IPHONEOS_DEPLOYMENT_TARGET to 9.0 & fix some warning

Author: YangSen-qn

HappyDNS.podspec

@@ -7,8 +7,8 @@ Pod::Spec.new do |s|
   s.author       = 'Qiniu => sdk@qiniu.com'
   s.source       = {:git => 'https://github.com/qiniu/happy-dns-objc.git', :tag => "v#{s.version}"}
 
-  s.ios.deployment_target = '6.0'
-  s.osx.deployment_target = '10.8'
+  s.ios.deployment_target = '9.0'
+  s.osx.deployment_target = '10.10'
   s.libraries = 'resolv'
   s.source_files = 'HappyDNS/Common/*.{h,m}','HappyDNS/Dns/*.{h,m}','HappyDNS/Http/*.{h,m}','HappyDNS/Local/*.{h,m}','HappyDNS/Util/*.{h,m}','HappyDNS/HappyDNS.h'
   s.requires_arc = true

HappyDNS.xcodeproj/project.pbxproj

@@ -1028,7 +1028,7 @@
 				GCC_C_LANGUAGE_STANDARD = gnu11;
 				INFOPLIST_FILE = "$(SRCROOT)/HappyDNS-dynamic/Info.plist";
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
-				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.qiniu.HappyDNS;
 				PRODUCT_NAME = "$(TARGET_NAME:c99extidentifier)";
@@ -1072,7 +1072,7 @@
 				GCC_C_LANGUAGE_STANDARD = gnu11;
 				INFOPLIST_FILE = "$(SRCROOT)/HappyDNS-dynamic/Info.plist";
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
-				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.qiniu.HappyDNS;
 				PRODUCT_NAME = "$(TARGET_NAME:c99extidentifier)";
@@ -1142,8 +1142,8 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
-				MACOSX_DEPLOYMENT_TARGET = 10.8;
+				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
+				MACOSX_DEPLOYMENT_TARGET = 10.10;
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				PRODUCT_NAME = HappyDNS;
@@ -1180,8 +1180,8 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
-				MACOSX_DEPLOYMENT_TARGET = 10.8;
+				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
+				MACOSX_DEPLOYMENT_TARGET = 10.10;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				PRODUCT_NAME = HappyDNS;
 				SDKROOT = macosx;

HappyDNS/Http/QNDnspodEnterprise.m

@@ -82,13 +82,25 @@ - (NSArray *)query:(QNDomain *)domain networkInfo:(QNNetworkInfo *)netInfo error
         }
         return nil;
     }
+    
+    dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
+    
+    __block NSData *data = nil;
+    __block NSError *httpError = nil;
+    __block NSHTTPURLResponse *response = nil;
     NSString *url = [NSString stringWithFormat:@"http://%@/d?ttl=1&dn=%@&id=%@", [QNIP ipHost:_server], encrypt, _userId];
     NSURLRequest *urlRequest = [NSURLRequest requestWithURL:[NSURL URLWithString:url] cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:_timeout];
-    NSHTTPURLResponse *response = nil;
-    NSError *httpError = nil;
-    NSData *data = [NSURLConnection sendSynchronousRequest:urlRequest
-                                         returningResponse:&response
-                                                     error:&httpError];
+    NSURLSession *session = [NSURLSession sharedSession];
+    NSURLSessionTask *task = [session dataTaskWithRequest:urlRequest completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable resp, NSError * _Nullable error) {
+        
+        data = data;
+        httpError = error;
+        response = (NSHTTPURLResponse *)resp;
+        dispatch_semaphore_signal(semaphore);
+    }];
+    [task resume];
+    
+    dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
 
     if (httpError != nil) {
         if (error != nil) {

HappyDNS/Local/QNResolvUtil.m

@@ -64,7 +64,7 @@ int setup_dns_server(void *_res_state, NSString *dns_server, NSUInteger timeout)
         if ([QNIP isV6]) {
             freeaddrinfo(ai);
             ai = NULL;
-            bzero(&hints, 0);
+            bzero(&hints, (size_t)0);
             hints.ai_family = AF_UNSPEC;
             hints.ai_socktype = SOCK_STREAM;
             char buf[64] = {0};

Package.swift

@@ -7,7 +7,7 @@ let package = Package(
     name: "HappyDNS",
     platforms: [
         .macOS(.v10_10),
-        .iOS(.v8)
+        .iOS(.v9)
     ],
     products: [
         .library(