diff --git a/src/os/unix/freebsd/ngx_sendfile.c b/src/os/unix/freebsd/ngx_sendfile.c
index 1b60774..ff577db 100644
--- a/src/os/unix/freebsd/ngx_sendfile.c
+++ b/src/os/unix/freebsd/ngx_sendfile.c
@@ -1,5 +1,6 @@
 
 #include <ngx_config.h>
+#include <ngx_core.h>
 #include <ngx_types.h>
 #include <ngx_file.h>
 #include <ngx_socket.h>
@@ -14,12 +15,6 @@
        check sent if errno == EINTR then should return right sent.
 */
 
-/*
-  returns
-      0 done
-     -1 error
-*/
-
 #if (HAVE_FREEBSD_SENDFILE)
 
 int ngx_sendfile(ngx_socket_t s,
@@ -50,7 +45,7 @@
         if (err != NGX_EAGAIN && err != NGX_EINTR) {
             ngx_log_error(NGX_LOG_ERR, log, err,
                          "ngx_sendfile: sendfile failed");
-            return -1;
+            return NGX_ERROR;
 
         } else {
             ngx_log_error(NGX_LOG_INFO, log, err,
@@ -61,7 +56,7 @@
     ngx_log_debug(log, "ngx_sendfile: %d, @%qd %qd:%d" _
                   rc _ offset _ *sent _ nbytes);
 
-    return 0;
+    return NGX_OK;
 }
 
 #endif
diff --git a/src/os/unix/ngx_file.c b/src/os/unix/ngx_files.c
similarity index 80%
rename from src/os/unix/ngx_file.c
rename to src/os/unix/ngx_files.c
index 69b6975..a3dc36d 100644
--- a/src/os/unix/ngx_file.c
+++ b/src/os/unix/ngx_files.c
@@ -1,8 +1,19 @@
 
+#include <ngx_core.h>
+#include <ngx_file.h>
 
-ssize_t ngx_read_file(ngx_file_t file, char *buf, size_t size, off_t offset)
+ssize_t ngx_read_file(ngx_file_t *file, char *buf, size_t size, off_t offset)
 {
-    return pread(file->fd, buf, size, offset);
+    ssize_t n;
+
+    ngx_log_debug(file->log, "read: %x, %d, %qd" _ buf _ size _ offset);
+
+    n = pread(file->fd, buf, size, offset);
+
+    if (n == NGX_ERROR)
+        ngx_log_error(NGX_LOG_ERR, file->log, ngx_errno, "read() failed");
+
+    return n;
 }
 
 #if 0
diff --git a/src/os/unix/ngx_file.h b/src/os/unix/ngx_files.h
similarity index 82%
rename from src/os/unix/ngx_file.h
rename to src/os/unix/ngx_files.h
index 33ba6d8..9369db0 100644
--- a/src/os/unix/ngx_file.h
+++ b/src/os/unix/ngx_files.h
@@ -1,5 +1,5 @@
-#ifndef _NGX_FILE_H_INCLUDED_
-#define _NGX_FILE_H_INCLUDED_
+#ifndef _NGX_FILES_H_INCLUDED_
+#define _NGX_FILES_H_INCLUDED_
 
 
 #include <sys/types.h>
@@ -12,7 +12,6 @@
 #define ngx_open_file            open
 #define ngx_open_file_n          "open()"
 
-#define ngx_read_file            read
 #define ngx_read_file_n          "read()"
 
 #define NGX_FILE_RDONLY          O_RDONLY
@@ -29,4 +28,4 @@
 #define ngx_file_mtime(sb)       sb.st_mtime
 
 
-#endif /* _NGX_FILE_H_INCLUDED_ */
+#endif /* _NGX_FILES_H_INCLUDED_ */
diff --git a/src/os/unix/ngx_sendfile.h b/src/os/unix/ngx_sendfile.h
index 768e23c..c9a5923 100644
--- a/src/os/unix/ngx_sendfile.h
+++ b/src/os/unix/ngx_sendfile.h
@@ -3,7 +3,7 @@
 
 
 #include <ngx_types.h>
-#include <ngx_file.h>
+#include <ngx_files.h>
 #include <ngx_socket.h>
 #include <ngx_log.h>
 #include <ngx_sendv.h>
diff --git a/src/os/unix/ngx_sendv.c b/src/os/unix/ngx_sendv.c
index 22838c2..dec16a1 100644
--- a/src/os/unix/ngx_sendv.c
+++ b/src/os/unix/ngx_sendv.c
@@ -1,15 +1,18 @@
 
+#include <ngx_core.h>
 #include <ngx_types.h>
 #include <ngx_socket.h>
 #include <ngx_sendv.h>
 
 ssize_t ngx_sendv(ngx_socket_t s, ngx_iovec_t *iovec, int n, size_t *sent)
 {
-     ssize_t rc = writev(s, iovec, n);
+     ssize_t rc;
+
+     rc = writev(s, iovec, n);
 
      if (rc == -1)
-         return -1;
+         return NGX_ERROR;
 
      *sent = rc;
-     return 0;
+     return NGX_OK;
 }
diff --git a/src/os/unix/ngx_time.h b/src/os/unix/ngx_time.h
index f81ee4e..42bb716 100644
--- a/src/os/unix/ngx_time.h
+++ b/src/os/unix/ngx_time.h
@@ -4,6 +4,8 @@
 
 #include <ngx_config.h>
 
+typedef u_int          ngx_msec_t;
+
 typedef struct tm      ngx_tm_t;
 
 #define ngx_tm_sec     tm_sec
@@ -18,7 +20,7 @@
 
 void ngx_localtime(ngx_tm_t *tm);
 
-u_int ngx_msec(void);
+ngx_msec_t ngx_msec(void);
 
 
 #endif /* _NGX_TIME_H_INCLUDED_ */
diff --git a/src/os/win32/ngx_errno.h b/src/os/win32/ngx_errno.h
index 5197fdd..bd20ddf 100644
--- a/src/os/win32/ngx_errno.h
+++ b/src/os/win32/ngx_errno.h
@@ -6,12 +6,14 @@
 
 typedef DWORD             ngx_err_t;
 
-#define ngx_errno         GetLastError()
-#define ngx_socket_errno  WSAGetLastError()
+#define ngx_errno                  GetLastError()
+#define ngx_socket_errno           WSAGetLastError()
+#define ngx_set_socket_errno(err)  WSASetLastError(err)
 
 #define NGX_ENOENT        ERROR_FILE_NOT_FOUND
 #define NGX_EAGAIN        WSAEWOULDBLOCK
 #define NGX_EADDRINUSE    WSAEADDRINUSE
+#define NGX_ETIMEDOUT     WSAETIMEDOUT
 
 int ngx_strerror_r(ngx_err_t err, char *errstr, size_t size);
 
diff --git a/src/os/win32/ngx_files.c b/src/os/win32/ngx_files.c
new file mode 100644
index 0000000..8a91901
--- /dev/null
+++ b/src/os/win32/ngx_files.c
@@ -0,0 +1,18 @@
+
+#include <ngx_core.h>
+#include <ngx_types.h>
+#include <ngx_file.h>
+
+ssize_t ngx_read_file(ngx_file_t *file, char *buf, size_t size, off_t offset)
+{
+    size_t n;
+
+    if (ReadFile(file->fd, buf, size, &n, NULL) == 0) {
+        ngx_log_error(NGX_LOG_ERR, file->log, ngx_errno, "ReadFile() failed");
+        return NGX_ERROR;
+    }
+
+    return n;
+}
+
+
diff --git a/src/os/win32/ngx_file.h b/src/os/win32/ngx_files.h
similarity index 83%
rename from src/os/win32/ngx_file.h
rename to src/os/win32/ngx_files.h
index aaae84b..bddfe0d 100644
--- a/src/os/win32/ngx_file.h
+++ b/src/os/win32/ngx_files.h
@@ -1,5 +1,5 @@
-#ifndef _NGX_FILE_H_INCLUDED_
-#define _NGX_FILE_H_INCLUDED_
+#ifndef _NGX_FILES_H_INCLUDED_
+#define _NGX_FILES_H_INCLUDED_
 
 
 #include <ngx_config.h>
@@ -21,9 +21,9 @@
                        FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE,  \
                        NULL, OPEN_EXISTING, 0, NULL)
 
-#define ngx_open_file_n             "CreateFile"
+#define ngx_open_file_n             "CreateFile()"
 
-#define NGX_FILE_RDONLY          GENERIC_READ
+#define NGX_FILE_RDONLY             GENERIC_READ
 
 
 int ngx_file_type(char *filename, ngx_file_info_t *fi);
@@ -51,4 +51,7 @@
 */
 
 
-#endif /* _NGX_FILE_H_INCLUDED_ */
+#define ngx_read_file_n             "ReadFile()"
+
+
+#endif /* _NGX_FILES_H_INCLUDED_ */
diff --git a/src/os/win32/ngx_sendfile.c b/src/os/win32/ngx_sendfile.c
index c41b3b3..560f50f 100644
--- a/src/os/win32/ngx_sendfile.c
+++ b/src/os/win32/ngx_sendfile.c
@@ -1,6 +1,8 @@
 
 #include <ngx_config.h>
+#include <ngx_core.h>
 #include <ngx_types.h>
+#include <ngx_files.h>
 #include <ngx_socket.h>
 #include <ngx_errno.h>
 #include <ngx_log.h>
@@ -13,17 +15,11 @@
        TransmitPackets
 */
 
-/*
-  returns
-      0 done
-     -1 error
-*/
-
 #if (HAVE_WIN32_TRANSMITFILE)
 
 int ngx_sendfile(ngx_socket_t s,
                  ngx_iovec_t *headers, int hdr_cnt,
-                 ngx_file_t fd, off_t offset, size_t nbytes,
+                 ngx_fd_t fd, off_t offset, size_t nbytes,
                  ngx_iovec_t *trailers, int trl_cnt,
                  off_t *sent,
                  ngx_log_t *log)
@@ -65,15 +61,13 @@
     /* set sent */
 #if 0
     rc = WSAGetOverlappedResult(s, &olp, (unsigned long *) sent, 0, NULL);
+#else
+    *sent = olp.InternalHigh;
+    rc = 1;
 #endif
 
-#if 0
     ngx_log_debug(log, "ngx_sendfile: %d, @%I64d %I64d:%d" _
                   tfrc _ offset _ *sent _ nbytes);
-#else
-    ngx_log_debug(log, "ngx_sendfile: %d, @%I64d %d:%d" _
-                  tfrc _ offset _ olp.InternalHigh _ nbytes);
-#endif
 
     if (rc == 0) {
         err = ngx_socket_errno;
@@ -85,7 +79,7 @@
         if (tf_err != NGX_EAGAIN) {
             ngx_log_error(NGX_LOG_ERR, log, tf_err,
                           "ngx_sendfile: TransmitFile failed");
-            return -1;
+            return NGX_ERROR;
         }
 
         ngx_log_error(NGX_LOG_INFO, log, tf_err,
@@ -94,9 +88,9 @@
     }
 
     if (rc == 0)
-        return -1;
+        return NGX_ERROR;
 
-    return 0;
+    return NGX_OK;
 }
 
 #endif
diff --git a/src/os/win32/ngx_sendfile.h b/src/os/win32/ngx_sendfile.h
index 053db8e..a80750b 100644
--- a/src/os/win32/ngx_sendfile.h
+++ b/src/os/win32/ngx_sendfile.h
@@ -4,13 +4,14 @@
 
 #include <ngx_config.h>
 #include <ngx_types.h>
+#include <ngx_files.h>
 #include <ngx_socket.h>
 #include <ngx_log.h>
 #include <ngx_sendv.h>
 
 int ngx_sendfile(ngx_socket_t s,
                  ngx_iovec_t *headers, int hdr_cnt,
-                 ngx_file_t fd, off_t offset, size_t nbytes,
+                 ngx_fd_t fd, off_t offset, size_t nbytes,
                  ngx_iovec_t *trailers, int trl_cnt,
                  off_t *sent,
                  ngx_log_t *log);
diff --git a/src/os/win32/ngx_socket.h b/src/os/win32/ngx_socket.h
index 2708b5f..95e427c 100644
--- a/src/os/win32/ngx_socket.h
+++ b/src/os/win32/ngx_socket.h
@@ -5,7 +5,10 @@
 #include <ngx_config.h>
 #include <ngx_log.h>
 
+#define INET_ADDRSTRLEN     16
+
 typedef SOCKET  ngx_socket_t;
+typedef int     socklen_t;
 
 void ngx_init_sockets(ngx_log_t *log);
 
@@ -13,11 +16,12 @@
             WSASocket(af, type, proto, NULL, 0, flags)
 #define ngx_socket_n        "WSASocket()"
 
-int ngx_nonblocking_n(s);
+int ngx_nonblocking(ngx_socket_t s);
 #define ngx_nonblocking_n   "ioctlsocket(FIONBIO)"
 
 #define ngx_close_socket    closesocket
 #define ngx_close_socket_n  "closesocket()"
 
 
+
 #endif /* _NGX_SOCKET_H_INCLUDED_ */
diff --git a/src/os/win32/ngx_time.h b/src/os/win32/ngx_time.h
index be93244..a810c70 100644
--- a/src/os/win32/ngx_time.h
+++ b/src/os/win32/ngx_time.h
@@ -4,6 +4,8 @@
 
 #include <windows.h>
 
+typedef unsigned int   ngx_msec_t;
+
 typedef SYSTEMTIME     ngx_tm_t;
 typedef FILETIME       ngx_mtime_t;
 
diff --git a/src/os/win32/ngx_types.h b/src/os/win32/ngx_types.h
index fdf6ccd..7521633 100644
--- a/src/os/win32/ngx_types.h
+++ b/src/os/win32/ngx_types.h
@@ -5,6 +5,7 @@
 #include <ngx_config.h>
 
 
+typedef int               ssize_t;
 typedef long              time_t;