SOCKET缓存

SOCKET缓存

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/// <author>cxg 2020-7-13</author> /// socket缓存(线程安全)   unit sockBuf;   interface   uses   System.SyncObjs, Net.SocketAPI, Net.CrossSocket.Base, Net.CrossSocket,   System.Generics.Collections, System.Classes, System.SysUtils;   const   bufsize = 32768; //32K   type   TSockBuf = class   private     bufs: TDictionary<ICrossConnection, TMemoryStream>;     fCS: TCriticalSection;   public     constructor Create;     destructor Destroy; override;     function process(const Connection: ICrossConnection; const Buf: Pointer; const Len: Integer): TMemoryStream;     procedure remove(const Connection: ICrossConnection);   end;   implementation   { TSockBuf }   constructor TSockBuf.Create; begin   bufs := TDictionary<ICrossConnection, TMemoryStream>.Create;   fCS := TCriticalSection.Create; end;   destructor TSockBuf.Destroy; begin   for var v: TMemoryStream in bufs.Values do     v.Free;   FreeAndNil(bufs);   FreeAndNil(fCS);   inherited; end;   function TSockBuf.process(const Connection: ICrossConnection; const Buf: Pointer; const Len: Integer): TMemoryStream; begin   fCS.Enter;   if not bufs.ContainsKey(Connection) then    begin     Result := TMemoryStream.Create;     bufs.Add(Connection, Result);   end   else         bufs.TryGetValue(Connection, Result);   fCS.Leave;   Result.Write(Buf^, Len); end;   procedure TSockBuf.remove(const Connection: ICrossConnection); begin   fCS.Enter;   bufs[Connection].Free;   bufs.Remove(Connection);   fCS.Leave; end;   end.