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#define _GNU_SOURCE // getline
#include <stdio.h>
#include <stddef.h>
#include <string.h>
#include <sys/select.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/ip_icmp.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <errno.h>
#include <assert.h>
#include "icmpd.h"
#include "util.h"
int main(void) {
const char *remote_addr = "127.0.0.1";
// const char *remote_addr = "198.211.118.67";
struct icmpd *d = icmpd_create_client(inet_addr(remote_addr));
int d_fd = icmpd_get_select_fd(d);
while (true) {
fd_set inset;
FD_ZERO(&inset);
FD_SET(0, &inset);
FD_SET(d_fd, &inset);
int ret = select(d_fd + 1, &inset, NULL, NULL, NULL);
if (ret < 0) {
if (errno == EINTR) continue;
perror("select");
return 1;
}
if (ret == 0) continue; // timeout
if (FD_ISSET(0, &inset)) {
char *line = NULL;
size_t linelen = 0;
errno = 0;
ssize_t nr = getline(&line, &linelen, stdin);
if (nr < 0) {
if (errno == 0) break; // EOF
perror("getline");
exit(1);
}
if (nr > 0) nr--;
icmpd_send(d, line, nr);
free(line);
}
if (FD_ISSET(d_fd, &inset) && icmpd_peek(d)) {
struct icmpd_received msg = icmpd_recv(d);
printf("Recv: %zu\n", msg.length);
xxd(stdout, msg.data, msg.length);
}
}
}
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