diff -pudN e:\wine\dlls\winhttp/net.c e:\reactos\dll\win32\winhttp/net.c
--- e:\wine\dlls\winhttp/net.c	2016-11-16 17:36:37 +0100
+++ e:\reactos\dll\win32\winhttp/net.c	2016-10-13 11:15:39 +0100
@@ -50,6 +50,7 @@ static CRITICAL_SECTION cs_gethostbyname
 #endif
 
 /* translate a unix error code into a winsock error code */
+#ifndef __REACTOS__
 static int sock_get_error( int err )
 {
 #if !defined(__MINGW32__) && !defined (_MSC_VER)
@@ -115,6 +116,15 @@ static int sock_get_error( int err )
 #endif
     return err;
 }
+#else
+#define sock_get_error(x) WSAGetLastError()
+
+static inline int unix_ioctl(int filedes, long request, void *arg)
+{
+    return ioctlsocket(filedes, request, arg);
+}
+#define ioctlsocket unix_ioctl
+#endif
 
 static int sock_send(int fd, const void *msg, size_t len, int flags)
 {
@@ -266,6 +276,28 @@ static BOOL ensure_cred_handle(void)
     return ret;
 }
 
+#ifdef __REACTOS__
+static BOOL winsock_initialized = FALSE;
+BOOL netconn_init_winsock()
+{
+    WSADATA wsaData;
+    int error;
+    if (!winsock_initialized)
+    {
+        error = WSAStartup(MAKEWORD(1, 1), &wsaData);
+        if (error)
+        {
+            ERR("WSAStartup failed: %d\n", error);
+            return FALSE;
+        }
+        else
+            winsock_initialized = TRUE;
+    }
+    return winsock_initialized;
+}
+
+#endif
+
 BOOL netconn_init( netconn_t *conn )
 {
     memset(conn, 0, sizeof(*conn));
@@ -281,6 +313,10 @@ void netconn_unload( void )
 #ifndef HAVE_GETADDRINFO
     DeleteCriticalSection(&cs_gethostbyname);
 #endif
+#ifdef __REACTOS__
+    if(winsock_initialized)
+        WSACleanup();
+#endif
 }
 
 BOOL netconn_connected( netconn_t *conn )
@@ -343,11 +379,25 @@ BOOL netconn_connect( netconn_t *conn, c
         res = sock_get_error( errno );
         if (res == WSAEWOULDBLOCK || res == WSAEINPROGRESS)
         {
+#ifdef __REACTOS__
+            /* ReactOS: use select instead of poll */
+            fd_set outfd;
+            struct timeval tv;
+
+            FD_ZERO(&outfd);
+            FD_SET(conn->socket, &outfd);
+
+            tv.tv_sec = 0;
+            tv.tv_usec = timeout * 1000;
+
+            if (select( 0, NULL, &outfd, NULL, &tv ) > 0)
+#else
             struct pollfd pfd;
 
             pfd.fd = conn->socket;
             pfd.events = POLLOUT;
             if (poll( &pfd, 1, timeout ) > 0)
+#endif
                 ret = TRUE;
             else
                 res = sock_get_error( errno );
diff -pudN e:\wine\dlls\winhttp/request.c e:\reactos\dll\win32\winhttp/request.c
--- e:\wine\dlls\winhttp/request.c	2016-11-16 17:36:37 +0100
+++ e:\reactos\dll\win32\winhttp/request.c	2016-02-27 16:08:59 +0100
@@ -1258,6 +1258,7 @@ BOOL WINAPI WinHttpSendRequest( HINTERNE
     return ret;
 }
 
+#undef ARRAYSIZE
 #define ARRAYSIZE(array) (sizeof(array) / sizeof((array)[0]))
 
 static const WCHAR basicW[]     = {'B','a','s','i','c',0};
@@ -2758,8 +2759,8 @@ static void free_request( struct winhttp
     CloseHandle( request->thread );
     CloseHandle( request->wait );
     CloseHandle( request->cancel );
-    heap_free( request->proxy.lpszProxy );
-    heap_free( request->proxy.lpszProxyBypass );
+    heap_free( (WCHAR *)request->proxy.lpszProxy );
+    heap_free( (WCHAR *)request->proxy.lpszProxyBypass );
     heap_free( request->buffer );
     heap_free( request->verb );
     VariantClear( &request->data );
@@ -3005,16 +3006,16 @@ static HRESULT WINAPI winhttp_request_Se
     {
     case HTTPREQUEST_PROXYSETTING_DEFAULT:
         request->proxy.dwAccessType = WINHTTP_ACCESS_TYPE_DEFAULT_PROXY;
-        heap_free( request->proxy.lpszProxy );
-        heap_free( request->proxy.lpszProxyBypass );
+        heap_free( (WCHAR *)request->proxy.lpszProxy );
+        heap_free( (WCHAR *)request->proxy.lpszProxyBypass );
         request->proxy.lpszProxy = NULL;
         request->proxy.lpszProxyBypass = NULL;
         break;
 
     case HTTPREQUEST_PROXYSETTING_DIRECT:
         request->proxy.dwAccessType = WINHTTP_ACCESS_TYPE_NO_PROXY;
-        heap_free( request->proxy.lpszProxy );
-        heap_free( request->proxy.lpszProxyBypass );
+        heap_free( (WCHAR *)request->proxy.lpszProxy );
+        heap_free( (WCHAR *)request->proxy.lpszProxyBypass );
         request->proxy.lpszProxy = NULL;
         request->proxy.lpszProxyBypass = NULL;
         break;
@@ -3023,12 +3024,12 @@ static HRESULT WINAPI winhttp_request_Se
         request->proxy.dwAccessType = WINHTTP_ACCESS_TYPE_NAMED_PROXY;
         if (V_VT( &proxy_server ) == VT_BSTR)
         {
-            heap_free( request->proxy.lpszProxy );
+            heap_free( (WCHAR *)request->proxy.lpszProxy );
             request->proxy.lpszProxy = strdupW( V_BSTR( &proxy_server ) );
         }
         if (V_VT( &bypass_list ) == VT_BSTR)
         {
-            heap_free( request->proxy.lpszProxyBypass );
+            heap_free( (WCHAR *)request->proxy.lpszProxyBypass );
             request->proxy.lpszProxyBypass = strdupW( V_BSTR( &bypass_list ) );
         }
         break;
diff -pudN e:\wine\dlls\winhttp/session.c e:\reactos\dll\win32\winhttp/session.c
--- e:\wine\dlls\winhttp/session.c	2016-11-16 17:36:37 +0100
+++ e:\reactos\dll\win32\winhttp/session.c	2016-11-17 00:14:49 +0100
@@ -197,6 +197,9 @@ static const object_vtbl_t session_vtbl 
     session_set_option
 };
 
+#ifdef __REACTOS__
+BOOL netconn_init_winsock();
+#endif /* __REACTOS__ */
 /***********************************************************************
  *          WinHttpOpen (winhttp.@)
  */
@@ -204,6 +207,9 @@ HINTERNET WINAPI WinHttpOpen( LPCWSTR ag
 {
     session_t *session;
     HINTERNET handle = NULL;
+#ifdef __REACTOS__
+    if (!netconn_init_winsock()) return NULL;
+#endif
 
     TRACE("%s, %u, %s, %s, 0x%08x\n", debugstr_w(agent), access, debugstr_w(proxy), debugstr_w(bypass), flags);
 
@@ -230,14 +236,14 @@ HINTERNET WINAPI WinHttpOpen( LPCWSTR ag
         session->access = info.dwAccessType;
         if (info.lpszProxy && !(session->proxy_server = strdupW( info.lpszProxy )))
         {
-            GlobalFree( info.lpszProxy );
-            GlobalFree( info.lpszProxyBypass );
+            GlobalFree( (LPWSTR)info.lpszProxy );
+            GlobalFree( (LPWSTR)info.lpszProxyBypass );
             goto end;
         }
         if (info.lpszProxyBypass && !(session->proxy_bypass = strdupW( info.lpszProxyBypass )))
         {
-            GlobalFree( info.lpszProxy );
-            GlobalFree( info.lpszProxyBypass );
+            GlobalFree( (LPWSTR)info.lpszProxy );
+            GlobalFree( (LPWSTR)info.lpszProxyBypass );
             goto end;
         }
     }
@@ -610,7 +616,7 @@ static WCHAR *blob_to_str( DWORD encodin
 
 static BOOL convert_sockaddr( const struct sockaddr *addr, SOCKADDR_STORAGE *addr_storage )
 {
-#ifndef __MINGW32__
+#if !defined(__MINGW32__) && !defined(_MSC_VER)
     switch (addr->sa_family)
     {
     case AF_INET: