cnzz站长统计怎么添加到博客网站,网站制作软件免费下载,广告经营许可证,做网站建设的利润Android13 实现有线网络和wifi共存 文章目录 Android13 实现有线网络和wifi共存一、前言二、修改代码#xff1a;1、ConnectivityService.java2、NetworkFactoryImpl.java3、Android11 和Android13 修改代码目录对比#xff1a;4、如果只修改部分代码的后果只修改 Connectivi…Android13 实现有线网络和wifi共存 文章目录 Android13 实现有线网络和wifi共存一、前言二、修改代码1、ConnectivityService.java2、NetworkFactoryImpl.java3、Android11 和Android13 修改代码目录对比4、如果只修改部分代码的后果只修改 ConnectivityService.java不修改 NetworkFactoryImpl.java 的情况只修改 NetworkFactoryImpl.java不修改 ConnectivityService.java 的情况 三、网络共存验证1、窗口命令查看1ifconfig2ping -I 节点名称 ip/url3dumpsys connectivity 2、代码查看 一、前言
Android一些的定制设备比如商显大屏或者Android盒子一般是wifi或者有线网络。 Android 系统Framework进行一定适配后可以实现wifi和有线网络端口都打开的 进而在App端即可实现通过代码控制选择使用wifi或者有线网络进行网络请求。
Android11 上Wifi和有线网共存已经有介绍 https://blog.csdn.net/wenzhi20102321/article/details/133913924
Android13 上代码有较大差别这里也进行记录和介绍。
二、修改代码
Android13下面两个代码都要修改不然会有点bug
1、ConnectivityService.java
packages\modules\Connectivity\service\src\com\android\server\ConnectivityService.java private void teardownUnneededNetwork(NetworkAgentInfo nai) {if (nai.numRequestNetworkRequests() ! 0) {for (int i 0; i nai.numNetworkRequests(); i) {NetworkRequest nr nai.requestAt(i);// Ignore listening and track default requests.if (!nr.isRequest()) continue;loge(Dead network still had at least nr);break;}}loge(no to disconnect! );//mychange//nai.disconnect();}ConnectivityService.java 里面还有一个地方有调用 nai.disconnect()最后也注释掉。
2、NetworkFactoryImpl.java
frameworks\libs\net\common\device\android\net\NetworkFactoryImpl.java private void handleRemoveRequest(NetworkRequest request) {NetworkRequestInfo n mNetworkRequests.get(request);mParent.log( handleRemoveRequest no do !); //mychangeif (n ! null) {//mNetworkRequests.remove(request);//if (n.requested) mParent.releaseNetworkFor(n.request);}}最好是添加一个prop属性记忆是否释放网络方便手动修改和调试类似下面的代码
import android.os.SystemProperties;boolean isReleaseNetwork SystemProperties.getBoolean(persist.demo.release_network, false);Log.e(TAG, disconnect isReleaseNetwork isReleaseNetwork);if (!isReleaseNetwork) {return;}两个地方都加上属性判断
3、Android11 和Android13 修改代码目录对比
文件修改目录
//Android11
frameworks\base\services\core\java\com\android\server\ConnectivityService.java
frameworks\libs\net\common\src_servicescommon\android\net\NetworkFactory.java//Android13
packages\modules\Connectivity\service\src\com\android\server\ConnectivityService.java
frameworks\libs\net\common\device\android\net\NetworkFactoryImpl.java可以看到里面的代码目录完全不一样的 并且里面的代码实现也是有非常大的差异有兴趣的可以自己研究看看。
4、如果只修改部分代码的后果
这里只说Android13 是上的Android11 的比较久没动了记不清了
只修改 ConnectivityService.java不修改 NetworkFactoryImpl.java 的情况
刚开始是可以同时连接上的但是你发现断开后无法再连接上wifi 因为相关请求已经被移除了低优先级的网络无法再重新连接 具体为啥无法再连接没有进一步具体分析有兴趣的可以去看看。
只修改 NetworkFactoryImpl.java不修改 ConnectivityService.java 的情况
Wifi和有线网是可以同时连接的但是Wifi会每过几秒就会断开重连
从日志看有 ConnectivityService 和 NetworkAgent 的相关日志
10-18 15:18:49.999 636 802 D ConnectivityService: handleLingerComplete for [143 WIFI]
10-18 15:18:50.000 636 794 D WifiNetworkAgent: NetworkAgent: NetworkAgent channel lost //网络断开的关键
10-18 15:18:50.000 636 802 D ConnectivityService: [143 WIFI] disconnected, was satisfying 10
每几秒重复一次上面的日志
如果你在 ConnectivityService.teardownUnneededNetwork 方法添加日志发现会执行到 nai.disconnect();
所以循环断开是系统流程里面导致的。具体哪里开始的可以基于日志分析这里不展开介绍。
三、网络共存验证
1、窗口命令查看
1ifconfig
图片
内容
console:/ #
console:/ # ifconfig
lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope: HostUP LOOPBACK RUNNING MTU:65536 Metric:1RX packets:33 errors:0 dropped:0 overruns:0 frame:0 TX packets:33 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:2898 TX bytes:2898 eth0 Link encap:Ethernet HWaddr 42:6b:39:d7:49:75 Driver rk_gmac-dwmacinet addr:192.168.31.174 Bcast:192.168.31.255 Mask:255.255.255.0 inet6 addr: fe80::42ff:4f65:13fe:20fa/64 Scope: LinkUP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1RX packets:558 errors:0 dropped:0 overruns:0 frame:0 TX packets:135 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:40961 TX bytes:20403 Interrupt:78 wlan0 Link encap:Ethernet HWaddr 0c:cf:89:a6:44:2a Driver usbinet addr:192.5.1.34 Bcast:192.5.1.255 Mask:255.255.255.0 inet6 addr: fe80::2e43:706c:c30b:f9c8/64 Scope: LinkUP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1RX packets:812 errors:0 dropped:0 overruns:0 frame:0 TX packets:95 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:3000 RX bytes:142061 TX bytes:17362 console:/ #
可以看到 wlan0 和 eth0 都是存在ip地址的。
2ping -I 节点名称 ip/url
测试通过节点对应的网络访问某个ip
130|console:/ #
130|console:/ # ping wwwbaidu.com
PING wwwbaidu.com (45.194.224.35) 56(84) bytes of data.
64 bytes from 45.194.224.35: icmp_seq1 ttl43 time13.6 ms
64 bytes from 45.194.224.35: icmp_seq2 ttl43 time13.4 ms
64 bytes from 45.194.224.35: icmp_seq3 ttl43 time38.7 ms
64 bytes from 45.194.224.35: icmp_seq4 ttl43 time13.5 ms
^C
--- wwwbaidu.com ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3004ms
rtt min/avg/max/mdev 13.452/19.851/38.744/10.908 ms
console:/ #
console:/ #
console:/ # ping -I eth0 www.baidu.com
PING www.a.shifen.com (157.148.69.80) from 192.168.31.174 eth0: 56(84) bytes of data.
64 bytes from 157.148.69.80: icmp_seq1 ttl46 time15.0 ms
64 bytes from 157.148.69.80: icmp_seq2 ttl46 time14.5 ms
64 bytes from 157.148.69.80: icmp_seq3 ttl46 time15.2 ms
64 bytes from 157.148.69.80: icmp_seq4 ttl46 time14.6 ms
^C
--- www.a.shifen.com ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3004ms
rtt min/avg/max/mdev 14.580/14.877/15.257/0.294 ms
console:/ #
console:/ # ping -I wlan0 www.baidu.com
PING www.a.shifen.com (157.148.69.80) from 192.5.1.34 wlan0: 56(84) bytes of data.
64 bytes from 157.148.69.80: icmp_seq1 ttl41 time478 ms
64 bytes from 157.148.69.80: icmp_seq2 ttl41 time99.9 ms
64 bytes from 157.148.69.80: icmp_seq3 ttl41 time89.0 ms
64 bytes from 157.148.69.80: icmp_seq4 ttl41 time96.1 ms
^C
--- www.a.shifen.com ping statistics ---
5 packets transmitted, 4 received, 20% packet loss, time 4005ms
rtt min/avg/max/mdev 89.084/191.015/478.886/166.248 ms
console:/ #
这里可以看到有线网和wifi都是对外正常进行通讯的。
3dumpsys connectivity
这里会有比较多的连接信息主要信息如下
console:/ #
console:/ #
console:/ # dumpsys connectivityCurrent Networks:
//wifi 相关信息NetworkAgentInfo{network{100} handle{432902426637} ni{WIFI CONNECTED extra: } Score(60 ; KeepConnected : 0 ; Policies : TRANSPORT_PRIMARYEVER_VALIDATED_NOT_AVOIDED_WHEN_BADIS_UNMETEREDIS_VALIDATED) created everValidated lastValidated lp{{InterfaceName: wlan0 LinkAddresses: [ fe80::2e43:706c:c30b:f9c8/64,192.5.1.34/24 ] DnsAddresses: [ /192.5.1.1 ] Domains: null MTU: 0 ServerAddress: /192.5.1.1 TcpBufferSizes: 524288,1048576,2097152,262144,524288,1048576 Routes: [ fe80::/64 - :: wlan0 mtu 0,192.5.1.0/24 - 0.0.0.0 wlan0 mtu 0,0.0.0.0/0 - 192.5.1.1 wlan0 mtu 0 ]}} nc{[ Transports: WIFI Capabilities: NOT_METEREDINTERNETNOT_RESTRICTEDTRUSTEDNOT_VPNVALIDATEDNOT_ROAMINGFOREGROUNDNOT_CONGESTEDNOT_SUSPENDEDNOT_VCN_MANAGED LinkUpBandwidth12000Kbps LinkDnBandwidth30000Kbps Specifier: WifiNetworkAgentSpecifier [WifiConfiguration, SSIDVPN, BSSID34:f7:16:92:87:6c, band1, mMatchLocalOnlySpecifiersfalse] TransportInfo: SSID: VPN, BSSID: 34:f7:16:92:87:6c, MAC: 0c:cf:89:a6:44:2a, IP: /192.5.1.34, Security type: 2, Supplicant state: COMPLETED, Wi-Fi standard: 4, RSSI: -51, Link speed: 270Mbps, Tx Link speed: 270Mbps, Max Supported Tx Link speed: 300Mbps, Rx Link speed: -1Mbps, Max Supported Rx Link speed: 300Mbps, Frequency: 2442MHz, Net ID: 0, Metered hint: false, score: 60, isUsable: true, CarrierMerged: false, SubscriptionId: -1, IsPrimary: 1, Trusted: true, Restricted: false, Ephemeral: false, OEM paid: false, OEM private: false, OSU AP: false, FQDN: none, Provider friendly name: none, Requesting package name: noneVPNwpa2-pskMLO Information: , AP MLD Address: none, AP MLO Link Id: none, AP MLO Affiliated links: none SignalStrength: -51 OwnerUid: 1000 AdminUids: [1000] SSID: VPN UnderlyingNetworks: Null]} factorySerialNumber6}Requests: REQUEST:0 LISTEN:9 BACKGROUND_REQUEST:0 total:9NetworkRequest [ LISTEN id5, [ Capabilities: FOREGROUND RequestorUid: 1000 RequestorPkg: android UnderlyingNetworks: Null] ]Inactivity Timers:Nat464Xlat:not start
//有线网相关信息NetworkAgentInfo{network{101} handle{437197393933} ni{Ethernet CONNECTED extra: 42:6b:39:d7:49:75} Score(-2147483648 ; KeepConnected : 0 ; Policies : EVER_VALIDATED_NOT_AVOIDED_WHEN_BADIS_UNMETEREDIS_VALIDATED) created everValidated lastValidated lp{{InterfaceName: eth0 LinkAddresses: [ fe80::42ff:4f65:13fe:20fa/64,192.168.31.174/24 ] DnsAddresses: [ /192.168.31.1 ] Domains: null MTU: 0 ServerAddress: /192.168.31.1 TcpBufferSizes: 524288,1048576,3145728,524288,1048576,2097152 Routes: [ fe80::/64 - :: eth0 mtu 0,192.168.31.0/24 - 0.0.0.0 eth0 mtu 0,0.0.0.0/0 - 192.168.31.1 eth0 mtu 0 ]}} nc{[ Transports: ETHERNET Capabilities: NOT_METEREDINTERNETNOT_RESTRICTEDTRUSTEDNOT_VPNVALIDATEDNOT_ROAMINGFOREGROUNDNOT_CONGESTEDNOT_SUSPENDEDNOT_VCN_MANAGED LinkUpBandwidth100000Kbps LinkDnBandwidth100000Kbps Specifier: EthernetNetworkSpecifier (eth0) UnderlyingNetworks: Null]} factorySerialNumber1}Requests: REQUEST:10 LISTEN:7 BACKGROUND_REQUEST:0 total:17NetworkRequest [ REQUEST id1, [ Capabilities: INTERNETNOT_RESTRICTEDTRUSTEDNOT_VPNNOT_VCN_MANAGED RequestorUid: 1000 RequestorPkg: android UnderlyingNetworks: Null] ]NetworkRequest [ LISTEN id5, [ Capabilities: FOREGROUND RequestorUid: 1000 RequestorPkg: android UnderlyingNetworks: Null] ]Inactivity Timers:Nat464Xlat:not start
这里可以看到 Wifi 和有线网都要相关信息和不同的ip 这里和Android11 有个非常不同的是Android 有线网没有 Score 值 这里值显示的是int 的最小值。但是还是有线网优先的 Android11 上是可以看到 Score 的值为 70代码上明显定义的Android13 上未定义 所以如果Android13 上要设置优先级估计就比较麻烦了。 如果确实要做优先级可以看 NetworkAgentInfo 对象里面的Score 值的定义线索进行分析。
2、代码查看
可以通过代码查看Wifi 和有线网的 Ip地址
//getIpAddress,第二个参数是决定是获取的wifi的ip地址还是有线网的ip地址public static String getIpAddress(Context context, boolean isGetWifiIp) {Network network null;if (isGetWifiIp) {network getWlanNet(context);} else {network getFirstEthernet(context);}if (network null) {return ;}ConnectivityManager mConnectivityManager (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);final LinkProperties linkProperties mConnectivityManager.getLinkProperties(network);if (linkProperties ! null) {for (LinkAddress linkAddress : linkProperties.getLinkAddresses()) {InetAddress inetAddress linkAddress.getAddress();if (inetAddress instanceof Inet4Address) {return inetAddress.getHostAddress();}}}return ;}//getFirstEthernetprivate static Network getFirstEthernet(Context context) {ConnectivityManager mConnectivityManager (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);final Network[] networks mConnectivityManager.getAllNetworks();for (final Network network : networks) {NetworkInfo networkInfo mConnectivityManager.getNetworkInfo(network);if (networkInfo ! null networkInfo.getType() ConnectivityManager.TYPE_ETHERNET) {return network;}}return null;}//getFirstWlanprivate static Network getWlanNet(Context context) {ConnectivityManager mConnectivityManager (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);final Network[] networks mConnectivityManager.getAllNetworks();for (final Network network : networks) {NetworkInfo networkInfo mConnectivityManager.getNetworkInfo(network);if (networkInfo ! null networkInfo.getType() ConnectivityManager.TYPE_WIFI) {return network;}}return null;}
通过上面的代码 getIpAddress 方法是可以分别获取到Wifi 和有线网的 Ip的
另外Java代码情况网络是可以指定特定网络通讯的这里不展开介绍。
有兴趣的可以看看 https://blog.csdn.net/wenzhi20102321/article/details/133950336
