251 lines
8.2 KiB
C
251 lines
8.2 KiB
C
/*
|
|
* Initial commit by Yibo @ Jul. 28, 2015
|
|
* Last update by Yanzi @ Sept. 26, 2016
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <math.h>
|
|
#include <string.h>
|
|
#include <arpa/inet.h>
|
|
#include <linux/if_packet.h>
|
|
#include <stdlib.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/stat.h>
|
|
#include <net/if.h>
|
|
#include <netinet/ether.h>
|
|
#include <sys/sendfile.h>
|
|
#include <errno.h>
|
|
#include <sys/time.h>
|
|
#include <sys/socket.h>
|
|
#include <netinet/in.h>
|
|
#include <fcntl.h>
|
|
|
|
#define BUF_SIZ 65536
|
|
|
|
#if !defined SPLICE_F_MORE
|
|
# define SPLICE_F_MOVE 1 /* Move pages instead of copying. */
|
|
# define SPLICE_F_NONBLOCK 2 /* Don't block on the pipe splicing
|
|
(but we may still block on the fd
|
|
we splice from/to). */
|
|
# define SPLICE_F_MORE 4 /* Expect more data. */
|
|
# define SPLICE_F_GIFT 8 /* Pages passed in are a gift. */
|
|
#endif
|
|
|
|
char isNumber(char number[])
|
|
{
|
|
int i = 0;
|
|
|
|
//checking for negative numbers
|
|
if (number[0] == '-')
|
|
i = 1;
|
|
for (; number[i] != 0; i++)
|
|
{
|
|
//if (number[i] > '9' || number[i] < '0')
|
|
if (!isdigit(number[i]))
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
// for bandwidth control
|
|
uint slotLength = 10000; // in microseconds, for bandwidth control
|
|
uint quota = 1000000000; // default bytes per slot, default 1GB/slot
|
|
uint sentInSlot = 0, slot = 1;
|
|
uint total_bytes_sent = 0;
|
|
int bytes, bytes_sent, bytes_in_pipe;
|
|
// for timing
|
|
double elapsedTime;
|
|
struct timeval t_start, t_end, t_now;
|
|
// for socket
|
|
int fd; // file descriptor of file to send
|
|
int sockfd; // socket
|
|
// char ifName[IFNAMSIZ];
|
|
// char sendbuf[BUF_SIZ];
|
|
struct sockaddr_in servaddr;
|
|
// struct ether_header *eh = (struct ether_header *) sendbuf;
|
|
// struct iphdr *iph = (struct iphdr *) (sendbuf + sizeof(struct ether_header));
|
|
// struct sockaddr_ll socket_address;
|
|
// for misc
|
|
int ret;
|
|
int sendsize = 1472; // 1500 MTU - 20 IPv4 - 8 UDP
|
|
int bytes2send = 0;
|
|
struct stat st;
|
|
off_t offset = 0;
|
|
// create two pipes
|
|
int filedes[2];
|
|
ret = pipe(filedes);
|
|
|
|
if (argc < 4)
|
|
{
|
|
printf("Usage: %s <bytes2send/file2send> <ip> <port> <[optional] bandwidth (bps)> <[optional] sendsize (bytes)>\n", argv[0]);
|
|
exit(0);
|
|
}
|
|
|
|
// set bandwidth
|
|
if (argc > 4)
|
|
quota = atoi(argv[4]) / 8 / (1000000 / slotLength);
|
|
|
|
// set sendsize (if larger than 1472 will do packetization (fragmentation) (is this true??))
|
|
if (argc > 5)
|
|
sendsize = atoi(argv[5]);
|
|
|
|
// adjust slotLength to address packet size issue in the end
|
|
if ((quota % sendsize) > 0)
|
|
{
|
|
// printf("quota:%d,sendsize:%d,slotLength:%d\n", quota, sendsize, slotLength);
|
|
slotLength = (uint)((double)(quota / sendsize + 1) * sendsize / quota * slotLength);
|
|
quota = (quota / sendsize + 1) * sendsize;
|
|
// printf("quota:%d,sendsize:%d,slotLength:%d\n", quota, sendsize, slotLength);
|
|
}
|
|
|
|
// get file size (bytes2send)
|
|
if (isNumber(argv[1]))
|
|
{
|
|
// set bytes to send
|
|
bytes2send = atoi(argv[1]);
|
|
// open file descriptor
|
|
fd = open("/data/local/tmp/bigfile", O_RDONLY);
|
|
if (fd == -1)
|
|
{
|
|
fprintf(stderr, "! Unable to open /data/local/tmp/bigfile.\n");
|
|
exit(1);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// open file descriptor
|
|
fd = open(argv[1], O_RDONLY);
|
|
if (fd == -1)
|
|
{
|
|
fprintf(stderr, "! Unable to open file %s.\n", argv[1]);
|
|
exit(1);
|
|
}
|
|
fstat(fd, &st);
|
|
bytes2send = st.st_size;
|
|
printf("bytes2send:%d\n", bytes2send);
|
|
}
|
|
|
|
// bind socket
|
|
sockfd = socket(AF_INET, SOCK_DGRAM, 0);
|
|
bzero(&servaddr, sizeof(servaddr));
|
|
servaddr.sin_family = AF_INET;
|
|
servaddr.sin_addr.s_addr = inet_addr(argv[2]);
|
|
servaddr.sin_port = htons(atoi(argv[3]));
|
|
|
|
if(connect(sockfd, (struct sockaddr *) &servaddr, sizeof(servaddr)) < 0) {
|
|
perror("connect failed\n");
|
|
exit(-1);
|
|
}
|
|
|
|
// start timing
|
|
gettimeofday(&t_start, NULL);
|
|
|
|
// start to send
|
|
while (total_bytes_sent < bytes2send)
|
|
{
|
|
if ((bytes2send - total_bytes_sent) < quota)
|
|
{
|
|
quota = bytes2send - total_bytes_sent;
|
|
}
|
|
// initialize ret
|
|
// ret = 1;
|
|
// send in slots
|
|
while (sentInSlot < quota)
|
|
{
|
|
// printf(
|
|
// "before: total_bytes_sent %d, sentInSlot %d, quota - sentInSlot %d\n",
|
|
// total_bytes_sent, sentInSlot, quota - sentInSlot);
|
|
ret = sendfile(sockfd, fd, &offset,
|
|
((quota - sentInSlot < sendsize) ? (quota - sentInSlot) : sendsize));
|
|
|
|
// // Splice the data from in_fd into the pipe
|
|
// if ((bytes_sent = splice(fd, NULL, filedes[1], NULL,
|
|
// (quota - sentInSlot < sendsize) ? (quota - sentInSlot) : sendsize,
|
|
// SPLICE_F_MORE | SPLICE_F_MOVE)) <= 0) {
|
|
// if (errno == EINTR || errno == EAGAIN) {
|
|
// // Interrupted system call/try again
|
|
// // Just skip to the top of the loop and try again
|
|
// usleep(100);
|
|
// continue;
|
|
// }
|
|
// fprintf(stderr, "! splice error, errno: %d.\n", errno);
|
|
// exit(1);
|
|
// }
|
|
|
|
// // Splice the data from the pipe into out_fd
|
|
// bytes_in_pipe = bytes_sent;
|
|
// printf("bytes_in_pipe %d, err:%d\n", (int)bytes_sent, errno);
|
|
// while (bytes_in_pipe > 0) {
|
|
|
|
// if ((bytes = splice(filedes[0], NULL, sockfd, NULL, bytes_in_pipe,
|
|
// SPLICE_F_MORE | SPLICE_F_MOVE)) <= 0) {
|
|
// if (errno == EINTR || errno == EAGAIN || errno == EMSGSIZE) {
|
|
// // Interrupted system call/try again
|
|
// // Just skip to the top of the loop and try again
|
|
// fprintf(stderr, "! sleep 100, err:%d.\n", errno);
|
|
// usleep(1000);
|
|
// continue;
|
|
// }
|
|
// fprintf(stderr, "! splice error, errno: %d.\n", errno);
|
|
// usleep(1000);
|
|
// continue;
|
|
// }
|
|
// bytes_in_pipe -= bytes;
|
|
// // printf("bytes_in_pipe %d, value %d, err:%d\n", (int)bytes_in_pipe, (int)bytes, errno);
|
|
// }
|
|
|
|
// total_bytes_sent += bytes_sent;
|
|
// sentInSlot += bytes_sent;
|
|
|
|
if (ret <= 0)
|
|
{
|
|
fprintf(stderr, "! Fail to send: ret:%d, err:%d; wait for 100us..\n", ret, errno);
|
|
usleep(100);
|
|
// offset -= ((quota - sentInSlot < sendsize) ? (quota - sentInSlot) : sendsize);
|
|
continue;
|
|
}
|
|
sentInSlot += ret;
|
|
total_bytes_sent += ret;
|
|
// printf(
|
|
// "total_bytes_sent %d, sentInSlot %d, quota - sentInSlot %d\n",
|
|
// total_bytes_sent, sentInSlot, quota - sentInSlot);
|
|
}
|
|
// control bandwidth
|
|
gettimeofday(&t_now, NULL);
|
|
elapsedTime = (t_now.tv_sec - t_start.tv_sec) * 1000000.0 + (t_now.tv_usec - t_start.tv_usec);
|
|
if (elapsedTime < slotLength * slot)
|
|
{
|
|
// printf(
|
|
// "sent %d, quota %d, bytes2send %d, usleep %lfus\n",
|
|
// total_bytes_sent, quota, bytes2send, slotLength * slot - elapsedTime);
|
|
usleep((int)(slotLength * slot - elapsedTime));
|
|
}
|
|
sentInSlot = 0;
|
|
++slot;
|
|
}
|
|
|
|
ret = sendto(sockfd, "=?!\n", 4, 0, (struct sockaddr *)&servaddr, sizeof(servaddr));
|
|
if (ret <= 0)
|
|
{
|
|
fprintf(stderr, "! Unable to end data transfer. errno:%d.\n", errno);
|
|
close(sockfd);
|
|
close(fd);
|
|
exit(1);
|
|
}
|
|
|
|
// end timing
|
|
gettimeofday(&t_end, NULL);
|
|
elapsedTime = (t_end.tv_sec - t_start.tv_sec) + (t_end.tv_usec - t_start.tv_usec) / 1000000.0;
|
|
printf(
|
|
"sent(bytes):%d\nduration(s):%lf\nthroughput(bps):%lf\n",
|
|
total_bytes_sent, elapsedTime, total_bytes_sent * 8 / elapsedTime);
|
|
|
|
close(sockfd);
|
|
close(fd);
|
|
|
|
return 0;
|
|
}
|