{"Package":"pingr","Title":"Check if a Remote Computer is Up","Version":"2.0.1","Authors@R":"person(given = \"Gbor\", family = \"Csrdi\", role = c(\"aut\", \"cre\"),\nemail = \"csardi.gabor@gmail.com\")","Description":"Check if a remote computer is up. It can either\njust call the system ping command, or check a specified\nTCP port.","License":"MIT + file LICENSE","LazyData":"true","URL":"https://github.com/r-lib/pingr#readme","BugReports":"https://github.com/r-lib/pingr/issues","Suggests":"covr, testthat","Imports":"processx, utils","RoxygenNote":"7.1.0.9000","Encoding":"UTF-8","NeedsCompilation":"yes","Packaged":"2020-06-22 14:44:39 UTC; csard","Author":"Gbor Csrdi [aut, cre]","Maintainer":"Gbor Csrdi ","Repository":"CRAN","Date/Publication":"2020-06-22 17:40:03 UTC","repoType":"cran","tarballUrl":"ftp://cran.r-project.org/pub/R/src/contrib/pingr_2.0.1.tar.gz","jsonAuthors":[{"name":"Gbor Csrdi","email":"csardi.gabor@gmail.com","maintainer":true}],"readme":"\n# pingr: check if a server is alive\n\n[![Linux Build\nStatus](https://travis-ci.org/r-lib/pingr.svg?branch=master)](https://travis-ci.org/r-lib/pingr)\n[![Windows Build\nstatus](https://ci.appveyor.com/api/projects/status/github/r-lib/pingr?svg=true)](https://ci.appveyor.com/project/gaborcsardi/pingr)\n[![CRAN RStudio mirror\ndownloads](http://cranlogs.r-pkg.org/badges/pingr)](https://r-pkg.org/pkg/pingr)\n\nThe pingr package has tools to check if a remote computer or web server\nis up and some other related tools.\n\n## ICMP ping\n\nThe `ping()` function does ICMP ping, via the system’s `ping` utility:\n\n``` r\nlibrary(pingr)\nping(\"127.0.0.1\")\n```\n\n #> [1] 0.046 0.058 0.053\n\nBy default it sends three packets and measures the time it receives and\nanswer. It waits between sending out the packets, so if you want a\nreally quick check, you can just send a single packet:\n\n``` r\nping(\"127.0.0.1\", count = 1)\n```\n\n #> [1] 0.067\n\nIf a machine is down (or it does not exist), then `NA` is returned\ninstead of the roundtrip time:\n\n``` r\nping(\"192.0.2.1\", count = 1)\n```\n\n #> [1] NA\n\n## TCP ping\n\nWith TCP ping we can check if a machine is listeing on a TCP port,\ne.g. if google’s search web server is up and running:\n\n``` r\nping_port(\"www.google.com\", port = 80, count = 1)\n```\n\n #> [1] 12.676\n\n## Query the public IP address of the computer\n\n`my_ip()` queries the public IP of the computer, either via DNS or\nHTTPS:\n\n``` r\nmy_ip()\n```\n\n #> [1] \"81.133.85.232\"\n\n## Check if the computer is online\n\n`is_online()` checks if the computer is online. It makes three tries:\n\n - Queries myip.opendns.com on OpenDNS, see `my_ip()`.\n - Retrieves icanhazip.com via HTTPS, see `my_ip()`.\n - Retrieve Apple’s Captive Portal test page, see\n `apple_captive_test()`.\n\nIf any of these are successful, it returns `TRUE`.\n\n``` r\nis_online()\n```\n\n #> [1] TRUE\n\n## DNS queries\n\nThe package also contains a function to perform DNS queries. This is a\nmore portable and more functional version of the `utils::nsl()`\nfunction:\n\n``` r\nnsl(\"www.r-project.org\", type = 1L)\n```\n\n #> $answer\n #> name class type ttl data\n #> 1 www.r-project.org 1 5 900 cran.wu-wien.ac.at\n #> 2 cran.wu-wien.ac.at 1 1 300 137.208.57.37\n #> \n #> $flags\n #> aa tc rd ra ad cd \n #> FALSE FALSE TRUE TRUE FALSE FALSE\n\n``` r\nnsl(\"google.com\", type = 28L)\n```\n\n #> $answer\n #> name class type ttl data\n #> 1 google.com 1 28 110 2a00:1450:4009:81a::200e\n #> \n #> $flags\n #> aa tc rd ra ad cd \n #> FALSE FALSE TRUE TRUE FALSE FALSE\n\n## License\n\nMIT © RStudio","jobInfo":{"package":"pingr","version":"2.0.1","parsingStatus":"success","parserVersion":1,"parsedAt":"2020-06-22T20:29:48+0000"}}

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