754 lines
20 KiB
ObjectPascal
754 lines
20 KiB
ObjectPascal
unit UMQTTClient;
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interface
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uses
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System.SysUtils, System.Classes, System.SyncObjs, System.DateUtils,
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System.Generics.Collections,
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IdTCPClient, IdGlobal, IdExceptionCore, IdException, IdIOHandler;
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type
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TMQTTMessageEvent = procedure(const ATopic, APayload: string) of object;
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TMQTTStatusEvent = procedure(AConnected: Boolean; const AErrorMsg: string) of object;
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TMQTTRecvThread = class;
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TMQTTClient = class
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private
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FHost: string;
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FPort: Word;
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FClientID: string;
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FUserName: string;
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FPassword: string;
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FTCPClient: TIdTCPClient;
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FRecvThread: TMQTTRecvThread;
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FOnMessage: TMQTTMessageEvent;
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FOnStatus: TMQTTStatusEvent;
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FConnected: Boolean;
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FSubscribeTopics: TStringList;
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FKeepAlive: Word;
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FPacketID: Word;
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FActive: Boolean;
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FSendQueue: TList<TIdBytes>;
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FSendLock: TCriticalSection;
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function NextPacketID: Word;
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function BuildConnectPacket: TIdBytes;
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function BuildSubscribePacket(const ATopic: string): TIdBytes;
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function BuildPingReqPacket: TIdBytes;
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function BuildDisconnectPacket: TIdBytes;
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function BuildPublishPacket(const ATopic, APayload: string): TIdBytes;
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function EncodeRemainingLength(ALength: Integer): TIdBytes;
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function BuildUnsubscribePacket(const ATopic: string): TIdBytes;
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procedure SetConnected(AValue: Boolean; const AErrorMsg: string = '');
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procedure FireMessage(const ATopic, APayload: string);
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procedure EnqueuePacket(const AData: TIdBytes);
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public
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constructor Create(const AHost: string; APort: Word; const AClientID: string = ''; const AUserName: string = ''; const APassword: string = '');
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destructor Destroy; override;
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procedure Connect;
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procedure Disconnect;
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procedure Subscribe(const ATopic: string);
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procedure Unsubscribe(const ATopic: string);
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procedure Publish(const ATopic, APayload: string);
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property Host: string read FHost write FHost;
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property Port: Word read FPort write FPort;
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property UserName: string read FUserName write FUserName;
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property Password: string read FPassword write FPassword;
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property Connected: Boolean read FConnected;
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property OnMessage: TMQTTMessageEvent read FOnMessage write FOnMessage;
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property OnStatus: TMQTTStatusEvent read FOnStatus write FOnStatus;
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end;
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TMQTTRecvThread = class(TThread)
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private
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FOwner: TMQTTClient;
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function ReadRemainingLength: Integer;
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procedure ProcessPublish(ARemainingLen: Integer);
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function FlushSendQueue: Boolean;
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protected
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procedure Execute; override;
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public
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constructor Create(AOwner: TMQTTClient);
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end;
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implementation
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{ TMQTTClient }
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constructor TMQTTClient.Create(const AHost: string; APort: Word; const AClientID: string; const AUserName: string; const APassword: string);
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begin
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inherited Create;
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FHost := AHost;
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FPort := APort;
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FUserName := AUserName;
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FPassword := APassword;
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Randomize;
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if AClientID <> '' then
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FClientID := AClientID + IntToStr(Random(99999))
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else
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FClientID := 'Qsentech' + IntToStr(Random(99999));
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FKeepAlive := 60;
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FPacketID := 0;
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FConnected := False;
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FActive := False;
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FSubscribeTopics := TStringList.Create;
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FSubscribeTopics.Sorted := True;
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FSubscribeTopics.Duplicates := dupIgnore;
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FSendQueue := TList<TIdBytes>.Create;
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FSendLock := TCriticalSection.Create;
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FTCPClient := TIdTCPClient.Create(nil);
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FTCPClient.ConnectTimeout := 5000;
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// ReadTimeout: 읽기 대기 시간 (500ms 폴링 주기)
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FTCPClient.ReadTimeout := 500;
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end;
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destructor TMQTTClient.Destroy;
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begin
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Disconnect;
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FTCPClient.Free;
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FSendQueue.Free;
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FSendLock.Free;
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FSubscribeTopics.Free;
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inherited;
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end;
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function TMQTTClient.NextPacketID: Word;
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begin
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Inc(FPacketID);
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if FPacketID = 0 then
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FPacketID := 1;
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Result := FPacketID;
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end;
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function TMQTTClient.EncodeRemainingLength(ALength: Integer): TIdBytes;
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var
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EncodedByte: Byte;
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Len: Integer;
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begin
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SetLength(Result, 0);
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Len := ALength;
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repeat
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EncodedByte := Len mod 128;
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Len := Len div 128;
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if Len > 0 then
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EncodedByte := EncodedByte or $80;
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SetLength(Result, Length(Result) + 1);
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Result[High(Result)] := EncodedByte;
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until Len = 0;
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end;
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{
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function TMQTTClient.BuildConnectPacket: TIdBytes;
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var
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VarHeader, Payload, Remaining, Packet: TIdBytes;
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ClientIDBytes: TIdBytes;
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RemLen: Integer;
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begin
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SetLength(VarHeader, 10);
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VarHeader[0] := 0;
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VarHeader[1] := 4;
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VarHeader[2] := Ord('M');
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VarHeader[3] := Ord('Q');
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VarHeader[4] := Ord('T');
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VarHeader[5] := Ord('T');
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VarHeader[6] := 4;
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VarHeader[7] := 2;
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VarHeader[8] := Hi(FKeepAlive);
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VarHeader[9] := Lo(FKeepAlive);
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ClientIDBytes := ToBytes(FClientID, IndyTextEncoding_UTF8);
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SetLength(Payload, 2 + Length(ClientIDBytes));
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Payload[0] := Hi(Word(Length(ClientIDBytes)));
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Payload[1] := Lo(Word(Length(ClientIDBytes)));
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if Length(ClientIDBytes) > 0 then
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CopyTIdBytes(ClientIDBytes, 0, Payload, 2, Length(ClientIDBytes));
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RemLen := Length(VarHeader) + Length(Payload);
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Remaining := EncodeRemainingLength(RemLen);
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SetLength(Packet, 1 + Length(Remaining) + RemLen);
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Packet[0] := $10;
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CopyTIdBytes(Remaining, 0, Packet, 1, Length(Remaining));
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CopyTIdBytes(VarHeader, 0, Packet, 1 + Length(Remaining), Length(VarHeader));
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CopyTIdBytes(Payload, 0, Packet, 1 + Length(Remaining) + Length(VarHeader), Length(Payload));
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Result := Packet;
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end;
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}
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function TMQTTClient.BuildConnectPacket: TIdBytes;
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var
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VarHeader, Payload, Remaining, Packet: TIdBytes;
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ClientIDBytes: TIdBytes;
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UserBytes: TIdBytes;
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PassBytes: TIdBytes;
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RemLen: Integer;
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P: Integer;
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ConnectFlags: Byte;
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procedure AddMQTTString(var Dest: TIdBytes; const Data: TIdBytes);
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var
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OldLen: Integer;
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begin
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OldLen := Length(Dest);
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SetLength(Dest, OldLen + 2 + Length(Data));
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Dest[OldLen] := Hi(Word(Length(Data)));
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Dest[OldLen + 1] := Lo(Word(Length(Data)));
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if Length(Data) > 0 then
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CopyTIdBytes(Data, 0, Dest, OldLen + 2, Length(Data));
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end;
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begin
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// =========================
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// CONNECT FLAGS 생성
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// =========================
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ConnectFlags := $02; // Clean Session
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if FUserName <> '' then
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ConnectFlags := ConnectFlags or $80;
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if FPassword <> '' then
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ConnectFlags := ConnectFlags or $40;
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// =========================
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// Variable Header
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// =========================
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SetLength(VarHeader, 10);
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VarHeader[0] := 0;
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VarHeader[1] := 4;
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VarHeader[2] := Ord('M');
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VarHeader[3] := Ord('Q');
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VarHeader[4] := Ord('T');
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VarHeader[5] := Ord('T');
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VarHeader[6] := 4; // MQTT 3.1.1
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VarHeader[7] := ConnectFlags;
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VarHeader[8] := Hi(FKeepAlive);
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VarHeader[9] := Lo(FKeepAlive);
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// =========================
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// Payload
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// =========================
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SetLength(Payload, 0);
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// Client ID
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ClientIDBytes := ToBytes(FClientID, IndyTextEncoding_UTF8);
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AddMQTTString(Payload, ClientIDBytes);
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// Username
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if FUserName <> '' then
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begin
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UserBytes := ToBytes(FUserName, IndyTextEncoding_UTF8);
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AddMQTTString(Payload, UserBytes);
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end;
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// Password
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if FPassword <> '' then
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begin
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PassBytes := ToBytes(FPassword, IndyTextEncoding_UTF8);
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AddMQTTString(Payload, PassBytes);
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end;
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// =========================
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// Remaining Length
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// =========================
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RemLen := Length(VarHeader) + Length(Payload);
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Remaining := EncodeRemainingLength(RemLen);
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// =========================
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// Fixed Header
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// =========================
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SetLength(Packet, 1 + Length(Remaining) + RemLen);
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Packet[0] := $10;
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P := 1;
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CopyTIdBytes(Remaining, 0, Packet, P, Length(Remaining));
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Inc(P, Length(Remaining));
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CopyTIdBytes(VarHeader, 0, Packet, P, Length(VarHeader));
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Inc(P, Length(VarHeader));
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CopyTIdBytes(Payload, 0, Packet, P, Length(Payload));
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Result := Packet;
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end;
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function TMQTTClient.BuildSubscribePacket(const ATopic: string): TIdBytes;
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var
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TopicBytes, VarHeader, Payload, Remaining, Packet: TIdBytes;
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PID: Word;
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RemLen: Integer;
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begin
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PID := NextPacketID;
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SetLength(VarHeader, 2);
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VarHeader[0] := Hi(PID);
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VarHeader[1] := Lo(PID);
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TopicBytes := ToBytes(ATopic, IndyTextEncoding_UTF8);
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SetLength(Payload, 2 + Length(TopicBytes) + 1);
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Payload[0] := Hi(Word(Length(TopicBytes)));
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Payload[1] := Lo(Word(Length(TopicBytes)));
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CopyTIdBytes(TopicBytes, 0, Payload, 2, Length(TopicBytes));
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Payload[2 + Length(TopicBytes)] := 0;
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RemLen := Length(VarHeader) + Length(Payload);
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Remaining := EncodeRemainingLength(RemLen);
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SetLength(Packet, 1 + Length(Remaining) + RemLen);
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Packet[0] := $82;
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CopyTIdBytes(Remaining, 0, Packet, 1, Length(Remaining));
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CopyTIdBytes(VarHeader, 0, Packet, 1 + Length(Remaining), Length(VarHeader));
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CopyTIdBytes(Payload, 0, Packet, 1 + Length(Remaining) + Length(VarHeader), Length(Payload));
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Result := Packet;
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end;
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function TMQTTClient.BuildUnsubscribePacket(const ATopic: string): TIdBytes;
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var
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TopicBytes, VarHeader, Payload, Remaining, Packet: TIdBytes;
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PID: Word;
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RemLen: Integer;
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begin
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PID := NextPacketID;
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SetLength(VarHeader, 2);
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VarHeader[0] := Hi(PID);
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VarHeader[1] := Lo(PID);
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TopicBytes := ToBytes(ATopic, IndyTextEncoding_UTF8);
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SetLength(Payload, 2 + Length(TopicBytes));
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Payload[0] := Hi(Word(Length(TopicBytes)));
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Payload[1] := Lo(Word(Length(TopicBytes)));
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CopyTIdBytes(TopicBytes, 0, Payload, 2, Length(TopicBytes));
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RemLen := Length(VarHeader) + Length(Payload);
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Remaining := EncodeRemainingLength(RemLen);
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SetLength(Packet, 1 + Length(Remaining) + RemLen);
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Packet[0] := $A2;
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CopyTIdBytes(Remaining, 0, Packet, 1, Length(Remaining));
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CopyTIdBytes(VarHeader, 0, Packet, 1 + Length(Remaining), Length(VarHeader));
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CopyTIdBytes(Payload, 0, Packet, 1 + Length(Remaining) + Length(VarHeader), Length(Payload));
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Result := Packet;
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end;
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function TMQTTClient.BuildPingReqPacket: TIdBytes;
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begin
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SetLength(Result, 2);
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Result[0] := $C0;
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Result[1] := $00;
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end;
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function TMQTTClient.BuildDisconnectPacket: TIdBytes;
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begin
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SetLength(Result, 2);
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Result[0] := $E0;
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Result[1] := $00;
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end;
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function TMQTTClient.BuildPublishPacket(const ATopic, APayload: string): TIdBytes;
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var
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TopicBytes, PayloadBytes, Remaining, Packet: TIdBytes;
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RemLen, Offset: Integer;
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begin
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TopicBytes := ToBytes(ATopic, IndyTextEncoding_UTF8);
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PayloadBytes := ToBytes(APayload, IndyTextEncoding_UTF8);
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RemLen := 2 + Length(TopicBytes) + Length(PayloadBytes);
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Remaining := EncodeRemainingLength(RemLen);
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SetLength(Packet, 1 + Length(Remaining) + RemLen);
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Packet[0] := $30;
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Offset := 1;
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CopyTIdBytes(Remaining, 0, Packet, Offset, Length(Remaining));
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Inc(Offset, Length(Remaining));
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Packet[Offset] := Hi(Word(Length(TopicBytes)));
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Packet[Offset + 1] := Lo(Word(Length(TopicBytes)));
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Inc(Offset, 2);
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CopyTIdBytes(TopicBytes, 0, Packet, Offset, Length(TopicBytes));
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Inc(Offset, Length(TopicBytes));
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if Length(PayloadBytes) > 0 then
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CopyTIdBytes(PayloadBytes, 0, Packet, Offset, Length(PayloadBytes));
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Result := Packet;
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end;
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procedure TMQTTClient.EnqueuePacket(const AData: TIdBytes);
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begin
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FSendLock.Enter;
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try
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FSendQueue.Add(AData);
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finally
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FSendLock.Leave;
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end;
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end;
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procedure TMQTTClient.SetConnected(AValue: Boolean; const AErrorMsg: string = '');
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var
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LStatusEvent: TMQTTStatusEvent;
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begin
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// 상태가 실제로 변경될 때만 이벤트 발생 (UI 플리커 방지)
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// if FConnected = AValue then Exit; // 에러 로깅을 위해 매번 발생시키도록 수정
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FConnected := AValue;
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LStatusEvent := FOnStatus;
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if Assigned(LStatusEvent) then
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begin
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TThread.Queue(nil,
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procedure
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begin
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if Assigned(LStatusEvent) then
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LStatusEvent(AValue, AErrorMsg);
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end);
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end;
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end;
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procedure TMQTTClient.FireMessage(const ATopic, APayload: string);
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var
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LTopic, LPayload: string;
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LMessageEvent: TMQTTMessageEvent;
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begin
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LTopic := ATopic;
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LPayload := APayload;
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LMessageEvent := FOnMessage;
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if Assigned(LMessageEvent) then
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begin
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TThread.Queue(nil,
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procedure
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begin
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if Assigned(LMessageEvent) then
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LMessageEvent(LTopic, LPayload);
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end);
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end;
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end;
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procedure TMQTTClient.Connect;
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begin
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if FActive then
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Exit;
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FActive := True;
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FRecvThread := TMQTTRecvThread.Create(Self);
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end;
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procedure TMQTTClient.Disconnect;
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begin
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FActive := False;
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if FRecvThread <> nil then
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begin
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FRecvThread.Terminate;
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FRecvThread.WaitFor;
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FreeAndNil(FRecvThread);
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end;
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FConnected := False;
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if Assigned(FOnStatus) then
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FOnStatus(False, 'User Disconnected');
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end;
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procedure TMQTTClient.Subscribe(const ATopic: string);
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begin
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if FSubscribeTopics.IndexOf(ATopic) < 0 then
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FSubscribeTopics.Add(ATopic);
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if FConnected then
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EnqueuePacket(BuildSubscribePacket(ATopic));
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end;
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procedure TMQTTClient.Unsubscribe(const ATopic: string);
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var
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Idx: Integer;
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begin
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Idx := FSubscribeTopics.IndexOf(ATopic);
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if Idx >= 0 then
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FSubscribeTopics.Delete(Idx);
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if FConnected then
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EnqueuePacket(BuildUnsubscribePacket(ATopic));
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end;
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procedure TMQTTClient.Publish(const ATopic, APayload: string);
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begin
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if FConnected then
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EnqueuePacket(BuildPublishPacket(ATopic, APayload));
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end;
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{ TMQTTRecvThread }
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constructor TMQTTRecvThread.Create(AOwner: TMQTTClient);
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begin
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inherited Create(False);
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FreeOnTerminate := False;
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FOwner := AOwner;
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end;
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function TMQTTRecvThread.ReadRemainingLength: Integer;
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var
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Multiplier: Integer;
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EncodedByte: Byte;
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begin
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Result := 0;
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Multiplier := 1;
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repeat
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EncodedByte := FOwner.FTCPClient.IOHandler.ReadByte;
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Result := Result + (EncodedByte and $7F) * Multiplier;
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Multiplier := Multiplier * 128;
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until (EncodedByte and $80) = 0;
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end;
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procedure TMQTTRecvThread.ProcessPublish(ARemainingLen: Integer);
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var
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TopicLen: Word;
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TopicBytes, PayloadBytes: TIdBytes;
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Topic, Payload: string;
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PayloadLen: Integer;
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begin
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TopicLen := FOwner.FTCPClient.IOHandler.ReadByte shl 8;
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TopicLen := TopicLen or FOwner.FTCPClient.IOHandler.ReadByte;
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FOwner.FTCPClient.IOHandler.ReadBytes(TopicBytes, TopicLen);
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Topic := BytesToString(TopicBytes, IndyTextEncoding_UTF8);
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PayloadLen := ARemainingLen - 2 - TopicLen;
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if PayloadLen > 0 then
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begin
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FOwner.FTCPClient.IOHandler.ReadBytes(PayloadBytes, PayloadLen);
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Payload := BytesToString(PayloadBytes, IndyTextEncoding_UTF8);
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end
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else
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|
Payload := '';
|
|
|
|
FOwner.FireMessage(Topic, Payload);
|
|
end;
|
|
|
|
function TMQTTRecvThread.FlushSendQueue: Boolean;
|
|
var
|
|
Packets: TList<TIdBytes>;
|
|
Pkt: TIdBytes;
|
|
begin
|
|
Result := True;
|
|
Packets := nil;
|
|
|
|
FOwner.FSendLock.Enter;
|
|
try
|
|
if FOwner.FSendQueue.Count > 0 then
|
|
begin
|
|
Packets := TList<TIdBytes>.Create;
|
|
Packets.AddRange(FOwner.FSendQueue);
|
|
FOwner.FSendQueue.Clear;
|
|
end;
|
|
finally
|
|
FOwner.FSendLock.Leave;
|
|
end;
|
|
|
|
if Packets <> nil then
|
|
begin
|
|
try
|
|
for Pkt in Packets do
|
|
begin
|
|
try
|
|
FOwner.FTCPClient.IOHandler.Write(Pkt);
|
|
except
|
|
Result := False;
|
|
Break;
|
|
end;
|
|
end;
|
|
finally
|
|
Packets.Free;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
procedure TMQTTRecvThread.Execute;
|
|
var
|
|
ConnAckBuf: TIdBytes;
|
|
PacketType: Byte;
|
|
RemainingLen: Integer;
|
|
DiscardBuf: TIdBytes;
|
|
LastPingTime: TDateTime;
|
|
PingIntervalSec: Integer;
|
|
begin
|
|
PingIntervalSec := FOwner.FKeepAlive div 2;
|
|
if PingIntervalSec < 10 then
|
|
PingIntervalSec := 10;
|
|
|
|
while not Terminated do
|
|
begin
|
|
// === Connection Phase ===
|
|
try
|
|
FOwner.FTCPClient.Host := FOwner.FHost;
|
|
FOwner.FTCPClient.Port := FOwner.FPort;
|
|
FOwner.FTCPClient.Connect;
|
|
|
|
FOwner.FTCPClient.IOHandler.ReadTimeout := 500; // 읽기 타임아웃 재설정
|
|
|
|
// CONNECT 패킷 전송
|
|
FOwner.FTCPClient.IOHandler.Write(FOwner.BuildConnectPacket);
|
|
|
|
// 무한대기 읽기로 CONNACK 수신 (접속시에만)
|
|
FOwner.FTCPClient.IOHandler.ReadTimeout := 500;
|
|
var WaitCount := 0;
|
|
while (WaitCount < 20) and not Terminated do
|
|
begin
|
|
FOwner.FTCPClient.IOHandler.CheckForDataOnSource(500);
|
|
if not FOwner.FTCPClient.IOHandler.InputBufferIsEmpty then
|
|
Break;
|
|
Inc(WaitCount);
|
|
end;
|
|
|
|
if Terminated then Break;
|
|
FOwner.FTCPClient.IOHandler.ReadBytes(ConnAckBuf, 4, False);
|
|
|
|
if (Length(ConnAckBuf) >= 4) and (ConnAckBuf[0] = $20) and (ConnAckBuf[3] = $00) then
|
|
begin
|
|
FOwner.SetConnected(True, '');
|
|
LastPingTime := Now;
|
|
|
|
// Subscribe all registered topics
|
|
for var I := 0 to FOwner.FSubscribeTopics.Count - 1 do
|
|
begin
|
|
FOwner.FTCPClient.IOHandler.Write(FOwner.BuildSubscribePacket(FOwner.FSubscribeTopics[I]));
|
|
end;
|
|
end
|
|
else
|
|
begin
|
|
try FOwner.FTCPClient.Disconnect; except end;
|
|
if Length(ConnAckBuf) >= 4 then
|
|
FOwner.SetConnected(False, '서버 접속 거부됨 (Return Code: ' + IntToStr(ConnAckBuf[3]) + ')')
|
|
else
|
|
FOwner.SetConnected(False, '서버 응답 없음 (CONNACK 타임아웃)');
|
|
if not Terminated then Sleep(5000);
|
|
Continue;
|
|
end;
|
|
except
|
|
on E: Exception do
|
|
begin
|
|
FOwner.SetConnected(False, '소켓 통신 에러: ' + E.Message);
|
|
try FOwner.FTCPClient.Disconnect; except end;
|
|
if not Terminated then Sleep(5000);
|
|
Continue;
|
|
end;
|
|
end;
|
|
|
|
// === Receive Loop ===
|
|
while not Terminated do
|
|
begin
|
|
// 1) 송신 큐 flush
|
|
if not FlushSendQueue then
|
|
Break; // 전송 실패 = 연결 끊김
|
|
|
|
// 2) PINGREQ 주기적 전송
|
|
if SecondsBetween(Now, LastPingTime) >= PingIntervalSec then
|
|
begin
|
|
LastPingTime := Now;
|
|
try
|
|
FOwner.FTCPClient.IOHandler.Write(FOwner.BuildPingReqPacket);
|
|
except
|
|
Break; // 전송 실패 = 연결 끊김
|
|
end;
|
|
end;
|
|
|
|
// 3) 소켓에서 데이터 읽기 시도
|
|
if FOwner.FTCPClient.IOHandler.InputBufferIsEmpty then
|
|
begin
|
|
FOwner.FTCPClient.IOHandler.CheckForDataOnSource(500);
|
|
if FOwner.FTCPClient.IOHandler.InputBufferIsEmpty then
|
|
Continue;
|
|
end;
|
|
|
|
try
|
|
PacketType := FOwner.FTCPClient.IOHandler.ReadByte;
|
|
except
|
|
on E: EIdConnClosedGracefully do
|
|
begin
|
|
Break;
|
|
end;
|
|
on E: EIdException do
|
|
begin
|
|
Break;
|
|
end;
|
|
on E: Exception do
|
|
begin
|
|
Break;
|
|
end;
|
|
end;
|
|
|
|
// 4) 패킷 나머지 읽기 (데이터가 있으므로 타임아웃 가능성 낮음)
|
|
try
|
|
RemainingLen := ReadRemainingLength;
|
|
|
|
case (PacketType and $F0) of
|
|
$30: // PUBLISH
|
|
ProcessPublish(RemainingLen);
|
|
|
|
$90: // SUBACK
|
|
begin
|
|
if RemainingLen > 0 then
|
|
FOwner.FTCPClient.IOHandler.ReadBytes(DiscardBuf, RemainingLen);
|
|
end;
|
|
|
|
$D0: // PINGRESP
|
|
begin
|
|
// Keep-Alive 확인 완료
|
|
if RemainingLen > 0 then
|
|
FOwner.FTCPClient.IOHandler.ReadBytes(DiscardBuf, RemainingLen);
|
|
end;
|
|
|
|
else
|
|
// 알 수 없는 패킷 — 남은 바이트 소비
|
|
if RemainingLen > 0 then
|
|
FOwner.FTCPClient.IOHandler.ReadBytes(DiscardBuf, RemainingLen);
|
|
end;
|
|
except
|
|
// 패킷 파싱 중 오류 = 연결 끊김
|
|
Break;
|
|
end;
|
|
end;
|
|
|
|
// === 연결 끊김 처리 ===
|
|
FOwner.SetConnected(False, '네트워크 단절');
|
|
if not Terminated then
|
|
begin
|
|
try FOwner.FTCPClient.Disconnect; except end;
|
|
for var I := 1 to 50 do
|
|
begin
|
|
if Terminated then Break;
|
|
Sleep(100);
|
|
end;
|
|
end else
|
|
begin
|
|
try
|
|
if FOwner.FTCPClient.Connected and (FOwner.FTCPClient.IOHandler <> nil) then
|
|
FOwner.FTCPClient.IOHandler.Write(FOwner.BuildDisconnectPacket);
|
|
except end;
|
|
try FOwner.FTCPClient.Disconnect; except end;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
end.
|