1 | unit UNetworkServer;
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2 |
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3 | interface
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4 |
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5 | uses
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6 | Classes, SysUtils{$IFDEF UNIX}, Generics.Collections, fpAsync, fpsock,
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7 | fphttpclient{$ENDIF}, Protocol;
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8 |
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9 | {$IFDEF UNIX}
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10 | type
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11 | TNetworkServer = class;
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12 | TNetworkServerPlayer = class;
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13 |
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14 | { TTCPServerThread }
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15 |
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16 | TTCPServerThread = class(TThread)
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17 | TCPServer: TTCPServer;
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18 | procedure Execute; override;
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19 | end;
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20 |
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21 | { TNetworkServerConnection }
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22 |
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23 | TNetworkServerConnection = class
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24 | private
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25 | DataAvailableHandle: Pointer;
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26 | ReceiveBuffer: TMemoryStream;
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27 | procedure DisconnectExecute(Sender: TObject);
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28 | procedure DataAvailableSync;
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29 | procedure DataAvailableExecute(Sender: TObject);
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30 | public
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31 | NetworkServer: TNetworkServer;
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32 | Socket: TSocketStream;
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33 | ServerEventLoop: TEventLoop;
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34 | Player: TNetworkServerPlayer;
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35 | Connected: Boolean;
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36 | procedure Run;
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37 | constructor Create;
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38 | destructor Destroy; override;
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39 | end;
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40 |
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41 | { TNetworkServerPlayer }
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42 |
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43 | TNetworkServerPlayer = class
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44 | private
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45 | Buffer: TMemoryStream;
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46 | public
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47 | NetworkServer: TNetworkServer;
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48 | Id: Integer;
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49 | Connection: TNetworkServerConnection;
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50 | constructor Create;
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51 | destructor Destroy; override;
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52 | procedure Client(Command: TCommand; Player: Integer; var Data);
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53 | function Server(Command: TCommand; Player, Subject: Integer; var Data): Integer;
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54 | end;
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55 |
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56 | { TNetworkServerPlayers }
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57 |
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58 | TNetworkServerPlayers = class(TObjectList<TNetworkServerPlayer>)
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59 | function SearchById(Id: Integer): TNetworkServerPlayer;
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60 | end;
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61 |
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62 | { TNetworkServer }
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63 |
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64 | TNetworkServer = class
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65 | private
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66 | Players: TNetworkServerPlayers;
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67 | Connections: TObjectList<TNetworkServerConnection>;
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68 | TCPServerThread: TTCPServerThread;
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69 | ServerEventLoop: TEventLoop;
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70 | procedure ConnectExecute(Sender: TConnectionBasedSocket; AStream: TSocketStream);
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71 | procedure Client(Command: TCommand; Player: integer; var Data);
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72 | public
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73 | TCPServer: TTCPServer;
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74 | Server: TServerCall;
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75 | constructor Create;
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76 | destructor Destroy; override;
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77 | end;
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78 |
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79 | var
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80 | NetworkServer: TNetworkServer;
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81 | {$ENDIF}
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82 |
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83 | procedure Client(Command, Player: integer; var Data); stdcall;
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84 |
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85 |
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86 | implementation
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87 |
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88 | {$IFDEF UNIX}
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89 | uses
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90 | Global, UNetworkCommon;
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91 | {$ENDIF}
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92 |
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93 | procedure Client(Command, Player: integer; var Data);
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94 | begin
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95 | {$IFDEF UNIX}
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96 | if not Assigned(NetworkServer) then begin
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97 | NetworkServer := TNetworkServer.Create;
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98 | end;
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99 | case TCommand(Command) of
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100 | cmReleaseModule: begin
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101 | FreeAndNil(NetworkServer);
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102 | end;
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103 | end;
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104 | NetworkServer.Client(TCommand(Command), Player, Data);
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105 | {$ENDIF}
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106 | end;
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107 |
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108 | {$IFDEF UNIX}
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109 |
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110 | { TNetworkServerPlayers }
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111 |
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112 | function TNetworkServerPlayers.SearchById(Id: Integer): TNetworkServerPlayer;
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113 | var
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114 | I: Integer;
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115 | begin
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116 | I := 0;
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117 | while (I < Count) and (Items[I].Id <> Id) do Inc(I);
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118 | if I < Count then Result := Items[I]
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119 | else Result := nil;
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120 | end;
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121 |
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122 | { TNetworkServerPlayer }
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123 |
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124 | constructor TNetworkServerPlayer.Create;
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125 | begin
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126 | Buffer := TMemoryStream.Create;
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127 | end;
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128 |
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129 | destructor TNetworkServerPlayer.Destroy;
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130 | begin
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131 | if Assigned(Connection) then Connection.Player := nil;
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132 | FreeAndNil(Buffer);
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133 | inherited;
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134 | end;
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135 |
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136 | procedure TNetworkServerPlayer.Client(Command: TCommand; Player: Integer; var Data);
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137 | begin
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138 | if Assigned(Connection) then begin
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139 | with Connection.Socket do begin
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140 | if Buffer.Size > 0 then begin
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141 | Buffer.Position := 0;
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142 | CopyFrom(Buffer, Buffer.Size);
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143 | Buffer.Clear;
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144 | end;
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145 | WriteDWord(DWord(Command));
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146 | WriteDWord(DWord(Player));
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147 | if GetCommandDataSize(Command) > 0 then
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148 | Write(Data, GetCommandDataSize(Command));
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149 | end;
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150 | end else begin
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151 | with Buffer do begin
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152 | WriteDWord(DWord(Command));
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153 | WriteDWord(DWord(Player));
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154 | if GetCommandDataSize(Command) > 0 then
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155 | Write(Data, GetCommandDataSize(Command));
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156 | end;
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157 | end;
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158 | end;
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159 |
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160 | function TNetworkServerPlayer.Server(Command: TCommand; Player,
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161 | Subject: Integer; var Data): Integer;
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162 | begin
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163 | NetworkServer.Server(Integer(Command), Player, Subject, Data);
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164 | end;
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165 |
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166 | { TNetworkServerConnection }
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167 |
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168 | procedure TNetworkServerConnection.DisconnectExecute(Sender: TObject);
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169 | begin
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170 | {Connected := False;
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171 | if Assigned(Player) then begin
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172 | Player.Connection := nil;
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173 | Player := nil;
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174 | end;
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175 | }
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176 | end;
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177 |
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178 | procedure TNetworkServerConnection.DataAvailableSync;
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179 | var
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180 | Data: array of Byte;
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181 | ReadCount: Integer;
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182 | PlayerIndex: Integer;
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183 | Subject: Integer;
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184 | Command: TCommand;
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185 | begin
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186 | StreamAppend(ReceiveBuffer, Socket);
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187 | while ReceiveBuffer.Size >= 3 * SizeOf(Integer) do begin
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188 | ReceiveBuffer.Position := 0;
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189 |
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190 | Command := TCommand(ReceiveBuffer.ReadDWord);
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191 | PlayerIndex := ReceiveBuffer.ReadDWord;
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192 | Subject := ReceiveBuffer.ReadDWord;
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193 | SetLength(Data, GetCommandDataSize(TCommand(Command)));
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194 | if Length(Data) > 0 then begin
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195 | ReadCount := ReceiveBuffer.Read(Data[0], Length(Data));
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196 | SetLength(Data, ReadCount);
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197 | end;
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198 | if Assigned(Player) then begin
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199 | if Length(Data) > 0 then
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200 | Player.Server(Command, PlayerIndex, Subject, Data[0])
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201 | else Player.Server(Command, PlayerIndex, Subject, nil^);
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202 | end;
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203 | StreamRemoveRead(ReceiveBuffer);
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204 | end;
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205 | end;
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206 |
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207 | procedure TNetworkServerConnection.DataAvailableExecute(Sender: TObject);
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208 | begin
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209 | NetworkServer.TCPServerThread.Synchronize(NetworkServer.TCPServerThread, DataAvailableSync);
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210 | Sleep(10); // TODO: How to reset this event
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211 | end;
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212 |
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213 | procedure TNetworkServerConnection.Run;
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214 | begin
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215 | Socket.OnDisconnect := DisconnectExecute;
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216 | DataAvailableHandle := NetworkServer.TCPServer.EventLoop.SetDataAvailableNotify(Socket.Handle, DataAvailableExecute, nil);
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217 | Connected := True;
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218 | end;
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219 |
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220 | constructor TNetworkServerConnection.Create;
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221 | begin
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222 | ReceiveBuffer := TMemoryStream.Create;
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223 | end;
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224 |
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225 | destructor TNetworkServerConnection.Destroy;
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226 | begin
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227 | if Assigned(Player) then Player.Connection := nil;
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228 | if Assigned(DataAvailableHandle) then
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229 | NetworkServer.TCPServer.EventLoop.ClearDataAvailableNotify(DataAvailableHandle);
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230 | FreeAndNil(Socket);
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231 | NetworkServer.Connections.Remove(Self);
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232 | FreeAndNil(ReceiveBuffer);
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233 | inherited;
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234 | end;
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235 |
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236 | { TNetworkServer }
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237 |
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238 | procedure TNetworkServer.ConnectExecute(Sender: TConnectionBasedSocket;
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239 | AStream: TSocketStream);
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240 | var
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241 | NewConnection: TNetworkServerConnection;
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242 | Player: TNetworkServerPlayer;
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243 | I: Integer;
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244 | InitModuleData: TInitModuleData;
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245 | begin
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246 | NewConnection := TNetworkServerConnection.Create;
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247 | NewConnection.Socket := AStream;
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248 | NewConnection.NetworkServer := Self;
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249 | Connections.Add(NewConnection);
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250 | NewConnection.Run;
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251 |
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252 | // Search for player without connection
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253 | Player := nil;
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254 | for I := 0 to Players.Count - 1 do begin
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255 | if not Assigned(Players[I].Connection) then begin
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256 | Player := Players[I];
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257 | Break;
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258 | end;
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259 | end;
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260 | if Assigned(Player) then begin
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261 | NewConnection.Player := Player;
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262 | Player.Connection := NewConnection;
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263 | Player.Client(cmInitModule, Player.Id, InitModuleData);
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264 | end else AStream.Free;
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265 | end;
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266 |
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267 | procedure TNetworkServer.Client(Command: TCommand; Player: integer; var Data);
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268 | var
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269 | Cmd: TCommand;
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270 | NewPlayer: TNetworkServerPlayer;
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271 | I: Integer;
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272 | ServerPlayer: TNetworkServerPlayer;
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273 | begin
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274 | if Player <> -1 then begin
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275 | NewPlayer := TNetworkServerPlayer.Create;
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276 | NewPlayer.Id := Player;
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277 | NewPlayer.NetworkServer := Self;
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278 | Players.Add(NewPlayer);
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279 | end;
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280 |
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281 | Cmd := TCommand(Command);
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282 | case Cmd of
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283 | cmInitModule: begin
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284 | TInitModuleData(Data).Flags := aiThreaded;
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285 | Server := TInitModuleData(Data).Server;
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286 | end;
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287 | else begin
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288 | if Player = -1 then begin
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289 | // Send to all
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290 | for I := 0 to NetworkServer.Players.Count - 1 do
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291 | NetworkServer.Players[I].Client(Cmd, Player, Data);
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292 | end else begin
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293 | ServerPlayer := NetworkServer.Players.SearchById(Player);
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294 | if Assigned(ServerPlayer) then
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295 | ServerPlayer.Client(Cmd, Player, Data);
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296 | end;
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297 | end;
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298 | end;
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299 | end;
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300 |
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301 | constructor TNetworkServer.Create;
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302 | begin
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303 | Players := TNetworkServerPlayers.Create;
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304 | ServerEventLoop := TEventLoop.Create;
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305 | Connections := TObjectList<TNetworkServerConnection>.Create;
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306 | TCPServer := TTCPServer.Create(nil);
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307 | with TCPServer do begin
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308 | EventLoop := ServerEventLoop;
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309 | Port := CevoNetworkPort;
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310 | OnConnect := ConnectExecute;
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311 | Active := True;
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312 | end;
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313 | TCPServerThread := TTCPServerThread.Create(True);
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314 | TCPServerThread.TCPServer := TCPServer;
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315 | TCPServerThread.Start;
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316 | end;
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317 |
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318 | destructor TNetworkServer.Destroy;
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319 | begin
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320 | ServerEventLoop.Break;
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321 | FreeAndNil(TCPServerThread);
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322 | FreeAndNil(ServerEventLoop);
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323 | FreeAndNil(TCPServer);
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324 | FreeAndNil(Connections);
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325 | FreeAndNil(Players);
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326 | inherited;
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327 | end;
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328 |
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329 | { TTCPServerThread }
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330 |
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331 | procedure TTCPServerThread.Execute;
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332 | begin
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333 | TCPServer.EventLoop.Run;
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334 | end;
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335 |
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336 | {$ENDIF}
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337 |
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338 | end.
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339 |
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