dns.c File Reference

DNS resolution utilities implementation. More...

Go to the source code of this file.

Functions
bool	dns_test_connectivity (const char *hostname)

Detailed Description

DNS resolution utilities implementation.

Definition in file dns.c.

Function Documentation

dns_test_connectivity()

bool dns_test_connectivity

(

const char *

hostname

)

Definition at line 11 of file dns.c.

                                                 {
  if (!hostname) {
    log_warn("NULL hostname provided to DNS connectivity test");
    return false;
  }
 
  struct addrinfo hints, *result = NULL;
  memset(&hints, 0, sizeof(hints));
  hints.ai_family = AF_INET; // IPv4
  hints.ai_socktype = SOCK_STREAM;
 
  log_debug("Testing DNS connectivity to %s...", hostname);
 
  int ret = getaddrinfo(hostname, "443", &hints, &result);
  if (ret != 0) {
    log_warn("DNS resolution failed for %s: %s", hostname, gai_strerror(ret));
    return false;
  }
 
  if (result) {
    freeaddrinfo(result);
  }
 
  log_debug("DNS connectivity test succeeded for %s", hostname);
  return true;
}

Referenced by update_check_perform().