ping

问题 How can i check if a method in a web service is working fine or not ? I cannot use ping. I still want to check any kind of method being invoked from the web service by the client. I know it is difficult to generalize but there should be some way. 回答1: I use this method and it works fine : public bool IsAddressAvailable(string address) { try { System.Net.WebClient client = new WebClient(); client.DownloadData(address); return true; } catch { return false; } } 回答2: The only way to know if a web

问题 This question was migrated from Webmasters Stack Exchange because it can be answered on Stack Overflow. Migrated 8 years ago . I have a server that I can use PHP on and a router that can be pinged from the Internet. I want to write a PHP script that sends a ping to the router every 5 minutes with the following results: If the ping succeeds, then nothing would happen. If the ping fails, then it waits a few minutes, and if it still fails it sends a warning to my e-mail address once. After the

问题 I want to get the ping execution time and result in string after ping host. How can I do it? 回答1: long currentTime = System.currentTimeMillis(); boolean isPinged = InetAddress.getByName(servername).isReachable(2000); // 2 seconds currentTime = System.currentTimeMillis() - currentTime; if(isPinged) { System.out.println("pinged successfully in "+ currentTime+ "millisecond"); } else { System.out.println("PIng failed."); } But this will use ICMP ping only in windows system. 回答2: did you check

问题 Test-connection intermittently fails with a lack of resources error: test-connection : Testing connection to computer 'SOMESERVER' failed: Error due to lack of resources At line:1 char:45 + ... ($server in $ServersNonProd.Name) { test-connection $server -Count 1} + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : ResourceUnavailable: (SOMESERVER:String) [Test-Connection], PingException + FullyQualifiedErrorId : TestConnectionException,Microsoft.PowerShell.Commands.TestConnectionCommand As a

问题 Test-connection intermittently fails with a lack of resources error: test-connection : Testing connection to computer 'SOMESERVER' failed: Error due to lack of resources At line:1 char:45 + ... ($server in $ServersNonProd.Name) { test-connection $server -Count 1} + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : ResourceUnavailable: (SOMESERVER:String) [Test-Connection], PingException + FullyQualifiedErrorId : TestConnectionException,Microsoft.PowerShell.Commands.TestConnectionCommand As a

问题 I'm attempting to write a Python script which uses the Scapy module to ping an internal IP range to determine which IP's are online. I've got this so far: #!/usr/bin/python from scapy.all import * conf.verb = 0 for ip in range(0, 256): packet = IP(dst="192.168.0." + str(ip), ttl=20)/ICMP() reply = sr1(packet) if "192.168." in reply.src: print reply.src, "is online" And the program will sit for a while doing nothing, and then if I kill it with CTRL+C I get an error message: Traceback (most

问题 I have an app which pings IP or IP range. The problem is that when hosts are closed it takes longer to ping than they are open. When host is closed the time to ping is about 1-2 seconds. How could I make it faster when hosts are closed? This is my code: using System; using System.Text; using System.Windows.Forms; using System.Net.NetworkInformation; namespace Range_Pinger { public partial class PingIPRange : Form { uint startIP, endIP, currentIP; int count = 0; int open = 0; int closed = 0;

问题 I've got a Docker container running Ubuntu which I did as follows: docker run -it ubuntu /bin/bash however it doesn't seem to have ping . E.g. bash: ping: command not found Do I need to install that? Seems a pretty basic command to be missing. I tried whereis ping which doesn't report anything. 回答1: Docker images are pretty minimal, But you can install ping in your official ubuntu docker image via: apt-get update apt-get install iputils-ping Chances are you dont need ping your image, and just

问题 The task is: Try to send ping in python using the most basic form like "ping 8.8.8.8". After some time terminate the ping command (In a terminal, one will do Ctrl+C) and get its output. The last several lines of output which shows the ping statistics are of particular interest. Two methods tried, did not work. My OS version is Mac OS X 10.10.1. First method uses module pexpect, and ping will stop after about 17 seconds though I did not ask it to stop: import pexpect import time child =