[jira] [Created] (TS-4578) Skip HostDB lookup for all address literals

["James Peach (JIRA)" <ji...@apache.org>]

James Peach created TS-4578:
-------------------------------

             Summary: Skip HostDB lookup for all address literals
                 Key: TS-4578
                 URL: https://issues.apache.org/jira/browse/TS-4578
             Project: Traffic Server
          Issue Type: Improvement
          Components: Core, DNS
            Reporter: James Peach


In {{HttpSM.cc}}:

{code}
    if ((strncmp(t_state.dns_info.lookup_name, "127.0.0.1", 9) == 0 || strncmp(t_state.dns_info.lookup_name, "::1", 3) == 0) &&
        ats_ip_pton(t_state.dns_info.lookup_name, t_state.host_db_info.ip()) == 0) {
      // If it's 127.0.0.1 or ::1 don't bother with hostdb
      DebugSM("dns", "[HttpTransact::HandleRequest] Skipping DNS lookup for %s because it's loopback",
              t_state.dns_info.lookup_name);
      t_state.dns_info.lookup_success = true;
      call_transact_and_set_next_state(NULL);
      break;
{code}

There's no reason to restrict address literals to loopback. It seems like we should be able to do this for all address literals.



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