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https://github.com/espressif/openthread.git
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Abtin Keshavarzian
037056b97e
This commit contains changes and enhancements in the DNS-SD
server/resolver class `Dns::ServiceDiscovery::Server`.
- It defines `Request` and `Response` structures, which contain all
related information for a DNS query request and response. These
structures simplify the code by encapsulating all the related
information in one place.
- The `Response` class provides methods for preparing the response,
such as appending records, DNS names to the response, or checking
the questions or updating the header. These methods replace the
previous `static` methods, which required all the information to be
passed as input parameters.
- The `QueryTransacation` type is simplified by declaring it as a
subclass of `Response`. It inherits all the helper methods from
`Response`. Other previously defined `static` methods are now
defined as methods of `QueryTransacation` (such as `CanAnswer()`).
- `ResolveBySrp()` and its related methods now directly populate the
DNS response code in the `Response` DNS header instead of returning
it.
- `ResolveBySrp()` is updated such that if a failure is encountered
when preparing the answer section, no further processing is
performed. This ensures that a previous failure `rcode` is not
overwritten. When preparing the additional section, certain
`rcode` failures are allowed, such as if the DNS name is not found.
- The processing of `Timer` is simplified, using `FiretAtIfEarlier()`
and determining next expire time from `HandleTimer()`.
- This commit also adds an empty implementation of the `otPlatDns{}`
functions (used with `OPENTHREAD_CONFIG_DNS_UPSTREAM_QUERY_ENABLE`)
under the simulation platform.
48 lines
2.0 KiB
C
48 lines
2.0 KiB
C
/*
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* Copyright (c) 2023, The OpenThread Authors.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holder nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "platform-simulation.h"
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#include <openthread/platform/dns.h>
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#if OPENTHREAD_CONFIG_DNS_UPSTREAM_QUERY_ENABLE
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void otPlatDnsStartUpstreamQuery(otInstance *aInstance, otPlatDnsUpstreamQuery *aTxn, const otMessage *aQuery)
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{
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OT_UNUSED_VARIABLE(aInstance);
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OT_UNUSED_VARIABLE(aTxn);
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OT_UNUSED_VARIABLE(aQuery);
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}
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void otPlatDnsCancelUpstreamQuery(otInstance *aInstance, otPlatDnsUpstreamQuery *aTxn)
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{
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otPlatDnsUpstreamQueryDone(aInstance, aTxn, NULL);
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}
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#endif
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