Vehicle-cpp/EgoJC/update_time/main.cpp

#include <unistd.h>
#include <arpa/inet.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h> 
#include <fcntl.h>
#include <poll.h>
#include <sys/time.h>
#define socketerrno errno
#define SOCKET_EAGAIN_EINPROGRESS EAGAIN
#define SOCKET_EWOULDBLOCK EWOULDBLOCK
#define INVALID_SOCKET -1
#define SOCKET_ERROR -1
 
typedef int socket_t;
 
#include "../common/iobuffer.h"
#include "protocol.pb.h"
int main(int, char**){
    int _fd = socket(AF_INET, SOCK_DGRAM, 0);
	sockaddr_in sin;
	sin.sin_family = AF_INET;
	sin.sin_port = htons(23816);
	sin.sin_addr.s_addr = inet_addr("192.168.3.131");
    MessageHead Head;
    Head.Command=RemoNet::CS_SyncTime;
    Head.Length=0;
    CIOBuffer buffer;
    Head.Serialize(buffer.Buffer);
    buffer.Length=sizeof(MessageHead);
    int32_t ret=sendto(_fd,buffer.Buffer,buffer.Length,0,(sockaddr * )&sin,sizeof(sin));
    sockaddr_in from;
	socklen_t fromlen=sizeof(sockaddr_in); 
    ret=recvfrom(_fd,buffer.Buffer,CIOBuffer::IO_BUFFER_SIZE,0,(sockaddr *)&from,&fromlen);
    if(ret>0)
    {
               MessageHead Head;
               Head.Deserialize(buffer.Buffer);
               if(ret<MessageHead::Size()+Head.Length) return -1;
                 auto ptr=buffer.Buffer+MessageHead::Size();
                 RemoNet::SyncTime Req;
                    Req.ParseFromArray(ptr,Head.Length);
                  
                    {
                        struct tm _tm;  
                        _tm.tm_sec = Req.tm_sec();  
                        _tm.tm_min = Req.tm_min();  
                        _tm.tm_hour = Req.tm_hour();  
                        _tm.tm_mday = Req.tm_mday();  
                        _tm.tm_mon = Req.tm_mon();  
                        _tm.tm_year = Req.tm_year(); 
                        _tm.tm_wday=Req.tm_wday();
                        _tm.tm_yday=Req.tm_yday();
                        _tm.tm_isdst=Req.tm_isdst();
                        auto  timep = mktime(&_tm);  
                        struct timeval tv;  
                        tv.tv_sec = timep;  
                        tv.tv_usec = 0;   
                        if(settimeofday (&tv, (struct timezone *) 0) < 0)  
                        {  
                        printf("Set system datatime error   %s!/n",strerror(errno ));  
                        
                        }  
                    }
    }

		
     
}