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// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_COMMON_NET_NET_ERROR_INFO_H_
#define CHROME_COMMON_NET_NET_ERROR_INFO_H_
namespace chrome_common_net {
// The status of a DNS probe that the NetErrorTabHelper may or may not have
// started.
//
// The DNS_PROBE_FINISHED_* values are used in histograms, so:
// 1. FINISHED_UNKNOWN must remain the first FINISHED_* value.
// 2. FINISHED_* values must not be rearranged relative to FINISHED_UNKNOWN.
// 3. New FINISHED_* values must be inserted at the end.
// 4. New non-FINISHED_* values cannot be inserted.
enum DnsProbeStatus {
// A DNS probe may be run for this error page. (This status is only used on
// the renderer side before it's received a status update from the browser.)
DNS_PROBE_POSSIBLE,
// A DNS probe will not be run for this error page. (This happens if the
// user has the "Use web service to resolve navigation errors" preference
// turned off, or if probes are disabled by the field trial.)
DNS_PROBE_NOT_RUN,
// A DNS probe has been started for this error page. The renderer should
// expect to receive another IPC with one of the FINISHED statuses once the
// probe has finished (as long as the error page is still loaded).
DNS_PROBE_STARTED,
// A DNS probe has finished with one of the following results:
// The probe was inconclusive.
DNS_PROBE_FINISHED_INCONCLUSIVE,
// There's no internet connection.
DNS_PROBE_FINISHED_NO_INTERNET,
// The DNS configuration is wrong, or the servers are down or broken.
DNS_PROBE_FINISHED_BAD_CONFIG,
// The DNS servers are working fine, so the domain must not exist.
DNS_PROBE_FINISHED_NXDOMAIN,
DNS_PROBE_MAX
};
// Returns a string representing |status|. It should be simply the name of
// the value as a string, but don't rely on that. This is presented to the
// user as part of the DNS error page (as the error code, at the bottom),
// and is also used in some verbose log messages.
//
// |status| is an int because error codes are ints by the time they get to the
// localized error system, and we don't want to require the caller to cast back
// to a probe status. The function will NOTREACHED() and return an empty
// string if given an int that does not match a value in DnsProbeStatus (or if
// it is DNS_PROBE_MAX, which is not a real status).
const char* DnsProbeStatusToString(int status);
// Returns true if |status| is one of the DNS_PROBE_FINISHED_* statuses.
bool DnsProbeStatusIsFinished(DnsProbeStatus status);
// The error domain used to pass DNS probe statuses to the localized error
// code.
extern const char kDnsProbeErrorDomain[];
} // namespace chrome_common_net
#endif // CHROME_COMMON_NET_NET_ERROR_INFO_H_
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