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#include <stdio.h>
#include <stdbool.h>
#include <stdlib.h>
#include <ctype.h>
#include <unistd.h>
#include "icmp_server.h"
#include "util.h"
int main(void) {
int sock = icmp_server_open_socket();
if (sock < 0) {
perror("icmp_server_open_socket");
return 1;
}
while (true) {
struct icmp_incoming msg = icmp_server_receive(sock);
if (msg.data == NULL) {
perror("icmp_server_communicate");
return 1;
}
printf("Received: id %d seqnum %d data:\n", msg.id, msg.seqnum);
xxd(msg.data, msg.length);
char data[msg.length + 1];
for (size_t i = 0; i < msg.length; i++) {
data[i] = toupper(msg.data[i]);
}
data[msg.length] = '!';
if (icmp_server_send_reply(sock, msg.source_addr, msg.id, msg.seqnum, data, msg.length + 1) < 0) {
perror("icmp_server_send_reply");
}
}
close(sock);
}
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