change dependency: HappyDNS ~> 0.3.17

Author: YangSen-qn

Podfile

@@ -1,7 +1,7 @@
 source 'https://github.com/CocoaPods/Specs.git'
 
 def shared_dependencies
-  pod 'HappyDNS', '0.3.16'
+  pod 'HappyDNS', '0.3.17'
 end
 
 def test_dependencies

Qiniu.podspec

@@ -13,7 +13,8 @@ Pod::Spec.new do |s|
   s.source_files = "QiniuSDK/**/*.{h,m}"
   s.requires_arc = true
   s.libraries = 'z'
-  s.dependency 'HappyDNS', '~> 0.3.16'
+  #s.dependency 'HappyDNS', '~> 0.3.17'
+  s.dependency 'HappyDNS', '0.3.17'
   s.license = { :type => "MIT", :text => <<-LICENSE
 The MIT License (MIT)
 

QiniuSDK/Http/Dns/QNDnsPrefetcher.m

@@ -321,7 +321,7 @@ - (void)endPreFetch{
 
 - (void)preFetchHosts:(NSArray <NSString *> *)fetchHosts{
 
-    self.httpDns.defalutTtl = kQNGlobalConfiguration.dnsCacheTime;
+    self.httpDns.defaultTtl = kQNGlobalConfiguration.dnsCacheTime;
 
     NSArray *nextFetchHosts = fetchHosts;