关于服务端设置了IPV6时，Android请求网络超慢的问题记录

原因

Android会优先选择ipv6 的进行dns的处理,具体为啥会慢，还在探索中…，也请大神们指教一下，多谢?

解决方式

重置Android的线路选择，优先选择ipv4（基于okhttp）
代码

  OkHttpClient.Builder builder = new OkHttpClient().newBuilder()               .readTimeout(60, TimeUnit.SECONDS)               .writeTimeout(60, TimeUnit.SECONDS)               .connectTimeout(30, TimeUnit.SECONDS)               .dns(new EngDNS())

class EngDNS implements Dns {        @Override        public List lookup(String hostname) throws UnknownHostException {            if (TextUtils.isEmpty(hostname)) {                return Dns.SYSTEM.lookup(hostname);            } else {                try {                    List inetAddressList = new ArrayList<>();                    InetAddress[] inetAddresses = InetAddress.getAllByName(hostname);                    for (InetAddress inetAddress : inetAddresses) {                        if (inetAddress instanceof Inet4Address) {                            inetAddressList.add(0, inetAddress);                        } else {                            inetAddressList.add(inetAddress);                        }                    }                    return inetAddressList;                } catch (NullPointerException ex) {                    return Dns.SYSTEM.lookup(hostname);                }            }        }    }

原因

解决方式

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