Unit IP
From Ultibo.org
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Description
Ultibo IP (Internet Protocol) unit
To be documented
Constants
IP specific constants
IP_TRANSPORT_NAME* IP_TRANSPORT_NAME = 'IP';
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IP constants
IP_*_SIZE MIN_IP_PACKET = 20;
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Not Counting Adapter Header |
MAX_IP_PACKET = 65536;
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Not Counting Adapter Header |
MAX_FRAG_LIFE = 32000;
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Only wait 32 seconds for the rest of the packet |
IP_HEADER_SIZE = 20;
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SizeOf(TIPHeader); (Does Not Allow for Options) |
IP_OPTIONS_SIZE = 40;
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Maximum Allowed Options |
IP_PSEUDO_SIZE = 12;
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SizeOf(TPseudoHeader); |
IP_PACKET_SIZE = 56;
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SizeOf(TIPPacket); (Previously 46) |
IP_FRAGMENT_SIZE = 12;
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SizeOf(TIPFragment); |
IP header flags / fragment offset constants
IP_* IP_CE = $8000;
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Congestion Experienced |
IP_DF = $4000;
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1 = Don't Fragment 0 = May Fragment |
IP_MF = $2000;
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1 = More Fragments 0 = Last Fragment |
IP_OFFMASK = $1FFF;
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Fragment Offset Mask |
IP header option constants
IPOPT_* IPOPT_EOL = 0;
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end-of-option list |
IPOPT_NOP = 1;
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no-operation |
IPOPT_RR = 7;
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record packet route |
IPOPT_TS = 68;
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timestamp |
IPOPT_SECURITY = 130;
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provide s,c,h,tcc |
IPOPT_LSRR = 131;
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loose source route |
IPOPT_SATID = 136;
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satnet id |
IPOPT_SSRR = 137;
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strict source route |
IPOPT_RA = 148;
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router alert |
IP offset option constants
IPOPT_OFFSET* | Offsets to fields in IP Options other than EOL and NOP | |
IPOPT_OPTVAL = 0;
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option ID |
IPOPT_OLEN = 1;
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option length |
IPOPT_OFFSET = 2;
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offset within option |
IPOPT_MINOFF = 4;
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min value of above |
IP TS flag option constants
IPOPT_TS_* | Flags for IPOPT_TS Flags | |
IPOPT_TS_TSONLY = 0;
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timestamps only |
IPOPT_TS_TSANDADDR = 1;
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timestamps and addresses |
IPOPT_TS_PRESPEC = 3;
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specified modules only |
IP security flag constants
IPOPT_SECUR_* | Flags for IPOPT_SECURITY Flags (Network Order) | |
IPOPT_SECUR_UNCLASS = $0000;
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IPOPT_SECUR_CONFID = $F135;
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IPOPT_SECUR_EFTO = $789A;
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IPOPT_SECUR_MMMM = $BC4D;
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IPOPT_SECUR_RESTR = $AF13;
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IPOPT_SECUR_SECRET = $D788;
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IPOPT_SECUR_TOPSECRET = $6BC5;
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IP type of service constants
IPTOS_* IPTOS_LOWDELAY = $10;
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IPTOS_THROUGHPUT = $08;
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IPTOS_RELIABILITY = $04;
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IPTOS_MINCOST = $02;
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Type definitions
To be documented
Public variables
None defined
Function declarations
Initialization functions
procedure IPInit;
Description: To be documented
| Note | None documented |
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IP functions
function CheckIP(ABuffer:Pointer):Boolean;
Description: Verify that the packet is a valid IP packet
| Buffer | Complete packet without Adapter header |
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function GetIPHeaderOffset(ABuffer:Pointer):Word;
Description: Return Start of the IP Header (Start of Packet)
| Buffer | Complete packet including Transport header |
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function GetIPHeaderLength(ABuffer:Pointer):Word;
Description: Return Size of IP Header (Including Options)
| Buffer | Complete packet including Transport header |
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function GetIPOptionsLength(ABuffer:Pointer):Word;
Description: Return Size of IP Options (Header - IP_HEADER_SIZE)
| Buffer | Complete packet including Transport header |
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function GetIPDataOffset(ABuffer:Pointer):Word;
Description: Return Start of IP Packet Data (Length of IP Header)
| Buffer | Complete packet including Transport header |
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function GetIPDataLength(ABuffer:Pointer):Word;
Description: Return Size of IP Packet Data (IP TotalLength - IP Header)
| Buffer | Complete packet including Transport header |
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function ChecksumIPRecv(ABuffer:Pointer; AOffset,ALength:Word):Word;
Description: Validate the IP Header and Options Checksum on Receive
| Buffer | Complete packet including Transport header |
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function ChecksumIPSend(AHeader,AOptions:Pointer; ALength:Word):Word;
Description: Checksum the IP Header and Options on Send
| Buffer | Complete packet including Transport header |
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