Unit Protocol
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Contents
[hide]Description
Ultibo Network Protocol interface unit
To be documented
Constants
[Expand]
Protocol specific constants
PROTOCOL_* PROTOCOL_THREAD_NAME = 'Network Protocol';
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Thread name for Network protocol threads |
PROTOCOL_THREAD_PRIORITY = THREAD_PRIORITY_HIGHER;
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Thread priority for Network protocol threads |
[Expand]
Protocol timer
SOCKET_TIMER_* SOCKET_TIMER_KEY_NONE = TIMER_KEY_NONE;
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SOCKET_TIMER_KEY_MAX = TIMER_KEY_MAX;
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SOCKET_TIMER_KEY_MIN = TIMER_KEY_MIN;
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[Expand]
ICMP header type
ICMP_* ICMP_ECHOREPLY = 0;
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echo reply |
ICMP_UNREACH = 3;
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dest unreachable |
ICMP_SOURCEQUENCH = 4;
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packet lost, slow down |
ICMP_REDIRECT = 5;
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shorter route |
ICMP_ECHO = 8;
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echo service |
ICMP_ROUTERADVERT = 9;
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router advertisement |
ICMP_ROUTERSOLICIT = 10;
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router solicitation |
ICMP_TIMXCEED = 11;
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time exceeded |
ICMP_PARAMPROB = 12;
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ip header bad |
ICMP_TSTAMP = 13;
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timestamp request |
ICMP_TSTAMPREPLY = 14;
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timestamp reply |
ICMP_IREQ = 15;
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information request |
ICMP_IREQREPLY = 16;
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information reply |
ICMP_MASKREQ = 17;
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address mask request |
ICMP_MASKREPLY = 18;
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address mask reply |
[Expand]
ICMP header code
ICMP_UNREACH_* ICMP_UNREACH_NET = 0;
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bad net |
ICMP_UNREACH_HOST = 1;
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bad host |
ICMP_UNREACH_PROTOCOL = 2;
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bad protocol |
ICMP_UNREACH_PORT = 3;
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bad port |
ICMP_UNREACH_NEEDFRAG = 4;
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IP_DF caused drop |
ICMP_UNREACH_SRCFAIL = 5;
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src route failed |
ICMP_UNREACH_NET_UNKNOWN = 6;
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unknown net |
ICMP_UNREACH_HOST_UNKNOWN = 7;
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unknown host |
ICMP_UNREACH_ISOLATED = 8;
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src host isolated |
ICMP_UNREACH_NET_PROHIB = 9;
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prohibited access |
ICMP_UNREACH_HOST_PROHIB = 10;
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ditto |
ICMP_UNREACH_TOSNET = 11;
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bad tos for net |
ICMP_UNREACH_TOSHOST = 12;
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bad tos for host |
ICMP_UNREACH_FILTER_PROHIB = 13;
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admin prohib |
ICMP_UNREACH_HOST_PRECEDENCE = 14;
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host prec vio. |
ICMP_UNREACH_PRECEDENCE_CUTOFF = 15;
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prec cutoff |
ICMP_REDIRECT_NET = 0;
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for network |
ICMP_REDIRECT_HOST = 1;
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for host |
ICMP_REDIRECT_TOSNET = 2;
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for tos and net |
ICMP_REDIRECT_TOSHOST = 3;
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for tos and host |
ICMP_TIMXCEED_INTRANS = 0;
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ttl=0 in transit |
ICMP_TIMXCEED_REASS = 1;
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ttl=0 in reassembly |
ICMP_PARAMPROB_OPTABSENT = 1;
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req. opt. absent |
[Expand]
IGMP header type
IGMP_* IGMP_VERSION = 2;
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IGMP_QUERY = $0011;
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IGMP_REPORTV1 = $0012;
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IGMP_REPORTV2 = $0016;
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IGMP_LEAVE = $0017;
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Type definitions
Protocol statistics
[Expand]
PProtocolStatistics = ^TProtocolStatistics;
TProtocolStatistics = record
PacketsIn:Int64;
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PacketsOut:Int64;
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BytesIn:Int64;
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BytesOut:Int64;
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ErrorsIn:Int64;
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ErrorsOut:Int64;
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PacketsLost:Int64;
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Socket timer item
[Expand]
PSocketTimerItem = ^TSocketTimerItem;
TSocketTimerItem = record
Key:Integer;
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Ordering key for timer list |
Socket:TObject;
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The socket referenced by this timer list item |
Prev:PSocketTimerItem;
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Previous item in timer list |
Next:PSocketTimerItem;
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Next item in timer list |
Protocol callback
TProtocolCallback = function(AProtocol:TNetworkProtocol):Boolean of object;
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Filter callback
TFilterCallback = function(AFilter:TNetworkFilter):Boolean of object;
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Configuration callback
TConfigCallback = function(AConfig:TNetworkConfig):Boolean of object;
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Class definitions
Protocol manager
[Expand]
TProtocolManager = class(TObject)
constructor Create(ASettings:TNetworkSettings; ATransports:TTransportManager);
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destructor Destroy; override;
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private
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FLock:TSynchronizerHandle;
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FSettings:TNetworkSettings;
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FTransports:TTransportManager;
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FProtocols:TNetworkList;
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List of TNetworkProtocol objects |
FFilters:TNetworkList;
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List of TNetworkFilter objects |
FConfigs:TNetworkList;
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List of TNetworkConfig objects |
function ReaderLock:Boolean;
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function ReaderUnlock:Boolean;
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function WriterLock:Boolean;
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function WriterUnlock:Boolean;
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public
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property Settings:TNetworkSettings read FSettings;
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property Transports:TTransportManager read FTransports;
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function AddProtocol(AProtocol:TNetworkProtocol):Boolean;
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function RemoveProtocol(AProtocol:TNetworkProtocol):Boolean;
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function GetProtocolByType(AProtocol,ASocketType:Word; ALock:Boolean; AState:LongWord):TNetworkProtocol;
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function GetProtocolByProtocol(AProtocol:TNetworkProtocol; ALock:Boolean; AState:LongWord):TNetworkProtocol;
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function GetProtocolByNext(APrevious:TNetworkProtocol; ALock,AUnlock:Boolean; AState:LongWord):TNetworkProtocol;
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function AddFilter(AFilter:TNetworkFilter):Boolean;
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function RemoveFilter(AFilter:TNetworkFilter):Boolean;
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function GetFilterByProtocol(AProtocol:Word; ALock:Boolean; AState:LongWord):TNetworkFilter;
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function GetFilterByFilter(AFilter:TNetworkFilter; ALock:Boolean; AState:LongWord):TNetworkFilter;
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function GetFilterByNext(APrevious:TNetworkFilter; ALock,AUnlock:Boolean; AState:LongWord):TNetworkFilter;
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function AddConfig(AConfig:TNetworkConfig):Boolean;
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function RemoveConfig(AConfig:TNetworkConfig):Boolean;
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function GetConfigByType(AConfigType:Word; ALock:Boolean; AState:LongWord):TNetworkConfig;
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function GetConfigByConfig(AConfig:TNetworkConfig; ALock:Boolean; AState:LongWord):TNetworkConfig;
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function GetConfigByNext(APrevious:TNetworkConfig; ALock,AUnlock:Boolean; AState:LongWord):TNetworkConfig;
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function SetConfigByType(AConfigType:Word; AInitDelay,ARetryCount,ARetryTimeout:LongWord):Boolean;
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function StartProtocols:Boolean;
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function StopProtocols:Boolean;
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function ProcessProtocols:Boolean;
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function ProcessSockets:Boolean;
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function EnumerateProtocols(ACallback:TProtocolCallback):Boolean;
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function BindProtocols(ATransport:TNetworkTransport):Boolean;
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function UnbindProtocols(ATransport:TNetworkTransport):Boolean;
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function StartFilters:Boolean;
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function StopFilters:Boolean;
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function ProcessFilters:Boolean;
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function EnumerateFilters(ACallback:TFilterCallback):Boolean;
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function BindFilters(ATransport:TNetworkTransport):Boolean;
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function UnbindFilters(ATransport:TNetworkTransport):Boolean;
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function StartConfigs:Boolean;
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function StopConfigs:Boolean;
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function ProcessConfigs:Boolean;
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function EnumerateConfigs(ACallback:TConfigCallback):Boolean;
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function BindConfigs(ATransport:TNetworkTransport):Boolean;
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function UnbindConfigs(ATransport:TNetworkTransport):Boolean;
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function CheckSocket(ASocket:TSocket; ALock:Boolean; AState:LongWord):Boolean;
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function Select(ANfds:Integer; AReadfds,AWritefds,AExceptfds:PFDSet; ATimeout:PTimeVal):LongInt;
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function Socket(AFamily,AStruct,AProtocol:Integer):TSocket;
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Protocol transport
[Expand]
TProtocolTransport = class(TListObject)
| Note: Downstream | |
constructor Create;
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destructor Destroy; override;
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private
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FLock:TSynchronizerHandle;
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public
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Handle:THandle;
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Protocol:Word;
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Transport:TNetworkTransport;
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function ReaderLock:Boolean;
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function ReaderUnlock:Boolean;
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function WriterLock:Boolean;
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function WriterUnlock:Boolean;
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Network protocol
[Expand]
TNetworkProtocol = class(TListObject)
constructor Create(AManager:TProtocolManager; const AName:String);
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destructor Destroy; override;
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private
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FLock:TSynchronizerHandle;
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protected
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FManager:TProtocolManager;
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FName:String;
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FProtocol:Word;
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FSocketType:Word;
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FTransports:TNetworkList;
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List of TProtocolTransport objects |
FTimer:TSocketTimer;
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Timer for socket processing |
FThread:TSocketThread;
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Thread for socket processing |
FPorts:TNetworkList;
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List of TProtocolPort objects |
FSockets:TNetworkList;
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List of TProtocolSocket objects |
FStatistics:TProtocolStatistics;
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function GetTransportByHandle(AHandle:THandle; ALock:Boolean; AState:LongWord):TProtocolTransport;
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function GetTransportByFamily(AFamily:Word; ALock:Boolean; AState:LongWord):TProtocolTransport;
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function GetTransportByTransport(ATransport:TNetworkTransport; ALock:Boolean; AState:LongWord):TProtocolTransport;
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function GetTransportByNext(APrevious:TProtocolTransport; ALock,AUnlock:Boolean; AState:LongWord):TProtocolTransport;
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function AddTransport(ATransport:TNetworkTransport):Boolean; virtual;
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function RemoveTransport(ATransport:TNetworkTransport):Boolean; virtual;
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function OpenPort(ASocket:TProtocolSocket; APort:Word):Boolean; virtual;
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function ClosePort(ASocket:TProtocolSocket):Boolean; virtual;
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function FindPort(APort:Word; AWrite,ALock:Boolean):TProtocolPort; virtual;
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function GetSocketByNext(APrevious:TProtocolSocket; ALock,AUnlock:Boolean; AState:LongWord):TProtocolSocket;
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function CheckSocket(ASocket:TProtocolSocket; ALock:Boolean; AState:LongWord):Boolean; virtual;
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function FindSocket(AFamily,AStruct,AProtocol:Word; ALocalAddress,ARemoteAddress:Pointer; ALocalPort,ARemotePort:Word; ABroadcast,AListen,ALock:Boolean; AState:LongWord):TProtocolSocket; virtual;
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procedure FlushSockets(All:Boolean); virtual;
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function SelectStart(ASource,ADest:PFDSet):Boolean; virtual;
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function SelectCheck(ASource,ADest:PFDSet;ACode:Integer):Integer; virtual;
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function SendPacket(ASocket:TProtocolSocket; ASource,ADest:Pointer; ASourcePort,ADestPort:Word; APacket:PPacketFragment; ASize,AFlags:Integer):Integer; virtual;
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public
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property Manager:TProtocolManager read FManager;
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property Name:String read FName;
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property Protocol:Word read FProtocol;
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property SocketType:Word read FSocketType;
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function Accept(ASocket:TProtocolSocket; ASockAddr:PSockAddr; AAddrLength:PInteger):TProtocolSocket; virtual;
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function Bind(ASocket:TProtocolSocket; var ASockAddr:TSockAddr; AAddrLength:Integer):Integer; virtual;
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function CloseSocket(ASocket:TProtocolSocket):Integer; virtual;
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function Connect(ASocket:TProtocolSocket; var ASockAddr:TSockAddr; AAddrLength:Integer):Integer; virtual;
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function IoctlSocket(ASocket:TProtocolSocket; ACmd:DWORD; var AArg:u_long):Integer; virtual;
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function GetPeerName(ASocket:TProtocolSocket; var ASockAddr:TSockAddr; var AAddrLength:Integer):Integer; virtual;
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function GetSockName(ASocket:TProtocolSocket; var ASockAddr:TSockAddr; var AAddrLength:Integer):Integer; virtual;
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function GetSockOpt(ASocket:TProtocolSocket; ALevel,AOptName:Integer; AOptValue:PChar; var AOptLength:Integer):Integer; virtual;
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function Listen(ASocket:TProtocolSocket; ABacklog:Integer):Integer; virtual;
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function Recv(ASocket:TProtocolSocket; var ABuffer; ALength,AFlags:Integer):Integer; virtual;
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function RecvFrom(ASocket:TProtocolSocket; var ABuffer; ALength,AFlags:Integer; var AFromAddr:TSockAddr; var AFromLength:Integer):Integer; virtual;
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function Select(ANfds:Integer; AReadfds,AWritefds,AExceptfds:PFDSet; ATimeout:PTimeVal):LongInt; virtual;
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function Send(ASocket:TProtocolSocket; var ABuffer; ALength,AFlags:Integer):Integer; virtual;
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function SendTo(ASocket:TProtocolSocket; var ABuffer; ALength,AFlags:Integer; var AToAddr:TSockAddr; AToLength:Integer):Integer; virtual;
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function SetSockOpt(ASocket:TProtocolSocket; ALevel,AOptName:Integer; AOptValue:PChar; AOptLength:Integer):Integer; virtual;
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function Shutdown(ASocket:TProtocolSocket; AHow:Integer):Integer; virtual;
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function Socket(AFamily,AStruct,AProtocol:Integer):TProtocolSocket; virtual;
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function ReaderLock:Boolean;
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function ReaderUnlock:Boolean;
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function WriterLock:Boolean;
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function WriterUnlock:Boolean;
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function GetStatistics:TProtocolStatistics; virtual;
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function StartProtocol:Boolean; virtual;
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function StopProtocol:Boolean; virtual;
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function ProcessProtocol:Boolean; virtual;
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function ProcessSockets:Boolean; virtual;
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function ProcessSocket(ASocket:TProtocolSocket):Boolean; virtual;
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function BindProtocol(ATransport:TNetworkTransport):Boolean; virtual;
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function UnbindProtocol(ATransport:TNetworkTransport):Boolean; virtual;
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function CheckTimer:Boolean; virtual;
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function ProcessTimer:Boolean; virtual;
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function SendSocket(ASocket:TProtocolSocket):Boolean; virtual;
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function ScheduleSocket(ASocket:TProtocolSocket; ATimeout:LongWord):Boolean; virtual;
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function UnscheduleSocket(ASocket:TProtocolSocket):Boolean; virtual;
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function ScheduleSocketItem(ASocket:TProtocolSocket; AItem:PSocketTimerItem; ATimeout:LongWord):Boolean; virtual;
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function UnscheduleSocketItem(ASocket:TProtocolSocket; AItem:PSocketTimerItem):Boolean; virtual;
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Socket timer
[Expand]
TSocketTimer = class(TObject)
constructor Create(AProtocol:TNetworkProtocol);
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destructor Destroy; override;
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protected
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FProtocol:TNetworkProtocol;
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FLock:TMutexHandle;
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FInterval:LongWord;
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FCheckTimer:TTimerHandle;
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FProcessSemaphore:TSemaphoreHandle;
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FCount:LongWord;
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FMaxCount:LongWord;
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FFirst:PSocketTimerItem;
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FLast:PSocketTimerItem;
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function AcquireLock:Boolean;
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function ReleaseLock:Boolean;
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function Dequeue(AMax:Integer):TProtocolSocket;
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function FirstKey:Integer;
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function InsertKey(ASocket:TProtocolSocket; AItem:PSocketTimerItem; AKey:Integer):Boolean;
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function DeleteKey(ASocket:TProtocolSocket; AItem:PSocketTimerItem):Boolean;
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function DecrementKey:Integer;
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public
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property Count:LongWord read FCount;
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property MaxCount:LongWord read FMaxCount;
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function StartTimer(AInterval:LongWord):Boolean; virtual;
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function StopTimer:Boolean; virtual;
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function CheckTimer:Boolean; virtual;
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function ProcessTimer:Boolean; virtual;
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function ScheduleSocket(ASocket:TProtocolSocket; ATimeout:LongWord):Boolean; virtual;
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function UnscheduleSocket(ASocket:TProtocolSocket):Boolean; virtual;
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function ScheduleSocketItem(ASocket:TProtocolSocket; AItem:PSocketTimerItem; ATimeout:LongWord):Boolean; virtual;
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function UnscheduleSocketItem(ASocket:TProtocolSocket; AItem:PSocketTimerItem):Boolean; virtual;
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Socket thread
[Expand]
TSocketThread = class(TThread)
constructor Create(AProtocol:TNetworkProtocol);
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destructor Destroy; override;
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protected
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FProtocol:TNetworkProtocol;
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procedure Execute; override;
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public
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function SendSocket(ASocket:TProtocolSocket):Boolean;
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Protocol port
[Expand]
TProtocolPort = class(TListObject)
constructor Create;
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destructor Destroy; override;
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private
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FLock:TMutexHandle;
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public
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Port:Word;
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Sockets:TList;
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function AcquireLock:Boolean;
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function ReleaseLock:Boolean;
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Protocol socket
[Expand]
TProtocolSocket = class(TTransportSocket)
constructor Create(AProtocol:TNetworkProtocol; ATransport:TNetworkTransport);
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destructor Destroy; override;
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private
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FSocketChange:TEventHandle;
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protected
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FProtocol:TNetworkProtocol;
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FProtocolState:TProtocolState;
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FProtocolOptions:TProtocolOptions;
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function CheckSocket(ASocket:TProtocolSocket; ALock:Boolean; AState:LongWord):Boolean;
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public
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property ProtocolState:TProtocolState read FProtocolState;
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property ProtocolOptions:TProtocolOptions read FProtocolOptions;
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property Protocol:TNetworkProtocol read FProtocol;
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function WaitChange:Boolean;
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function WaitChangeEx(ATimeout:LongWord):Boolean;
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function SignalChange:Boolean;
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function SendSocket:Boolean;
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function ScheduleSocket(ATimeout:LongWord):Boolean;
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function UnscheduleSocket:Boolean;
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Protocol state
[Expand]
TProtocolState = class(TObject)
constructor Create;
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destructor Destroy; override;
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private
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FLock:TCriticalSectionHandle;
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protected
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FLocalPort:Word;
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FRemotePort:Word;
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function AcquireLock:Boolean;
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function ReleaseLock:Boolean;
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procedure SetLocalPort(ALocalPort:Word);
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procedure SetRemotePort(ARemotePort:Word);
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public
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property LocalPort:Word read FLocalPort write SetLocalPort;
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property RemotePort:Word read FRemotePort write SetRemotePort;
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Protocol options
[Expand]
TProtocolOptions = class(TObject)
| Note: For Get/Set Options at the Protocol Level (eg IPPROTO_TCP, IPPROTO_UDP) | |
constructor Create;
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destructor Destroy; override;
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private
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FLock:TCriticalSectionHandle;
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protected
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function AcquireLock:Boolean;
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function ReleaseLock:Boolean;
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Filter transport
[Expand]
TFilterTransport = class(TListObject)
| Note: Downstream | |
constructor Create;
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destructor Destroy; override;
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private
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FLock:TSynchronizerHandle;
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public
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Handle:THandle;
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Protocol:Word;
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Transport:TNetworkTransport;
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function ReaderLock:Boolean;
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function ReaderUnlock:Boolean;
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function WriterLock:Boolean;
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function WriterUnlock:Boolean;
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Network filter
[Expand]
TNetworkFilter = class(TListObject)
| Note: eg IP Filter | |
constructor Create(AManager:TProtocolManager);
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destructor Destroy; override;
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private
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FLock:TSynchronizerHandle;
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protected
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FManager:TProtocolManager;
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FProtocol:Word;
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FTransports:TNetworkList;
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List of TFilterTransport objects |
function GetTransportByHandle(AHandle:THandle; ALock:Boolean; AState:LongWord):TFilterTransport;
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function GetTransportByFamily(AFamily:Word; ALock:Boolean; AState:LongWord):TFilterTransport;
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function GetTransportByTransport(ATransport:TNetworkTransport; ALock:Boolean; AState:LongWord):TFilterTransport;
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function GetTransportByNext(APrevious:TFilterTransport; ALock,AUnlock:Boolean; AState:LongWord):TFilterTransport;
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function AddTransport(ATransport:TNetworkTransport):Boolean; virtual;
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function RemoveTransport(ATransport:TNetworkTransport):Boolean; virtual;
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public
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property Manager:TProtocolManager read FManager;
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property Protocol:Word read FProtocol;
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function ReaderLock:Boolean;
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function ReaderUnlock:Boolean;
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function WriterLock:Boolean;
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function WriterUnlock:Boolean;
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function StartFilter:Boolean; virtual;
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function StopFilter:Boolean; virtual;
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function ProcessFilter:Boolean; virtual;
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function BindFilter(ATransport:TNetworkTransport):Boolean; virtual;
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function UnbindFilter(ATransport:TNetworkTransport):Boolean; virtual;
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Configuration transport
[Expand]
TConfigTransport = class(TListObject)
| Note: Downstream | |
constructor Create;
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destructor Destroy; override;
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private
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FLock:TSynchronizerHandle;
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public
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Handle:THandle;
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ConfigType:Word;
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Transport:TNetworkTransport;
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function ReaderLock:Boolean;
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function ReaderUnlock:Boolean;
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function WriterLock:Boolean;
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function WriterUnlock:Boolean;
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Network configuration
[Expand]
TNetworkConfig = class(TListObject)
| Note: eg DHCP/BOOTP/RARP/STATIC/PSEUDO | |
constructor Create(AManager:TProtocolManager);
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destructor Destroy; override;
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private
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FLock:TSynchronizerHandle;
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protected
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FManager:TProtocolManager;
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FConfigType:Word;
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FInitDelay:LongWord;
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FRetryCount:LongWord;
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FRetryTimeout:LongWord;
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FTransports:TNetworkList;
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List of TConfigTransport objects |
function GetTransportByHandle(AHandle:THandle; ALock:Boolean; AState:LongWord):TConfigTransport;
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function GetTransportByFamily(AFamily:Word; ALock:Boolean; AState:LongWord):TConfigTransport;
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function GetTransportByTransport(ATransport:TNetworkTransport; ALock:Boolean; AState:LongWord):TConfigTransport;
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function GetTransportByNext(APrevious:TConfigTransport; ALock,AUnlock:Boolean; AState:LongWord):TConfigTransport;
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function AddTransport(ATransport:TNetworkTransport):Boolean; virtual;
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function RemoveTransport(ATransport:TNetworkTransport):Boolean; virtual;
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public
| |
property Manager:TProtocolManager read FManager;
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property ConfigType:Word read FConfigType;
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property InitDelay:LongWord read FInitDelay;
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property RetryCount:LongWord read FRetryCount;
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property RetryTimeout:LongWord read FRetryTimeout;
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function ReaderLock:Boolean;
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function ReaderUnlock:Boolean;
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function WriterLock:Boolean;
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function WriterUnlock:Boolean;
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function StartConfig:Boolean; virtual;
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function StopConfig:Boolean; virtual;
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function ProcessConfig:Boolean; virtual;
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function BindConfig(ATransport:TNetworkTransport):Boolean; virtual;
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function UnbindConfig(ATransport:TNetworkTransport):Boolean; virtual;
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function SetConfig(AInitDelay,ARetryCount,ARetryTimeout:LongWord):Boolean; virtual;
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Network client
[Expand]
TNetworkClient = class(TListObject)
| Note: eg DNS/WINS | |
constructor Create(AProtocol:TNetworkProtocol);
|
|
destructor Destroy; override;
|
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private
| |
FLock:TSynchronizerHandle;
|
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protected
| |
FProtocol:TNetworkProtocol;
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public
| |
property Protocol:TNetworkProtocol read FProtocol;
|
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function ReaderLock:Boolean;
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function ReaderUnlock:Boolean;
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function WriterLock:Boolean;
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function WriterUnlock:Boolean;
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function StartClient:Boolean; virtual;
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function StopClient:Boolean; virtual;
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Public variables
None defined
Function declarations
Initialization functions
Protocol helper functions
[Expand]
procedure ProtocolCheckTimer(Data:Pointer);
Description: To be documented
| Note | None documented |
|---|
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