此代码在Linux和WindowsXP上运行良好，但它总是无法在Windows764位和WindowsServer2008上添加多播成员。usesClasses,Sockets,{$IFDEFMSWINDOWS}Windows,Winsock,{$ELSE}BaseUnix,UnixType,{$ENDIF}Sysutils;typeTIP_mreq=packedrecordimr_multiaddr:in_addr;//IPmulticastaddressofgroupimr_interface:in_addr;//localIPaddressofinterfaceend;varAS