126 lines
3.3 KiB
C
126 lines
3.3 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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//#define _BSD_SOURCE
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#include <arpa/inet.h>
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//#include <linux/if_packet.h>
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#include <unistd.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 <net/ethernet.h>
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//#include <socket.h>
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//#include <netinet/ether.h>
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//#include <sys/sendfile.h>
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//#include <sys/socket.h>
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#include <sys/types.h>
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#include <sys/uio.h>
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#include <errno.h>
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#include <sys/time.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <signal.h>
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#include <math.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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//ca:e0:eb:61:b7:64
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#define MY_DEST_MAC0 0xca
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#define MY_DEST_MAC1 0xe0
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#define MY_DEST_MAC2 0xeb
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#define MY_DEST_MAC3 0x61
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#define MY_DEST_MAC4 0xb7
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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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int slotLength = 10000; // in microseconds
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int quota = 1000000000; // Bytes per slot, default 1GB/slot
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int sentInSlot = 0, slot = 1;
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double elapsedTime;
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double packetPerSlot;
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struct iovec iov;
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int sockfd, listenfd;
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struct ifreq if_idx;
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struct ifreq if_mac;
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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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char ifName[IFNAMSIZ];
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int i, j, ret, sendsize=1458, packet_num=1000000000, offset = 0, port;
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//int fd; /* file descriptor for file to send */
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struct sockaddr_in servaddr,cliaddr;
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socklen_t clilen;
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struct timeval t_start,t_end,t_now;
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signal(SIGPIPE, SIG_IGN);
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if (argc > 1)
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quota = atoi(argv[1]) / (1000000 / slotLength);
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else
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{
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printf("Usage: UDPSender rate");
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exit(1);
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}
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for (i = 0; i < sendsize; i++) sendbuf[i] = '0';
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// fix packet size problem
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packetPerSlot = ceil(((double)quota) / sendsize);
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slotLength = (int)(packetPerSlot * sendsize / quota * slotLength);
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quota = (int)packetPerSlot * sendsize;
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//printf("TESThere1");
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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("192.168.2.2");
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servaddr.sin_port=htons(4444);
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//printf("testhere1");
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gettimeofday(&t_start, NULL);
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while (offset < packet_num)
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{
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if ((packet_num - offset) < quota)
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{
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quota = packet_num - offset;
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}
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while (sentInSlot < quota)
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{
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ret = sendto(sockfd, sendbuf, sendsize, 0, (struct sockaddr *)&servaddr, sizeof(servaddr));
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if (ret < sendsize)
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{
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printf("send fail\n");
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usleep(100);
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}
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offset += ret;
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sentInSlot = sentInSlot + ret;
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}
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//printf("here3");
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gettimeofday(&t_now, NULL);
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elapsedTime = (t_now.tv_sec-t_start.tv_sec)*1000000.0+(t_now.tv_usec-t_start.tv_usec);
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//printf("sent %d, quota %d, packet_num %d, usleep %lf\n", offset, quota, packet_num, slotLength * slot - elapsedTime);
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if (elapsedTime < slotLength * slot)
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{
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usleep((int)(slotLength * slot - elapsedTime));
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}
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sentInSlot = 0;
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slot++;
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}
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//close(fd);
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return 0;
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}
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