mirror of https://git.zx2c4.com/WireGuard
51 lines
1.3 KiB
C
51 lines
1.3 KiB
C
#include <sys/socket.h>
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#include <sys/ioctl.h>
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#include <net/if.h>
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#include <netinet/in.h>
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#include <linux/limits.h>
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#include <time.h>
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#include <stdio.h>
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#include <string.h>
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static unsigned long long interface_tx_bytes(const char *interface)
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{
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char buf[PATH_MAX];
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FILE *f;
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unsigned long long ret;
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snprintf(buf, PATH_MAX - 1, "/sys/class/net/%s/statistics/tx_bytes", interface);
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f = fopen(buf, "r");
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fscanf(f, "%llu", &ret);
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fclose(f);
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return ret;
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}
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int main(int argc, char *argv[])
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{
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char buf[1500] = { 0 };
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unsigned long long before, after, i;
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struct timespec begin, end;
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double elapsed;
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struct ifreq req;
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int fd = socket(AF_INET, SOCK_DGRAM, 0);
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struct sockaddr_in addr = {
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.sin_family = AF_INET,
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.sin_port = htons(7271),
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.sin_addr = inet_addr(argv[3])
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};
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strcpy(req.ifr_name, argv[1]);
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ioctl(fd, SIOCGIFMTU, &req);
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connect(fd, (struct sockaddr *)&addr, sizeof(addr));
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before = interface_tx_bytes(argv[2]);
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clock_gettime(CLOCK_MONOTONIC, &begin);
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for (i = 0; i < 10000000; ++i)
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send(fd, buf, req.ifr_mtu - 28, 0);
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clock_gettime(CLOCK_MONOTONIC, &end);
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after = interface_tx_bytes(argv[2]);
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elapsed = end.tv_sec - begin.tv_sec + (end.tv_nsec - begin.tv_nsec) / 1000000000.0;
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printf("%.4f mbps\n", ((after - before) * 8) / elapsed / 1000000.0);
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return 0;
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}
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