ntp time polling get system time

1_6.h12_dev/ntp/timesync/.svn/entries

@@ -0,0 +1 @@
+12

1_6.h12_dev/ntp/timesync/.svn/format

@@ -0,0 +1 @@
+12

1_6.h12_dev/ntp/timesync/.svn/pristine/4e/4e8e67e9b1a17fb3548b6d602a4ef6aa6416ceaa.svn-base

@@ -0,0 +1,2 @@
+sudo ./server
+./client <server ip address>

1_6.h12_dev/ntp/timesync/.svn/pristine/69/6950178942c0db5d851dffe687891bd4c96e210f.svn-base

@@ -0,0 +1,20 @@
+.PHONY: all clean tags
+
+CFLAGS:=-Wall -O2
+
+all: client server
+
+server: server.c
+	$(CC) $(CFLAGS) $^ -o $@
+	strip -s $@
+
+client: client.c
+	$(CC) $(CFLAGS) $^ -o $@
+	strip -s $@
+
+tags:
+	ctags -R .
+
+clean:
+	-rm *.o client server
+

1_6.h12_dev/ntp/timesync/.svn/pristine/a5/a573b249f45d11b3d55fcef68ff7058872f74403.svn-base

@@ -0,0 +1,159 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <sys/time.h> /* gettimeofday() */
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netdb.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+#include <time.h> /* for time() and ctime() */
+
+/*
+ * rfc1305的ntp时间中，时间为64bit，记录1900年后的秒数（utc格式）
+ * 高32位是整数部分，低32位是小数部分*/
+#define UTC_NTP 2208988800U /* 1970 - 1900 */
+
+/* get Timestamp for NTP in LOCAL ENDIAN */
+void gettime64(uint32_t ts[])
+{
+	struct timeval tv;
+	gettimeofday(&tv, NULL);
+
+	ts[0] = tv.tv_sec + UTC_NTP;
+	ts[1] = (4294*(tv.tv_usec)) + ((1981*(tv.tv_usec))>>11);
+}
+
+int die(const char *msg)
+{
+	fputs(msg, stderr);
+	exit(-1);
+}
+
+int useage(const char *path)
+{
+	printf("Useage:\n\t%s <server address>\n", path);
+	return 1;
+}
+
+
+//开始连接服务器
+int open_connect(const char* server)
+{
+	int s;
+	struct addrinfo *saddr;
+
+	/* printf("Connecting to server: %s\n", server); */
+	s = socket(AF_INET, SOCK_DGRAM, 0);
+	if (s == -1) {
+		die("Can not create socket.\n");
+	}
+
+	if (0 != getaddrinfo(server, "123", NULL, &saddr)) {
+		die("Server address not correct.\n");
+	}
+
+	if (connect(s, saddr->ai_addr, saddr->ai_addrlen) != 0) {
+		die("Connect error\n");
+	}
+
+	freeaddrinfo(saddr);
+
+	return s;
+}
+
+//发送请求报文
+void request(int fd)
+{
+	unsigned char buf[48] = {0};
+	uint32_t tts[2]; /* Transmit Timestamp */
+
+	/* LI VN MODE = 00 100 011*/
+    /* MODE：3表示客户模式，4表示服务器模式*/
+	buf[0] = 0x23;
+
+	gettime64(tts);
+    //此处将Originate Timestamp设置在Transmit Timestamp处
+	(*(uint32_t *)&buf[40]) = htonl(tts[0]);
+	(*(uint32_t *)&buf[44])= htonl(tts[1]);
+	if (send(fd, buf, 48, 0) !=48 ) {
+		die("Send error\n");
+	}
+}
+
+//获得NTP应答报文
+void get_reply(int fd)
+{
+	unsigned char buf[48];
+	uint32_t *pt;
+	// uint32_t t_last_update[2]; /* Reference Timestamp @ Server */
+	uint32_t t1[2]; /* t1 = Originate Timestamp,即NTP请求报文离开发送端时发送端的本地时间  */
+	uint32_t t2[2]; /* t2 = Receive Timestamp @ Server,即NTP请求报文到达接收端时接收端的本地时间 */
+	uint32_t t3[2]; /* t3 = Transmit Timestamp @ Server,即应答报文离开应答者时应答者的本地时间 */
+	uint32_t t4[2]; /* t4 = Receive Timestamp @ Client */
+	double T1, T2, T3, T4;
+	double tfrac = 4294967296.0;
+	time_t curr_time;
+	time_t diff_sec;
+
+	if (recv(fd, buf, 48, 0) < 48) {
+		die("Receive error\n");
+	}
+	gettime64(t4);
+	pt = (uint32_t *)&buf[24];
+
+	t1[0] = htonl(*pt++);
+	t1[1] = htonl(*pt++);
+
+	t2[0] = htonl(*pt++);
+	t2[1] = htonl(*pt++);
+
+	t3[0] = htonl(*pt++);
+	t3[1] = htonl(*pt++);
+
+	/* t1 = Transmit Timestamp @ Client */
+	/* 
+	 * (Version=4, Mode=Server,
+	 * 	Stratum = 0-15, etc.)*/
+
+	T1 = t1[0] + t1[1]/tfrac;
+	T2 = t2[0] + t2[1]/tfrac;
+	T3 = t3[0] + t3[1]/tfrac;
+	T4 = t4[0] + t4[1]/tfrac;
+
+    //delay：NTP报文的往返时延
+    //offset：client与server的时间差
+	printf( "\ndelay = %lf\n"
+		"offset = %lf\n\n",
+		(T4-T1) - (T3-T2),
+		((T2 - T1) + (T3 - T4)) /2
+	      );
+
+	diff_sec = ((int32_t)(t2[0] - t1[0]) + (int32_t)(t3[0] - t4[0])) /2;
+	curr_time = time(NULL) - diff_sec;
+	printf("Current Time at Server:   %s\n", ctime(&curr_time));
+}
+
+int client(const char* server)
+{
+	int fd;
+
+	fd = open_connect(server);
+	request(fd);
+	get_reply(fd);
+	close(fd);
+
+	return 0;
+}
+
+
+int main(int argc, char *argv[], char **env)
+{
+	if (argc < 2) {
+		return useage(argv[0]);
+	}
+
+	return client(argv[1]);
+}

1_6.h12_dev/ntp/timesync/.svn/pristine/df/dff6b09b9a7192271ed8e575817755d897714d65.svn-base

@@ -0,0 +1,213 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <signal.h>
+#include <sys/time.h> /* gettimeofday() */
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <sys/socket.h>
+#include <netdb.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+#include <time.h> /* for time() and ctime() */
+
+//1900至1970年间经过的总秒数
+#define UTC_NTP 2208988800U /* 1970 - 1900 */
+
+/* get Timestamp for NTP in LOCAL ENDIAN */
+void gettime64(uint32_t ts[])
+{
+	struct timeval tv;
+	gettimeofday(&tv, NULL);
+
+	ts[0] = tv.tv_sec + UTC_NTP;
+	ts[1] = (4294*(tv.tv_usec)) + ((1981*(tv.tv_usec))>>11);
+}
+
+
+int die(const char *msg)
+{
+	if (msg) {
+		fputs(msg, stderr);
+	}
+	exit(-1);
+}
+
+
+void log_request_arrive(uint32_t *ntp_time)
+{
+	time_t t; 
+
+	if (ntp_time) {
+		t = *ntp_time - UTC_NTP;
+	} else {
+		t = time(NULL);
+	}
+	printf("A request comes at: %s", ctime(&t));
+}
+
+
+void log_ntp_event(char *msg)
+{
+	puts(msg);
+}
+
+//应答client
+int ntp_reply(
+	int socket_fd,
+	struct sockaddr *saddr_p,
+	socklen_t saddrlen,
+	unsigned char recv_buf[],
+	uint32_t recv_time[])
+{
+	/* Assume that recv_time is in local endian ! */
+	unsigned char send_buf[48];
+	uint32_t *u32p;
+
+ 	/* do not use 0xC7 because the LI=11 can be `unsynchronized` */
+	if ((recv_buf[0] & 0x07/*0xC7*/) != 0x3) {
+		/* LI VN Mode stimmt nicht */
+		log_ntp_event("Invalid request: found error at the first byte");
+		return 1;
+	}
+
+	/*  设置 LI VN Mode 的值
+	   	LI   = 0
+		VN   = Version Number 同 Client
+		Mode = 4
+	 */
+	send_buf[0] = (recv_buf[0] & 0x38) + 4;
+
+	/* Stratum */
+	send_buf[1] = 0x01;
+	/* Reference ID = "LOCL" ,即参考时钟源的标识*/
+	*(uint32_t*)&send_buf[12] = htonl(0x4C4F434C);
+
+	/* Copy Poll */
+	send_buf[2] = recv_buf[2];
+
+	/* Precision in Microsecond ( from API gettimeofday() ) */
+	send_buf[3] = (signed char)(-6);  /* 2^(-6) sec */
+
+	u32p = (uint32_t *)&send_buf[4];
+	/* 设置Root Delay = 0, Root Dispersion = 0 */
+	*u32p++ = 0;
+	*u32p++ = 0;
+
+	/* Reference ID前面已经设置*/
+	u32p++;
+
+	/* 设置 Reference TimeStamp */
+	gettime64(u32p);
+	*u32p = htonl(*u32p - 60);   /* -1 Min.*/
+	u32p++;
+	*u32p = htonl(*u32p);   /* -1 Min.*/
+	u32p++;
+
+	/* Originate Time = Transmit Time @ Client */
+	*u32p++ = *(uint32_t *)&recv_buf[40];
+	*u32p++ = *(uint32_t *)&recv_buf[44];
+
+	/* Receive Time @ Server */
+	*u32p++ = htonl(recv_time[0]);
+	*u32p++ = htonl(recv_time[1]);
+
+	/* 设置 Transmit Time*/
+	gettime64(u32p);
+	*u32p = htonl(*u32p);   /* -1 Min.*/
+	u32p++;
+	*u32p = htonl(*u32p);   /* -1 Min.*/
+
+	if ( sendto( socket_fd,
+		     send_buf,
+		     sizeof(send_buf), 0,
+		     saddr_p, saddrlen)
+	     < 48) {
+		perror("sendto error");
+		return 1;
+	}
+
+	return 0;
+}
+
+
+void request_process_loop(int fd)
+{
+	struct sockaddr src_addr;
+	socklen_t src_addrlen = sizeof(src_addr);
+	unsigned char buf[48];
+	uint32_t recv_time[2];
+	pid_t pid;
+
+	while (1) {
+		while (recvfrom(fd, buf,
+				48, 0,
+				&src_addr,
+				&src_addrlen)
+			< 48 );  /* invalid request */
+
+		gettime64(recv_time);
+		/* recv_time in local endian */
+		log_request_arrive(recv_time);
+
+		pid = fork();
+		if (pid == 0) {
+			/* Child */
+			ntp_reply(fd, &src_addr , src_addrlen, buf, recv_time);
+			exit(0);
+		} else if (pid == -1) {
+			perror("fork() error");
+			die(NULL);
+		}
+		/* return to parent */
+	}
+}
+
+
+void ntp_server()
+{
+	int s;
+	struct sockaddr_in sinaddr;
+
+	s = socket(AF_INET, SOCK_DGRAM, 0);
+	if (s == -1) {
+		perror("Can not create socket.");
+		die(NULL);
+	}
+
+	memset(&sinaddr, 0, sizeof(sinaddr));
+	sinaddr.sin_family = AF_INET;
+    //NTP基于UDP报文传输，使用的UDP端口号为123
+	sinaddr.sin_port = htons(123);
+	sinaddr.sin_addr.s_addr = INADDR_ANY;
+
+	if (0 != bind(s, (struct sockaddr *)&sinaddr, sizeof(sinaddr))) {
+		perror("Bind error");
+		die(NULL);
+	}
+
+	log_ntp_event(	"\n========================================\n"
+			"= Server started, waiting for requests =\n"
+			"========================================\n");
+
+	request_process_loop(s);
+	close(s);
+}
+
+
+void wait_wrapper()
+{
+	int s;
+	wait(&s);
+}
+
+
+int main(int argc, char *argv[], char **env)
+{
+	signal(SIGCHLD,wait_wrapper);
+	ntp_server();
+	return 0;
+}

1_6.h12_dev/ntp/timesync/Makefile

@@ -0,0 +1,20 @@
+.PHONY: all clean tags
+
+CFLAGS:=-Wall -O2
+
+all: client server
+
+server: server.c
+	$(CC) $(CFLAGS) $^ -o $@
+	strip -s $@
+
+client: client.c
+	$(CC) $(CFLAGS) $^ -o $@
+	strip -s $@
+
+tags:
+	ctags -R .
+
+clean:
+	-rm *.o client server
+

1_6.h12_dev/ntp/timesync/README

@@ -0,0 +1,2 @@
+sudo ./server
+./client <server ip address>

1_6.h12_dev/ntp/timesync/client.c

@@ -0,0 +1,165 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <sys/time.h> /* gettimeofday() */
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netdb.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+#include <time.h> /* for time() and ctime() */
+
+/*
+ * rfc1305的ntp时间中，时间为64bit，记录1900年后的秒数（utc格式）
+ * 高32位是整数部分，低32位是小数部分*/
+#define UTC_NTP 2208988800U /* 1970 - 1900 */
+
+/* get Timestamp for NTP in LOCAL ENDIAN */
+void gettime64(uint32_t ts[])
+{
+	struct timeval tv;
+	gettimeofday(&tv, NULL);
+
+	ts[0] = tv.tv_sec + UTC_NTP;
+	ts[1] = (4294*(tv.tv_usec)) + ((1981*(tv.tv_usec))>>11);
+}
+
+int die(const char *msg)
+{
+	fputs(msg, stderr);
+	exit(-1);
+}
+
+int useage(const char *path)
+{
+	printf("Useage:\n\t%s <server address>\n", path);
+	return 1;
+}
+
+
+//开始连接服务器
+int open_connect(const char* server)
+{
+	int s;
+	struct addrinfo *saddr;
+
+	/* printf("Connecting to server: %s\n", server); */
+	s = socket(AF_INET, SOCK_DGRAM, 0);
+	if (s == -1) {
+		die("Can not create socket.\n");
+	}
+
+	if (0 != getaddrinfo(server, "123", NULL, &saddr)) {
+		die("Server address not correct.\n");
+	}
+
+	if (connect(s, saddr->ai_addr, saddr->ai_addrlen) != 0) {
+		die("Connect error\n");
+	}
+
+	freeaddrinfo(saddr);
+
+	return s;
+}
+
+//发送请求报文
+void request(int fd)
+{
+	unsigned char buf[48] = {0};
+	uint32_t tts[2]; /* Transmit Timestamp */
+
+	/* LI VN MODE = 00 100 011*/
+    /* MODE：3表示客户模式，4表示服务器模式*/
+	buf[0] = 0x23;
+
+	gettime64(tts);
+    //此处将Originate Timestamp设置在Transmit Timestamp处
+	(*(uint32_t *)&buf[40]) = htonl(tts[0]);
+	(*(uint32_t *)&buf[44])= htonl(tts[1]);
+	if (send(fd, buf, 48, 0) !=48 ) {
+		die("Send error\n");
+	}
+}
+
+//获得NTP应答报文
+void get_reply(int fd)
+{
+	unsigned char buf[48];
+	uint32_t *pt;
+	// uint32_t t_last_update[2]; /* Reference Timestamp @ Server */
+	uint32_t t1[2]; /* t1 = Originate Timestamp,即NTP请求报文离开发送端时发送端的本地时间  */
+	uint32_t t2[2]; /* t2 = Receive Timestamp @ Server,即NTP请求报文到达接收端时接收端的本地时间 */
+	uint32_t t3[2]; /* t3 = Transmit Timestamp @ Server,即应答报文离开应答者时应答者的本地时间 */
+	uint32_t t4[2]; /* t4 = Receive Timestamp @ Client */
+	double T1, T2, T3, T4;
+	double tfrac = 4294967296.0;
+	time_t curr_time;
+	time_t diff_sec;
+
+	if (recv(fd, buf, 48, 0) < 48) {
+		die("Receive error\n");
+	}
+	gettime64(t4);
+	pt = (uint32_t *)&buf[24];
+
+	t1[0] = htonl(*pt++);
+	t1[1] = htonl(*pt++);
+
+	t2[0] = htonl(*pt++);
+	t2[1] = htonl(*pt++);
+
+	t3[0] = htonl(*pt++);
+	t3[1] = htonl(*pt++);
+
+	/* t1 = Transmit Timestamp @ Client */
+	/* 
+	 * (Version=4, Mode=Server,
+	 * 	Stratum = 0-15, etc.)*/
+
+	T1 = t1[0] + t1[1]/tfrac;
+	T2 = t2[0] + t2[1]/tfrac;
+	T3 = t3[0] + t3[1]/tfrac;
+	T4 = t4[0] + t4[1]/tfrac;
+
+    //delay：NTP报文的往返时延
+    //offset：client与server的时间差
+	printf( "\ndelay = %lf\n"
+		"offset = %lf\n\n",
+		(T4-T1) - (T3-T2),
+		((T2 - T1) + (T3 - T4)) /2
+	      );
+
+	diff_sec = ((int32_t)(t2[0] - t1[0]) + (int32_t)(t3[0] - t4[0])) /2;
+	curr_time = time(NULL) - diff_sec;
+	printf("Current Time at Server:   %s\n", ctime(&curr_time));
+	printf("Current TimeStamp at Server:   %d\n", (int)curr_time);
+}
+
+int client(const char* server)
+{
+	int fd;
+
+	fd = open_connect(server);
+	request(fd);
+	get_reply(fd);
+	close(fd);
+
+	return 0;
+}
+
+
+int main(int argc, char *argv[], char **env)
+{
+    while(1)
+    {
+        if (argc < 2) 
+        {
+            return useage(argv[0]);
+        }
+        //return client(argv[1]);
+        client(argv[1]);
+        sleep(3);
+    }
+}

1_6.h12_dev/ntp/timesync/server.c

@@ -0,0 +1,213 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <signal.h>
+#include <sys/time.h> /* gettimeofday() */
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <sys/socket.h>
+#include <netdb.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+#include <time.h> /* for time() and ctime() */
+
+//1900至1970年间经过的总秒数
+#define UTC_NTP 2208988800U /* 1970 - 1900 */
+
+/* get Timestamp for NTP in LOCAL ENDIAN */
+void gettime64(uint32_t ts[])
+{
+	struct timeval tv;
+	gettimeofday(&tv, NULL);
+
+	ts[0] = tv.tv_sec + UTC_NTP;
+	ts[1] = (4294*(tv.tv_usec)) + ((1981*(tv.tv_usec))>>11);
+}
+
+
+int die(const char *msg)
+{
+	if (msg) {
+		fputs(msg, stderr);
+	}
+	exit(-1);
+}
+
+
+void log_request_arrive(uint32_t *ntp_time)
+{
+	time_t t; 
+
+	if (ntp_time) {
+		t = *ntp_time - UTC_NTP;
+	} else {
+		t = time(NULL);
+	}
+	printf("A request comes at: %s", ctime(&t));
+}
+
+
+void log_ntp_event(char *msg)
+{
+	puts(msg);
+}
+
+//应答client
+int ntp_reply(
+	int socket_fd,
+	struct sockaddr *saddr_p,
+	socklen_t saddrlen,
+	unsigned char recv_buf[],
+	uint32_t recv_time[])
+{
+	/* Assume that recv_time is in local endian ! */
+	unsigned char send_buf[48];
+	uint32_t *u32p;
+
+ 	/* do not use 0xC7 because the LI=11 can be `unsynchronized` */
+	if ((recv_buf[0] & 0x07/*0xC7*/) != 0x3) {
+		/* LI VN Mode stimmt nicht */
+		log_ntp_event("Invalid request: found error at the first byte");
+		return 1;
+	}
+
+	/*  设置 LI VN Mode 的值
+	   	LI   = 0
+		VN   = Version Number 同 Client
+		Mode = 4
+	 */
+	send_buf[0] = (recv_buf[0] & 0x38) + 4;
+
+	/* Stratum */
+	send_buf[1] = 0x01;
+	/* Reference ID = "LOCL" ,即参考时钟源的标识*/
+	*(uint32_t*)&send_buf[12] = htonl(0x4C4F434C);
+
+	/* Copy Poll */
+	send_buf[2] = recv_buf[2];
+
+	/* Precision in Microsecond ( from API gettimeofday() ) */
+	send_buf[3] = (signed char)(-6);  /* 2^(-6) sec */
+
+	u32p = (uint32_t *)&send_buf[4];
+	/* 设置Root Delay = 0, Root Dispersion = 0 */
+	*u32p++ = 0;
+	*u32p++ = 0;
+
+	/* Reference ID前面已经设置*/
+	u32p++;
+
+	/* 设置 Reference TimeStamp */
+	gettime64(u32p);
+	*u32p = htonl(*u32p - 60);   /* -1 Min.*/
+	u32p++;
+	*u32p = htonl(*u32p);   /* -1 Min.*/
+	u32p++;
+
+	/* Originate Time = Transmit Time @ Client */
+	*u32p++ = *(uint32_t *)&recv_buf[40];
+	*u32p++ = *(uint32_t *)&recv_buf[44];
+
+	/* Receive Time @ Server */
+	*u32p++ = htonl(recv_time[0]);
+	*u32p++ = htonl(recv_time[1]);
+
+	/* 设置 Transmit Time*/
+	gettime64(u32p);
+	*u32p = htonl(*u32p);   /* -1 Min.*/
+	u32p++;
+	*u32p = htonl(*u32p);   /* -1 Min.*/
+
+	if ( sendto( socket_fd,
+		     send_buf,
+		     sizeof(send_buf), 0,
+		     saddr_p, saddrlen)
+	     < 48) {
+		perror("sendto error");
+		return 1;
+	}
+
+	return 0;
+}
+
+
+void request_process_loop(int fd)
+{
+	struct sockaddr src_addr;
+	socklen_t src_addrlen = sizeof(src_addr);
+	unsigned char buf[48];
+	uint32_t recv_time[2];
+	pid_t pid;
+
+	while (1) {
+		while (recvfrom(fd, buf,
+				48, 0,
+				&src_addr,
+				&src_addrlen)
+			< 48 );  /* invalid request */
+
+		gettime64(recv_time);
+		/* recv_time in local endian */
+		log_request_arrive(recv_time);
+
+		pid = fork();
+		if (pid == 0) {
+			/* Child */
+			ntp_reply(fd, &src_addr , src_addrlen, buf, recv_time);
+			exit(0);
+		} else if (pid == -1) {
+			perror("fork() error");
+			die(NULL);
+		}
+		/* return to parent */
+	}
+}
+
+
+void ntp_server()
+{
+	int s;
+	struct sockaddr_in sinaddr;
+
+	s = socket(AF_INET, SOCK_DGRAM, 0);
+	if (s == -1) {
+		perror("Can not create socket.");
+		die(NULL);
+	}
+
+	memset(&sinaddr, 0, sizeof(sinaddr));
+	sinaddr.sin_family = AF_INET;
+    //NTP基于UDP报文传输，使用的UDP端口号为123
+	sinaddr.sin_port = htons(123);
+	sinaddr.sin_addr.s_addr = INADDR_ANY;
+
+	if (0 != bind(s, (struct sockaddr *)&sinaddr, sizeof(sinaddr))) {
+		perror("Bind error");
+		die(NULL);
+	}
+
+	log_ntp_event(	"\n========================================\n"
+			"= Server started, waiting for requests =\n"
+			"========================================\n");
+
+	request_process_loop(s);
+	close(s);
+}
+
+
+void wait_wrapper()
+{
+	int s;
+	wait(&s);
+}
+
+
+int main(int argc, char *argv[], char **env)
+{
+	signal(SIGCHLD,wait_wrapper);
+	ntp_server();
+	return 0;
+}

1_6.h12_dev/ntp/timesync/tags

@@ -0,0 +1,26 @@
+!_TAG_FILE_FORMAT	2	/extended format; --format=1 will not append ;" to lines/
+!_TAG_FILE_SORTED	1	/0=unsorted, 1=sorted, 2=foldcase/
+!_TAG_PROGRAM_AUTHOR	Darren Hiebert	/dhiebert@users.sourceforge.net/
+!_TAG_PROGRAM_NAME	Exuberant Ctags	//
+!_TAG_PROGRAM_URL	http://ctags.sourceforge.net	/official site/
+!_TAG_PROGRAM_VERSION	5.9~svn20110310	//
+CFLAGS	Makefile	/^CFLAGS:=-Wall -O2$/;"	m
+UTC_NTP	client.c	17;"	d	file:
+UTC_NTP	server.c	18;"	d	file:
+client	client.c	/^int client(const char* server)$/;"	f
+die	client.c	/^int die(const char *msg)$/;"	f
+die	server.c	/^int die(const char *msg)$/;"	f
+get_reply	client.c	/^void get_reply(int fd)$/;"	f
+gettime64	client.c	/^void gettime64(uint32_t ts[])$/;"	f
+gettime64	server.c	/^void gettime64(uint32_t ts[])$/;"	f
+log_ntp_event	server.c	/^void log_ntp_event(char *msg)$/;"	f
+log_request_arrive	server.c	/^void log_request_arrive(uint32_t *ntp_time)$/;"	f
+main	client.c	/^int main(int argc, char *argv[], char **env)$/;"	f
+main	server.c	/^int main(int argc, char *argv[], char **env)$/;"	f
+ntp_reply	server.c	/^int ntp_reply($/;"	f
+ntp_server	server.c	/^void ntp_server()$/;"	f
+open_connect	client.c	/^int open_connect(const char* server)$/;"	f
+request	client.c	/^void request(int fd)$/;"	f
+request_process_loop	server.c	/^void request_process_loop(int fd)$/;"	f
+useage	client.c	/^int useage(const char *path)$/;"	f
+wait_wrapper	server.c	/^void wait_wrapper()$/;"	f