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#ifdef WIN32
typedef int socklen_t;
typedef int ssize_t;
#endif
#ifdef __LINUX__
typedef int SOCKET;
typedef unsigned char BYTE;
typedef unsigned long DWORD;
#define FALSE 0
#define SOCKET_ERROR (-1)
#endif
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windowsÏÂgetlasterror()/WSAGetLastError()
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windowsÏÂioctlsocket()
linuxÏÂfcntl() <fcntl.h>
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