To work server and client test program on Windows.

client.c

@@ -189,6 +189,7 @@ void error(const char *msg)
     exit(0);
 }
 
+
 int main(int argc, char *argv[])
 {
     int sockfd, portno, n;
@@ -214,10 +215,9 @@ int main(int argc, char *argv[])
         exit(0);
     }
     bzero((char *) &serv_addr, sizeof(serv_addr));
+
     serv_addr.sin_family = AF_INET;
-    bcopy((char *)server->h_addr, 
-         (char *)&serv_addr.sin_addr.s_addr,
-         server->h_length);
+    serv_addr.sin_addr.s_addr = inet_addr(argv[1]);  
     serv_addr.sin_port = htons(portno);
     if (connect(sockfd,(struct sockaddr *) &serv_addr,sizeof(serv_addr)) < 0) 
         error("ERROR connecting");

server.c

@@ -5,9 +5,11 @@
 #include <string.h>
 #include <unistd.h>
 #include <sys/types.h> 
+#include <fcntl.h>
 #ifdef WIN32
 #include <winsock2.h>
 #include <ws2tcpip.h>
+#include <fcntl.h>
 
 static void bzero(void *address, int length)
 {
@@ -16,14 +18,86 @@ static void bzero(void *address, int length)
 #else
 #include <sys/socket.h>
 #include <netinet/in.h>
+#include <io.h>
 #endif
-
-void error(const char *msg)
+void error(const char *fmt, ...)
 {
-    perror(msg);
+    static char buffer[512];
+    va_list a_list;
+    va_start(a_list, fmt);
+    vsprintf(buffer, fmt, a_list);
+    perror(buffer);
+    va_end(a_list);
     exit(1);
 }
 
+
+#ifdef WIN32
+#undef socket
+static int mingw_socket(int domain, int type, int protocol)
+{
+	int sockfd;
+	SOCKET s;
+
+	s = WSASocket(domain, type, protocol, NULL, 0, 0);
+	if (s == INVALID_SOCKET) {
+		/*
+		 * WSAGetLastError() values are regular BSD error codes
+		 * biased by WSABASEERR.
+		 * However, strerror() does not know about networking
+		 * specific errors, which are values beginning at 38 or so.
+		 * Therefore, we choose to leave the biased error code
+		 * in errno so that _if_ someone looks up the code somewhere,
+		 * then it is at least the number that are usually listed.
+		 */
+		errno = WSAGetLastError();
+		return -1;
+	}
+	/* convert into a file descriptor */
+	if ((sockfd = _open_osfhandle(s, O_RDWR|O_BINARY)) < 0) {
+		closesocket(s);
+		fprintf(stderr, "unable to make a socket file descriptor: %s",
+			strerror(errno));
+		return -1;
+	}
+	return sockfd;
+}
+#define socket mingw_socket
+#undef bind
+static int mingw_bind(int sockfd, struct sockaddr *sa, size_t sz)
+{
+	SOCKET s = (SOCKET)_get_osfhandle(sockfd);
+	return bind(s, sa, sz);
+}
+#define bind mingw_bind
+
+#undef listen
+int mingw_listen(int sockfd, int backlog)
+{
+	SOCKET s = (SOCKET)_get_osfhandle(sockfd);
+	return listen(s, backlog);
+}
+#define listen mingw_listen
+#undef accept
+int mingw_accept(int sockfd1, struct sockaddr *sa, socklen_t *sz)
+{
+	int sockfd2;
+
+	SOCKET s1 = (SOCKET)_get_osfhandle(sockfd1);
+	SOCKET s2 = accept(s1, sa, sz);
+
+	/* convert into a file descriptor */
+	if ((sockfd2 = _open_osfhandle(s2, O_RDWR|O_BINARY)) < 0) {
+		int err = errno;
+		closesocket(s2);
+		error("unable to make a socket file descriptor: %s",
+			strerror(err));
+	}
+	return sockfd2;
+}
+#define accept mingw_accept
+
+#endif
 int main(int argc, char *argv[])
 {
      int sockfd, newsockfd, portno;
@@ -45,7 +119,7 @@ int main(int argc, char *argv[])
      bzero((char *) &serv_addr, sizeof(serv_addr));
      portno = atoi(argv[1]);
      serv_addr.sin_family = AF_INET;
-     serv_addr.sin_addr.s_addr = INADDR_ANY;
+     serv_addr.sin_addr.s_addr = inet_addr("127.0.0.1");
      serv_addr.sin_port = htons(portno);
      if (bind(sockfd, (struct sockaddr *) &serv_addr,
               sizeof(serv_addr)) < 0) 
@@ -67,3 +141,4 @@ int main(int argc, char *argv[])
 #endif
      return 0; 
 }
+