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📁 delphiUDP安全传输代码示例,欢迎下载.
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object Form1: TForm1
  Left = 192
  Top = 114
  Width = 362
  Height = 510
  Caption = #21457#36865#31383#20307
  Color = clBtnFace
  Font.Charset = DEFAULT_CHARSET
  Font.Color = clWindowText
  Font.Height = -11
  Font.Name = 'MS Sans Serif'
  Font.Style = []
  OldCreateOrder = False
  OnCreate = FormCreate
  OnDestroy = FormDestroy
  PixelsPerInch = 96
  TextHeight = 13
  object Label1: TLabel
    Left = 24
    Top = 296
    Width = 84
    Height = 13
    Caption = #21457#36865#30340#23383#33410#25968
  end
  object Label2: TLabel
    Left = 24
    Top = 328
    Width = 126
    Height = 13
    Caption = #27599#21457#36865#19968#20010#21253#30340#38388#38548
  end
  object Label3: TLabel
    Left = 24
    Top = 352
    Width = 140
    Height = 13
    Caption = #35748#20026#26159#20002#21253#30340#36229#26102#26102#38388
  end
  object Label4: TLabel
    Left = 168
    Top = 352
    Width = 126
    Height = 13
    Caption = #21457#36865#38431#21015#30340#23481#32435#25968#37327
  end
  object Label5: TLabel
    Left = 24
    Top = 392
    Width = 84
    Height = 13
    Caption = #27599#20010#21253#30340#22823#23567
  end
  object Label6: TLabel
    Left = 168
    Top = 392
    Width = 66
    Height = 13
    Caption = #25509#25910#31471#30340'IP'
  end
  object Button1: TButton
    Left = 55
    Top = 442
    Width = 78
    Height = 25
    Caption = #21457#36865
    TabOrder = 0
    OnClick = Button1Click
  end
  object Memo1: TMemo
    Left = 19
    Top = 17
    Width = 309
    Height = 277
    Lines.Strings = (
      '{*******************************************************}'
      '{      '#21333#20803#21517#65306'  UntUdpCtl.pas                          }'
      '{      '#21019#24314#26085#26399#65306'2006-6-9 14:20:12                      }'
      '{      '#21019#24314#32773'    '#39532#25935#38026'                                 }'
      '{      '#21151#33021#65306'    V1.0                                   }'
      '{                UDP'#30340#23433#20840#20256#36755#25511#21046#31867#26242#26102#22522#20110'NMUDP       '
      '}'
      '{                 '#36127#36131'                                  }'
      '{                  '#20998#21253#25511#21046'                             }'
      '{                  '#24212#31572#25511#21046'                             }'
      '{                  '#37325#21457#25511#21046'                             }'
      '{            '#21253#22836#22823#20110'CSafeUdpData'#30340#25968#25454#23601#26159#26412#31867#30340'       '
      '}'
      '{            '#25511#21046#22788#29702#21327#35758'                               }'
      '{*******************************************************}'
      ''
      'unit UntUdpCtl;'
      ''
      'interface'
      ''
      'uses Classes, NMUDP, sysutils;'
      ''
      'const'
      '  CSafeUdpData = 100000; {UDP'#25968#25454#25511#21046#21253#30340#26368#20302#21629#20196
      #21495'}'
      '  CSafeUdpData_Uses = 200000; {'#29992#25143#20351#29992#30340#21629#20196'}'
      '  CSafeUdpData_RecvResp = CSafeUdpData_Uses + 1; //'#22238
      #24212#25910#21040#21629#20196
      ''
      'type'
      '  EUdpCtlReTryNoResp = class(Exception); {'#37325#35797'N'#27425#21518#25253
      #38169'}'
      '  EUdpCtlTimeOut = class(Exception); {'#19968#30452#37325#35797#30452#21040#36229#26102'}'
      '  {'#20002#21253#30340#22788#29702#26041#24335'}'
      '  SHeadLv = (SDoDrop {'#37325#35797'N'#27425#21518#23601#19981#20877#21457#36865'}, '
      'SDoError {'
      #37325#35797'N'#27425#21518#25253#38169'}, SDoTimeOut {'#19968#30452#37325#35797#30452#21040#36229#26102'});'
      '  {'#21253#22836'}'
      '  PSafeUdphead = ^RSafeUdphead;'
      '  RSafeUdphead = packed record'
      '    Id: Integer; {'#21629#20196#21495'}'
      '    Part, TotPart: Byte; {'#21253#30340#31532#20960#37096#20998','#20849#26377#20960#37096#20998',}'
      '    Lv: SheadLv; {'#21253#30340#31561#32423' 0'#12289' 1'#12289' 2}'
      '    PackedId: Cardinal; {'#21253#30340'ID'#21495' '#65292#22914#26524#27492#21495#22823#20110'0'#35828#26126
      #38656#35201
      #22238#24212'}'
      '    Size: Cardinal; {'#22823#23567'}'
      '  end;'
      '  {'#25968#25454#21253'}'
      '  PSafeUdpData = ^RSafeUdpData;'
      '  RSafeUdpData = packed record'
      '    Head: RSafeUdphead; {'#21253#22836'}'
      '    Data: Pointer; {'#21253#20307'}'
      '    SendTime: Cardinal; {'#21457#36865#26102#38388'}'
      '    ReTryCount: Byte; {'#37325#35797#27425#25968'}'
      '  end;'
      '  {'#28151#21512#21253#31867'}'
      '  TDataMixer = class'
      '  public'
      '    Id: Cardinal; {'#21253#30340'ID}'
      '    BeginTime: Cardinal; {'#24320#22987#28151#21512#30340#26102#38388'}'
      '    TotPart, CurrPart: Byte; {'#21253#30340#24635#25968#65292#29616#26377#30340#21253#25968'}'
      '    DataList: TStrings; {'#25968#25454#21015#34920'}'
      '    constructor Create();'
      '    destructor Destroy; override;'
      '  end;'
      ''
      '  SUDPSendKind = (SUSKFreeWindows {'#28369#21160#31383#21475#27169#24335'}, '
      'SUSKOnlyOne {'#27599#27425#21482#21457#36865#19968#20010#21629#20196#30452#21040#36820#22238#25165#32487#32493
      '});'
      '  SUdpCtlState = (SRaiseExpection {'#25243#20986#24322#24120'}, '
      'SUseErrorEvent {'#25191#34892#38169#35823#20107#20214'}); {Udp'#25511#21046#29366#24577'}'
      '  TudpCtl = class;'
      '  TUdpSenderThread = class(TThread) {'#25968#25454#21457#36865#22788#29702#32447#31243
      '}'
      '  public'
      '    Owner: TudpCtl;'
      '    procedure Execute; override;'
      '    constructor Create(ISStop: boolean; IOwner: TudpCtl);'
      '  end;'
      '  TSafeUDPRecData = procedure(ISender: TudpCtl; IData: '
      'Pointer; ISize: Cardinal;'
      '    IFromIP: string; IPort: integer) of object;'
      '  TSafeUDPError = procedure(Sender: TObject; IData: '
      'PSafeUdpData; IErrorKind: SHeadLv) of object;'
      '  TudpCtl = class(TNMUDP)'
      '  private'
      '    FSendKind: SUDPSendKind;'
      '    FErrorKind: SUdpCtlState;'
      '    FFreeWindowsCount: Byte;'
      '    FPackedId: Cardinal;'
      '    procedure ClearOneData(iidx: Integer; IList: Tstrings); '
      'overload; {'#37322#25918#19968#20010#21253'}'
      '    procedure ClearList(IList: TStrings); {'#28165#31354#21015#34920'}'
      '    function GetAnPackedId: Cardinal; {'#33719#21462#19968#20010#25968#25454#21253'ID}'
      '    function GetAnPackedData(IDataSize: integer): '
      'PSafeUdpData; {'#33719#21462#19968#20010#21253'}'
      '    procedure CheckState; {'#29366#24577#26816#26597'}'
      '    procedure OnData(Sender: TComponent; NumberBytes: '
      'Integer; FromIP: string; Port: integer); {'#22788#29702#25509#25910#25968#25454'}'
      '  protected'
      '    SenderThread: TUdpSenderThread; {'#21457#36865#22788#29702#32447#31243'}'
      '    SendedList, SendingList, DataMixList: TStrings; {'#24050#21457#36865#30340
      #25968
      #25454#21015#34920#65292#38431#21015#20013#31561#24453#21457#36865#30340#25968#25454#21015#34920'}'
      '    SendMemory: TMemoryStream; {'#27491#22312#21457#36865#32531#20914#65292#21644#21097
      #20313#21457
      #36865#32531#20914'}'
      
        '//--------------------------------------------------------------' +
        '----------------'
      '// '#33258#21160#35302#21457#30340#20107#20214' 2006-6-5 '#39532#25935#38026
      
        '//--------------------------------------------------------------' +
        '----------------'
      '    procedure OnReSendEvent(Sender: TObject); {'#21040#26102#37325#21457
      #20107
      #20214'}'
      '    procedure OnTimeOutEvent(Sender: TObject); {'#25509#25910#36229#26102
      #20107
      #20214'}'
      
        '//--------------------------------------------------------------' +
        '----------------'
      '// '#21487#20379#23376#31867#25913#20889#30340#26041#27861' 2006-6-9 '#39532#25935#38026
      
        '//--------------------------------------------------------------' +
        '----------------'
      '    procedure PackedData(var IBuff; ISize: Cardinal; Ilv: '
      'SheadLv); {'#21253#35065#25968#25454'}'
      '    procedure UnPackedData(IMixer: TDataMixer); {'#21453#21253#35065#25968
      #25454
      '}'
      '    procedure AddToSendList(IId: string; IData: Pointer);'
      '    procedure DidSend(IData: PSafeUdpData); {'#23454#38469#30340#21457#36865
      #36807
      #31243'}'
      '    function CheckPacked(IData: PSafeUdphead): Integer;'
      '    function MixData(IData: PSafeUdpData; Iidx: integer): '
      'boolean;'
      '  public'
      '    MaxReSendCount: Byte; {'#26368#22823#37325#35797#27425#25968' '#40664#35748#20026'3}'
      '    PeerSize: Word; {'#20998#21253#26102#27599#20010#21253#30340#22823#23567' '#40664#35748#20026'1024}'
      '    WaiteTimeOut, ReSendTime: Cardinal; {'#36229#26102#26102#38388' '#40664#35748
      #20026'3000,'#20002#21253#37325#21457#26102#38388'500}'
      '    CurrRealData {'#24403#21069#30340#23454#38469#24050#32463#22788#29702#23436#27605#30340#21253'}: '
      'TMemoryStream;'
      '    CurrDataSize: Cardinal; {'#24403#21069#25968#25454#30340#22823#23567'}'
      '    OnDataCase: TSafeUDPRecData; {'#29992#25143#33258#24049#30340#22788#29702#20107
      #20214'}'
      '    OnDataError: TSafeUDPError; {'#25968#25454#38169#35823#26102#35302#21457#30340#20107#20214
      '}'
      
        '//--------------------------------------------------------------' +
        '----------------'
      '// '#23646#24615' 2006-6-9 '#39532#25935#38026
      
        '//--------------------------------------------------------------' +
        '----------------'
      '   {'#38169#35823#22788#29702#26041#24335' '#40664#35748#20026#20351#29992#20107#20214'}'
      '    property ErrorKind: SUdpCtlState read FErrorKind write '
      'FErrorKind;'
      '   {'#21457#36865#27169#24335' '#40664#35748#20026#28369#21160#31383#21475#26041#24335'}'
      '    property SendKind: SUDPSendKind read FSendKind write '
      'FSendKind;'
      '   {'#28369#21160#31383#21475#25968#37327' '#40664#35748#20026'3}'
      '    property FreeWindowsCount: Byte read FFreeWindowsCount '
      'write FFreeWindowsCount;'
      
        '//--------------------------------------------------------------' +
        '----------------'
      '// '#25552#20379#32473#22806#30028#30340#25509#21475' 2006-6-5 '#39532#25935#38026
      
        '//--------------------------------------------------------------' +
        '----------------'
      '    class procedure ClearOneData(IData: PSafeUdpData); '
      'overload; {'#37322#25918#19968#20010#21253'}'
      '    {'#23433#20840#21457#36865#25968#25454' '#33258#21160#20998#21253'}'
      
        '    class function IsUdpCtlData(IData: Pointer; ISize: Integer):' +
        ' '
      'boolean;'
      '    procedure SetCurrData(Idata: Pointer; ISize: Integer); {'#35774#32622
      #24403#21069#30340#25968#25454'}'
      '    procedure SafeSendBuff(IIp: string; IPort: Word; var IBuff; '
      'ISize: Cardinal;'
      '      Ilv: SheadLv); overload;'
      '    procedure SafeSendBuff(var IBuff; ISize: Cardinal; Ilv: '
      'SheadLv = SDoError);'
      '      overload;'
      '    {'#23433#20840#25511#21046#25968#25454#22788#29702#36807#31243' '#36820#22238#20540#20026#26159#21542#38656#35201#20132#32473
      #36923#36753#31243
      #24207#32487#32493#22788#29702'}'
      
        '    function CaseData(IData: Pointer; IPeerIP: string; IPeerPort' +
        ', '
      'IDataLen:'
      '      Integer): Boolean;'
      '    constructor Create(AOwner: TComponent); override;'
      '    destructor Destroy; override;'
      '  end;'
      ''
      'implementation'
      ''
      'uses IniFiles, windows, untfunctions, UntProctol, '
      'pmybasedebug;'
      ''
      
        'function OrderShort(List: TStringList; Index1, Index2: Integer):' +
        ' '
      'Integer; {'#25490#24207'}'
      'begin'
      '  try'
      '    Result := IfThen(StrToInt(List.Strings[Index1]) > '
      'StrToInt(List.Strings[Index2]), 1, -1);'
      '  except'
      '  end;'
      'end;'
      '{ TudpCtl }'
      ''
      'constructor TudpCtl.Create(AOwner: TComponent);'
      'begin'
      '  inherited Create(AOwner);'
      '  MaxReSendCount := 3;'
      '  WaiteTimeOut := 3000;'
      '  PeerSize := 1024; //512 + 256;'
      '  FPackedId := 0;'
      '  ReSendTime := 500;'
      '  FSendKind := SUSKFreeWindows;'
      '  FErrorKind := SUseErrorEvent;'
      '  FFreeWindowsCount := 10;'
      '  SendedList := THashedStringList.Create;'
      '  SendingList := THashedStringList.Create;'
      '  DataMixList := THashedStringList.Create;'
      '  SendMemory := TMemoryStream.Create;'
      '  CurrRealData := TMemoryStream.Create;'
      '  SenderThread := TUdpSenderThread.Create(False, Self);'
      '  OnDataReceived := OnData;'
      'end;'
      ''
      'destructor TudpCtl.Destroy;'
      'var'
      '  i: Integer;'
      'begin'
      '  SenderThread.FreeOnTerminate := True;'
      '  SenderThread.Terminate;'
      '  Sleep(20);'
      '  for i := 0 to DataMixList.Count - 1 do'
      '    DataMixList.Objects[i].Free;'

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