test_splice.cpp

//
// Created by s on 19-5-3.
//

/*
 * 测试splice函数
 * 零拷贝，在两个文件描述符之间传递数据
 */


#include "myutili.h"

int main (int argc, char *argv[])
{
  if (argc <= 2)
    {
      printf ("usage: %s ip_address port_number\n", basename (argv[0]));
      exit (EXIT_FAILURE);
    }

  const char *ip = argv[1];
  int port = atoi (argv[2]);

  int listenfd = Start_TCPserver_up (ip, port);

  struct sockaddr_in cli_addr;
  socklen_t cli_addr_length = sizeof (cli_addr);
  int connfd = Accept (listenfd, (struct sockaddr *) &cli_addr, &cli_addr_length);

  int pipefd[2];
  Pipe (pipefd);

  Splice (connfd, NULL, pipefd[1], NULL, 32768, SPLICE_F_MORE | SPLICE_F_MOVE);
  Splice (pipefd[0], NULL, connfd, NULL, 32768, SPLICE_F_MORE | SPLICE_F_MOVE);

  close (connfd);
  close (listenfd);
  return 0;
}