epoll-7-recv.cpp

#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <sys/epoll.h>
#include <arpa/inet.h>

int main(){
  int sock0;
  sockaddr_in addr;
  sockaddr_in client;
  socklen_t len;
  int sock;
  int n;
  char buf[65536];
  int i;

  sock0 = socket(AF_INET, SOCK_STREAM, 0);

  addr.sin_family = AF_INET;
  addr.sin_port = htons(12345);
  addr.sin_addr.s_addr = INADDR_ANY;
  bind(sock0, (sockaddr*)&addr, sizeof(addr));

  listen(sock0, 5);

  len = sizeof(client);
  sock = accept(sock0, (sockaddr*)&client, &len);

  printf("after accept\n");

  for(i = 0; i < 10; ++i){
    sleep(2);
    n = read(sock, buf, sizeof(buf));
    printf("recv data size:[%d] bytes\n", n);
  }

  printf("close socket and finish\n");

  close(sock);

  return 0;
}