diff --git a/inc/Maat_rule.h b/inc/Maat_rule.h
index d5e4621..0163650 100644
--- a/inc/Maat_rule.h
+++ b/inc/Maat_rule.h
@@ -165,8 +165,9 @@ enum MAAT_INIT_OPT
 int Maat_set_feather_opt(Maat_feather_t feather,enum MAAT_INIT_OPT  type,const void* value,int size);
 enum MAAT_STATE_OPT
 {
-	MAAT_STATE_VERSION=1,			//Get current maat version. VALUE is long long, SIZE=sizeof(long long). 
-	MAAT_STATE_LAST_UPDATING_TABLE	//Query at Maat_finish_callback_t to determine whether this table is the last one to update. VALUE is interger, SIZE=sizeof(int), 1:yes, 0: no
+	MAAT_STATE_VERSION=1,			//Get current maat version, if maat is in update progress, the updating version is returned. VALUE is long long, SIZE=sizeof(long long). 
+	MAAT_STATE_LAST_UPDATING_TABLE,	//Query at Maat_finish_callback_t to determine whether this table is the last one to update. VALUE is interger, SIZE=sizeof(int), 1:yes, 0: no
+	MAAT_STATE_IN_UPDATING
 };
 int Maat_read_state(Maat_feather_t feather, enum MAAT_STATE_OPT  type, void* value, int size);
 
diff --git a/src/entry/Maat_api.cpp b/src/entry/Maat_api.cpp
index 803ee46..a8ccf77 100644
--- a/src/entry/Maat_api.cpp
+++ b/src/entry/Maat_api.cpp
@@ -2260,6 +2260,20 @@ int Maat_read_state(Maat_feather_t feather,enum MAAT_STATE_OPT  type, void* valu
 		case MAAT_STATE_LAST_UPDATING_TABLE:
 			*int_val=_feather->is_last_plugin_table_updating;
 			break;
+		case MAAT_STATE_IN_UPDATING:
+			if(size!=sizeof(int))
+			{
+				return -1;
+			}
+			if(0==pthread_mutex_trylock(&(_feather->backgroud_update_mutex)))
+			{
+				*int_val=0;
+				pthread_mutex_unlock(&(_feather->backgroud_update_mutex));
+			}
+			else
+			{
+				*int_val=1;
+			}
 		default:
 			return -1;
 			break;
diff --git a/src/entry/Maat_command.cpp b/src/entry/Maat_command.cpp
index 8b6f188..c3f156d 100644
--- a/src/entry/Maat_command.cpp
+++ b/src/entry/Maat_command.cpp
@@ -1213,21 +1213,21 @@ void _exec_serial_rule(redisContext* ctx,	long long version, struct serial_rule_
 	return;
 }
 
-int exec_serial_rule(redisContext* ctx,struct serial_rule_t* s_rule,int serial_rule_num, long long server_time, void* logger)
+int exec_serial_rule(redisContext* ctx,struct serial_rule_t* s_rule, unsigned int serial_rule_num, long long server_time, void* logger)
 {
-	int max_redis_batch=1*1024,batch_cnt=0;
-	int success_cnt=0,j=0,renew_allowed=0,last_failed=-1;
+	unsigned int max_redis_batch=1*1024, batch_cnt=0;
+	int renew_allowed=0,last_failed=-1;
 	redisReply*transaction_reply=NULL,*p=NULL;
 	unsigned int i=0;
 
-	unsigned int multi_cmd_cnt=0;
+	unsigned int multi_cmd_cnt=0, success_cnt=0;
 	const int MAX_REDIS_OP_PER_SRULE=8;
 	unsigned int max_multi_cmd_num=MAX_REDIS_OP_PER_SRULE*serial_rule_num+2;// 2 for operation in _exec_serial_rule_end()
 	
 	struct expected_reply_t *expected_reply=(struct expected_reply_t*)calloc(sizeof(struct expected_reply_t), max_multi_cmd_num);
 	long long new_version=0;
 	int renew_num=0,ret=0;
-	for(i=0;i<(unsigned int)serial_rule_num;i++)
+	for(i=0;i<serial_rule_num;i++)
 	{
 		if(s_rule[i].op==MAAT_OP_RENEW_TIMEOUT)
 		{
@@ -1243,7 +1243,7 @@ int exec_serial_rule(redisContext* ctx,struct serial_rule_t* s_rule,int serial_r
 	}
 	while(success_cnt<serial_rule_num)
 	{
-		batch_cnt=MIN(serial_rule_num-success_cnt,max_redis_batch);
+		batch_cnt=MIN(serial_rule_num-success_cnt, max_redis_batch);
 		_exec_serial_rule(ctx,new_version,s_rule+success_cnt,batch_cnt,expected_reply, &multi_cmd_cnt,success_cnt,renew_allowed);
 		assert(multi_cmd_cnt<max_multi_cmd_num);
 		success_cnt+=batch_cnt;
@@ -1262,11 +1262,11 @@ int exec_serial_rule(redisContext* ctx,struct serial_rule_t* s_rule,int serial_r
 			{
 				continue;
 			}
-			assert(j<serial_rule_num);
+			assert(i<(unsigned int)serial_rule_num);
 			MESA_handle_runtime_log(logger,RLOG_LV_FATAL,maat_command 
 					,"%s %s %d failed, rule id maybe conflict or not exist."
-					,rm_op_str[s_rule[j].op]
-					,s_rule[j].table_name,s_rule[j].rule_id);
+					,rm_op_str[s_rule[i].op]
+					,s_rule[i].table_name,s_rule[i].rule_id);
 			success_cnt--;
 			last_failed=expected_reply[i].srule_seq;
 		}
diff --git a/src/inc_internal/Maat_rule_internal.h b/src/inc_internal/Maat_rule_internal.h
index dfe551f..00b5529 100644
--- a/src/inc_internal/Maat_rule_internal.h
+++ b/src/inc_internal/Maat_rule_internal.h
@@ -468,7 +468,7 @@ int plugin_EX_data_free(const struct Maat_table_desc* plugin_table, const char*
 
 void set_serial_rule(struct serial_rule_t* rule,enum MAAT_OPERATION op,int rule_id,int label_id,const char* table_name,const char* line, long long timeout);
 void empty_serial_rules(struct serial_rule_t* rule);
-int exec_serial_rule(redisContext* ctx,struct serial_rule_t* s_rule,int serial_rule_num, long long server_time, void* logger);
+int exec_serial_rule(redisContext* ctx,struct serial_rule_t* s_rule,unsigned int serial_rule_num, long long server_time, void* logger);
 long long redis_server_time(redisContext* ctx);
 redisContext * connect_redis(const char*redis_ip, int redis_port, int redis_db, void* logger);
 char* md5_file(const char* filename, char* md5string);
diff --git a/test/maat_demo.cpp b/test/maat_demo.cpp
index b536059..c4ffd4f 100644
--- a/test/maat_demo.cpp
+++ b/test/maat_demo.cpp
@@ -675,35 +675,36 @@ int test_table_conjunction(Maat_feather_t feather,const char* table_name,const c
 	}
 	return 0;
 }
-#define	TEST_CMD_LINE_NUM	4
+#define	TEST_CMD_LINE_NUM	200*1000
 void test_set_cmd_line(Maat_feather_t feather)
 {
-	const struct Maat_line_t *p_line[TEST_CMD_LINE_NUM];
-	struct Maat_line_t line_rule[TEST_CMD_LINE_NUM];
-	char table_line[TEST_CMD_LINE_NUM][128];
+	struct Maat_line_t **p_line=(struct Maat_line_t **)calloc(sizeof(struct Maat_line_t *), TEST_CMD_LINE_NUM);
+	struct Maat_line_t *line_rule=(struct Maat_line_t *)calloc(sizeof(struct Maat_line_t), TEST_CMD_LINE_NUM);
 	int i=0;
+	const char* line="1\t192.168.0.1\t4444444444\t1";
 	memset(&line_rule,0,sizeof(line_rule));
 	for(i=0;i<TEST_CMD_LINE_NUM;i++)
 	{
 		line_rule[i].label_id=0;
 		line_rule[i].rule_id=(int)Maat_cmd_incrby(feather,"TEST_PLUG_SEQ", 1);
 		line_rule[i].table_name="QD_ENTRY_INFO";
-		snprintf(table_line[i],sizeof(table_line[i]),"1\t192.168.0.1\t%d\t1",100+i);
-		line_rule[i].table_line=table_line[i];
+		line_rule[i].table_line=line;
+//		asprintf(&(line_rule[i].table_line),"1\t192.168.0.1\t%d\t1",100+i);
 		line_rule[i].expire_after=0;
 		p_line[i]=line_rule+i;
 	}
 	
 
-	Maat_cmd_set_lines(feather, p_line,TEST_CMD_LINE_NUM, MAAT_OP_ADD);
+	Maat_cmd_set_lines(feather,(const struct Maat_line_t **)p_line,TEST_CMD_LINE_NUM, MAAT_OP_ADD);
 	usleep(WAIT_FOR_EFFECTIVE_US);
 	
 	for(i=0;i<TEST_CMD_LINE_NUM;i++)
 	{
 		line_rule[i].table_line=NULL;
 	}
-	Maat_cmd_set_lines(feather, p_line,TEST_CMD_LINE_NUM, MAAT_OP_DEL);
-
+	Maat_cmd_set_lines(feather, (const struct Maat_line_t **)p_line,TEST_CMD_LINE_NUM, MAAT_OP_DEL);
+	free(p_line);
+	free(line_rule);
 
 	return;
 }
diff --git a/test/test_maatframe.cpp b/test/test_maatframe.cpp
index 4a5c084..4f00033 100644
--- a/test/test_maatframe.cpp
+++ b/test/test_maatframe.cpp
@@ -38,6 +38,19 @@ int g_iThreadNum=4;
 const char* table_info_path="./table_info.conf";
 int scan_interval_ms=1;
 int effective_interval_ms=0;
+void wait_for_cmd_effective(Maat_feather_t feather, long long version_before)
+{
+	long long	version_after=version_before;
+	int is_updating=1;
+	while(is_updating||version_before==version_after)
+	{
+		Maat_read_state(feather,MAAT_STATE_IN_UPDATING, &is_updating, sizeof(is_updating));
+		Maat_read_state(feather,MAAT_STATE_VERSION, &version_after, sizeof(version_after));
+
+		usleep(1000*100);//waiting for commands go into effect
+	}
+
+}
 
 void scan_with_old_or_new_cfg(Maat_feather_t feather, int hit_old)
 {
@@ -1033,6 +1046,95 @@ int del_command(Maat_feather_t feather,int config_id)
 	Maat_free_cmd(cmd);
 	return 0;
 }
+TEST_F(MaatCmdTest, SetIP)
+{
+	struct Maat_cmd_t* cmd=NULL;
+	struct Maat_rule_t rule;
+	int config_id=0,timeout=4;
+	long long version_before=0;
+	const char* region_table="IP_CONFIG";
+	struct Maat_region_t region;
+	int group_num=1,ret=0;
+	memset(&rule,0,sizeof(rule));
+	Maat_feather_t feather=MaatCmdTest::_shared_feather;
+	
+	//MUST acquire by Maat_cmd_incrby to guarantee a unique compile ID.
+	config_id=(int)Maat_cmd_incrby(feather, "TEST_SEQ", 1);
+	rule.config_id=config_id;
+	
+	strcpy(rule.service_defined,"maat_command");
+	//MUST acqire by function, because Maat_cmd_t has some hidden members.
+	cmd=Maat_create_cmd(&rule, group_num);
+	cmd->expire_after=timeout;
+	cmd->label_id=0;	//no lable
+	memset(&region,0,sizeof(region));
+	region.region_type=REGION_IP;
+	region.table_name=region_table;
+	region.ip_rule.addr_type=ADDR_TYPE_IPv4;
+	region.ip_rule.direction=ADDR_DIR_DOUBLE;
+	region.ip_rule.src_ip="172.0.0.1";
+	region.ip_rule.mask_src_ip="255.255.255.255";
+	region.ip_rule.src_port=53331;
+	region.ip_rule.mask_src_port=0;//means any port should hit.
+	
+	region.ip_rule.dst_ip="172.0.0.2";
+	region.ip_rule.mask_dst_ip="255.255.255.255";
+	region.ip_rule.dst_port=80;
+	region.ip_rule.mask_dst_port=65535;
+	region.ip_rule.protocol=0;//means any protocol should hit.
+	Maat_add_region2cmd(cmd, 0, &region);
+
+	ret=Maat_read_state(feather,MAAT_STATE_VERSION, &version_before, sizeof(version_before));
+	EXPECT_EQ(ret, 0);
+	ret=Maat_cmd(feather, cmd, MAAT_OP_ADD);
+	EXPECT_GE(ret, 0);
+	Maat_free_cmd(cmd);
+	cmd=NULL;
+	
+	wait_for_cmd_effective(feather, version_before);
+	struct ipaddr ipv4_addr;
+	struct stream_tuple4_v4 v4_addr;
+	ipv4_addr.addrtype=ADDR_TYPE_IPV4;
+	inet_pton(AF_INET,region.ip_rule.src_ip,&(v4_addr.saddr));
+	v4_addr.source=htons(region.ip_rule.src_port+1);//Not use the exactly port for testing port mask.
+	inet_pton(AF_INET,region.ip_rule.dst_ip,&(v4_addr.daddr));
+	v4_addr.dest=htons(region.ip_rule.dst_port);
+	ipv4_addr.v4=&v4_addr;
+	
+	int table_id=0;
+	struct Maat_rule_t result;
+	memset(&result, 0, sizeof(result));
+	scan_status_t mid=NULL;
+	table_id=Maat_table_register(feather,region_table);
+	ASSERT_GE(table_id, 0);
+
+	ret=Maat_scan_proto_addr(feather,table_id,&ipv4_addr,6,&result,1, &mid,0);
+	EXPECT_EQ(ret, 1);
+	EXPECT_EQ(result.config_id, config_id);
+
+	Maat_clean_status(&mid);
+	
+	ret=Maat_read_state(feather,MAAT_STATE_VERSION, &version_before, sizeof(version_before));
+
+	//reset timeout.
+	cmd=Maat_create_cmd(&rule, 0);
+	cmd->expire_after=10;
+	ret=Maat_cmd(feather, cmd, MAAT_OP_RENEW_TIMEOUT);
+	EXPECT_EQ(ret ,1);
+	
+	wait_for_cmd_effective(feather, version_before);
+	
+	Maat_free_cmd(cmd);
+	cmd=NULL;
+
+	ret=Maat_scan_proto_addr(feather,table_id,&ipv4_addr,6,&result,1, &mid,0);
+	EXPECT_EQ(ret, 1);
+
+	Maat_clean_status(&mid);
+
+	return;
+
+}
 
 TEST_F(MaatCmdTest, SetExpr)
 {
@@ -1107,6 +1209,56 @@ TEST_F(MaatCmdTest, SetExpr)
 						&mid, 0);
 	EXPECT_EQ(ret, 0);
 }
+
+TEST_F(MaatCmdTest, SetExpr20w)
+{
+	const int CMD_EXPR_NUM=200*1000;
+	const char* table_name="HTTP_URL";
+	
+	const char* keywords1="Hiredis";
+	const char* keywords2="C Client";
+	char escape_buff1[256],escape_buff2[256];
+	char keywords[256];
+
+	int label_id=5210, config_id=0,ret=0, output_id_cnt=0;
+	Maat_feather_t feather=MaatCmdTest::_shared_feather;
+	long long version_before=0;
+	ret=Maat_read_state(feather,MAAT_STATE_VERSION, &version_before, sizeof(version_before));
+	
+	Maat_str_escape(escape_buff1, sizeof(escape_buff1),keywords1);
+	Maat_str_escape(escape_buff2, sizeof(escape_buff2),keywords2);
+	snprintf(keywords,sizeof(keywords),"%s&%s",escape_buff1,escape_buff2);
+	
+	config_id=(int)Maat_cmd_incrby(feather, "TEST_SEQ", CMD_EXPR_NUM);
+	int i=0;
+	for(i=0; i<CMD_EXPR_NUM;i++)
+	{
+		test_add_expr_command(feather,table_name,config_id-i, 0, label_id, keywords);
+	}
+	ret=Maat_cmd_commit(feather);
+	EXPECT_TRUE(ret>=0);
+	wait_for_cmd_effective(feather, version_before);
+	struct Maat_cmd_t* cmd=NULL;
+	struct Maat_rule_t rule;
+	memset(&rule,0,sizeof(rule));
+	int *output_ids=(int*)malloc(sizeof(int)*CMD_EXPR_NUM);
+	output_id_cnt=Maat_cmd_select(feather,label_id, output_ids, CMD_EXPR_NUM);
+	EXPECT_EQ(output_id_cnt, CMD_EXPR_NUM);
+	for(i=0; i<CMD_EXPR_NUM;i++)
+	{
+		memset(&rule,0,sizeof(rule));
+		rule.config_id=output_ids[i];
+		cmd=Maat_create_cmd(&rule, 0);
+		ret=Maat_cmd_append(feather, cmd, MAAT_OP_DEL);
+		EXPECT_EQ(ret, 0);
+		Maat_free_cmd(cmd);
+	}
+	ret=Maat_cmd_commit(feather);
+	
+	EXPECT_EQ(ret, CMD_EXPR_NUM);
+	free(output_ids);
+}
+
 TEST_F(MaatCmdTest, SetLines)
 {
 	const int TEST_CMD_LINE_NUM=4;
@@ -1142,95 +1294,46 @@ TEST_F(MaatCmdTest, SetLines)
 
 	return;
 }
-TEST_F(MaatCmdTest, SetIP)
+TEST_F(MaatCmdTest, SetLines20w)
 {
-	struct Maat_cmd_t* cmd=NULL;
-	struct Maat_rule_t rule;
-	int config_id=0,timeout=4;
-	long long version_before=0,version_after=0;
-	const char* region_table="IP_CONFIG";
-	struct Maat_region_t region;
-	int group_num=1,ret=0;
-	memset(&rule,0,sizeof(rule));
+	const int TEST_CMD_LINE_NUM=200*1000;
 	Maat_feather_t feather=MaatCmdTest::_shared_feather;
+
+	struct Maat_line_t **p_line=(struct Maat_line_t **)calloc(sizeof(struct Maat_line_t *), TEST_CMD_LINE_NUM);
+	struct Maat_line_t *line_rule=(struct Maat_line_t *)calloc(sizeof(struct Maat_line_t), TEST_CMD_LINE_NUM);
+	int i=0;
+	const char* line="1\t192.168.0.1\t4444444444\t1";
+	int seq=(int)Maat_cmd_incrby(feather,"TEST_PLUG_SEQ", TEST_CMD_LINE_NUM);
+	for(i=0;i<TEST_CMD_LINE_NUM;i++)
+	{
+		line_rule[i].label_id=0;
+		line_rule[i].rule_id=seq-i;
+		line_rule[i].table_name="QD_ENTRY_INFO";
+		line_rule[i].table_line=line;
+//		asprintf(&(line_rule[i].table_line),"1\t192.168.0.1\t%d\t1",100+i);
+		line_rule[i].expire_after=0;
+		p_line[i]=line_rule+i;
+	}
 	
-	//MUST acquire by Maat_cmd_incrby to guarantee a unique compile ID.
-	config_id=(int)Maat_cmd_incrby(feather, "TEST_SEQ", 1);
-	rule.config_id=config_id;
+	long long version_before=0;
+	Maat_read_state(feather,MAAT_STATE_VERSION, &version_before, sizeof(version_before));
+
+	Maat_cmd_set_lines(feather,(const struct Maat_line_t **)p_line,TEST_CMD_LINE_NUM, MAAT_OP_ADD);
 	
-	strcpy(rule.service_defined,"maat_command");
-	//MUST acqire by function, because Maat_cmd_t has some hidden members.
-	cmd=Maat_create_cmd(&rule, group_num);
-	cmd->expire_after=timeout;
-	cmd->label_id=0;	//no lable
-	memset(&region,0,sizeof(region));
-	region.region_type=REGION_IP;
-	region.table_name=region_table;
-	region.ip_rule.addr_type=ADDR_TYPE_IPv4;
-	region.ip_rule.direction=ADDR_DIR_DOUBLE;
-	region.ip_rule.src_ip="172.0.0.1";
-	region.ip_rule.mask_src_ip="255.255.255.255";
-	region.ip_rule.src_port=53331;
-	region.ip_rule.mask_src_port=0;//means any port should hit.
+	wait_for_cmd_effective(feather, version_before);
 	
-	region.ip_rule.dst_ip="172.0.0.2";
-	region.ip_rule.mask_dst_ip="255.255.255.255";
-	region.ip_rule.dst_port=80;
-	region.ip_rule.mask_dst_port=65535;
-	region.ip_rule.protocol=0;//means any protocol should hit.
-	Maat_add_region2cmd(cmd, 0, &region);
-
-	ret=Maat_read_state(feather,MAAT_STATE_VERSION, &version_before, sizeof(version_before));
-	EXPECT_EQ(ret, 0);
-	ret=Maat_cmd(feather, cmd, MAAT_OP_ADD);
-	EXPECT_GE(ret, 0);
-	Maat_free_cmd(cmd);
-	cmd=NULL;
-
-	//TEST if the command go into effective.
-	usleep(WAIT_FOR_EFFECTIVE_US);	//waiting for commands go into effect
-	
-	ret=Maat_read_state(feather,MAAT_STATE_VERSION, &version_after, sizeof(version_after));
-
-	struct ipaddr ipv4_addr;
-	struct stream_tuple4_v4 v4_addr;
-	ipv4_addr.addrtype=ADDR_TYPE_IPV4;
-	inet_pton(AF_INET,region.ip_rule.src_ip,&(v4_addr.saddr));
-	v4_addr.source=htons(region.ip_rule.src_port+1);//Not use the exactly port for testing port mask.
-	inet_pton(AF_INET,region.ip_rule.dst_ip,&(v4_addr.daddr));
-	v4_addr.dest=htons(region.ip_rule.dst_port);
-	ipv4_addr.v4=&v4_addr;
-	
-	int table_id=0;
-	struct Maat_rule_t result;
-	memset(&result, 0, sizeof(result));
-	scan_status_t mid=NULL;
-	table_id=Maat_table_register(feather,region_table);
-	ASSERT_GE(table_id, 0);
-
-	ret=Maat_scan_proto_addr(feather,table_id,&ipv4_addr,6,&result,1, &mid,0);
-	EXPECT_EQ(ret, 1);
-	EXPECT_EQ(result.config_id, config_id);
-
-	Maat_clean_status(&mid);
-	//reset timeout.
-	cmd=Maat_create_cmd(&rule, 0);
-	cmd->expire_after=10;
-	ret=Maat_cmd(feather, cmd, MAAT_OP_RENEW_TIMEOUT);
-	EXPECT_EQ(ret ,1);
-	
-	usleep(2*1000*1000+WAIT_FOR_EFFECTIVE_US);//wait for commands expired.
-	Maat_free_cmd(cmd);
-	cmd=NULL;
-
-	ret=Maat_scan_proto_addr(feather,table_id,&ipv4_addr,6,&result,1, &mid,0);
-	EXPECT_EQ(ret, 1);
-
-	Maat_clean_status(&mid);
+	for(i=0;i<TEST_CMD_LINE_NUM;i++)
+	{
+		line_rule[i].table_line=NULL;
+	}
+	Maat_cmd_set_lines(feather, (const struct Maat_line_t **)p_line,TEST_CMD_LINE_NUM, MAAT_OP_DEL);
+	free(p_line);
+	free(line_rule);
 
 	return;
-
 }
+
+
 int g_test_update_paused=0;
 void pause_update_test_entry_cb(int table_id,const char* table_line,void* u_para)
 {
diff --git a/tools/maat_redis_tool.cpp b/tools/maat_redis_tool.cpp
index 55b1913..0d21dbb 100644
--- a/tools/maat_redis_tool.cpp
+++ b/tools/maat_redis_tool.cpp
@@ -173,7 +173,7 @@ clean_up:
 }
 int count_line_num(const char* table_name,const char* line,void *u_para)
 {
-	(*((int *)u_para))++;
+	(*((unsigned int *)u_para))++;
 	return 0;
 }
 int line_idx=0;
@@ -221,7 +221,7 @@ int make_serial_rule(const char* table_name,const char* line,void *u_para)
 #define WORK_MODE_JSON	1
 int main(int argc, char * argv[])
 {
-	int oc=0,ret=0, i=0,success_cnt=0;
+	int oc=0,ret=0;
 	int model=0;
 	char redis_ip[64];
 	int redis_port=6379;
@@ -230,7 +230,7 @@ int main(int argc, char * argv[])
 	char dump_dir[128], json_file[128], tmp_iris_path[128];
 	strncpy(dump_dir,redis_dump_dir,sizeof(dump_dir));
 	redisContext * ctx=NULL;
-	int total_line_cnt=0;
+	unsigned int total_line_cnt=0, success_cnt=0, i=0;
 	int timeout=0;
 	FILE* json_fp=NULL;
 	cJSON *json=NULL, *tmp_obj=NULL;