diff --git a/cwmp.c b/cwmp.c
index 7d26f39..acca85d 100644
--- a/cwmp.c
+++ b/cwmp.c
@@ -518,6 +518,12 @@ void *thread_exit_program (void *v)
 	exit(EXIT_SUCCESS);
 }
 
+void signal_handler(int signal_num)
+{
+    close(cwmp_main.cr_socket_desc);
+    _exit(EXIT_SUCCESS);
+}
+
 int main(int argc, char **argv)
 {
 
@@ -528,6 +534,7 @@ int main(int argc, char **argv)
     pthread_t                       download_thread;
     pthread_t                       ubus_thread;
     pthread_t                       http_cr_server_thread;
+    struct sigaction                act = {0};
 
     if (error = cwmp_init(argc, argv, cwmp))
     {
@@ -548,6 +555,10 @@ int main(int argc, char **argv)
 
     http_server_init();
 
+    act.sa_handler = signal_handler;
+    sigaction(SIGINT,  &act, 0);
+    sigaction(SIGTERM, &act, 0);
+	
     error = pthread_create(&http_cr_server_thread, NULL, &thread_http_cr_server_listen, NULL);
     if (error<0)
     {
diff --git a/http.c b/http.c
index 3375574..b753568 100644
--- a/http.c
+++ b/http.c
@@ -43,7 +43,6 @@
 #define OPAQUE "11733b200778ce33060f31c9af70a870ba96ddd4"
 
 static struct http_client http_c;
-static int cr_socket_desc;
 
 #ifdef HTTP_CURL
 static CURL *curl;
@@ -339,34 +338,37 @@ http_done:
 
 void http_server_init(void)
 {
-    struct sockaddr_in server;
-    int cr_port;
+    struct sockaddr_in server = {0};
+    unsigned short cr_port;
 
     for(;;) {
-        cr_port = cwmp_main.conf.connection_request_port;
-        int i = (DEFAULT_CONNECTION_REQUEST_PORT == cr_port)? 1 : 0;
+        cr_port =  (unsigned short) (cwmp_main.conf.connection_request_port);
+        unsigned short i = (DEFAULT_CONNECTION_REQUEST_PORT == cr_port)? 1 : 0;
         //Create socket
-        cr_socket_desc = socket(AF_INET , SOCK_STREAM , 0);
-        if (cr_socket_desc == -1)
+        cwmp_main.cr_socket_desc = socket(AF_INET , SOCK_STREAM , 0);
+        if (cwmp_main.cr_socket_desc == -1)
         {
             CWMP_LOG (ERROR,"Could not open server socket for Connection Requests, Error no is : %d, Error description is : %s", errno, strerror(errno));
             sleep(1);
             continue;
         }
 
-        /* enable SO_REUSEADDR */
+        fcntl(cwmp_main.cr_socket_desc, F_SETFD, fcntl(cwmp_main.cr_socket_desc, F_GETFD) | FD_CLOEXEC);
+
         int reusaddr = 1;
-        if (setsockopt(cr_socket_desc, SOL_SOCKET, SO_REUSEADDR, &reusaddr, sizeof(int)) < 0) {
+        if (setsockopt(cwmp_main.cr_socket_desc, SOL_SOCKET, SO_REUSEADDR, &reusaddr, sizeof(int)) < 0)
+        {
             CWMP_LOG (WARNING,"setsockopt(SO_REUSEADDR) failed");
         }
 
         //Prepare the sockaddr_in structure
         server.sin_family = AF_INET;
         server.sin_addr.s_addr = INADDR_ANY;
+		
         for(;;i++) {
             server.sin_port = htons(cr_port);
             //Bind
-            if( bind(cr_socket_desc,(struct sockaddr *)&server , sizeof(server)) < 0)
+            if( bind(cwmp_main.cr_socket_desc,(struct sockaddr *)&server , sizeof(server)) < 0)
             {
                 //print the error message
                 CWMP_LOG (ERROR,"Could not bind server socket on the port %d, Error no is : %d, Error description is : %s", cr_port, errno, strerror(errno));
@@ -387,7 +389,7 @@ void http_server_init(void)
 
 void http_server_listen(void)
 {
-    int client_sock , c , *new_sock;
+    int client_sock , c;
     static int cr_request = 0;
     static time_t restrict_start_time = 0;
     time_t current_time;
@@ -395,11 +397,11 @@ void http_server_listen(void)
     struct sockaddr_in client;
 
     //Listen
-    listen(cr_socket_desc , 3);
+    listen(cwmp_main.cr_socket_desc , 3);
 
     //Accept and incoming connection
     c = sizeof(struct sockaddr_in);
-    while( (client_sock = accept(cr_socket_desc, (struct sockaddr *)&client, (socklen_t*)&c)) )
+    while( (client_sock = accept(cwmp_main.cr_socket_desc, (struct sockaddr *)&client, (socklen_t*)&c)) )
     {
         current_time = time(NULL);
         service_available = true;
diff --git a/inc/cwmp.h b/inc/cwmp.h
index 41eef8d..9b37e8b 100644
--- a/inc/cwmp.h
+++ b/inc/cwmp.h
@@ -187,6 +187,7 @@ typedef struct cwmp {
     time_t              start_time;
     struct session_status session_status;
     unsigned int cwmp_id;
+    int cr_socket_desc;
 } cwmp;
 
 typedef struct session {
diff --git a/init/cwmpd.init b/init/cwmpd.init
index 21aff34..c3cc1ee 100644
--- a/init/cwmpd.init
+++ b/init/cwmpd.init
@@ -133,38 +133,33 @@ start_cwmpd() {
 	fi
 }
 
-get_process_childs() {
+kill_process_childs() {
 	local pid_list="$1"
-	local proc="" line="" pt="" ppid="" pid="" pid_tmp="" pid_grep=""
+	local proc="" line="" pt="" ppid="" pid="" pid_childs="" pid_grep=""
+	[ "$pid_list" = "" ] && return
 	pid_grep=${pid_list// /\\|}
 
-	while [ "_$pid_grep" != "_" ];do
-		proc=`cat /proc/[0-9]*/stat | grep "$pid_grep"`
-		proc=${proc// /;;;;;}
-		pid_tmp=""
-		for line in $proc; do
-			pid="${line%%;;;;;*}"
-			ppid="${line#*;;;;;*;;;;;*;;;;;}"; ppid="${ppid%%;;;;;*}"
-			pt=`echo "$pid" | grep "$pid_grep"`
-			if [ "_$pt" != "_" -a "$pt" = "$pid" ]; then
-				continue
-			fi
-			pt=`echo "$ppid" | grep "$pid_grep"`
-			if [ "$pt" != "$ppid" -o "_$pid" = "_" ]; then
-				continue
-			fi
-			pid_list="$pid_list $pid"
-			if [  "_$pid_tmp" = "_" ]; then
-				pid_tmp="$pid"
-			else
-				pid_tmp="$pid_tmp\|$pid"
-			fi
-		done
-		pid_grep="$pid_tmp"
+	proc=`cat /proc/[0-9]*/stat | grep "$pid_grep"`
+	proc=${proc// /;;;;;}
+	for line in $proc; do
+		pid="${line%%;;;;;*}"
+		ppid="${line#*;;;;;*;;;;;*;;;;;}"; ppid="${ppid%%;;;;;*}"
+		pt=`echo "$pid" | grep "$pid_grep"`
+		if [ "_$pt" != "_" -a "$pt" = "$pid" ]; then
+			continue
+		fi
+		pt=`echo "$ppid" | grep "$pid_grep"`
+		if [ "$pt" != "$ppid" -o "_$pid" = "_" ]; then
+			continue
+		fi
+		pid_childs="$pid_childs $pid"
 	done
-	echo "$pid_list"
+	pid_childs=${pid_childs% }
+	pid_childs=${pid_childs# }
+	kill_process_childs "$pid_childs"
+	[ "$pid_childs" != "" ] && kill -9 $pid_childs
 }
-	
+
 pidof_cwmp() {
 	local pids=""
 	pids="`ps | grep /usr/sbin/cwmpd | sed 's/^ \+//g' | sed 's/ \+/:/g' | grep -v \" Z \" | grep -v grep | cut -f1 -d: | tr '\n' ' '`"
@@ -182,22 +177,17 @@ pidof_freecwmp() {
 }
 
 stop_freecwmp_cache() {
-	local pid_list="" pid="" pids="" found="1" p name state ppid rest cmd
+	local pid_list="" pid="" pids="" p name state ppid rest cmd
 
-	while [ "$found" = "1" ]; do
-		found="0"
-		pid_list="`pidof_freecwmp`"
-		for pid in $pid_list; do
-			read p name state ppid rest < /proc/$pid/stat
-			cmd=`cat /proc/$ppid/cmdline | grep /etc/init.d/cwmpd`
-			if [ "_$cmd" = "_" ]; then
-				continue
-			fi
-			kill -stop $ppid
-			found="1"
-			pids=`get_process_childs $ppid`
-			kill -9 "$pids"
-		done
+	pid_list="`pidof_freecwmp`"
+	for pid in $pid_list; do
+		read p name state ppid rest < /proc/$pid/stat
+		cmd=`cat /proc/$ppid/cmdline | grep /etc/init.d/cwmpd`
+		if [ "_$cmd" = "_" ]; then
+			continue
+		fi
+		kill_process_childs "$ppid"
+		[ "$ppid" != "" ] && kill -9 "$ppid"
 	done
 }
 
@@ -206,19 +196,12 @@ stop_cwmpd() {
 	local pid_list=""  pids="" str=""
 	pid_list=`pidof_cwmp`
 	if [ "_$pid_list" != "_" ]; then
-		pid_list=`get_process_childs "$pid_list"`
-		ubus call tr069 command '{"command": "exit"}' -t 3 &> /dev/null
-		kill -9 $pid_list
-	
-		pids="`pidof_cwmp`"
-		local cnt=0
-		while [ "_$pids" != "_" -a $cnt -lt 100 ];do
-			pid_list="$pid_list $pids"
-			kill -stop $pid_list
-			pid_list=`get_process_childs "$pid_list"`
+		kill_process_childs "$pid_list"
+		ubus call tr069 command '{"command": "exit"}' -t 3 >/dev/null
+		local ret=$?
+		if [ "$ret" != "0" ]; then
 			kill -9 $pid_list
-			pids="`pidof_cwmp`"
-	done
+		fi
 	fi
 	stop_freecwmp_cache
 }
diff --git a/ubus.c b/ubus.c
index 54adc3b..c5170a4 100644
--- a/ubus.c
+++ b/ubus.c
@@ -142,7 +142,8 @@ cwmp_handle_command(struct ubus_context *ctx, struct ubus_object *obj,
 		ubus_send_reply(ctx, req, b.head);
 
 		blob_buf_free(&b);
-
+		close(cwmp_main.cr_socket_desc);
+		CWMP_LOG(INFO,"Close connection request server socket");
 		error = pthread_create(&exit_thread, NULL, &thread_exit_program, NULL);
 		if (error<0)
 		{