126 lines
3.2 KiB
C
126 lines
3.2 KiB
C
/*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*/
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#include <arpa/inet.h>
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#include <linux/if_packet.h>
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#include <linux/ip.h>
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#include <linux/udp.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include <netinet/ether.h>
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#include <sys/sendfile.h>
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#include <errno.h>
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#include <sys/time.h>
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#define ETH_P_IP 0x0800 /* Internet Protocol packet */
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#define ETH_ALEN 6 /* from <net/ethernet.h> */
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#define ETH_P_ALL 0x0003
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#define ETHER_TYPE 0x0800 /* Customize */
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#define MY_DEST_MAC0 0xba
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#define MY_DEST_MAC1 0xf6
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#define MY_DEST_MAC2 0xb1
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#define MY_DEST_MAC3 0x71
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#define MY_DEST_MAC4 0x09
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#define MY_DEST_MAC5 0x64
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#define DEFAULT_IF "wlan0"
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#define BUF_SIZ 8192
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int main(int argc, char *argv[])
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{
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struct iovec iov;
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int sockfd, socktrigger;
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int sockopt;
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struct ifreq ifopts; /* set promiscuous mode */
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struct ifreq if_ip; /* get ip addr */
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ssize_t numbytes;
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int tx_len = 0;
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char sendbuf[BUF_SIZ];
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struct ether_header *eh = (struct ether_header *) sendbuf;
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struct iphdr *iph = (struct iphdr *) (sendbuf + sizeof(struct ether_header));
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struct sockaddr_ll socket_address;
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struct sockaddr_in servaddr;
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char ifName[IFNAMSIZ];
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int i, j, ret, sendsize=1500, packet_num, offset = 0, port = 32000;
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int fd; /* file descriptor for file to send */
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struct timeval t_start,t_end;
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/* Get interface name */
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strcpy(ifName, DEFAULT_IF);
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if (argc > 1)
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packet_num = atoi(argv[1])/sendsize;
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else
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packet_num = 166666;
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sockfd = socket(AF_INET, SOCK_DGRAM, 0);
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bzero(&servaddr,sizeof(servaddr));
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servaddr.sin_family = AF_INET;
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servaddr.sin_addr.s_addr=inet_addr("128.111.68.220");
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servaddr.sin_port=htons(port);
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sendto(sockfd, "0\n",strlen("0\n"),0, (struct sockaddr *)&servaddr, sizeof(servaddr));
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if ((sockfd = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL))) == -1) {
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perror("listener: socket");
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return -1;
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}
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strncpy(ifopts.ifr_name, ifName, IFNAMSIZ-1);
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ioctl(sockfd, SIOCGIFFLAGS, &ifopts);
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ifopts.ifr_flags |= IFF_PROMISC;
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ioctl(sockfd, SIOCSIFFLAGS, &ifopts);
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if (setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &sockopt, sizeof sockopt) == -1) {
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perror("setsockopt");
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close(sockfd);
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exit(EXIT_FAILURE);
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}
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if (setsockopt(sockfd, SOL_SOCKET, SO_BINDTODEVICE, ifName, IFNAMSIZ-1) == -1) {
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perror("SO_BINDTODEVICE");
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close(sockfd);
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exit(EXIT_FAILURE);
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}
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fd = open("/data/local/tmp/bigfile_w", O_WRONLY | O_CREAT | O_TRUNC);
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if (fd == -1) {
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fprintf(stderr, "unable to open the file.\n");
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exit(1);
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}
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/* Recv packet */
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gettimeofday(&t_start, NULL);
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for (i = 0; i < packet_num;)
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{
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numbytes = recvfrom(sockfd, sendbuf, sendsize, 0, NULL, NULL);
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//printf("listener: got packet %lu bytes\n", numbytes);
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if (sendbuf[50] == '0')
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{
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write(fd, sendbuf, sendsize);
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i++;
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}
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else
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{
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usleep(100);
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}
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}
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gettimeofday(&t_end, NULL);
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printf("%lf\n", (t_end.tv_sec-t_start.tv_sec)*1000.0+(t_end.tv_usec-t_start.tv_usec)/1000.0);
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return 0;
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}
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