you can do not use this SSL, http://www.slproweb.com/products/Win32OpenSSL.html .
you can download OPENSSL src and build yourself, and then do flow :
modify dtls1.h file:
#ifdef OPENSSL_SYS_WIN32
/* Needed for struct timeval for poco netSSL, change winsock.h to winsock2.h*/
//#include <winsock.h> becase 同时包含了winsock.h和winsock2.h导致timeval重定义
#ifdef POCO_DLL
#include <winsock2.h>
#else
#include <winsock.h>
#endif
hope poco modify NETSSL howtobuild.txt.





