{"id":232881,"date":"2023-01-30T17:35:00","date_gmt":"2023-01-30T14:35:00","guid":{"rendered":"https:\/\/wordpress.mediadoma.com\/?p=232881"},"modified":"2023-01-30T17:35:32","modified_gmt":"2023-01-30T14:35:32","slug":"kuinka-tehdae-ping-testejae-globaaleille-palvelimille-php-n-avulla","status":"publish","type":"post","link":"https:\/\/wordpress.mediadoma.com\/fi\/kuinka-tehdae-ping-testejae-globaaleille-palvelimille-php-n-avulla\/","title":{"rendered":"Kuinka tehd\u00e4 ping-testej\u00e4 globaaleille palvelimille PHP:n avulla?"},"content":{"rendered":"\n

Harkitsen \u00e4skett\u00e4in kolmannen VPS-palvelimeni<\/a> ostamista, ja ping-nopeus on yksi huolenaiheista. Minulla on suhteellisen korkea ping (noin 250 ms) Isosta-Britanniasta Singaporessa sijaitsevaan palvelimeen, mik\u00e4 tekee komentojen kirjoittamisesta SSH-konsolissa hieman ep\u00e4miellytt\u00e4v\u00e4\u00e4.<\/p>\n

Onneksi jotkut VPS-palveluntarjoajat, kuten Vultr<\/a>, tarjoavat IP-osoitteet<\/a> 15 sijainnilleen, joten voit testata ping-nopeutta. Kuinka tehd\u00e4 t\u00e4m\u00e4 automaattisesti kirjoittamatta ping<\/a> – komentoa joka kerta?<\/p>\n

vultr-palvelinsijainnit maailmanlaajuisesti<\/p>\n

Voit l\u00f6yt\u00e4\u00e4 esimerkki PHP-skriptin<\/a> t\u00e4t\u00e4 varten:<\/p>\n

<?php\n\/\/ <a class=\"vglnk\" target=\"_blank\" href=\"https:\/\/helloacm.com\/how-to-make-ping-tests-to-global-servers-using-php\/\" rel=\"nofollow\"><span>https<\/span><span>:\/\/<\/span><span>helloacm<\/span><span>.<\/span><span>com<\/span><span>\/<\/span><span>how<\/span><span>-<\/span><span>to<\/span><span>-<\/span><span>make<\/span><span>-<\/span><span>ping<\/span><span>-<\/span><span>tests<\/span><span>-<\/span><span>to<\/span><span>-<\/span><span>global<\/span><span>-<\/span><span>servers<\/span><span>-<\/span><span>using<\/span><span>-<\/span><span>php<\/span><span>\/<\/span><\/a>\n\u00a0\n\/\/ server name and their IP\n$server = array(\n\u00a0 \"Frankfurt DE\" => \"108.61.210.117\",\n\u00a0 \"Amsterdam, NL\" => \"108.61.198.102\",\n\u00a0 \"Paris, France\" => \"108.61.209.127\",\n\u00a0 \"London, UK\" => \"108.61.196.101\",\n\u00a0 \"Tokyo, Japan\" => \"108.61.201.151\",\n\u00a0 \"Singapore\" => \"45.32.100.168\",\n\u00a0 \"New York (NJ)\" => \"108.61.149.182\",\n\u00a0 \"Chicago, Illinois\" => \"107.191.51.12\",\n\u00a0 \"Seattle, Washington\" => \"108.61.194.105\",\n\u00a0 \"Atlanta, Georgia\" => \"108.61.193.166\",\n\u00a0 \"Silicon Valley, California\" => \"104.156.230.107\",\n\u00a0 \"Dallas, Texas\" => \"108.61.224.175\",\n\u00a0 \"Miami, Florida\" => \"104.156.244.232\",\n\u00a0 \"Los Angeles, California\" => \"108.61.219.200\",\n\u00a0 \"Sydney, Australia\" => \"108.61.212.117\"\n);\n\u00a0\n\/\/ store sorted results\n$result = array(); \n\u00a0\nforeach ($server as $name => $ip) {\n\u00a0 \/\/ exec runs the command and capture the last line of output\n\u00a0 $output = exec(\"ping -c 3 $ip\");\n\u00a0 if (preg_match(\"\/rtt min\/avg\/max\/mdev = ([0-9]+.[0-9]+)\/([0-9]+.[0-9]+)\/([0-9]+.[0-9]+)(.*)\/\", $output, $match)) {\n\u00a0 \u00a0 \/\/ calculate the ping as the average of three ms in last line\n\u00a0 \u00a0 $ping = ((float)$match[1] + (float)$match[2] + (float)$match[3]) \/ 3;\n\u00a0 \u00a0 $result[$name] = $ping; \u00a0 \u00a0\n\u00a0 }\n}\n\u00a0\n\/\/ sorted from the smallest ping to highest\nasort($result);\n\u00a0\nforeach ($result as $name => $ping) {\n\u00a0 echo \"$name - $ping msn\";\n}<\/code><\/pre>\n
T\u00e4m\u00e4n k\u00e4tev\u00e4n PHP-skriptin<\/a> ydin on k\u00e4ytt\u00e4\u00e4 exec<\/strong> – funktiota, joka suorittaa ulkoisen ping-komennon ja palauttaa tulostensa viimeisen rivin.<\/p>\n
root@happyukgo:\/var\/www\/vultr$ ping -c 3 127.0.0.1\nPING 127.0.0.1 (127.0.0.1) 56(84) bytes of data.\n64 bytes from 127.0.0.1: icmp_seq=1 ttl=64 time=0.039 ms\n64 bytes from 127.0.0.1: icmp_seq=2 ttl=64 time=0.041 ms\n64 bytes from 127.0.0.1: icmp_seq=3 ttl=64 time=0.038 ms\n\u00a0\n--- 127.0.0.1 ping statistics ---\n3 packets transmitted, 3 received, 0% packet loss, time 1998ms\nrtt min\/avg\/max\/mdev = 0.038\/0.039\/0.041\/0.005 ms<\/code><\/pre>\n
T\u00e4m\u00e4n j\u00e4lkeen k\u00e4yt\u00e4mme l\u00e4ht\u00f6merkkijonon perusteella regex-testausohjelmaa preg_match<\/strong> ja laskemme n\u00e4iden kolmen pingin keskiarvon. Lopuksi lajittelemme taulukon arvojen mukaan. Alla suoritetaan nopeustestej\u00e4 Isosta-Britanniasta, USA:sta ja Singaporesta maailmanlaajuisiin paikkoihin ja on yll\u00e4tt\u00e4v\u00e4\u00e4, ett\u00e4 ping USA:n (East) ja Iso-Britannian v\u00e4lill\u00e4 on alle 80 ms.<\/p>\n
Ping Speeds Rugbysta, Isosta-Britanniasta<\/h2>\n
    \n
  1. Lontoo, Iso-Britannia \u2013 6,27 ms<\/li>\n
  2. Amsterdam, NL \u2013 13,36 ms<\/li>\n
  3. Pariisi, Ranska \u2013 13,39 ms<\/li>\n
  4. Frankfurt DE \u2013 19,89 ms<\/li>\n
  5. New York (NJ) \u2013 78,7 ms<\/li>\n
  6. Chicago, Illinois \u2013 92,17 ms<\/li>\n
  7. Miami, Florida \u2013 107,27 ms<\/li>\n
  8. Dallas, Texas \u2013 117,40 ms<\/li>\n
  9. Seattle, Washington \u2013 135,78 ms<\/li>\n
  10. Atlanta, Georgia \u2013 139,66 ms<\/li>\n
  11. Piilaakso, Kalifornia \u2013 156,32 ms<\/li>\n
  12. Los Angeles, Kalifornia \u2013 169,51 ms<\/li>\n
  13. Singapore \u2013 191,94 ms<\/li>\n
  14. Tokio, Japani \u2013 229,30 ms<\/li>\n
  15. Sydney, Australia \u2013 291,34 ms<\/li>\n<\/ol>\n
    Ping Speeds New Yorkista, USA:n it\u00e4osasta<\/h2>\n
      \n
    1. New York (NJ) \u2013 0,36 ms<\/li>\n
    2. Atlanta, Georgia \u2013 19,04 ms<\/li>\n
    3. Chicago, Illinois \u2013 20,94 ms<\/li>\n
    4. Miami, Florida \u2013 32,36 ms<\/li>\n
    5. Dallas, Texas \u2013 42,35 ms<\/li>\n
    6. Seattle, Washington \u2013 62,0433 ms<\/li>\n
    7. Lontoo, Iso-Britannia \u2013 67,52 ms<\/li>\n
    8. Los Angeles, Kalifornia \u2013 70,68 ms<\/li>\n
    9. Frankfurt DE \u2013 78,54 ms<\/li>\n
    10. Pariisi, Ranska \u2013 79,47 ms<\/li>\n
    11. Piilaakso, Kalifornia \u2013 79,841 ms<\/li>\n
    12. Amsterdam, NL \u2013 80,65 ms<\/li>\n
    13. Tokio, Japani \u2013 162,70 ms<\/li>\n
    14. Sydney, Australia \u2013 217,58 ms<\/li>\n
    15. Singapore \u2013 231,35 ms<\/li>\n<\/ol>\n
      Ping Speeds Singaporesta<\/h2>\n
        \n
      1. Singapore \u2013 0,53 ms<\/li>\n
      2. Tokio, Japani \u2013 77,10 ms<\/li>\n
      3. Piilaakso, Kalifornia \u2013 170,44 ms<\/li>\n
      4. Los Angeles, Kalifornia \u2013 177,97 ms<\/li>\n
      5. Frankfurt DE \u2013 182,87 ms<\/li>\n
      6. Lontoo, Iso-Britannia \u2013 184,52 ms<\/li>\n
      7. Seattle, Washington \u2013 187,12 ms<\/li>\n
      8. Sydney, Australia \u2013 189,44 ms<\/li>\n
      9. Dallas, Texas \u2013 202,88 ms<\/li>\n
      10. Chicago, Illinois \u2013 218,10 ms<\/li>\n
      11. New York (NJ) \u2013 229,11 ms<\/li>\n
      12. Atlanta, Georgia \u2013 240,88 ms<\/li>\n
      13. Miami, Florida \u2013 245,59 ms<\/li>\n
      14. Pariisi, Ranska \u2013 256,78 ms<\/li>\n
      15. Amsterdam, NL \u2013 326,08 ms<\/li>\n<\/ol>\n
        Ping Speeds Vermontista, USA:n l\u00e4nsiosasta<\/h2>\n
          \n
        1. Piilaakso, Kalifornia \u2013 1,70 ms<\/li>\n
        2. Los Angeles, Kalifornia \u2013 8,37 ms<\/li>\n
        3. Seattle, Washington \u2013 19,55 ms<\/li>\n
        4. Dallas, Texas \u2013 40,36 ms<\/li>\n
        5. Chicago, Illinois \u2013 54,36 ms<\/li>\n
        6. Atlanta, Georgia \u2013 63,63 ms<\/li>\n
        7. New York (NJ) \u2013 74,56 ms<\/li>\n
        8. Miami, Florida \u2013 88,70 ms<\/li>\n
        9. Tokio, Japani \u2013 109,07 ms<\/li>\n
        10. Lontoo, Iso-Britannia \u2013 139,23 ms<\/li>\n
        11. Amsterdam, NL \u2013 144,52 ms<\/li>\n
        12. Sydney, Australia \u2013 157,04 ms<\/li>\n
        13. Pariisi, Ranska \u2013 159,29 ms<\/li>\n
        14. Frankfurt DE \u2013 161,55 ms<\/li>\n
        15. Singapore \u2013 171,10 ms<\/li>\n<\/ol>\n
          Ping Speeds Tokiosta, Japanista<\/h2>\n
            \n
          1. Tokio, Japani \u2013 1,018 ms<\/li>\n
          2. Singapore \u2013 77,32 ms<\/li>\n
          3. Seattle, Washington \u2013 84,54 ms<\/li>\n
          4. Piilaakso, Kalifornia \u2013 108,94 ms<\/li>\n
          5. Los Angeles, Kalifornia \u2013 110,05 ms<\/li>\n
          6. Sydney, Australia \u2013 114,74 ms<\/li>\n
          7. Chicago, Illinois \u2013 146,85 ms<\/li>\n
          8. Dallas, Texas \u2013 155,129 ms<\/li>\n
          9. Atlanta, Georgia \u2013 163,17 ms<\/li>\n
          10. New York (NJ) \u2013 170,06 ms<\/li>\n
          11. Miami, Florida \u2013 174,35 ms<\/li>\n
          12. Lontoo, Iso-Britannia \u2013 229,86 ms<\/li>\n
          13. Frankfurt DE \u2013 253,58 ms<\/li>\n
          14. Amsterdam, NL \u2013 273,022 ms<\/li>\n
          15. Pariisi, Ranska \u2013 287,42 ms<\/li>\n<\/ol>\n
            Voit sitten lis\u00e4t\u00e4 pienen projektin seuraamalla n\u00e4it\u00e4 ping-arvoja p\u00e4ivitt\u00e4in esim. k\u00e4ytt\u00e4m\u00e4ll\u00e4 crontabia<\/a> ja tallentamalla sen tietokantaan<\/a> \u2026<\/p>\n
            Voit olettaa, ett\u00e4 ping-nopeus on samanlainen (kaksisuuntainen), jos vaihdat l\u00e4hteen ja kohteen. Huomaa my\u00f6s, ett\u00e4 turvallisuussyist\u00e4 sammuta PING-palvelut,<\/a> kun olet iloinen kuullessasi yhteyden nopeuden.<\/p>\n
            T\u00e4t\u00e4 sivua p\u00e4ivitet\u00e4\u00e4n ep\u00e4s\u00e4\u00e4nn\u00f6llisin v\u00e4liajoin p\u00e4ivitetyill\u00e4 palvelimilla ja ping-nopeudella.<\/p>\n
            Aiheeseen liittyv\u00e4t julkaisut<\/h3>\n