步骤2中，测试机不能自动重连至Test
3 预期结果步骤2中，测试机可以自动重连至Test
4 调查过程 4.1 NetworkMonitor.java：：private class EvaluatingState extends State ．．．．．．int httpResponseCode = isCaptivePortal();if (httpResponseCode == 204) { transitionTo(mValidatedState);} else if (httpResponseCode >= 200 && httpResponseCode <= 399) { transitionTo(mCaptivePortalState);}．．．．．． 4.2 NetworkMonitor.java：：protected int isCaptivePortal() ......validationLog("isCaptivePortal: ret=" + httpResponseCode + " headers=" + urlConnection.getHeaderFields());......如上打印如下的log
11-28 19:22:06.682 3474 7290 D NetworkMonitor/NetworkAgentInfo [WIFI () - 101]: isCaptivePortal: ret=200 headers={null=[HTTP/1.1 200 OK], Content-Length=[488],Content-Type=[text/html], Location=[https://sprdwlc.spreadtrum.com/fs/customwebauth/login.html ? switch_url=https://sprdwlc.spreadtrum.com/login.html&ap_mac=64:f6:9d:66:3c:20&client_mac=40:45:da:c1:87:2c&wlan=Test&redirect=connectivitycheck.gstatic.com/generate_204], X-Android-Received-Millis=[1480332126681], X-Android-Response-Source=[NETWORK 200], X-Android-Selected-Protocol=[http/1.1], X-Android-Sent-Millis=[1480332126662]} 4.3 NetworkMonitor.java：：private class CaptivePortalState extends State ．．．．．．public void enter() { mConnectivityServiceHandler.sendMessage(obtainMessage(EVENT_NETWORK_TESTED, NETWORK_TEST_RESULT_INVALID, 0, mNetworkAgentInfo));．．．．．． 4.4 ConnectivityService.java：：case NetworkMonitor.EVENT_NETWORK_TESTED: ．．．．．．final boolean valid = (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID);．．．．．．// Let the NetworkAgent know the state of its networknai.asyncChannel.sendMessage( android.net.NetworkA从如下的log开始:gent.CMD_REPORT_NETWORK_STATUS, (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 0, null);．．．．．． 4.5 WifiStateMachine.java::protected void networkStatus() ..... mIsCaptivePortalCheckEnabled = Settings.Global.getInt(mContext.getContentResolver(), Settings.Global.CAPTIVE_PORTAL_DETECTION_ENABLED, 0) == 1;if (status == NetworkAgent.INVALID_NETWORK) { if (DBG) log("WifiNetworkAgent -> Wifi networkStatus invalid, score=" + Integer.toString(mWifiInfo.score)); unwantedNetwork(NETWORK_STATUS_UNWANTED_VALIDATION_FAILED);}..... 4.6 WifiStateMachine.java:void unwantedNetwork() ......sendMessage(CMD_UNWANTED_NETWORK, reason);...... 4.7 WifiStateMachine.java::case CMD_UNWANTED_NETWORK: ......} else if (message.arg1 == NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN || message.arg1 == NETWORK_STATUS_UNWANTED_VALIDATION_FAILED) { config = getCurrentWifiConfiguration(); if (config != null) { // Disable autojoin if (message.arg1 == NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN) { config.validatedInternetAccess = false; // Clear last-selected status, as being last-selected also avoids // disabling auto-join. if (mWifiConfigStore.isLastSelectedConfiguration(config)) { mWifiConfigStore.setLastSelectedConfiguration( WifiConfiguration.INVALID_NETWORK_ID); } } config.numNoInternetAccessReports += 1; config.dirty = true; mWifiConfigStore.writeKnownNetworkHistory(false); }}..... 4.8 WifiAutoJoinController.java ::boolean attemptAutoJoin()最终在ＡｕｔｏＣｏｎｎｅｔ的时候在如下的地方被退出．没有进行ＡｕｔｏＣｏｎｎｅｃｔ．
// NOTE: If this condition is updated, update NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN.if (config.numNoInternetAccessReports > 0 && !isLastSelected && !config.validatedInternetAccess) { // Avoid autoJoining this network because last time we used it, it didn't // have internet access, and we never manage to validate internet access on this // network configuration if (DBG) { logDbg("attemptAutoJoin skip candidate due to no InternetAccess " + config.configKey(true) + " num reports " + config.numNoInternetAccessReports); } continue;}
如上打印出如下的log:11-28 19:22:28.378 3474 5227 D WifiAutoJoinController : attemptAutoJoin() num recent config 1 ---> suppNetId=-111-28 19:22:28.378 3474 5227 D WifiAutoJoinController : attemptAutoJoin good candidate seen, bumped hard -> status="Test"NONE status=011-28 19:22:28.378 3474 5227 D WifiAutoJoinController : attemptAutoJoin skip candidate due to no InternetAccess "Test"NONE num reports 111-28 19:22:28.378 3474 5227 D WifiAutoJoinController : attemptRoam not associated 5 解决方案
如果需要关闭网络可用性检测.请修改"captive_portal_detection_enabled"的默认值为0.
NetworkMonitor.java :: public NetworkMonitor()mIsCaptivePortalCheckEnabled = Settings.Global.getInt(mContext.getContentResolver(), Settings.Global.CAPTIVE_PORTAL_DETECTION_ENABLED, 0) == 1;
