117 lines
2.9 KiB
C
117 lines
2.9 KiB
C
/*
|
|
* Initial commit by Yibo @ Jul. 28, 2015
|
|
* Last update by Yanzi @ Sept. 27, 2016
|
|
*/
|
|
|
|
#include <stdio.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
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
// defaults
|
|
uint total_bytes_recv = 0;
|
|
// 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 recvbuf[BUF_SIZ];
|
|
struct sockaddr_in servaddr;
|
|
// for misc
|
|
int ret;
|
|
int recvsize = 4096;
|
|
|
|
if (argc < 3)
|
|
{
|
|
printf("Usage: %s <ip> <port> <[optional] recvsize (bytes)> <[optional] filepath>\n", argv[0]);
|
|
exit(0);
|
|
}
|
|
|
|
// set sendsize (if larger than 1460 will do packetization (fragmentation))
|
|
if (argc > 3)
|
|
recvsize = atoi(argv[3]);
|
|
|
|
// bind socket
|
|
sockfd = socket(AF_INET, SOCK_STREAM, 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]));
|
|
|
|
// connect socket
|
|
if (connect(sockfd, (struct sockaddr *)&servaddr, sizeof(servaddr)) < 0)
|
|
{
|
|
fprintf(stderr, "! Unable to connect the server.\n");
|
|
exit(1);
|
|
}
|
|
|
|
// if instrument to write to a file
|
|
if (argc > 4)
|
|
{
|
|
fd = open(argv[4], O_WRONLY | O_CREAT | O_TRUNC);
|
|
if (fd == -1) {
|
|
fprintf(stderr, "! Unable to open file %s.\n", argv[2]);
|
|
close(sockfd);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
// start timing
|
|
gettimeofday(&t_start, NULL);
|
|
|
|
// start to receive
|
|
for (;;)
|
|
{
|
|
// printf("before: total_bytes_recv %d\n", total_bytes_recv);
|
|
ret = recv(sockfd, recvbuf, recvsize, 0);
|
|
|
|
if (ret <= 0)
|
|
{
|
|
if (errno == 0)
|
|
{
|
|
if (argc > 4)
|
|
close(fd);
|
|
break;
|
|
}
|
|
fprintf(stderr, "! Fail to recv: ret:%d, err:%d; quiting..\n", ret, errno);
|
|
exit(1);
|
|
}
|
|
// write to file if specified filename
|
|
if (argc > 4)
|
|
write(fd, recvbuf, ret);
|
|
// count how many bytes received
|
|
total_bytes_recv += ret;
|
|
// printf("after: total_bytes_recv %d\n", total_bytes_recv);
|
|
}
|
|
|
|
// 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(
|
|
"recv(bytes):%d\nduration(s):%lf\nthroughput(bps):%lf\n",
|
|
total_bytes_recv, elapsedTime, total_bytes_recv * 8 / elapsedTime);
|
|
|
|
close(sockfd);
|
|
if (argc > 4)
|
|
close(fd);
|
|
|
|
return 0;
|
|
}
|