diff --git a/src/os/windows/vm/jvm_windows.h b/src/os/windows/vm/jvm_windows.h
index a45f86c2e772a19f86aa6922101cd2dd5f20a55b..910398215589f08a05137bc8058a0446c87b841a 100644
--- a/src/os/windows/vm/jvm_windows.h
+++ b/src/os/windows/vm/jvm_windows.h
@@ -59,7 +59,7 @@ typedef struct _MODULEINFO {
 
 #include <Tlhelp32.h>
 
-typedef unsigned int socklen_t;
+typedef int socklen_t;
 
 // #include "jni.h"
 
diff --git a/src/os/windows/vm/os_windows.cpp b/src/os/windows/vm/os_windows.cpp
index de38c6c12daa7c0ff8e1f989f6379f75e2c1a7ce..c607905e8364fbf9eca24c87900c64ae09b6a3f9 100644
--- a/src/os/windows/vm/os_windows.cpp
+++ b/src/os/windows/vm/os_windows.cpp
@@ -4820,99 +4820,92 @@ struct hostent* os::get_host_by_name(char* name) {
   return (struct hostent*)os::WinSock2Dll::gethostbyname(name);
 }
 
-
 int os::socket_close(int fd) {
-  ShouldNotReachHere();
-  return 0;
+  return ::closesocket(fd);
 }
 
 int os::socket_available(int fd, jint *pbytes) {
-  ShouldNotReachHere();
-  return 0;
+  int ret = ::ioctlsocket(fd, FIONREAD, (u_long*)pbytes);
+  return (ret < 0) ? 0 : 1;
 }
 
 int os::socket(int domain, int type, int protocol) {
-  ShouldNotReachHere();
-  return 0;
+  return ::socket(domain, type, protocol);
 }
 
 int os::listen(int fd, int count) {
-  ShouldNotReachHere();
-  return 0;
+  return ::listen(fd, count);
 }
 
 int os::connect(int fd, struct sockaddr* him, socklen_t len) {
-  ShouldNotReachHere();
-  return 0;
+  return ::connect(fd, him, len);
 }
 
 int os::accept(int fd, struct sockaddr* him, socklen_t* len) {
-  ShouldNotReachHere();
-  return 0;
+  return ::accept(fd, him, len);
 }
 
 int os::sendto(int fd, char* buf, size_t len, uint flags,
                struct sockaddr* to, socklen_t tolen) {
-  ShouldNotReachHere();
-  return 0;
+
+  return ::sendto(fd, buf, (int)len, flags, to, tolen);
 }
 
 int os::recvfrom(int fd, char *buf, size_t nBytes, uint flags,
                  sockaddr* from, socklen_t* fromlen) {
-  ShouldNotReachHere();
-  return 0;
+
+  return ::recvfrom(fd, buf, (int)nBytes, flags, from, fromlen);
 }
 
 int os::recv(int fd, char* buf, size_t nBytes, uint flags) {
-  ShouldNotReachHere();
-  return 0;
+  return ::recv(fd, buf, (int)nBytes, flags);
 }
 
 int os::send(int fd, char* buf, size_t nBytes, uint flags) {
-  ShouldNotReachHere();
-  return 0;
+  return ::send(fd, buf, (int)nBytes, flags);
 }
 
 int os::raw_send(int fd, char* buf, size_t nBytes, uint flags) {
-  ShouldNotReachHere();
-  return 0;
+  return ::send(fd, buf, (int)nBytes, flags);
 }
 
 int os::timeout(int fd, long timeout) {
-  ShouldNotReachHere();
-  return 0;
+  fd_set tbl;
+  struct timeval t;
+
+  t.tv_sec  = timeout / 1000;
+  t.tv_usec = (timeout % 1000) * 1000;
+
+  tbl.fd_count    = 1;
+  tbl.fd_array[0] = fd;
+
+  return ::select(1, &tbl, 0, 0, &t);
 }
 
 int os::get_host_name(char* name, int namelen) {
-  ShouldNotReachHere();
-  return 0;
+  return ::gethostname(name, namelen);
 }
 
 int os::socket_shutdown(int fd, int howto) {
-  ShouldNotReachHere();
-  return 0;
+  return ::shutdown(fd, howto);
 }
 
 int os::bind(int fd, struct sockaddr* him, socklen_t len) {
-  ShouldNotReachHere();
-  return 0;
+  return ::bind(fd, him, len);
 }
 
 int os::get_sock_name(int fd, struct sockaddr* him, socklen_t* len) {
-  ShouldNotReachHere();
-  return 0;
+  return ::getsockname(fd, him, len);
 }
 
 int os::get_sock_opt(int fd, int level, int optname,
                      char* optval, socklen_t* optlen) {
-  ShouldNotReachHere();
-  return 0;
+  return ::getsockopt(fd, level, optname, optval, optlen);
 }
 
 int os::set_sock_opt(int fd, int level, int optname,
                      const char* optval, socklen_t optlen) {
-  ShouldNotReachHere();
-  return 0;
+  return ::setsockopt(fd, level, optname, optval, optlen);
 }