3g

charles 设置弱网测试 一款APP针对不同网络情况下都需要保证不会Crash，同时尽可能做到在弱网情况下也能达到功能正常使用，或者使用体验达到最佳。 我们借助Charles工具做弱网的测试，或者模拟2G、3G的网络情况。 Charles的使用方法如下： 首先，打开Charles，在Throttle Settings中设置网络状况，比如： 1、点击Proxy->Throttling Settings 2、☑️勾选［Enable Throttling］使的限制网速可用，相当于开启了限制网速的功能 3、关于网速的选择 概念介绍：Bandwidth（带宽）、Utilistation（利用百分比）、Round-trip（往返延迟）、MTU（最大传输单元） 3G：300k-2Mbps左右 2.5G(GPRS)一般在100kbps 2G（GSM）一般在5-9kbps 如果不习惯自定义设置带宽等，可直接在Throttle Preset下拉列表中选择，按照顺序，网速逐渐提升 3.3如果只想对某地址的请求进行弱网测试，☑️［Only for selected hosts］ 然后，打开Sequence查看每个请求的执行情况，比如： 上图中可以看到每个请求的大小（size），以及请求的状况（status）。 PS：弱网、2G、3G建议的上下行速率如下，同时还可以控制丢包率的数据 网络 上行 下行

I'm running Ubuntu 11.04 and a ZTE 3G modem. The modem is dialed with WvDial When the modem is not in use by WvDial I can send AT commands to the modem, and get information like signal strength: AT+ZCSQ +ZCSQ: 1, -87 OK But when WvDial is using the modem, /dev/ttyUSB0 is locked and I can't query it. Am I missing something obvious? Is there any way I can configure the modem, WvDial , or pyserial so I can send AT commands to the modem while it's connected? Ah. Apparently this modem exposes a couple of ttys to work with. I was able to use /dev/ttyUSB1 to sent AT commands while WvDial was

I'm developing an Android app which needs to download a lot of data. To improve the usability, I'd like to measure the data traffic my app produces and give the users a hint if the app downloaded a specific amount of data. My current idea: Sum all downloaded bytes together and react on a specified limit. However, as I downloaded things in many different situations and in many different positions in the code, is there any other possibility to measure the data usage per app? AFAIK, sys/net/NETINTERFACE/statistics/rx_bytes reports the total amount of the whole system, so this is not a solution.

I'm trying to detect what kind of network connection I'm connected to. is it WiFi or 3G? is there a way to do that using c# win forms .net 2.0 or 4.0 ? foreach (NetworkInterface adapter in adapters) { if (adapter.OperationalStatus == OperationalStatus.Up) { if (adapter.NetworkInterfaceType == NetworkInterfaceType.Wireless80211) { lblNetworkType.Text = "you are using WiFi"; break; } else if (adapter.NetworkInterfaceType == NetworkInterfaceType.Ppp) { lblNetworkType.Text = "you are using 3G or ADSL or Dialup"; break; } else if (adapter.NetworkInterfaceType == NetworkInterfaceType.Ethernet) {

I am trying to get the signal strength in dBm for the carrier, wifi, 3g, and 4g. I am currently using this code to get the carrier's and wifi from the status bar and I would like to know if there is another way or a better way? Also how could I get it for 3g and 4g? UIApplication *app = [UIApplication sharedApplication]; NSArray *subviews = [[[app valueForKey:@"statusBar"] valueForKey:@"foregroundView"] subviews]; NSString *dataNetworkItemView = nil; NSString *wifiNetworkItemView = nil; for (id subview in subviews) { if([subview isKindOfClass:[NSClassFromString(@