diff --git a/bin/conf/main.conf b/bin/conf/main.conf
index 0820712..8b8607e 100644
--- a/bin/conf/main.conf
+++ b/bin/conf/main.conf
@@ -27,6 +27,7 @@ UnixSocketRecvAddr=/home/mesasoft/frag_rssb/un_recv
 
 
 #udp socket:send frag
+UdpSendSwitch=0
 UdpSendIP=127.0.0.1;127.0.0.1;
 UdpSendIPNum=2
 UdpSendPort=33082;33083
@@ -237,4 +238,9 @@ capacity=32
 cost=32
 wlb_report_interval=10
 
-bfd_recv_port=0
+/*端口为0表示不开启保活功能*/
+bfd_recv_port=3785
+/*wait_queue设置的故障阈值*/
+down_threshold=90
+/*故障判定次数*/ 
+down_num=20
diff --git a/frag_rssb瀹夎浣跨敤鎵嬪唽.docx b/frag_rssb瀹夎浣跨敤鎵嬪唽.docx
index 4e34160..0be6b1b 100644
Binary files a/frag_rssb瀹夎浣跨敤鎵嬪唽.docx and b/frag_rssb瀹夎浣跨敤鎵嬪唽.docx differ
diff --git a/src/AV_sendback.h b/src/AV_sendback.h
index 07de83b..151c1a8 100644
--- a/src/AV_sendback.h
+++ b/src/AV_sendback.h
@@ -22,7 +22,7 @@
 #define	PROTOCOL_MMS				0x09
 #define	PROTOCOL_RTMP				0x0A
 #define	PROTOCOL_SIP				0x0B
-
+ 
 /*媒体类型*/
 #define MEDIA_TYPE_UNKNOWN    			0x00
 /*媒体类型:视频支持的媒体类型*/
diff --git a/src/frag_send.c b/src/frag_send.c
index f13b68d..58b053c 100644
--- a/src/frag_send.c
+++ b/src/frag_send.c
@@ -271,14 +271,16 @@ void send_data_by_unixsocket(const char* data, uint32_t datalen, int thread_id)
 }
 
 void send_data(const char* data, uint32_t datalen, int thread_id)
-{
-	/*采用UDP回传*/
-#if K_PROJECT
-	send_data_by_udp(data, datalen, thread_id);		
-	/*采用unix socket回传*/
-#else	
-	send_data_by_unixsocket(data, datalen, thread_id);
-#endif
+{		
+	if(g_frag_cfg.send_udp_switch)
+	{		
+		send_data_by_udp(data, datalen, thread_id);	
+	}
+	else
+	{
+		/*采用unix socket回传*/
+		send_data_by_unixsocket(data, datalen, thread_id);
+	}
 }
 
 void send_data_bizman(const char* data, uint32_t datalen, uint64_t mid,uint32_t ip, int thread_id)
@@ -660,7 +662,7 @@ void pack_and_send_media_info(media_info_t* media_info, frag_in_t* frg, int thre
 		if(g_frag_run.usm_on_flag)
 		{
 			send_data_usm(sendbuf,sendbuflen,thread_id);	
-		}
+		}		
 		else
 		{
 			send_data(sendbuf, sendbuflen, thread_id);
diff --git a/src/hard_keepalive.c b/src/hard_keepalive.c
index ded8991..e25fbea 100644
--- a/src/hard_keepalive.c
+++ b/src/hard_keepalive.c
@@ -1,174 +1,202 @@
-
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <pthread.h>
-#include <stdio.h> 
-#include <stdlib.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <string.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <net/if.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <netdb.h>
-#include <sys/un.h>
-#include <stddef.h>//offsetof
-
-#include "hard_keepalive.h"
-
-int udp_socket_recv(int sockfd, uint32_t *src_ip, uint16_t *src_port, uint8_t *buf, uint32_t buf_size)
-{
-    if (NULL == buf)     return -1;
-
-    int numbytes;
-    struct sockaddr_storage their_addr;
-    socklen_t addr_len = sizeof(their_addr);
-	
-    if ((numbytes = recvfrom(sockfd, buf, buf_size , 0,(struct sockaddr *)&their_addr, &addr_len)) == -1) 
-	{
-        perror("recvfrom");
-        return -1;
-    }
-    *src_ip = ((struct sockaddr_in *)&their_addr)->sin_addr.s_addr;	
-    *src_port = ((struct sockaddr_in *)&their_addr)->sin_port;
-    return numbytes;
-}
-
-// send udp packet
-int udp_socket_send(int sockfd, uint32_t addr, uint16_t port, char *data, int datalen)
-{
-    struct sockaddr_in dst_addr; /* connector's address information */
-    dst_addr.sin_family = AF_INET; /* host byte order */
-    dst_addr.sin_port = port; /* short, network byte order */
-    dst_addr.sin_addr.s_addr = addr;
-    bzero(&(dst_addr.sin_zero), 8); /* zero the rest of the struct */
-	int to_send_len=datalen;
-	int already_sended_len=0;
-	while(to_send_len>0)
-	{
-		already_sended_len=sendto(sockfd,data,
-								to_send_len-already_sended_len,
-								0,
-								(struct sockaddr *)&(dst_addr),
-								sizeof(dst_addr));
-		if(already_sended_len==-1)
-		{
-			if((EAGAIN == errno)||( EINTR == errno )|| (EWOULDBLOCK==errno))
-			{
-				continue;
-			}
-			else
-			{
-				return -1;
-			}
-		}
-		to_send_len-=already_sended_len;						
-	}
-    return already_sended_len;
-}
-
-int create_recv_udp_socket(uint16_t port)
-{
-    int sockfd = socket(AF_INET, SOCK_DGRAM, 0);
-    if (-1 == sockfd) 
-	{
-        perror("listener: socket");
-        return -1;
-    }
-    struct sockaddr_in my_addr; 			/* my address information */
-    my_addr.sin_family = AF_INET; 			/* host byte order */
-    my_addr.sin_port = port; 				/* short, network byte order */
-    my_addr.sin_addr.s_addr = INADDR_ANY; 	/* auto-fill with my IP */
-    bzero(&(my_addr.sin_zero), 8); 			/* zero the rest of the struct */
-
-    if (bind(sockfd, (struct sockaddr *)&my_addr, sizeof(struct sockaddr)) == -1) 
-	{
-        perror("listener: bind");
-        close(sockfd);
-        return -1;
-    }   
-    return sockfd;
-}
-
-void* thread_hard_keepalive(void *param)
-{
-	char		buf[1500] = {0};
-	char		discriminator_temp[ID_SIZE] = {0};
-	bfd_port_t*	bfd_port = (bfd_port_t*)param;
-	int			size = 0;
-	uint32_t	src_ip = 0;	
-	uint16_t	src_port = 0;	
-	int			send_rec = 0;
-	fd_set 		rset;
-	int			recv_pkt_sd = create_recv_udp_socket(htons(bfd_port->recv_port));
-	
-	if(-1==recv_pkt_sd)
-	{
-		printf("hard_keepalive create socket error.\n");		
-		return NULL;
-	}
-
-	while(1)
-	{		
-		FD_ZERO(&rset);
-		FD_SET(recv_pkt_sd,&rset);
-		if(-1==select(recv_pkt_sd+1,&rset,NULL,NULL,NULL))
-		{			
-			continue;
-		}
-		if(FD_ISSET(recv_pkt_sd, &rset))
-		{
-			size = udp_socket_recv(recv_pkt_sd, &src_ip, &src_port, (unsigned char*)buf, sizeof(buf));			
-			if(size>0)
-			{
-				/*交换discriminator*/
-				memcpy(discriminator_temp, buf+MY_ID_OFFSET, ID_SIZE);
-				memcpy(buf+MY_ID_OFFSET, buf+YOUR_ID_OFFSET, ID_SIZE);
-				memcpy(buf+YOUR_ID_OFFSET, discriminator_temp, ID_SIZE);
-				send_rec = udp_socket_send(recv_pkt_sd,
-												src_ip,
-												src_port,
-												(char*)buf,size);
-				if(-1==send_rec)
-				{
-					printf("hard_keepalive send pkt error.\n");	
-				}
-			}
-		}
-		else
-		{
-			continue;
-		}
-	}
-	
-	return NULL;
-}
-
-int hard_keepalive_run(void* bfd_port)
-{
-	pthread_t	 	thread_desc;
-	pthread_attr_t 	attr;
-
-	memset(&thread_desc, 0, sizeof(thread_desc));
-	memset(&attr, 0, sizeof(attr));	
-	
-	if(0 != pthread_attr_init(&(attr))) 
-    {
-		return -1;
-	}
-	if(0 != pthread_attr_setdetachstate(&(attr), PTHREAD_CREATE_DETACHED)) 
-    {		
-		return -1;
-	}
-	if(0 != pthread_create(&(thread_desc), &(attr), thread_hard_keepalive, (void*)bfd_port)) 
-    {
-		pthread_attr_destroy(&(attr));
-		return -1;
-	}
-	pthread_attr_destroy(&(attr));
-	return 0;
-}
-
+
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <pthread.h>
+#include <stdio.h> 
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <net/if.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <sys/un.h>
+#include <stddef.h>//offsetof
+
+#include "hard_keepalive.h"
+#include "main.h"
+
+extern frag_rssb_parameter_t 		g_frag_run;
+extern frag_rssb_configure_t 		g_frag_cfg;
+extern frag_rssb_status_t 			g_frag_stat;
+
+
+int udp_socket_recv(int sockfd, uint32_t *src_ip, uint16_t *src_port, uint8_t *buf, uint32_t buf_size)
+{
+    if (NULL == buf)     return -1;
+
+    int numbytes;
+    struct sockaddr_storage their_addr;
+    socklen_t addr_len = sizeof(their_addr);
+	
+    if ((numbytes = recvfrom(sockfd, buf, buf_size , 0,(struct sockaddr *)&their_addr, &addr_len)) == -1) 
+	{
+        perror("recvfrom");
+        return -1;
+    }
+    *src_ip = ((struct sockaddr_in *)&their_addr)->sin_addr.s_addr;	
+    *src_port = ((struct sockaddr_in *)&their_addr)->sin_port;
+    return numbytes;
+}
+
+// send udp packet
+int udp_socket_send(int sockfd, uint32_t addr, uint16_t port, char *data, int datalen)
+{
+    struct sockaddr_in dst_addr; /* connector's address information */
+    dst_addr.sin_family = AF_INET; /* host byte order */
+    dst_addr.sin_port = port; /* short, network byte order */
+    dst_addr.sin_addr.s_addr = addr;
+    bzero(&(dst_addr.sin_zero), 8); /* zero the rest of the struct */
+	int to_send_len=datalen;
+	int already_sended_len=0;
+	while(to_send_len>0)
+	{
+		already_sended_len=sendto(sockfd,data,
+								to_send_len-already_sended_len,
+								0,
+								(struct sockaddr *)&(dst_addr),
+								sizeof(dst_addr));
+		if(already_sended_len==-1)
+		{
+			if((EAGAIN == errno)||( EINTR == errno )|| (EWOULDBLOCK==errno))
+			{
+				continue;
+			}
+			else
+			{
+				return -1;
+			}
+		}
+		to_send_len-=already_sended_len;						
+	}
+    return already_sended_len;
+}
+
+int create_recv_udp_socket(uint16_t port)
+{
+    int sockfd = socket(AF_INET, SOCK_DGRAM, 0);
+    if (-1 == sockfd) 
+	{
+        perror("listener: socket");
+        return -1;
+    }
+    struct sockaddr_in my_addr; 			/* my address information */
+    my_addr.sin_family = AF_INET; 			/* host byte order */
+    my_addr.sin_port = port; 				/* short, network byte order */
+    my_addr.sin_addr.s_addr = INADDR_ANY; 	/* auto-fill with my IP */
+    bzero(&(my_addr.sin_zero), 8); 			/* zero the rest of the struct */
+
+    if (bind(sockfd, (struct sockaddr *)&my_addr, sizeof(struct sockaddr)) == -1) 
+	{
+        perror("listener: bind");
+        close(sockfd);
+        return -1;
+    }   
+    return sockfd;
+}
+
+void* thread_hard_keepalive(void *param)
+{
+	char		buf[1500] = {0};
+	char		discriminator_temp[ID_SIZE] = {0};
+	bfd_port_t*	bfd_port = (bfd_port_t*)param;
+	int			size = 0;
+	uint32_t	src_ip = 0;	
+	uint16_t	src_port = 0;	
+	int			send_rec = 0;
+	fd_set 		rset;
+	int			recv_pkt_sd = create_recv_udp_socket(htons(bfd_port->recv_port));
+	
+	if(-1==recv_pkt_sd)
+	{
+		printf("hard_keepalive create socket error.\n");		
+		return NULL;
+	}
+
+	while(1)
+	{		
+		FD_ZERO(&rset);
+		FD_SET(recv_pkt_sd,&rset);
+		if(-1==select(recv_pkt_sd+1,&rset,NULL,NULL,NULL))
+		{			
+			continue;
+		}
+		if(FD_ISSET(recv_pkt_sd, &rset))
+		{
+			size = udp_socket_recv(recv_pkt_sd, &src_ip, &src_port, (unsigned char*)buf, sizeof(buf));			
+			if(size>0)
+			{
+				/*交换discriminator*/
+				memcpy(discriminator_temp, buf+MY_ID_OFFSET, ID_SIZE);
+				memcpy(buf+MY_ID_OFFSET, buf+YOUR_ID_OFFSET, ID_SIZE);
+				memcpy(buf+YOUR_ID_OFFSET, discriminator_temp, ID_SIZE);
+				/*发送队列state状态*/
+				int state = 0;
+				for(int i=0;i<g_frag_cfg.bfd_down_num;i++)
+				{
+					state &= getbit(g_frag_cfg.bfd_down_stat,i);
+				}
+				if(state)
+				{
+					/*STATE_DOWN 2bit:  0 1*/
+					clrbit(((bfd_header_t*)buf
)->flags,8);
+					setbit(((bfd_header_t*)buf
)->flags,7);
+					printf("wait_queue is overflow, app is down.\n");
+					MESA_handle_runtime_log(g_frag_run.logger, RLOG_LV_FATAL, FRAG_REASSEMBLY_MODULE_NAME, 
+											"{%s:%d} wait_queue is overflow, app is down.", 
+											__FILE__,__LINE__);
+				}
+				else
+				{
+					/*STATE_UP 2bit:  1 1*/
+					setbit(((bfd_header_t*)buf
)->flags,8);
+					setbit(((bfd_header_t*)buf
)->flags,7);
+				}
+				send_rec = udp_socket_send(recv_pkt_sd,
+												src_ip,
+												src_port,
+												(char*)buf,size);
+				if(-1==send_rec)
+				{
+					printf("hard_keepalive send pkt error.\n");	
+				}
+			}
+		}
+		else
+		{
+			continue;
+		}
+	}
+	
+	return NULL;
+}
+
+int hard_keepalive_run(void* bfd_port)
+{
+	pthread_t	 	thread_desc;
+	pthread_attr_t 	attr;
+
+	memset(&thread_desc, 0, sizeof(thread_desc));
+	memset(&attr, 0, sizeof(attr));	
+	
+	if(0 != pthread_attr_init(&(attr))) 
+    {
+		return -1;
+	}
+	if(0 != pthread_attr_setdetachstate(&(attr), PTHREAD_CREATE_DETACHED)) 
+    {		
+		return -1;
+	}
+	if(0 != pthread_create(&(thread_desc), &(attr), thread_hard_keepalive, (void*)bfd_port)) 
+    {
+		pthread_attr_destroy(&(attr));
+		return -1;
+	}
+	pthread_attr_destroy(&(attr));
+	return 0;
+}
+
diff --git a/src/hard_keepalive.h b/src/hard_keepalive.h
index 7eaa7d3..22f08c2 100644
--- a/src/hard_keepalive.h
+++ b/src/hard_keepalive.h
@@ -10,10 +10,15 @@ typedef struct bfd_port_s
 #define	MY_ID_OFFSET	4
 #define	YOUR_ID_OFFSET	8
 #define	ID_SIZE			4
+
+#define setbit(x,y)  x|=(1<<y)
+#define clrbit(x,y)  x&=~(1<<y)
+#define getbit(x,y)  ((x) >> (y)&1)
+
 typedef struct bfd_header_s
 {
     unsigned char version_diag;
-    unsigned char flags;
+    unsigned char flags;				/*flag前2bit是state*/
     unsigned char detect_time_multiplier;
     unsigned char length;
     unsigned char my_discriminator[4]; /* 业?潞? 虏虏芒*/
diff --git a/src/log.c b/src/log.c
index 1439e38..c0997f9 100644
--- a/src/log.c
+++ b/src/log.c
@@ -194,23 +194,25 @@ void* thread_stat_output(void *param)
 	
 	char		buf[32] = {0};
 	int 		send_dest_num = 0;
-#if K_PROJECT	
-	send_dest_num = g_frag_cfg.send_dest_udp_ip_num;
-	for(uint32_t m=0;m<g_frag_cfg.send_dest_udp_ip_num;m++)
-	{		
-		inet_ntop(AF_INET, &g_frag_cfg.send_dest_udp_iplist[m], buf, sizeof(buf));
-		g_frag_stat.sendlog_line_id[2*m]=FS_register(g_frag_stat.fs_handle,FS_STYLE_LINE,FS_CALC_CURRENT, "udp_send");
-		g_frag_stat.sendlog_line_id[2*m+1]=FS_register(g_frag_stat.fs_handle,FS_STYLE_LINE,FS_CALC_CURRENT, "lq_count");
-	}	
-#else		
-	send_dest_num = g_frag_cfg.send_dest_addr_num;
-	for(uint32_t m=0;m<g_frag_cfg.send_dest_addr_num;m++)
+	if(g_frag_cfg.send_udp_switch)
 	{
-		g_frag_stat.sendlog_line_id[2*m]=FS_register(g_frag_stat.fs_handle,FS_STYLE_LINE,FS_CALC_CURRENT, (char*)g_frag_cfg.send_dest_addr[m].sun_path);
-        g_frag_stat.sendlog_line_id[2*m+1]=FS_register(g_frag_stat.fs_handle,FS_STYLE_LINE,FS_CALC_CURRENT, "lq_count");
-	}	
-#endif
-
+		send_dest_num = g_frag_cfg.send_dest_udp_ip_num;
+		for(uint32_t m=0;m<g_frag_cfg.send_dest_udp_ip_num;m++)
+		{		
+			inet_ntop(AF_INET, &g_frag_cfg.send_dest_udp_iplist[m], buf, sizeof(buf));
+			g_frag_stat.sendlog_line_id[2*m]=FS_register(g_frag_stat.fs_handle,FS_STYLE_LINE,FS_CALC_CURRENT, "udp_send");
+			g_frag_stat.sendlog_line_id[2*m+1]=FS_register(g_frag_stat.fs_handle,FS_STYLE_LINE,FS_CALC_CURRENT, "lq_count");
+		}
+	}
+	else
+	{	
+		send_dest_num = g_frag_cfg.send_dest_addr_num;
+		for(uint32_t m=0;m<g_frag_cfg.send_dest_addr_num;m++)
+		{
+			g_frag_stat.sendlog_line_id[2*m]=FS_register(g_frag_stat.fs_handle,FS_STYLE_LINE,FS_CALC_CURRENT, (char*)g_frag_cfg.send_dest_addr[m].sun_path);
+	        g_frag_stat.sendlog_line_id[2*m+1]=FS_register(g_frag_stat.fs_handle,FS_STYLE_LINE,FS_CALC_CURRENT, "lq_count");
+		}
+	}
 	memset(buf, 0, sizeof(buf));
 	for(uint32_t m=0;m<g_frag_cfg.special_media_wins_port_num;m++)
 	{
@@ -369,6 +371,17 @@ void get_rssb_queuelog_count()
 	{
 		frag_rssb.sysinfo_stat[RSSB_WAIT_QUEUE][QUEUE_CURRENT] += MESA_lqueue_get_count(frag_rssb.wait_lq[i]);
 	}
+	double queue_usage = (double)frag_rssb.sysinfo_stat[RSSB_WAIT_QUEUE][QUEUE_CURRENT]/(double)(g_frag_cfg.thread_num*frag_rssb.wait_lq_num)*100;
+	if(queue_usage < g_frag_cfg.bfd_threshold)
+	{
+		clrbit(g_frag_cfg.bfd_down_stat,g_frag_cfg.bfd_down_index);
+	}
+	else
+	{
+		setbit(g_frag_cfg.bfd_down_stat,g_frag_cfg.bfd_down_index);
+	}
+	g_frag_cfg.bfd_down_index++;
+	g_frag_cfg.bfd_down_index = g_frag_cfg.bfd_down_index%g_frag_cfg.bfd_down_num;	
 }
 
 void get_rssb_hashlog_count()
diff --git a/src/log.h b/src/log.h
index eda62e4..7bf62e0 100644
--- a/src/log.h
+++ b/src/log.h
@@ -21,6 +21,9 @@ typedef long atomic_t;
 #define atomic_set(x,y)	((*(x))=(y))
 #endif 
 
+#define setbit(x,y)  x|=(1<<y)
+#define clrbit(x,y)  x&=~(1<<y)
+
 /*********************************************debug log type***********************************/
 typedef enum
 {
diff --git a/src/main.c b/src/main.c
index 8191aab..a7156d9 100644
--- a/src/main.c
+++ b/src/main.c
@@ -42,9 +42,9 @@ const char* frag_rssb_version = "2018-08-13T09:00:00";
 const char* frag_rssb_version_time = "2018-08-13T09:00:00";
 const char* frag_rssb_version_des = "MESA@iie rssb_maskey";
 
-int FRAG_RSSB_VERSION_1_0_20190121 = 0;
-const char* frag_rssb_version_time_in = "2019-01-21";
-const char* frag_rssb_version_des_in = "support youtube";
+int FRAG_RSSB_VERSION_1_0_20190315 = 0;
+const char* frag_rssb_version_time_in = "2019-03-15";
+const char* frag_rssb_version_des_in = "support udp socket";
 void frag_rssb_history()
 {
 	//2015.11.15  v1.0  create the project	
@@ -229,6 +229,7 @@ void frag_rssb_history()
    //2018.12.11	   v4.0//resp_checkresult_search_media_cb add K_PROJECT,and delete send_json_log      
    //2018.12.24	v4.0//send_voip_full_json_log add survey judgement for K 
    //2019.01.21	   v4.0//support youtube; update req_frag and template
+   //2019.03.15	   v4.0//keepalive; support udp send   
 }
 
 frag_rssb_parameter_t 		g_frag_run;
@@ -767,6 +768,8 @@ int read_conf_and_init(const char* filename)
 	MESA_load_profile_uint_def(filename, "WLB", "wlb_report_interval", (unsigned int*)&g_frag_cfg.wlb_report_interval,10);		
 	MESA_load_profile_uint_def(filename, "WLB", "enable_override", (unsigned int*)&g_frag_cfg.enable_override,0);	
 	MESA_load_profile_uint_def(filename, "WLB", "bfd_recv_port", (unsigned int*)&g_frag_cfg.bfd_recv_port,0);	
+	MESA_load_profile_short_def(filename, "WLB", "down_threshold", (short*)&g_frag_cfg.bfd_threshold,90);		
+	MESA_load_profile_short_def(filename, "WLB", "down_num", (short*)&g_frag_cfg.bfd_down_num,20);		
 
 	/*send bizman :粗拼装往前端发数据，监听响应端口*/	
 	MESA_load_profile_short_def(filename, "NETWORK", "BizmanAckPort", (short*)&g_frag_cfg.bizman_ack_port,22084);		
@@ -906,7 +909,8 @@ int read_conf_and_init(const char* filename)
 		}
 	}	
 
-	/*udp socket : send av data by udp socket*/	
+	/*udp socket : send av data by udp socket*/		
+	MESA_load_profile_short_def(filename, "NETWORK", "UdpSendSwitch", (short*)&g_frag_cfg.send_udp_switch, 0);	
 	uint32_t*	send_udp_ip_serial = NULL;
 	MESA_load_profile_uint_def(filename, "NETWORK", "UdpSendIPNum", (uint32_t*)&g_frag_cfg.send_dest_udp_ip_num,0);		
 	memset(conf_buf,0,sizeof(conf_buf));
@@ -933,7 +937,6 @@ int read_conf_and_init(const char* filename)
 		}
 	}
 	
-#if K_PROJECT
 	if(g_frag_cfg.send_dest_udp_ip_num>0)
 	{
 		for(i=0; i<g_frag_cfg.thread_num; i++)
@@ -948,7 +951,6 @@ int read_conf_and_init(const char* filename)
 			}
 		}
 	}
-#endif
 		
 	/*udp socket : data msg send to windows system*/	
 	uint32_t*   wins_ip_serial = NULL;
diff --git a/src/main.h b/src/main.h
index 2065cc9..1c89d12 100644
--- a/src/main.h
+++ b/src/main.h
@@ -175,7 +175,7 @@ typedef struct frag_rssb_configure_s
 	struct sockaddr_un			send_dest_addr[DEST_MAXNUM];			//unix socket : send frag to dest
 
 	/*send data by udp*/
-	uint16_t					send_dest_udp_port[DEST_MAXNUM];						//udp socket : send frag to dest	
+	uint16_t					send_dest_udp_port[DEST_MAXNUM];		//udp socket : send frag to dest	
 	uint32_t					send_dest_udp_ip_num;
 	in_addr_t					send_dest_udp_iplist[DEST_MAXNUM];		//udp socket : send frag to dest	
 
@@ -240,7 +240,12 @@ typedef struct frag_rssb_configure_s
 	uint32_t                    health_check_port;
 	int16_t						save_media;
 	
-	uint32_t                    bfd_recv_port;
+	uint64_t                    bfd_down_stat;	/*每一个bit是一次监测状态，最多监测最近的64次*/
+	uint32_t                    bfd_recv_port;	
+	int16_t						bfd_down_index;	/*当前第几次*/
+	int16_t						bfd_threshold;
+	int16_t						bfd_down_num;
+	int16_t						send_udp_switch;	
 }frag_rssb_configure_t;
 
 typedef struct frag_rssb_status_s