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{
$Project$
$Workfile$
$Revision$
$DateUTC$
$Id$
This file is part of the Indy (Internet Direct) project, and is offered
under the dual-licensing agreement described on the Indy website.
(http://www.indyproject.org/)
Copyright:
(c) 1993-2005, Chad Z. Hower and the Indy Pit Crew. All rights reserved.
}
{
$Log$
}
{
Rev 1.8 10/26/2004 8:12:30 PM JPMugaas
Now uses TIdStrings and TIdStringList for portability.
Rev 1.7 12/06/2004 15:16:44 CCostelloe
Restructured to remove inconsistencies with derived classes
Rev 1.6 07/06/2004 21:30:48 CCostelloe
Kylix 3 changes
Rev 1.5 5/15/2004 3:32:30 AM DSiders
Corrected case in name of TIdIPAddressRec.
Rev 1.4 4/18/04 10:29:24 PM RLebeau
Added TIdInt64Parts structure
Rev 1.3 2004.04.18 4:41:40 PM czhower
RaiseSocketError
Rev 1.2 2004.03.07 11:45:24 AM czhower
Flushbuffer fix + other minor ones found
Rev 1.1 3/6/2004 5:16:24 PM JPMugaas
Bug 67 fixes. Do not write to const values.
Rev 1.0 2004.02.03 3:14:44 PM czhower
Move and updates
Rev 1.22 2/1/2004 3:28:26 AM JPMugaas
Changed WSGetLocalAddress to GetLocalAddress and moved into IdStack since
that will work the same in the DotNET as elsewhere. This is required to
reenable IPWatch.
Rev 1.21 1/31/2004 1:13:00 PM JPMugaas
Minor stack changes required as DotNET does support getting all IP addresses
just like the other stacks.
Rev 1.20 12/4/2003 3:14:56 PM BGooijen
Added HostByAddress
Rev 1.19 12/31/2003 9:52:00 PM BGooijen
Added IPv6 support
Rev 1.18 10/26/2003 5:04:24 PM BGooijen
UDP Server and Client
Rev 1.17 10/26/2003 09:10:24 AM JPMugaas
Calls necessary for IPMulticasting.
Rev 1.16 10/22/2003 04:41:04 PM JPMugaas
Should compile with some restored functionality. Still not finished.
Rev 1.15 10/21/2003 06:24:24 AM JPMugaas
BSD Stack now have a global variable for refercing by platform specific
things. Removed corresponding var from Windows stack.
Rev 1.14 10/19/2003 5:21:28 PM BGooijen
SetSocketOption
Rev 1.13 2003.10.11 5:51:08 PM czhower
-VCL fixes for servers
-Chain suport for servers (Super core)
-Scheduler upgrades
-Full yarn support
Rev 1.12 10/5/2003 9:55:28 PM BGooijen
TIdTCPServer works on D7 and DotNet now
Rev 1.11 04/10/2003 22:32:02 HHariri
moving of WSNXXX method to IdStack and renaming of the DotNet ones
Rev 1.10 10/2/2003 7:36:28 PM BGooijen
.net
Rev 1.9 2003.10.02 10:16:30 AM czhower
.Net
Rev 1.8 2003.10.01 9:11:22 PM czhower
.Net
Rev 1.7 2003.10.01 5:05:16 PM czhower
.Net
Rev 1.6 2003.10.01 2:30:42 PM czhower
.Net
Rev 1.3 10/1/2003 12:14:16 AM BGooijen
DotNet: removing CheckForSocketError
Rev 1.2 2003.10.01 1:12:38 AM czhower
.Net
Rev 1.1 2003.09.30 1:25:02 PM czhower
Added .inc file.
Rev 1.0 2003.09.30 1:24:20 PM czhower
Initial Checkin
Rev 1.10 2003.09.30 10:36:02 AM czhower
Moved stack creation to IdStack
Added DotNet stack.
Rev 1.9 9/8/2003 02:13:14 PM JPMugaas
SupportsIP6 function added for determining if IPv6 is installed on a system.
Rev 1.8 2003.07.17 4:57:04 PM czhower
Added new exception type so it can be added to debugger list of ignored
exceptions.
Rev 1.7 2003.07.14 11:46:46 PM czhower
IOCP now passes all bubbles.
Rev 1.6 2003.07.14 1:57:24 PM czhower
-First set of IOCP fixes.
-Fixed a threadsafe problem with the stack class.
Rev 1.5 7/1/2003 05:20:38 PM JPMugaas
Minor optimizations. Illiminated some unnecessary string operations.
Rev 1.4 7/1/2003 03:39:54 PM JPMugaas
Started numeric IP function API calls for more efficiency.
Rev 1.3 7/1/2003 12:46:08 AM JPMugaas
Preliminary stack functions taking an IP address numerical structure instead
of a string.
Rev 1.2 5/10/2003 4:02:22 PM BGooijen
Rev 1.1 2003.05.09 10:59:26 PM czhower
Rev 1.0 11/13/2002 08:59:02 AM JPMugaas
}
unit IdStackBSDBase;
interface
{$I IdCompilerDefines.inc}
{$IFDEF DOTNET}
Improper compile.
This unit must NOT be linked into DotNet applications.
{$ENDIF}
uses
Classes,
IdException, IdStack, IdStackConsts, IdGlobal;
type
// RLebeau - for use with the HostToNetwork() and NetworkToHost()
// methods under Windows and Linux since the Socket API doesn't
// have native conversion functions for int64 values...
TIdInt64Parts = packed record
case Integer of
0: (
{$IFDEF ENDIAN_BIG}
HighPart: UInt32;
LowPart: UInt32);
{$ELSE}
LowPart: UInt32;
HighPart: UInt32);
{$ENDIF}
1: (
QuadPart: Int64);
end;
TIdUInt64Parts = packed record
case Integer of
0: (
{$IFDEF ENDIAN_BIG}
HighPart: UInt32;
LowPart: UInt32);
{$ELSE}
LowPart: UInt32;
HighPart: UInt32);
{$ENDIF}
1: (
QuadPart: UInt64);
end;
TIdIPv6AddressRec = packed array[0..7] of UInt16;
TIdIPAddressRec = packed record
IPVer: TIdIPVersion;
case Integer of
0: (IPv4, Junk1, Junk2, Junk3: UInt32);
2: (IPv6 : TIdIPv6AddressRec);
end;
//procedure EmptyIPRec(var VIP : TIdIPAddress);
TIdSunB = packed record
s_b1, s_b2, s_b3, s_b4: UInt8;
end;
TIdSunW = packed record
s_w1, s_w2: UInt16;
end;
PIdIn4Addr = ^TIdIn4Addr;
TIdIn4Addr = packed record
case integer of
0: (S_un_b: TIdSunB);
1: (S_un_w: TIdSunW);
2: (S_addr: UInt32);
end;
PIdIn6Addr = ^TIdIn6Addr;
TIdIn6Addr = packed record
case Integer of
0: (s6_addr: packed array [0..16-1] of UInt8);
1: (s6_addr16: packed array [0..8-1] of UInt16);
end;
(*$HPPEMIT '#ifdef s6_addr'*)
(*$HPPEMIT ' #undef s6_addr'*)
(*$HPPEMIT '#endif'*)
(*$HPPEMIT '#ifdef s6_addr16'*)
(*$HPPEMIT ' #undef s6_addr16'*)
(*$HPPEMIT '#endif'*)
PIdInAddr = ^TIdInAddr;
TIdInAddr = {$IFDEF IPv6} TIdIn6Addr; {$ELSE} TIdIn4Addr; {$ENDIF}
//Do not change these structures or insist on objects
//because these are parameters to IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP
TIdIPMreq = packed record
IMRMultiAddr : TIdIn4Addr; // IP multicast address of group */
IMRInterface : TIdIn4Addr; // local IP address of interface */
end;
TIdIPv6Mreq = packed record
ipv6mr_multiaddr : TIdIn6Addr; //IPv6 multicast addr
ipv6mr_interface : UInt32; //interface index
end;
TIdStackBSDBase = class(TIdStack)
protected
function WSCloseSocket(ASocket: TIdStackSocketHandle): Integer; virtual; abstract;
function WSRecv(ASocket: TIdStackSocketHandle; var ABuffer;
const ABufferLength, AFlags: Integer): Integer; virtual; abstract;
function WSSend(ASocket: TIdStackSocketHandle; const ABuffer;
const ABufferLength, AFlags: Integer): Integer; virtual; abstract;
function WSShutdown(ASocket: TIdStackSocketHandle; AHow: Integer): Integer;
virtual; abstract;
{$IFNDEF VCL_XE3_OR_ABOVE}
procedure WSGetSocketOption(ASocket: TIdStackSocketHandle; ALevel: TIdSocketOptionLevel;
AOptName: TIdSocketOption; var AOptVal; var AOptLen: Integer); virtual; abstract;
procedure WSSetSocketOption(ASocket: TIdStackSocketHandle; ALevel: TIdSocketOptionLevel;
AOptName: TIdSocketOption; const AOptVal; const AOptLen: Integer); virtual; abstract;
{$ENDIF}
//internal for multicast membership stuff
procedure MembershipSockOpt(AHandle: TIdStackSocketHandle;
const AGroupIP, ALocalIP : String; const ASockOpt : Integer;
const AIPVersion: TIdIPVersion = ID_DEFAULT_IP_VERSION);
public
constructor Create; override;
function CheckIPVersionSupport(const AIPVersion: TIdIPVersion): boolean; virtual; abstract;
function Receive(ASocket: TIdStackSocketHandle; var VBuffer: TIdBytes): Integer; override;
function Send(ASocket: TIdStackSocketHandle; const ABuffer: TIdBytes;
const AOffset: Integer = 0; const ASize: Integer = -1): Integer; override;
function ReceiveFrom(ASocket: TIdStackSocketHandle; var VBuffer: TIdBytes;
var VIP: string; var VPort: TIdPort; var VIPVersion: TIdIPVersion): Integer; override;
function SendTo(ASocket: TIdStackSocketHandle; const ABuffer: TIdBytes;
const AOffset: Integer; const ASize: Integer; const AIP: string;
const APort: TIdPort; const AIPVersion: TIdIPVersion = ID_DEFAULT_IP_VERSION): Integer; override;
procedure GetSocketOption(ASocket: TIdStackSocketHandle; ALevel: TIdSocketOptionLevel;
AOptName: TIdSocketOption; out AOptVal: Integer); overload; override;
procedure GetSocketOption(ASocket: TIdStackSocketHandle; ALevel: TIdSocketOptionLevel;
AOptName: TIdSocketOption; var AOptVal; var AOptLen: Integer); {$IFDEF VCL_XE3_OR_ABOVE}overload; virtual; abstract;{$ELSE}reintroduce; overload;{$ENDIF}
procedure SetSocketOption(ASocket: TIdStackSocketHandle; ALevel: TIdSocketOptionLevel;
AOptName: TIdSocketOption; AOptVal: Integer); overload; override;
procedure SetSocketOption(ASocket: TIdStackSocketHandle; ALevel: TIdSocketOptionLevel;
AOptName: TIdSocketOption; const AOptVal; const AOptLen: Integer); {$IFDEF VCL_XE3_OR_ABOVE}overload; virtual; abstract;{$ELSE}reintroduce; overload;{$ENDIF}
function TranslateTInAddrToString(var AInAddr; const AIPVersion: TIdIPVersion): string;
procedure TranslateStringToTInAddr(const AIP: string; var AInAddr; const AIPVersion: TIdIPVersion);
function WSGetServByName(const AServiceName: string): TIdPort; virtual; abstract;
function WSGetServByPort(const APortNumber: TIdPort): TStrings; virtual; {$IFDEF HAS_DEPRECATED}deprecated{$IFDEF HAS_DEPRECATED_MSG} 'Use AddServByPortToList()'{$ENDIF};{$ENDIF}
procedure AddServByPortToList(const APortNumber: TIdPort; AAddresses: TStrings); virtual; abstract;
function RecvFrom(const ASocket: TIdStackSocketHandle; var ABuffer;
const ALength, AFlags: Integer; var VIP: string; var VPort: TIdPort;
var VIPVersion: TIdIPVersion): Integer; virtual; abstract;
procedure WSSendTo(ASocket: TIdStackSocketHandle; const ABuffer;
const ABufferLength, AFlags: Integer; const AIP: string; const APort: TIdPort;
AIPVersion: TIdIPVersion = ID_DEFAULT_IP_VERSION); virtual; abstract;
function WSSocket(AFamily : Integer; AStruct : TIdSocketType; AProtocol: Integer;
const AOverlapped: Boolean = False): TIdStackSocketHandle; virtual; abstract;
procedure SetBlocking(ASocket: TIdStackSocketHandle;
const ABlocking: Boolean); virtual; abstract;
function WouldBlock(const AResult: Integer): Boolean; virtual; abstract;
function NewSocketHandle(const ASocketType: TIdSocketType;
const AProtocol: TIdSocketProtocol;
const AIPVersion: TIdIPVersion = ID_DEFAULT_IP_VERSION;
const AOverlapped: Boolean = False)
: TIdStackSocketHandle; override;
//multicast stuff Kudzu permitted me to add here.
procedure SetMulticastTTL(AHandle: TIdStackSocketHandle;
const AValue : Byte; const AIPVersion: TIdIPVersion = ID_DEFAULT_IP_VERSION); override;
procedure SetLoopBack(AHandle: TIdStackSocketHandle; const AValue: Boolean;
const AIPVersion: TIdIPVersion = ID_DEFAULT_IP_VERSION); override;
procedure DropMulticastMembership(AHandle: TIdStackSocketHandle;
const AGroupIP, ALocalIP : String;
const AIPVersion: TIdIPVersion = ID_DEFAULT_IP_VERSION); override;
procedure AddMulticastMembership(AHandle: TIdStackSocketHandle;
const AGroupIP, ALocalIP : String;
const AIPVersion: TIdIPVersion = ID_DEFAULT_IP_VERSION); override;
end;
EIdInvalidServiceName = class(EIdException);
EIdStackInitializationFailed = class (EIdStackError);
EIdStackSetSizeExceeded = class (EIdStackError);
//for some reason, if GDBSDStack is in the same block as GServeFileProc then
//FPC gives a type declaration error.
var
GBSDStack: TIdStackBSDBase = nil;
const
IdIPFamily : array[TIdIPVersion] of Integer = (Id_PF_INET4, Id_PF_INET6);
implementation
uses
//done this way so we can have a separate stack for the Unix systems in FPC
{$IFDEF UNIX}
{$IFDEF KYLIXCOMPAT}
IdStackLibc,
{$ENDIF}
{$IFDEF USE_BASEUNIX}
IdStackUnix,
{$ENDIF}
{$IFDEF USE_VCL_POSIX}
IdStackVCLPosix,
{$ENDIF}
{$ENDIF}
{$IFDEF WINDOWS}
IdStackWindows,
{$ENDIF}
{$IFDEF DOTNET}
IdStackDotNet,
{$ENDIF}
IdResourceStrings,
SysUtils;
{ TIdStackBSDBase }
function TIdStackBSDBase.TranslateTInAddrToString(var AInAddr;
const AIPVersion: TIdIPVersion): string;
var
i: Integer;
begin
case AIPVersion of
Id_IPv4: begin
// TODO: use RtlIpv4AddressToString() on Windows when available...
Result := IntToStr(TIdIn4Addr(AInAddr).S_un_b.s_b1) + '.' {Do not Localize}
+ IntToStr(TIdIn4Addr(AInAddr).S_un_b.s_b2) + '.' {Do not Localize}
+ IntToStr(TIdIn4Addr(AInAddr).S_un_b.s_b3) + '.' {Do not Localize}
+ IntToStr(TIdIn4Addr(AInAddr).S_un_b.s_b4);
end;
Id_IPv6: begin
// TODO: use RtlIpv6AddressToString() on Windows when available...
Result := '';
for i := 0 to 7 do begin
Result := Result + IntToHex(NetworkToHost(TIdIn6Addr(AInAddr).s6_addr16[i]), 1) + ':';
end;
SetLength(Result, Length(Result)-1);
end;
else begin
IPVersionUnsupported;
end;
end;
end;
procedure TIdStackBSDBase.TranslateStringToTInAddr(const AIP: string;
var AInAddr; const AIPVersion: TIdIPVersion);
var
LIP: String;
LAddress: TIdIPv6Address;
begin
case AIPVersion of
Id_IPv4: begin
// TODO: use RtlIpv4StringToAddress() on Windows when available...
LIP := AIP;
TIdIn4Addr(AInAddr).S_un_b.s_b1 := IndyStrToInt(Fetch(LIP, '.')); {Do not Localize}
TIdIn4Addr(AInAddr).S_un_b.s_b2 := IndyStrToInt(Fetch(LIP, '.')); {Do not Localize}
TIdIn4Addr(AInAddr).S_un_b.s_b3 := IndyStrToInt(Fetch(LIP, '.')); {Do not Localize}
TIdIn4Addr(AInAddr).S_un_b.s_b4 := IndyStrToInt(Fetch(LIP, '.')); {Do not Localize}
end;
Id_IPv6: begin
// TODO: use RtlIpv6StringToAddress() on Windows when available...
IPv6ToIdIPv6Address(AIP, LAddress);
TIdIPv6Address(TIdIn6Addr(AInAddr).s6_addr16) := HostToNetwork(LAddress);
end;
else begin
IPVersionUnsupported;
end;
end;
end;
function TIdStackBSDBase.NewSocketHandle(const ASocketType:TIdSocketType;
const AProtocol: TIdSocketProtocol;
const AIPVersion: TIdIPVersion = ID_DEFAULT_IP_VERSION;
const AOverlapped: Boolean = False): TIdStackSocketHandle;
begin
// RLebeau 04/17/2008: Don't use CheckForSocketError() here. It expects
// an Integer error code, not a TSocket handle. When WSSocket() fails,
// it returns Id_INVALID_SOCKET. Although that is technically the same
// value as Id_SOCKET_ERROR, passing Id_INVALID_SOCKET to CheckForSocketError()
// causes a range check error to be raised.
Result := WSSocket(IdIPFamily[AIPVersion], ASocketType, AProtocol, AOverlapped);
if Result = Id_INVALID_SOCKET then begin
RaiseLastSocketError;
end;
end;
constructor TIdStackBSDBase.Create;
begin
inherited Create;
GBSDStack := Self;
end;
function TIdStackBSDBase.Receive(ASocket: TIdStackSocketHandle;
var VBuffer: TIdBytes): Integer;
begin
Result := CheckForSocketError(WSRecv(ASocket, VBuffer[0], Length(VBuffer) , 0));
end;
function TIdStackBSDBase.Send(ASocket: TIdStackSocketHandle; const ABuffer: TIdBytes;
const AOffset: Integer = 0; const ASize: Integer = -1): Integer;
var
Tmp: Byte;
begin
Result := IndyLength(ABuffer, ASize, AOffset);
if Result > 0 then begin
Result := WSSend(ASocket, ABuffer[AOffset], Result, 0);
end else begin
// RLebeau: this is to allow UDP sockets to send 0-length packets.
// Have to use a variable because the Buffer parameter is declared
// as an untyped 'const'...
//
// TODO: check the socket type and only allow this for UDP sockets...
//
Result := WSSend(ASocket, Tmp, 0, 0);
end;
end;
function TIdStackBSDBase.ReceiveFrom(ASocket: TIdStackSocketHandle;
var VBuffer: TIdBytes; var VIP: string; var VPort: TIdPort;
var VIPVersion: TIdIPVersion): Integer;
begin
Result := CheckForSocketError(RecvFrom(ASocket, VBuffer[0], Length(VBuffer),
0, VIP, VPort, VIPVersion));
end;
function TIdStackBSDBase.SendTo(ASocket: TIdStackSocketHandle;
const ABuffer: TIdBytes; const AOffset: Integer; const ASize: Integer;
const AIP: string; const APort: TIdPort;
const AIPVersion: TIdIPVersion = ID_DEFAULT_IP_VERSION): Integer;
var
Tmp: Byte;
begin
Result := IndyLength(ABuffer, ASize, AOffset);
if Result > 0 then begin
WSSendTo(ASocket, ABuffer[AOffset], Result, 0, AIP, APort, AIPVersion);
end else begin
// RLebeau: this is to allow UDP sockets to send 0-length packets.
// Have to use a variable because the Buffer parameter is declared
// as an untyped 'const'...
//
// TODO: check the socket type and only allow this for UDP sockets...
//
WSSendTo(ASocket, Tmp, 0, 0, AIP, APort, AIPVersion);
end;
end;
procedure TIdStackBSDBase.GetSocketOption(ASocket: TIdStackSocketHandle;
ALevel: TIdSocketOptionLevel; AOptName: TIdSocketOption; out AOptVal: Integer);
var
LBuf, LLen: Integer;
begin
LLen := SizeOf(LBuf);
{$IFDEF VCL_XE3_OR_ABOVE}GetSocketOption{$ELSE}WSGetSocketOption{$ENDIF}(ASocket, ALevel, AOptName, LBuf, LLen);
AOptVal := LBuf;
end;
{$IFNDEF VCL_XE3_OR_ABOVE}
procedure TIdStackBSDBase.GetSocketOption(ASocket: TIdStackSocketHandle;
ALevel: TIdSocketOptionLevel; AOptName: TIdSocketOption; var AOptVal;
var AOptLen: Integer);
begin
WSGetSocketOption(ASocket, ALevel, AOptName, AOptVal, AOptLen);
end;
{$ENDIF}
procedure TIdStackBSDBase.SetSocketOption(ASocket: TIdStackSocketHandle;
ALevel: TIdSocketOptionLevel; AOptName: TIdSocketOption; AOptVal: Integer);
begin
{$IFDEF VCL_XE3_OR_ABOVE}SetSocketOption{$ELSE}WSSetSocketOption{$ENDIF}(ASocket, ALevel, AOptName, AOptVal, SizeOf(AOptVal));
end;
{$IFNDEF VCL_XE3_OR_ABOVE}
procedure TIdStackBSDBase.SetSocketOption(ASocket: TIdStackSocketHandle;
ALevel: TIdSocketOptionLevel; AOptName: TIdSocketOption; const AOptVal;
const AOptLen: Integer);
begin
WSSetSocketOption(ASocket, ALevel, AOptName, AOptVal, AOptLen);
end;
{$ENDIF}
procedure TIdStackBSDBase.DropMulticastMembership(AHandle: TIdStackSocketHandle;
const AGroupIP, ALocalIP : String; const AIPVersion: TIdIPVersion = ID_DEFAULT_IP_VERSION);
begin
MembershipSockOpt(AHandle, AGroupIP, ALocalIP,
iif(AIPVersion = Id_IPv4, Id_IP_DROP_MEMBERSHIP, Id_IPV6_DROP_MEMBERSHIP),
AIPVersion);
end;
procedure TIdStackBSDBase.AddMulticastMembership(AHandle: TIdStackSocketHandle;
const AGroupIP, ALocalIP : String; const AIPVersion: TIdIPVersion = ID_DEFAULT_IP_VERSION);
begin
MembershipSockOpt(AHandle, AGroupIP, ALocalIP,
iif(AIPVersion = Id_IPv4, Id_IP_ADD_MEMBERSHIP, Id_IPV6_ADD_MEMBERSHIP),
AIPVersion);
end;
procedure TIdStackBSDBase.SetMulticastTTL(AHandle: TIdStackSocketHandle;
const AValue: Byte; const AIPVersion: TIdIPVersion = ID_DEFAULT_IP_VERSION);
var
LLevel, LOpt: Integer;
begin
case AIPVersion of
Id_IPv4: begin
LLevel := Id_IPPROTO_IP;
LOpt := Id_IP_MULTICAST_TTL;
end;
id_IPv6: begin
LLevel := Id_IPPROTO_IPv6;
LOpt := Id_IPV6_MULTICAST_HOPS;
end;
else begin
// keep the compiler happy
LLevel := 0;
LOpt := 0;
IPVersionUnsupported;
end;
end;
SetSocketOption(AHandle, LLevel, LOpt, AValue);
end;
procedure TIdStackBSDBase.SetLoopBack(AHandle: TIdStackSocketHandle;
const AValue: Boolean; const AIPVersion: TIdIPVersion = ID_DEFAULT_IP_VERSION);
var
LLevel, LOpt: Integer;
begin
case AIPVersion of
Id_IPv4: begin
LLevel := Id_IPPROTO_IP;
LOpt := Id_IP_MULTICAST_LOOP;
end;
Id_IPv6: begin
LLevel := Id_IPPROTO_IPv6;
LOpt := Id_IPV6_MULTICAST_LOOP;
end;
else begin
// keep the compiler happy
LLevel := 0;
LOpt := 0;
IPVersionUnsupported;
end;
end;
SetSocketOption(AHandle, LLevel, LOpt, Ord(AValue));
end;
procedure TIdStackBSDBase.MembershipSockOpt(AHandle: TIdStackSocketHandle;
const AGroupIP, ALocalIP: String; const ASockOpt: Integer;
const AIPVersion: TIdIPVersion = ID_DEFAULT_IP_VERSION);
var
LIP4: TIdIPMreq;
LIP6: TIdIPv6Mreq;
begin
case AIPVersion of
Id_IPv4: begin
if IsValidIPv4MulticastGroup(AGroupIP) then
begin
TranslateStringToTInAddr(AGroupIP, LIP4.IMRMultiAddr, Id_IPv4);
TranslateStringToTInAddr(ALocalIP, LIP4.IMRInterface, Id_IPv4);
SetSocketOption(AHandle, Id_IPPROTO_IP, ASockOpt, LIP4, SizeOf(LIP4));
end;
end;
Id_IPv6: begin
if IsValidIPv6MulticastGroup(AGroupIP) then
begin
TranslateStringToTInAddr(AGroupIP, LIP6.ipv6mr_multiaddr, Id_IPv6);
//this should be safe meaning any adaptor
//we can't support a localhost address in IPv6 because we can't get that
//and even if you could, you would have to convert it into a network adaptor
//index - Yuk
LIP6.ipv6mr_interface := 0;
SetSocketOption(AHandle, Id_IPPROTO_IPv6, ASockOpt, LIP6, SizeOf(LIP6));
end;
end;
else begin
IPVersionUnsupported;
end;
end;
end;
{$I IdDeprecatedImplBugOff.inc}
function TIdStackBSDBase.WSGetServByPort(const APortNumber: TIdPort): TStrings;
{$I IdDeprecatedImplBugOn.inc}
begin
Result := TStringList.Create;
try
AddServByPortToList(APortNumber, Result);
except
FreeAndNil(Result);
raise;
end;
end;
end.
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