV6MobilityOptions options = new IpV6MobilityOptions(messageData.Subsegment(MessageDataOffset.Options, messageData.Length - MessageDataOffset.Options));
return(new IpV6ExtensionHeaderMobilityHandoverInitiateMessage(nextHeader, checksum, sequenceNumber, assignedAddressConfiguration, buffer, code, options));
}
internal static bool ParseMessageDataFields(DataSegment messageData, out IpV6BindingAcknowledgementStatus status,
out bool keyManagementMobilityCapability, out ushort sequenceNumber, out ushort lifetime,
out IpV6MobilityOptions options)
{
if (messageData.Length < MinimumMessageDataLength)
{
status = IpV6BindingAcknowledgementStatus.BindingUpdateAccepted;
keyManagementMobilityCapability = false;
sequenceNumber = 0;
lifetime = 0;
options = null;
return(false);
}
status = (IpV6BindingAcknowledgementStatus)messageData[MessageDataOffset.Status];
keyManagementMobilityCapability = messageData.ReadBool(MessageDataOffset.KeyManagementMobilityCapability,
MessageDataMask.KeyManagementMobilityCapability);
sequenceNumber = messageData.ReadUShort(MessageDataOffset.SequenceNumber, Endianity.Big);
lifetime = messageData.ReadUShort(MessageDataOffset.Lifetime, Endianity.Big);
options = new IpV6MobilityOptions(messageData.Subsegment(MessageDataOffset.Options, messageData.Length - MessageDataOffset.Options));
return(true);
}
/// <summary>
/// Creates an instance from next header, checksum, sequence number, acknowledge, home registration, link local address compatibility,
/// key management mobiltiy capability, map registration, mobile router, proxy registration flag, forcing UDP encapsulation, TLV header format,
/// bulk binding update, lifetime and options.
/// </summary>
/// <param name="nextHeader">Identifies the type of header immediately following this extension header.</param>
/// <param name="checksum">
/// Contains the checksum of the Mobility Header.
/// The checksum is calculated from the octet string consisting of a "pseudo-header"
/// followed by the entire Mobility Header starting with the Payload Proto field.
/// The checksum is the 16-bit one's complement of the one's complement sum of this string.
/// </param>
/// <param name="sequenceNumber">
/// Used by the receiving node to sequence Binding Updates and by the sending node to match a returned Binding Acknowledgement with this Binding Update.
/// </param>
/// <param name="acknowledge">
/// Set by the sending mobile node to request a Binding Acknowledgement be returned upon receipt of the Binding Update.
/// For Fast Binding Update this must be set to one to request that PAR send a Fast Binding Acknowledgement message.
/// </param>
/// <param name="homeRegistration">
/// Set by the sending mobile node to request that the receiving node should act as this node's home agent.
/// The destination of the packet carrying this message must be that of a router sharing the same subnet prefix as the home address
/// of the mobile node in the binding.
/// For Fast Binding Update this must be set to one.
/// </param>
/// <param name="linkLocalAddressCompatibility">
/// Set when the home address reported by the mobile node has the same interface identifier as the mobile node's link-local address.
/// </param>
/// <param name="keyManagementMobilityCapability">
/// If this is cleared, the protocol used for establishing the IPsec security associations between the mobile node and the home agent
/// does not survive movements.
/// It may then have to be rerun. (Note that the IPsec security associations themselves are expected to survive movements.)
/// If manual IPsec configuration is used, the bit must be cleared.
/// </param>
/// <param name="mapRegistration">
/// Indicates MAP registration.
/// When a mobile node registers with the MAP, the MapRegistration and Acknowledge must be set to distinguish this registration
/// from a Binding Update being sent to the Home Agent or a correspondent node.
/// </param>
/// <param name="mobileRouter">
/// Indicates to the Home Agent that the Binding Update is from a Mobile Router.
/// If false, the Home Agent assumes that the Mobile Router is behaving as a Mobile Node,
/// and it must not forward packets destined for the Mobile Network to the Mobile Router.
/// </param>
/// <param name="proxyRegistration">
/// Indicates to the local mobility anchor that the Binding Update message is a proxy registration.
/// Must be true for proxy registrations and must be false direct registrations sent by a mobile node.
/// </param>
/// <param name="forcingUdpEncapsulation">
/// Indicates a request for forcing UDP encapsulation regardless of whether a NAT is present on the path between the mobile node and the home agent.
/// May be set by the mobile node if it is required to use UDP encapsulation regardless of the presence of a NAT.
/// </param>
/// <param name="typeLengthValueHeaderFormat">
/// Indicates that the mobile access gateway requests the use of the TLV header for encapsulating IPv6 or IPv4 packets in IPv4.
/// </param>
/// <param name="bulkBindingUpdate">
/// If true, it informs the local mobility anchor to enable bulk binding update support for the mobility session associated with this message.
/// If false, the local mobility anchor must exclude the mobility session associated with this message from any bulk-binding-related operations
/// and any binding update, or binding revocation operations with bulk-specific scope will not be relevant to that mobility session.
/// This flag is relevant only for Proxy Mobile IPv6 and therefore must be set to false when the ProxyRegistration is false.
/// </param>
/// <param name="lifetime">
/// The number of time units remaining before the binding must be considered expired.
/// A value of zero indicates that the Binding Cache entry for the mobile node must be deleted.
/// One time unit is 4 seconds for Binding Update and 1 second for Fast Binding Update.
/// </param>
/// <param name="options">Zero or more TLV-encoded mobility options.</param>
public IpV6ExtensionHeaderMobilityBindingUpdate(IpV4Protocol?nextHeader, ushort checksum, ushort sequenceNumber, bool acknowledge, bool homeRegistration,
bool linkLocalAddressCompatibility, bool keyManagementMobilityCapability, bool mapRegistration,
bool mobileRouter, bool proxyRegistration, bool forcingUdpEncapsulation, bool typeLengthValueHeaderFormat,
bool bulkBindingUpdate, ushort lifetime, IpV6MobilityOptions options)
: base(nextHeader, checksum, sequenceNumber, acknowledge, homeRegistration, linkLocalAddressCompatibility, keyManagementMobilityCapability,
lifetime, options)
{
MapRegistration = mapRegistration;
MobileRouter = mobileRouter;
ProxyRegistration = proxyRegistration;
ForcingUdpEncapsulation = forcingUdpEncapsulation;
TypeLengthValueHeaderFormat = typeLengthValueHeaderFormat;
BulkBindingUpdate = bulkBindingUpdate;
}
/// <summary>
/// Creates an instance from next header, checksum, status, key management mobility capability, mobile router, proxy registration, TLV header format,
/// sequence number, lifetime and options.
/// </summary>
/// <param name="nextHeader">Identifies the type of header immediately following this extension header.</param>
/// <param name="checksum">
/// Contains the checksum of the Mobility Header.
/// The checksum is calculated from the octet string consisting of a "pseudo-header"
/// followed by the entire Mobility Header starting with the Payload Proto field.
/// The checksum is the 16-bit one's complement of the one's complement sum of this string.
/// </param>
/// <param name="status">
/// Indicating the disposition of the Binding Update.
/// Values of the Status field less than 128 indicate that the Binding Update was accepted by the receiving node.
/// Values greater than or equal to 128 indicate that the Binding Update was rejected by the receiving node.
/// </param>
/// <param name="keyManagementMobilityCapability">
/// If this is cleared, the protocol used by the home agent for establishing the IPsec security associations between the mobile node and the home agent
/// does not survive movements.
/// It may then have to be rerun.
/// (Note that the IPsec security associations themselves are expected to survive movements.)
/// </param>
/// <param name="mobileRouter">
/// Indicates that the Home Agent that processed the Binding Update supports Mobile Routers.
/// True only if the corresponding Binding Update had the Mobile Router set to true.
/// </param>
/// <param name="proxyRegistration">
/// Indicates that the local mobility anchor that processed the corresponding Proxy Binding Update message supports proxy registrations.
/// True only if the corresponding Proxy Binding Update had the Proxy Registration set to true.
/// </param>
/// <param name="typeLengthValueHeaderFormat">
/// Indicates that the sender of the Proxy Binding Acknowledgement, the LMA, supports tunneling IPv6-or-IPv4 in IPv4 using TLV-header format.
/// </param>
/// <param name="sequenceNumber">
/// Copied from the Sequence Number field in the Binding Update.
/// It is used by the mobile node in matching this Binding Acknowledgement with an outstanding Binding Update.
/// </param>
/// <param name="lifetime">
/// The granted lifetime, in time units of 4 seconds for Binding Acknowledgement and 1 second for Fast Binding Acknowledgement,
/// for which this node should retain the entry for this mobile node in its Binding Cache.
/// </param>
/// <param name="options">Zero or more TLV-encoded mobility options.</param>
public IpV6ExtensionHeaderMobilityBindingAcknowledgement(IpV4Protocol?nextHeader, ushort checksum, IpV6BindingAcknowledgementStatus status,
bool keyManagementMobilityCapability, bool mobileRouter, bool proxyRegistration,
bool typeLengthValueHeaderFormat, ushort sequenceNumber, ushort lifetime, IpV6MobilityOptions options)
: base(nextHeader, checksum, status, keyManagementMobilityCapability, sequenceNumber, lifetime, options)
{
MobileRouter = mobileRouter;
ProxyRegistration = proxyRegistration;
TypeLengthValueHeaderFormat = typeLengthValueHeaderFormat;
}
/// <summary>
/// Creates an instance from next header, checksum and options.
/// </summary>
/// <param name="nextHeader">Identifies the type of header immediately following this extension header.</param>
/// <param name="checksum">
/// Contains the checksum of the Mobility Header.
/// The checksum is calculated from the octet string consisting of a "pseudo-header"
/// followed by the entire Mobility Header starting with the Payload Proto field.
/// The checksum is the 16-bit one's complement of the one's complement sum of this string.
/// </param>
/// <param name="options">Zero or more TLV-encoded mobility options.</param>
public IpV6ExtensionHeaderMobilityBindingRefreshRequest(IpV4Protocol?nextHeader, ushort checksum, IpV6MobilityOptions options)
: base(nextHeader, checksum, options, MessageDataOffset.Options)
{
}
/// <summary>
/// Creates an instance from next header, checksum, sequence number, lifetime and options.
/// </summary>
/// <param name="nextHeader">
/// Identifies the type of header immediately following this extension header.
/// </param>
/// <param name="checksum">
/// Contains the checksum of the Mobility Header.
/// The checksum is calculated from the octet string consisting of a "pseudo-header"
/// followed by the entire Mobility Header starting with the Payload Proto field.
/// The checksum is the 16-bit one's complement of the one's complement sum of this string.
/// </param>
/// <param name="sequenceNumber">
/// A monotonically increasing integer. Set by a sending node in a request message, and used to match a reply to the request.
/// </param>
/// <param name="lifetime">
/// The requested time in seconds for which the sender wishes to have local forwarding.
/// A value of 0xffff (all ones) indicates an infinite lifetime.
/// When set to 0, indicates a request to stop localized routing.
/// </param>
/// <param name="options">
/// Zero or more TLV-encoded mobility options.
/// </param>
public IpV6ExtensionHeaderMobilityLocalizedRoutingInitiation(IpV4Protocol?nextHeader, ushort checksum, ushort sequenceNumber,
ushort lifetime, IpV6MobilityOptions options)
: base(nextHeader, checksum, sequenceNumber, lifetime, options)
{
}
internal IpV6ExtensionHeaderMobilityBindingRevocationMessage(IpV4Protocol?nextHeader, ushort checksum, ushort sequenceNumber, bool proxyBinding,
bool ipV4HomeAddressBindingOnly, bool global, IpV6MobilityOptions options)
: base(nextHeader, checksum, options, MessageDataOffset.Options)
{
SequenceNumber = sequenceNumber;
ProxyBinding = proxyBinding;
IpV4HomeAddressBindingOnly = ipV4HomeAddressBindingOnly;
Global = global;
}
/// <summary>
/// Creates an instance from next header, checksum, care of init cookie and options.
/// </summary>
/// <param name="nextHeader">Identifies the type of header immediately following this extension header.</param>
/// <param name="checksum">
/// Contains the checksum of the Mobility Header.
/// The checksum is calculated from the octet string consisting of a "pseudo-header"
/// followed by the entire Mobility Header starting with the Payload Proto field.
/// The checksum is the 16-bit one's complement of the one's complement sum of this string.
/// </param>
/// <param name="careOfInitCookie">Contains a random value, the care-of init cookie.</param>
/// <param name="options">Zero or more TLV-encoded mobility options.</param>
public IpV6ExtensionHeaderMobilityCareOfTestInit(IpV4Protocol?nextHeader, ushort checksum, ulong careOfInitCookie, IpV6MobilityOptions options)
: base(nextHeader, checksum, options, MessageDataOffset.Options)
{
CareOfInitCookie = careOfInitCookie;
}