lan-test.c

用于测试uclinux嵌入式系统以太网UDP方式的发送速度

#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <netdb.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>

#define serverip 192.168.10.250
#define port  8000
#define package_size 512

//得到文件的大小//
long filesize(FILE *stream)
{
  long curpos,length;
  curpos=ftell(stream);
  fseek(stream,0l,SEEK_END);
  length=ftell(stream);
  fseek(stream,curpos,SEEK_SET);
  return length;
}

int main(int argc, char *argv[])    //argc为参数的个数，argv[]参数的内容
{
  int sockfd;
  char *hostip;
  struct hostent *host;
  struct sockaddr_in server_address;
  char buf[package_size];
  FILE *stream,*fp;
  int sendbytes;
  int allsenddata=0;
  int readsizes=0;
    
  hostip="192.168.10.250";
  host=gethostbyname(hostip);

  if((sockfd=socket(AF_INET,SOCK_DGRAM,0))==-1)
   {
    perror("socket error:");
    exit(1);
   }
  server_address.sin_family=AF_INET;
  server_address.sin_port=htons(port);
  server_address.sin_addr=*((struct in_addr*)host->h_addr);
  bzero(&(server_address.sin_zero),8);
  stream=fopen("/home/test1.txt","rb");
  printf("the file size is:%ld bytes!\n",filesize(stream));
  if(stream==NULL)
    {
      perror("open file error:");
      exit(1);
    }
  fp=fopen("/mnt/test2.txt","wb+");
  if(fp==NULL)
    perror("construct file error:");
  else
    {
      fputs("hello,it is ok!\n",fp);
      fclose(fp);  
    }
  while(!feof(stream))
    { 
      readsizes=fread(buf,1,package_size,stream);
      sendbytes=sendto(sockfd,buf,readsizes,0,(struct sockaddr*)&server_address,sizeof(struct sockaddr));
      if(sendbytes==-1)
       {
         perror("send data failed:");
         exit(1);
       }  
      allsenddata+=sendbytes;           
     }  
 printf("send sucess!\n");
 printf("send data size:%d bytes\n",allsenddata);
 fclose(stream); 
 close(sockfd);
 exit(0);
}