diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 2b33f04..bcec49c 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,5 +1,9 @@
 add_executable(proxy-network
-    ./proxy-network.cpp
+    ./mt_web_server.cpp
+)
+
+add_executable(tempmulti
+    ./multi_threads.cpp
 )
 
 target_include_directories(proxy-network PUBLIC ${CMAKE_CURRENT_LIST_DIR})
diff --git a/src/multi_threads.cpp b/src/multi_threads.cpp
index b3b7190..e64fd4d 100644
--- a/src/multi_threads.cpp
+++ b/src/multi_threads.cpp
@@ -17,36 +17,51 @@
  *    September 12, 11:00 AM at Edwardsville, IL                             *
  *                                                                           *
  * ************************************************************************* */
+#include <ratio>
+#define UNIX // WIN for Windows environment, UNIX for BSD or LINUX env.    
+    /* FOR WIN ------------------------------------------------------------- */
+#ifdef WIN
 #include <process.h>  // for thread system calls (_beginthread, etc.)
 #include <windows.h>  // for TRUE, FALSE labels
+#endif
+    /* --------------------------------------------------------------------- */
+
+    /* FOR UNIX/LINUX ------------------------------------------------------ */
+#ifdef UNIX
+#endif
+    /* --------------------------------------------------------------------- */
+#include <chrono>
+#include <thread>
 #include <stdio.h>    // for printf
 #include <time.h>     // for clock() and CLK_TCK    
 
 /* Global label defenition ------------------------------------------------ */
 #define INTERVAL    1             // Transmission interval in seconds
-#define REPEATS     50            // Number of child thread's repeats
+#define REPEATS     10            // Number of child thread's repeats
 
 /* Global Variables ------------------------------------------------------- */
 int nChild1_status;               // Child thread #1 status
 int nChild2_status;               // Child thread #2 status    
 
 /* Prototypes ------------------------------------------------------------- */
-void ChildThread1(void *dummy);   // The child thread #1
-void ChildThread2(void *dummy);   // The child thread #2
+void ChildThread1(void);   // The child thread #1
+void ChildThread2(void);   // The child thread #2
 
 /* The MAIN --------------------------------------------------------------- */
-void main (void)
+int main (void)
 {
    /* Set the child thread status (TRUE = RUNNING) --- */
-   nChild1_status = TRUE;
-   nChild2_status = TRUE;
+   nChild1_status = true;
+   nChild2_status = true;
 
    /* Create and start the two threads --- */
-   _beginthread (ChildThread1, 0, NULL );  // Start child process #1
-   _beginthread (ChildThread2, 0, NULL );  // Start child process #2
+    std::thread nChild1(ChildThread1);  // Start child process #1
+    std::thread nChild2(ChildThread2);  // Start child process #2
+    nChild1.join();
+    nChild2.join();
 
    /* Spin-loop until both threads finish --- */
-   while ((nChild1_status == TRUE)||(nChild2_status == TRUE))
+   while ((nChild1_status == true)||(nChild2_status == true))
    {  ;  }
 
    /* Two threads are now finished --- */
@@ -55,7 +70,7 @@ void main (void)
 }
 
 // The Child-Thread #1 ///////////////////////////////////////////////////////
-void ChildThread1(void *dummy)
+void ChildThread1(void)
 {
    /* Child #1 local variable(s) --- */
    int    i;    // Loop counter
@@ -64,24 +79,24 @@ void ChildThread1(void *dummy)
    printf("Child Thread #1 has started ... \n");
 
    /* wait for 10 seconds w/ count down --- */
-   for (i = 0; i < REPEATS ; i++)
+   for (i = 0; i < REPEATS; i++)
    {
        /* Wait for 10 seconds --- */
-       Sleep((clock_t)INTERVAL * CLOCKS_PER_SEC);
+       std::this_thread::sleep_for(std::chrono::duration<double, std::milli>(1000));
 
        /* Display count down --- */
        printf("Child #1: %d more second(s) to finish ...\n", REPEATS -i);
    }
 
    /* Reset the status flag --- */
-   nChild1_status = FALSE;
+   nChild1_status = false;
 
    /* Terminate this thread --- */
-   _endthread();
+   //_endthread();
 }
 
 // The Child-Thread #2 ///////////////////////////////////////////////////////
-void ChildThread2(void *dummy)
+void ChildThread2(void)
 {
    /* Child #2 local variable(s) --- */
    int    i;    // Loop counter
@@ -90,20 +105,20 @@ void ChildThread2(void *dummy)
    printf("Child Thread #2 has started ... \n");
 
    /* wait for 10 seconds w/ count down --- */
-   for (i = 0; i < REPEATS ; i++)
+   for (i = 0; i < REPEATS; i++)
    {
        /* Wait for 10 seconds --- */
-       Sleep((clock_t)INTERVAL * CLOCKS_PER_SEC);
+       std::this_thread::sleep_for(std::chrono::duration<double, std::milli>(1000));
 
        /* Display count down --- */
        printf("Child #2: %d more second(s) to finish ...\n", REPEATS -i);
    }
 
    /* Reset the status flag --- */
-   nChild2_status = FALSE;
+   nChild2_status = false;
 
    /* Terminate this thread --- */
-   _endthread();
+   //_endthread();
 }
 
-// THE END OF LINES //////////////////////////////////////////////////////////
\ No newline at end of file
+// THE END OF LINES //////////////////////////////////////////////////////////