1, AFN can monitor the use of mobile phone network is more convenient than the official packaging of AppleYou can use AFN's third-party framework to monitor network status when checking network status later#import "HMViewController.h"#import "AFNetworking.h"@interfaceHmviewc
destination host is too busy to respond. In this case, you can try to ping the hosts on the other LAN. If the timeout does not exist during the ping process, then the local connection is good and you need to troubleshoot the problem host.The situation is as follows
PING 192.168.128.1 (192.168.128.1): Data bytes
Bytes from 192.168.128.1:icmp_seq=0 ttl=64 time=3.255 msBytes from 192.168.128.1:icmp_seq=1 ttl=64 time=0.897 msRequest Timeout for icmp_seq 2Request Timeout for icmp_seq 3B
The user's current network is available: WiFi, 2g/3g Network, users open and not open the network, and whether can be used is not the same thing. Can use refers to: users open the network and can connect to the Internet for Internet access.To detect if the current network is
IOS gets the network status, and ios gets the network
For iOS developers, obtaining the network status is often used.
-(NSString *) getNetWorkStates {UIApplication * app = [UIApplication sharedApplication]; NSArray * children = [[app valueForKeyPath: @ "statusBar"] valueFor
The iPhone determines the current network connection status, and the iphone current network connection
Import header files
#include
Determine the network connection status
// Determine the current network connection
In the network application, sometimes needs to the user equipment network state to carry on the real-time monitoring, has two purposes:(1) Let users understand their own network status, to prevent some misunderstandings (such as the use of strange applications incompetent)(2) According to the user's
has been doing SEO, but recently modified their own website title, because they are using the WordPress CMS, the optimization of Chengdu Network Marketing seems to be very difficult. But after a period of adjustment, Baidu snapshot normal update, included also began to rise, I began to have confidence, to see my initial distress-Baidu K station after the thinking--seo need to pay attention to the place to know my site's
First you need to add permissions
The code is as follows
Copy Code
Check the network status code as follows
The code is as follows
Copy Code
public boolean checknetworkstate (){Boolean flag = false;Connectivitymanager manager = (Connectivitymanager) getsystemservice (Context.connectivity_service);if (manager.getactivenetworkinfo ()!= null)
Web development is a very important part of Android programming, and today we share with you some of the experience of Android Web development.
In this paper, the method of acquiring network link state by Android is illustrated by the example form. The specific contents are as follows:
As far as the current Android phone is concerned, there may be 5 network states:
----No
, and network interface information.Options:A: Displays the status of all sockets.N: Print the actual address, add this parameter speed is relatively good, memory consumption is small.R: Prints the routing table.The listen represents a connection request that listens for TCP ports from afar. In this figure, receive any port from any IP to connect to the 22 port on this machine.Established represents an open
Android Rxjava+retrofit Network exception capture, state code unified processing
Preface
Recently using Rxjava+retrofit for development, in the project encountered such a requirement, when the networking request to obtain data anomalies, the corresponding message and statuscode need to be obtained and displayed, such as:1. Server connection error: The corresponding return 404,500 and so on;2. No network
of the process (directory)--"for the benefit of other virus intrusion view illegal process." Stat Description:D a process that cannot be interruptedThe process of R run stateS Process in sleep stateT pause, Stop the processZ Zombie Process+ Foreground ProcessN Low-priority processesMemory paging is locked in memoryS master ProcessL Multithreading ProcessView network StatusNetstat (view TCP/IP communication status
To Ping all IP addresses in a CIDR Block and check whether the network connection status is normal, you can use many methods. The following describes two methods:Script 1#! /Bin/sh# Ping all IP addresses of a CIDR Block#2012/02/05Ip = 1 # modifying the Initial ValueWhile [$ ip! = "254]; do# Yes: The no host does not exist or is abnormal.Ping 192.168.0. $ ip-c 2 | grep-q "ttl =" echo "192.168.0. $ ip yes" |
. The disadvantage is that the name of the process is not displayed.Linux under Grab BagGrab Bag Tool tcpdumpSee which packages are coming in. And the flow of data, length. The default is TCP packets, if you find a lot of UDP packets are likely to attack. Eg DDos UDP flood. Access to professional anti-attack devices or services only.TCPDUMP-NN NIC Name-nn the first n means that the IP is displayed as a number without displaying the hostname.Time source IP and port > Destination IP and port: Pack
In the telecommunication network management system, the real-time display of the equipment status information is very important, usually mount a bunch of icons to display the status or alarm information, the limited information of the icons, sometimes need more detailed panels, even in the form of a chart, this article will combine the needs of recent customers,
Tags: monitoring io performance FREE Command PS command View network status Linux under Grab BagMonitoring IO PerformanceIntroductionThe Iostat is primarily used to monitor the IO load on the system device, iostat the statistics from the start of the system startup when the first run, and then running Iostat displays statistics from the last time the command was run. Users can obtain the required statistics
CLOSED: No connection is active or in progressEstablised: The state of the connection has been established;Syn_sent: Send the active line (SYN sign) of the connection packet;SYN_RECV: Received a request to connect the active connection packet;FIN_WAIT1: The socket Service (socket) has been interrupted and the connection is disconnected;Fin_wait2: The connection has been hung up, but is waiting for the other host to respond to the packet disconnection confirmation;Time_wait: The connection has be
First, through the timing of email to detect network connectivity
Copy Code code as follows:
#/bin/bash
echo "Daily Test mail" > State.txt
Mail-s Server_state Abc@jb51.net Rm-df./state.txt
~
Crontab-e
Add the following tasks
* * */root/checknkmail
Time-Sharing and Lunar Week
Second, timed detection network status by e-mail
Checkserve
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