wifi

I want to learn about how nl80211 and cfg80211 works in detail. Function flow, how nl80211 interact with network tools like wpa_supplicant , iw . Plz suggest me some useful links or books to refer. To be able to control wireless drivers from userspace, some IPC communication processes between kernel and userspace are used. At first ioctl with vendor dependent APIs was used. In 1996, Jean Tourrilhes creates wireless extensions (WE or WEXT). The Wireless Extension (WE) is a generic API allowing a driver to expose to the user space configuration and statistics specific to common Wireless LANs. In

can i disable wifi in iphone simultaor to test my app? I disconnect pc from network, but the icon of wifi on iphone simulator is always on. After disabling your network connection, the icon is still present showing it as enabled, but the connection is of course dead. If you are using the Reachability class or just attempting to ping a URL to verify a connection, the simulator will respond the same way a device with disabled Wifi would, which makes testing on the simulator under these conditions pretty accurate. 来源： https://stackoverflow.com/questions/6001253/wifi-on-iphone-simulator

I am calling a web service from BlackBerry using J2ME code. When I try to open a connection using HttpConnection , it is checking only the GPRS connection. Now, I want to check the Wi-Fi connection and call a webservice through Wi-Fi. The following code is my connection section. How to change the code for a Wi-Fi connection? public boolean HttpUrl() { HttpConnection conn = null; OutputStream out = null; String url = "http://www.google.com"; try { conn = (HttpConnection) new ConnectionFactory().getConnection(url).getConnection(); if (conn != null) { conn.setRequestMethod(HttpConnection.POST);

I am developing an app that needs to use both wifiLock and wakeLock so the audio streaming when the screen is off does not get disturbed. I have tried my app on Android 2.3 and wakeLock and looks like wifiLock work as expected so there is no difference between when the screen is on or off, but the same app on Android 4.2 (Jelly-bean) when the screen goes off is not working as well and the audio gets choppy which shows either wakeLock or wifiLock are not working correctly. Is there any reason for this? Here is how I acquire and release the locks, in my main activity I have: @Override public

在安装玩ubuntu 15.04之后，发现不能识别笔记本的无线网卡。点击 系统设置->软件和更新->附加驱动。安装里面推荐的无线网卡驱动时，发现点击com 802.11 Linux STA 无线驱动源代码。在应用更改后，还是跳到了不适用设备选项上。 于是采用下面步骤开始解决问题： lspci -vvnn | grep 14e4 查看无线网卡信息。 03:00.0 Network controller [0280]: Broadcom Corporation BCM4312 802.11b/g LP-PHY [ 14e4:4315 ] (rev 01) 卡型号 BCM4312 BCI ID 14e4:4315 无线网络设备型号4315 然后依次执行以下指令。 ~$ sudo apt-get update ~$ sudo apt-get install bcmwl-kernel-source 第一个命令时更新系统，无法更新也没关系。 主要是第二个命令，添加一个源。 ~$ sudo modprobe -r b43 ssb wl ~$ sudo modprobe wl 接着安装驱动，驱动安装完毕后，重启电脑。 重启后发现 系统设置->软件和更新->附加驱动 中无线网卡已经选中了 com 802.11 Linux STA 无线驱动源代码。 系统设置->网络 里面也有无线的按钮