happy-dns-objc

by qiniu

dns library for objective c

437 Stars 68 Forks Last release: 3 months ago (v0.3.17) MIT License 132 Commits 27 Releases

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Happy DNS for Objective-C

@qiniu on weibo LICENSE Build Status GitHub release codecov Platform

用途

调用系统底层Dns解析库,可以使用114 等第三方dns解析,也可以集成dnspod等httpdns。另外也有丰富的hosts 域名配置。

安装

通过CocoaPods

pod "HappyDNS"

运行环境

使用方法

* 返回IP列表

 NSMutableArray *array = [[NSMutableArray alloc] init];
[array addObject:[QNResolver systemResolver]];
[array addObject:[[QNResolver alloc] initWithAddress:@"119.29.29.29"]];
QNDnsManager *dns = [[QNDnsManager alloc] init:array networkInfo:[QNNetworkInfo normal]];
NSArray *ips = [dns query:@"www.qiniu.com"];
* url 请求,返回一个IP 替换URL 里的domain
NSMutableArray *array = [[NSMutableArray alloc] init];
[array addObject:[QNResolver systemResolver]];
[array addObject:[[QNResolver alloc] initWithAddress:@"119.29.29.29"]];
QNDnsManager *dns = [[QNDnsManager alloc] init:array networkInfo:[QNNetworkInfo normal]];
NSURL *u = [[NSURL alloc] initWithString:@"rtmp://www.qiniu.com/abc?q=1"];
NSURL *u2 = [dns queryAndReplaceWithIP:u];
* 兼容 getaddrinfo, 方便底层C代码接入
static QNDnsManager *dns = nil;
dns = [[QNDnsManager alloc] init:@[ [QNResolver systemResolver] ] networkInfo:nil];
[QNDnsManager setGetAddrInfoBlock:^NSArray *(NSString *host) {
        return [dns query:host];
    }];
struct addrinfo hints = {0};
struct addrinfo *ai = NULL;
int x = qn_getaddrinfo(host, "http", &hints, &ai);
qn_freeaddrinfo(ai); // 也可以用系统的freeaddrinfo, 代码一致,不过最好用这个

运行测试

$ xctool -workspace HappyDNS.xcworkspace -scheme "HappyDNS_Mac" -sdk macosx -configuration Release test -test-sdk macosx

指定测试

可以在单元测试上修改,熟悉使用


常见问题

  • 如果碰到其他编译错误,请参考 CocoaPods 的 troubleshooting
  • httpdns 在ios8 时不支持 nat64 模式下 IP 直接访问url,原因是 NSUrlConnection 不支持。无论是用http://119.29.29.29/d 还是http://[64:ff9b::771d:1d1d]/d 都不行,此时可以使用localdns方式。
  • 如果软件有国外的使用情况时,建议初始化程序采取这样的方式
    Objective-C
    QNDnsManager *dns;
    if([QNDnsManager needHttpDns]){
    NSMutableArray *array = [[NSMutableArray alloc] init];
    [array addObject:[[QNResolver alloc] initWithAddress:@"119.29.29.29"]];
    [array addObject:[QNResolver systemResolver]];
    dns = [[QNDnsManager alloc] init:array networkInfo:[QNNetworkInfo normal]];
    }else{
    NSMutableArray *array = [[NSMutableArray alloc] init];
    [array addObject:[QNResolver systemResolver]];
    [array addObject:[[QNResolver alloc] initWithAddress:@"8.8.8.8"]];
    dns = [[QNDnsManager alloc] init:array networkInfo:[QNNetworkInfo normal]];
    }
    

代码贡献

详情参考代码提交指南

贡献记录

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代码许可

The MIT License (MIT).详情见 License文件.

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