//
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// TuyaSmartHTTPDNS.h
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// TuyaSmartBaseKit
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//
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// Copyright (c) 2014-2021 Tuya Inc. (https://developer.tuya.com)
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#import <Foundation/Foundation.h>
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NS_ASSUME_NONNULL_BEGIN
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/// @brief TuyaSmartHTTPDNS is another solution for DNS query instead of system DNS service.
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///
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/// The DNS query can be done through http to prevent DNS cache pollution.
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@interface TuyaSmartHTTPDNS : NSObject
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+ (instancetype)sharedInstance;
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/// Asynchronous resolution interface, first query the cache, if it exists then return the result, if not return nil and asynchronous domain name resolution to update the cache.
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/// @param host Domain name (e.g. www.tuya.com).
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/// @return The resolution result corresponding to the domain name.
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- (NSString *)getIpWithHost:(NSString *)host;
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/// Set whether the domain name is downgraded or not.
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/// @param host Domain Name.
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/// @param enable Whether to downgrade.
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- (void)setDegradationWithHost:(NSString *)host enable:(BOOL)enable;
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@end
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NS_ASSUME_NONNULL_END
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