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SynaSockUtils.pas
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SynaSockUtils.pas
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{==============================================================================|
| Project : OnLine Data Process Component |
|==============================================================================|
| Copyright (c)2010-2011, Yang JiXian |
| All rights reserved. |
| |
| Redistribution and use in source and binary forms, with or without |
| modification, are permitted provided that the following conditions are met: |
| |
| Redistributions of source code must retain the above copyright notice, this |
| list of conditions and the following disclaimer. |
| |
| Redistributions in binary form must reproduce the above copyright notice, |
| this list of conditions and the following disclaimer in the documentation |
| and/or other materials provided with the distribution. |
| |
| Neither the name of Yang JiXian nor the names of its contributors may |
| be used to endorse or promote products derived from this software without |
| specific prior written permission. |
| |
| THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR |
| ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH |
| DAMAGE. |
|==============================================================================|
| The Initial Developer of the Original Code is Yang JiXian (PRC). |
| Portions created by Yang JiXian are Copyright (c)1999-2011. |
| All Rights Reserved. |
|==============================================================================|
| Contributor(s): |
|==============================================================================}
unit SynaSockUtils;
{$IFDEF FPC}
{$MODE DELPHI}
{$ENDIF}
interface
uses
Classes, SyncObjs, SysUtils, {$IFNDEF LINUX}Windows, {$ENDIF}
Blcksock, Synsock, Synautil, {$IFDEF UNIX}{$IFDEF UseCThreads}
cthreads, cmem, {$ENDIF}{$ENDIF}//{$IFDEF FPC}LclIntf, {$ENDIF}
DataProcUtils, SynaIP, SSL_OpenSSL;
type
TCustomSocket = class(TTCPBlockSocket)
public
DisConnected: Boolean;
procedure Init;
function SendOnlineData(DataStr: AnsiString): boolean;
function RecvOnlineData(FTimeOut: integer): AnsiString;
end;
JobContent = (doNone, doConn, doDisconn, doSend, doRecv, doWaitData);
TJobs = record
Job: JobContent;
Data: AnsiString;
end;
implementation
{==============================================================================}
procedure TCustomSocket.Init;
begin
DisConnected := False;
end;
function TCustomSocket.SendOnlineData(DataStr: AnsiString): boolean;
var
i, DLen, BLen, XLen: integer;
TempData: AnsiString;
begin
DLen := Length(DataStr);
Result := False;
if DLen > 8102 then
begin
XLen := DLen mod 8102;
BLen := DLen div 8102;
for i := 0 to BLen - 1 do
begin
if DisConnected then
Exit;
Sleep(6);
SetLength(TempData, 8102);
move(DataStr[i * 8102 + 1], TempData[1], 8102);
SendString(TempData);
if LastError <> 0 then
Exit;
end;
if XLen > 0 then
begin
SetLength(TempData, XLen);
move(DataStr[BLen * 8102 + 1], TempData[1], XLen);
SendString(TempData);
end;
end
else
SendString(DataStr);
Result := LastError = 0;
end;
//It can work in hard enviroment and can receive the other message sent.
function TCustomSocket.RecvOnlineData(FTimeOut: integer): AnsiString;
var
t, s: AnsiString;
RPTTimeOut, FBias, i: integer;
ti: longword;
begin
try
s := RecvPacket(FTimeOut);
RPTTimeOut := 36;
i := 0;
repeat
ti := GetTick;
Sleep(1);
t := RecvPacket(RPTTimeOut);
if RPTTimeOut < FTimeOut then
if LastError = WSAETIMEDOUT then
begin
i := i + 1;
FBias := 96;
if i = 2 then
FBias := 160;
if i = 3 then
FBias := 1600;
if i = 4 then
begin
FBias := 3600;
i := 0;
end;
Sleep(6);
RPTTimeOut := FBias + integer(TickDelta(ti, GetTick));
ResetLastError;
end;
s := s + t;
until (t = '') or DisConnected;
Result := s;
except
Result := '';
end;
end;
end.