@@ -19,10 +19,51 @@
 @class OFString;
 @class OFArray;
 @class OFMutableArray;
 
 #define OF_BACKTRACE_SIZE 32
+
+#if defined(_WIN32) && defined(OF_HAVE_SOCKETS)
+# define EADDRINUSE WSAEADDRINUSE
+# define EADDRNOTAVAIL WSAEADDRNOTAVAIL
+# define EAFNOSUPPORT WSAEAFNOSUPPORT
+# define EALREADY WSAEALREADY
+# define ECONNABORTED WSAECONNABORTED
+# define ECONNABORTED WSAECONNABORTED
+# define ECONNREFUSED WSAECONNREFUSED
+# define ECONNRESET WSAECONNRESET
+# define ECONNRESET WSAECONNRESET
+# define EDESTADDRREQ WSAEDESTADDRREQ
+# define EDQUOT WSAEDQUOT
+# define EHOSTDOWN WSAEHOSTDOWN
+# define EHOSTUNREACH WSAEHOSTUNREACH
+# define EINPROGRESS WSAEINPROGRESS
+# define EISCONN WSAEISCONN
+# define ELOOP WSAELOOP
+# define EMSGSIZE WSAEMSGSIZE
+# define ENETDOWN WSAENETDOWN
+# define ENETRESET WSAENETRESET
+# define ENETUNREACH WSAENETUNREACH
+# define ENOBUFS WSAENOBUFS
+# define ENOPROTOOPT WSAENOPROTOOPT
+# define ENOTCONN WSAENOTCONN
+# define ENOTSOCK WSAENOTSOCK
+# define EOPNOTSUPP WSAEOPNOTSUPP
+# define EPFNOSUPPORT WSAEPFNOSUPPORT
+# define EPROCLIM WSAEPROCLIM
+# define EPROTONOSUPPORT WSAEPROTONOSUPPORT
+# define EPROTOTYPE WSAEPROTOTYPE
+# define EREMOTE WSAEREMOTE
+# define ESHUTDOWN WSAESHUTDOWN
+# define ESOCKTNOSUPPORT WSAESOCKTNOSUPPORT
+# define ESTALE WSAESTALE
+# define ETIMEDOUT WSAETIMEDOUT
+# define ETOOMANYREFS WSAETOOMANYREFS
+# define EUSERS WSAEUSERS
+# define EWOULDBLOCK WSAEWOULDBLOCK
+extern int of_wsaerr_to_errno(int);
+#endif
 
 /*!
  * @brief The base class for all exceptions in ObjFW
  *
  * The OFException class is the base class for all exceptions in ObjFW, except