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fd=fopen (sended ,"rb ");/*sendedΪҪ´«Ë͵ÄÎļþ·¾¶*/
while (!feof (fd))/*fdΪÎļþÖ¸Õë*/
{
memset(buffer,0,256);
fgets (buffer ,256 , fd);

sendto(sockfdc,buffer,sizeof(buffer),0,(struct sockaddr*)&nicky,serverlen);
}
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while (1)
  {
 
recvfrom (sockfd,buffer,sizeof(buffer),0,(struct sockaddr*)&cilent,&cilentlen);
  fwrite(buffer,256,1,fd);
  memset(buffer,0,256); 
  }
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  int x2;

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