嵌入式 hi3518c本地udp套接示例以及sendto用法

嵌入式 hi3518c本地udp套接示例以及sendto用法

/*

Author : kj

Time :2013-12-24 22:05

Notice :

在一個.c中定義的全局變量，需要在其他.c中使用的話，需要的是在使用的.c中

extern struct sockaddr_un server_address_udp;

*/

#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <sys/wait.h>
#include <unistd.h>
#include <arpa/inet.h>
//#include <openssl/ssl.h>
//#include <openssl/err.h>
#include <pthread.h>
#include <sys/time.h>

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <net/if.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <net/route.h>
#include <unistd.h>
#include <signal.h>

 #include <net/if_arp.h>

#include <sys/time.h>
#include <string.h>
#include <stdio.h>
#include <fcntl.h>
#include <dirent.h>
#include <sys/vfs.h>

#define SOCK_UNIX_VIDEO_STREAM_FILE_SEVER "/tmp/video1_server"
#define SOCK_UNIX_VIDEO_STREAM_FILE_CLIENT "/tmp/video1_client"

int video_stream_net_func_udp(void)
{
#if 0
        int server_sockfd;
       
        //unlink (SOCK_UNIX_VIDEO_STREAM_FILE_SEVER);//delete the file link for the function of bind 

        server_sockfd = socket (AF_UNIX, SOCK_DGRAM, 0);
     
        server_address_udp.sun_family = AF_UNIX;
  //server_address_udp.sin_port=htons(PORT);
     
        strcpy (server_address_udp.sun_path, SOCK_UNIX_VIDEO_STREAM_FILE_SEVER);
     
        joseph_ipnc_s_socket.joseph_ipnc_s_socket_fd_udp_socket_size = sizeof (server_address_udp);
     
        //bind (server_sockfd, (struct sockaddr *)&server_address_udp, server_len);

  joseph_ipnc_s_socket.joseph_ipnc_s_socket_fd_udp = 0;
  joseph_ipnc_s_socket.joseph_ipnc_s_socket_fd_udp = server_sockfd;

  printf("%s %d The udp mode send to jss succeed ,joseph_ipnc_s_socket_fd_udp is %d !\n",__FUNCTION__,__LINE__,joseph_ipnc_s_socket.joseph_ipnc_s_socket_fd_udp);
#else
 int client_sockfd, ret;
 //struct sockaddr_un pmmanager_addr, pmapi_addr;

 client_sockfd = socket(AF_UNIX, SOCK_DGRAM, 0);   
 if(client_sockfd == -1)
 {
  perror("cannot create pmapi fd.");   
 }   
 unlink(SOCK_UNIX_VIDEO_STREAM_FILE_CLIENT);    //configure pmapi's addr   
 memset(&server_address_client, 0, sizeof(server_address_client));   
 server_address_client.sun_family = AF_UNIX;   
 strcpy(server_address_client.sun_path, SOCK_UNIX_VIDEO_STREAM_FILE_CLIENT);    //bind pmapi_fd to pmapi_addr   
 ret = bind(client_sockfd, (struct sockaddr*)&server_address_client, SUN_LEN(&server_address_client)); 
 if(ret == -1) 
 {
  perror("bind error.");   
 }

 //configure pmmanager's addr   
 memset(&server_address_udp, 0, sizeof(server_address_udp));   
 server_address_udp.sun_family = AF_UNIX;   
 strcpy(server_address_udp.sun_path, SOCK_UNIX_VIDEO_STREAM_FILE_SEVER);   

 joseph_ipnc_s_socket.joseph_ipnc_s_socket_fd_udp = 0;
 joseph_ipnc_s_socket.joseph_ipnc_s_socket_fd_udp = client_sockfd;

 joseph_personal_video_print("%s %d The udp mode send to jss succeed ,joseph_ipnc_s_socket_fd_udp is %d !\n",__FUNCTION__,__LINE__,joseph_ipnc_s_socket.joseph_ipnc_s_socket_fd_udp);

#endif
 return 0;
}

  /*
  int sendto ( socket s , const void * msg, int len, unsigned int flags, const struct sockaddr * to , int tolen ) ;
  sendto(sockfd,  buffer,  len,  0,  (struct addr*)&addr,  addr_len);¡±
  */

s_length = sendto(joseph_ipnc_s_socket.joseph_ipnc_s_socket_fd_udp, video_buf, video_length, 0,(struct sockaddr*)&server_address_udp,sizeof(struct sockaddr));