diff --git a/Changelog b/Changelog
index eaadd62..f6e656c 100644
--- a/Changelog
+++ b/Changelog
@@ -1,3 +1,6 @@
+2020-10-18:
+- added support for windows. Everything should work but UNIX sockets.
+
 2020-10-15:
 - added: TCP::isListen function
 
diff --git a/Makefile b/Makefile
index 7de214c..63aab30 100644
--- a/Makefile
+++ b/Makefile
@@ -4,9 +4,12 @@ VERSION=0.1
 PREFIX=/usr/local
 ETCPREFIX=/etc
 
+# WINLIBS=-lwsock32 -lws2_32
+
 CXX=g++
 CXXFLAGS= -ggdb -fPIC -pg -Wno-write-strings -I./ -std=c++11
-LDFLAGS= -lm -lc -pg -lssl -lcrypto 
+# LDFLAGS= -lm -lc -pg -lssl -lcrypto $(WINLIBS)
+LDFLAGS= -lm -pg -lssl -lcrypto $(WINLIBS)
 
 DEFAULT_TCPPORT=6131
 DEFAULT_UDPPORT=6131
@@ -23,13 +26,13 @@ DEPENDFILE=.depend
 all: dep $(TARGET) test-udp test-tcp test-ssl
 
 test-tcp: $(TARGET) test-tcp.o config.h
-	$(CXX) test-tcp.o -o $@ $(LDFLAGS) -lUDPTCPNetwork -L./ -I./
+	$(CXX) test-tcp.o -o $@ -lUDPTCPNetwork -L./ -I./ $(LDFLAGS)
 
 test-ssl: $(TARGET) test-ssl.o config.h
-	$(CXX) test-ssl.o -o $@ $(LDFLAGS) -lUDPTCPNetwork -L./ -I./
+	$(CXX) test-ssl.o -o $@ -lUDPTCPNetwork -L./ -I./ $(LDFLAGS) 
 
 test-udp: $(TARGET) test-udp.o config.h
-	$(CXX) test-udp.o -o $@ $(LDFLAGS) -lUDPTCPNetwork -L./ -I./
+	$(CXX) test-udp.o -o $@ -lUDPTCPNetwork -L./ -I./  $(LDFLAGS)
 
 keygen:
 	# openssl req -nodes -new -newkey rsa:2048 -sha256 -out csr.pem -keyout privkey.pem
@@ -48,7 +51,8 @@ uninstall:
 rebuild: clean all
 
 $(TARGET): $(OBJLIB) $(INCLIB)
-	$(CXX) -shared -Wl,-soname,lib$(OBJLIB_NAME).so -o $(TARGET) $^ -lc $(LDFLAGS)
+	# $(CXX) -shared -Wl,-soname,lib$(OBJLIB_NAME).so -o $(TARGET) $^ -lc $(LDFLAGS)
+	$(CXX) -shared -Wl,-soname,lib$(OBJLIB_NAME).so -o $(TARGET) $^ $(LDFLAGS)
 	ln -sf $(TARGET) lib$(OBJLIB_NAME).so
 	ar rcs lib$(OBJLIB_NAME).a $(OBJLIB)
 
@@ -68,6 +72,7 @@ clean:
 	rm -rf .depend
 	rm -rf *.so
 	rm -rf *.a
+	rm -rf *.dll
 	rm -rf *.so.*
 	rm -rf *.pem -rf
 	
diff --git a/Makefile.win b/Makefile.win
new file mode 100644
index 0000000..d4ab5a7
--- /dev/null
+++ b/Makefile.win
@@ -0,0 +1,102 @@
+# .SILENT:
+
+VERSION=0.1
+PREFIX=/usr
+ETCPREFIX=/etc
+
+WINLIBS=-lwsock32 -lws2_32
+
+CXX=g++
+CXXFLAGS= -ggdb -fPIC -Wno-write-strings -I./ -std=c++11
+LDFLAGS= -lm -lssl -lcrypto $(WINLIBS)
+
+DEFAULT_TCPPORT=6131
+DEFAULT_UDPPORT=6131
+DEFAULT_SERVER=localhost
+
+OBJLIB=network.o udp.o tcp.o unix.o ssl.o
+INCLIB=config.h UDPTCPNetwork.h
+OBJLIB_NAME=UDPTCPNetwork
+TARGET=UDPTCPNetwork.dll
+
+DISTNAME=libUDPTCPNetwork-$(VERSION)
+DEPENDFILE=.depend
+
+all: dep $(TARGET) test-udp test-tcp test-ssl
+
+test-tcp: $(TARGET) test-tcp.o config.h
+	$(CXX) test-tcp.o -o $@ -lUDPTCPNetwork -L./ -I./ $(LDFLAGS)
+
+test-ssl: $(TARGET) test-ssl.o config.h
+	$(CXX) test-ssl.o -o $@ -lUDPTCPNetwork -L./ -I./ $(LDFLAGS) 
+
+test-udp: $(TARGET) test-udp.o config.h
+	$(CXX) test-udp.o -o $@ -lUDPTCPNetwork -L./ -I./  $(LDFLAGS)
+
+keygen:
+	# openssl req -nodes -new -newkey rsa:2048 -sha256 -out csr.pem -keyout privkey.pem
+	openssl req -x509 -sha256 -nodes -days 365 -newkey rsa:2048 -keyout privkey.pem -out cert.pem
+
+install: $(TARGET)
+	cp -f $(TARGET) $(PREFIX)/lib/
+	cp -f UDPTCPNetwork.h $(PREFIX)/include/
+
+uninstall:
+	rm -f $(PREFIX)/lib/$(TARGET)
+	rm -f $(PREFIX)/lib/lib$(OBJLIB_NAME).so
+	rm -f $(PREFIX)/include/UDPTCPNetwork.h
+
+rebuild: clean all
+
+$(TARGET): $(OBJLIB) $(INCLIB)
+	$(CXX) -shared -Wl,--out-implib,libUDPTCPNetwork.a -o $(TARGET) $^ $(LDFLAGS)
+	ln -sf $(TARGET) lib$(OBJLIB_NAME).so
+	ar rcs lib$(OBJLIB_NAME).a $(OBJLIB)
+
+dep:
+	$(CXX) -MM `ls *.cc` $(CXXFLAGS) > $(DEPENDFILE)
+	
+clean:
+	rm test-tcp -rf
+	rm test-udp -rf
+	rm test-ssl -rf
+	rm -rf gmon.out
+	rm *.s -rf
+	rm *.a -rf
+	rm -rf *.dll
+	rm *.o -rf
+	rm *.oo -rf
+	rm *~ -rf
+	rm -rf config.h
+	rm -rf .depend
+	rm -rf *.so
+	rm -rf *.a
+	rm -rf *.so.*
+	rm -rf *.pem -rf
+	
+
+cleanall: clean
+
+source: cleanall
+
+config: 
+	echo "#ifndef _CONFIG_H_" > config.h
+	echo "#define _CONFIG_H_" >> config.h
+	echo "" >> config.h
+	echo "#define UDPTCPNETWORK_VERSION \"$(VERSION)\"" >> config.h
+	echo "" >> config.h
+	echo "#define PREFIX \"$(PREFIX)\"" >> config.h
+	echo "#define ETCPREFIX \"$(ETCPREFIX)\"" >> config.h
+	echo "" >> config.h
+	echo "#endif" >> config.h
+
+dist: clean
+	mkdir -p $(DISTNAME)
+	cp -rf Makefile $(DISTNAME)
+	cp -rf *.h $(DISTNAME)
+	cp -rf *.cc $(DISTNAME)
+	tar cvzf $(DISTNAME).tgz  --exclude=*/CVS/* --exclude=*/CVS/ $(DISTNAME)
+	rm -rf $(DISTNAME)
+
+-include $(DEPENDFILE)
+
diff --git a/UDPTCPNetwork.h b/UDPTCPNetwork.h
index edb79ac..20fec16 100644
--- a/UDPTCPNetwork.h
+++ b/UDPTCPNetwork.h
@@ -2,9 +2,42 @@
 #ifndef _UDPTCPNETWORK_H_
 #define _UDPTCPNETWORK_H_
 
+#if defined(_WIN32) || defined(_WIN64) || defined(__CYGWIN__)
+
+#define _NTDDI_VERSION_FROM_WIN32_WINNT2(ver)    ver##0000
+#define _NTDDI_VERSION_FROM_WIN32_WINNT(ver)     _NTDDI_VERSION_FROM_WIN32_WINNT2(ver)
+
+#ifndef _WIN32_WINNT
+#  define _WIN32_WINNT 0x501
+#endif
+#ifndef NTDDI_VERSION
+#  define NTDDI_VERSION _NTDDI_VERSION_FROM_WIN32_WINNT(_WIN32_WINNT)
+#endif
+
+#include <winsock2.h>
+#include <io.h>
+#include <Ws2tcpip.h>
+#include <string.h>
+
+#ifndef bzero
+#define bzero(__z__, __x__) memset (__z__, 0x0, __x__)
+#endif
+
+#ifndef MSG_NOSIGNAL
+# define MSG_NOSIGNAL 0
+#endif
+
+#else
+
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <sys/un.h>
+
+#endif
+
 #include <openssl/ssl.h>
 #include <openssl/err.h>
 
@@ -146,6 +179,8 @@ public:
 /************************************************************************
  * unix socket related functions
  */
+#if defined(_WIN32) || defined(_WIN64) || defined(__CYGWIN__)
+#else
 class UNIX {
 private:
 	int sock;
@@ -172,7 +207,7 @@ public:
 
 	int GetSocket() { return sock; };
 };
-
+#endif
 
 
 #endif
diff --git a/network.cc b/network.cc
index 7683211..9197d0b 100644
--- a/network.cc
+++ b/network.cc
@@ -1,11 +1,6 @@
 
 #include "UDPTCPNetwork.h"
 
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <netdb.h>
 #include <stdio.h>
 #include <unistd.h> /* close() */
 #include <string.h> /* memset() */
@@ -14,12 +9,10 @@ using namespace std;
 
 char dnsip[NET_HOSTLEN];
 
-
 //
 // convert host and port to sockaddr_in6
 //
-int dns_filladdr (string host, string port, int ai_family,
-		struct sockaddr_storage *sAddr) {
+int dns_filladdr (string host, string port, int ai_family, struct sockaddr_storage *sAddr) {
     struct addrinfo hints, *res;
     int err;
 
diff --git a/ssl.cc b/ssl.cc
index e6302c6..7a4cc41 100644
--- a/ssl.cc
+++ b/ssl.cc
@@ -114,8 +114,13 @@ int SSLSocket::Connect (int sockfd, int block_timeout) {
 	timeout = block_timeout;
 
 	if (sockfd > 0 && block_timeout > 0) {
+#if defined(_WIN32) || defined(_WIN64) || defined(__CYGWIN__)
+		u_long mode = 1;
+		ioctlsocket(sockfd, FIONBIO, &mode);
+#else
 		flags = fcntl(sockfd, F_GETFL, 0);
 		fcntl(sockfd, F_SETFL, flags | O_NONBLOCK);
+#endif
 	}
 
 	ssl = SSL_new(ctx);
@@ -142,8 +147,13 @@ int SSLSocket::Accept (int sockfd, int block_timeout) {
 	NewServerCTX();
 
 	if (sockfd > 0 && block_timeout > 0) {
+#if defined(_WIN32) || defined(_WIN64) || defined(__CYGWIN__)
+		u_long mode = 1;
+		ioctlsocket(sockfd, FIONBIO, &mode);
+#else
 		flags = fcntl(sockfd, F_GETFL, 0);
 		fcntl(sockfd, F_SETFL, flags | O_NONBLOCK);
+#endif
 	}
 
 	ssl = SSL_new(ctx);
@@ -220,8 +230,13 @@ int SSLSocket::Close () {
 	}
 
 	if (sock > 0 && timeout > 0) {
+#if defined(_WIN32) || defined(_WIN64) || defined(__CYGWIN__)
+		u_long mode = 0;
+		ioctlsocket(sock, FIONBIO, &mode);
+#else
 		flags = fcntl(sock, F_GETFL, 0);
 		fcntl(sock, F_SETFL, flags & ~(O_NONBLOCK));
+#endif
 	}
 
 	return sock;
diff --git a/tcp.cc b/tcp.cc
index f0d863b..c3dab00 100644
--- a/tcp.cc
+++ b/tcp.cc
@@ -2,17 +2,11 @@
  *
  */
 
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <netdb.h>
 #include <stdio.h>
 #include <unistd.h> /* close() */
 #include <stdlib.h>
 #include <string.h> /* memset() */
 #include <errno.h>
-#include <string.h>
 
 #include "UDPTCPNetwork.h"
 
@@ -66,7 +60,7 @@ int TCP::Listen(int port) {
         if (sock == -1) continue;
 
         i = 1;
-        if ((err = setsockopt (sock, SOL_SOCKET, SO_REUSEADDR, &i, sizeof (i))) != 0) {
+        if ((err = setsockopt (sock, SOL_SOCKET, SO_REUSEADDR, (char*)&i, sizeof (i))) != 0) {
         	printf ("%s:%d setsockopt error\n", __FILE__, __LINE__);
         }
 
@@ -75,7 +69,7 @@ int TCP::Listen(int port) {
 			sock = -1;
 			continue;
         }
-        if (listen (sock, 8) < 0) {
+        if (listen (sock, 8) < 0) {	// maximum of 8 connections at the time
 			close (sock);
 			sock = -1;
 			continue;
@@ -122,7 +116,11 @@ TCP* TCP::Accept() {
 	}
 
 	else if (retval) {
+#if defined(_WIN32) || defined(_WIN64) || defined(__CYGWIN__)
+		newsock = accept (sock, (struct sockaddr *) &cli_addr, (int*) &cli_len);
+#else
 		newsock = accept (sock, (struct sockaddr *) &cli_addr, &cli_len);
+#endif
 		if (newsock < 0) return NULL;
 		tcp = new TCP();
 		tcp->SetSocket(newsock, &cli_addr, cli_len);
@@ -188,7 +186,7 @@ int TCP::Connect() {
 		// setup timeout to max 2 secs
 		timeout.tv_sec = 2;
 		timeout.tv_usec = 0;
-		setsockopt(s, SOL_SOCKET, SO_SNDTIMEO, &timeout, sizeof(timeout));
+		setsockopt(s, SOL_SOCKET, SO_SNDTIMEO, (char*)&timeout, sizeof(timeout));
 		
         if (s == -1) continue;
         if (connect(s, rp->ai_addr, rp->ai_addrlen) != -1) {
diff --git a/test-ssl.cc b/test-ssl.cc
index 20b345e..729aa15 100644
--- a/test-ssl.cc
+++ b/test-ssl.cc
@@ -6,6 +6,9 @@
 
 #define DEFAULT_PORT 12345
 
+#if defined(_WIN32) || defined(_WIN64) || defined(__CYGWIN__)
+#else
+
 void server () {
 	TCP tcpserver;
 	TCP *connection;
@@ -126,11 +129,13 @@ void client () {
 	tcpclient.Close();
 };
 
-
+#endif
 
 int main (int argc, char **argv) {
 	pid_t pid;
 
+#if defined(_WIN32) || defined(_WIN64) || defined(__CYGWIN__)
+#else
 	pid = fork();
 	if (pid == 0) { // child process
 		printf ("start client\n");
@@ -145,6 +150,7 @@ int main (int argc, char **argv) {
 	else {			// parent process
 		server();
 	}
+#endif
 
 	return 0;
 };
diff --git a/test-tcp.cc b/test-tcp.cc
index f9ab309..cb317b7 100644
--- a/test-tcp.cc
+++ b/test-tcp.cc
@@ -6,6 +6,8 @@
 
 #define DEFAULT_PORT 12345
 
+#if defined(_WIN32) || defined(_WIN64) || defined(__CYGWIN__)
+#else
 
 void server () {
 	TCP tcpserver;
@@ -106,11 +108,13 @@ void client () {
 	tcpclient.Close();
 };
 
-
+#endif
 
 int main (int argc, char **argv) {
 	pid_t pid;
 
+#if defined(_WIN32) || defined(_WIN64) || defined(__CYGWIN__)
+#else
 	pid = fork();
 	if (pid == 0) { // child process
 		client();
@@ -121,6 +125,7 @@ int main (int argc, char **argv) {
 	else {			// parent process
 		server();
 	}
+#endif
 
 	return 0;
 };
diff --git a/test-udp.cc b/test-udp.cc
index dd05bad..561627b 100644
--- a/test-udp.cc
+++ b/test-udp.cc
@@ -79,6 +79,8 @@ int main (int argc, char **argv) {
 
 	pid_t pid;
 
+#if defined(_WIN32) || defined(_WIN64) || defined(__CYGWIN__)
+#else
 	pid = fork();
 	if (pid == 0) { // child process
 		client.Loop ();
@@ -86,7 +88,7 @@ int main (int argc, char **argv) {
 	else {			// parent process
 		server.Loop ();
 	}
-
+#endif
 	return 0;
 };
 
diff --git a/udp.cc b/udp.cc
index f0dfdcf..a40ab5a 100644
--- a/udp.cc
+++ b/udp.cc
@@ -2,12 +2,7 @@
  *
  */
 
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
 #include <fcntl.h>
-#include <netdb.h>
 #include <stdio.h>
 #include <unistd.h> /* close() */
 #include <stdlib.h>
@@ -95,12 +90,17 @@ long int UDP::Read(string *source, char *buffer, long int len) {
 
 
 int UDP::SetBlocked(int bl) {
+#if defined(_WIN32) || defined(_WIN64) || defined(__CYGWIN__)
+	u_long mode = bl;
+	return ioctlsocket(sock, FIONBIO, &mode);
+#else
 	int flags = fcntl(sock, F_GETFL, 0);
 
 	if (bl) flags &= ~O_NONBLOCK;
 	else flags |= O_NONBLOCK;
 
 	return fcntl(sock, F_SETFL, flags | O_NONBLOCK);
+#endif
 }
 
 
diff --git a/unix.cc b/unix.cc
index 39d5d77..783b222 100644
--- a/unix.cc
+++ b/unix.cc
@@ -2,12 +2,6 @@
  *
  */
 
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <sys/un.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <netdb.h>
 #include <stdio.h>
 #include <unistd.h> /* close() */
 #include <stdlib.h>
@@ -17,6 +11,11 @@
 
 #include "UDPTCPNetwork.h"
 
+// for now no support on windows
+#if defined(_WIN32) || defined(_WIN64) || defined(__CYGWIN__)
+#warning UNIX socket are not supported on windows.
+#else
+
 UNIX::~UNIX() {
 	Close();
 }
@@ -208,3 +207,4 @@ int UNIX::IsData(int timeout) {
 };
 
 
+#endif