這篇文章主要講解了“如何獲取站點(diǎn)的各類響應(yīng)時(shí)間”，文中的講解內(nèi)容簡(jiǎn)單清晰，易于學(xué)習(xí)與理解，下面請(qǐng)大家跟著小編的思路慢慢深入，一起來(lái)研究和學(xué)習(xí)“如何獲取站點(diǎn)的各類響應(yīng)時(shí)間”吧！

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有時(shí)候?yàn)榱藴y(cè)試網(wǎng)絡(luò)情況，需要返回每個(gè)階段的耗時(shí)時(shí)間，比如DNS解析耗時(shí)，建立連接所消耗的時(shí)間，從建立連接到準(zhǔn)備傳輸所使用的時(shí)間，從建立連接到傳輸開(kāi)始所使用的時(shí)間，整個(gè)過(guò)程耗時(shí)，下載的數(shù)據(jù)量，下載速度，上傳數(shù)據(jù)量，上傳速度等等。下面的腳本獲取以上信息：

代碼如下:

###################################
### author: www.ttlsa.com   ###
### QQ群: 39514058     ###
### E-mail: service@ttlsa.com  ###
###################################
use strict;
use Data::Dumper;
use WWW::Curl::Easy;

if(!@ARGV){
 print "Usaging: $0 url\n";
 print "For example: $0 www.ttlsa.com\n";
 exit;
}

my $curl = new WWW::Curl::Easy;
open my $response_body,">/dev/null";
$curl->setopt(CURLOPT_HEADER,1);
$curl->setopt(CURLOPT_URL, $ARGV[0]);
$curl->setopt(CURLOPT_WRITEDATA,\$response_body);
$curl->perform;
my $err = $curl->errbuf;
if(!$err){
 my $st = &getTime;
 my $http_code = $curl->getinfo(CURLINFO_RESPONSE_CODE);
 my $http_dns_time = $curl->getinfo(CURLINFO_NAMELOOKUP_TIME);
 my $http_conn_time = $curl->getinfo(CURLINFO_CONNECT_TIME);
 #my $http_APP_time = $curl->getinfo(CURLINFO_APPCONNECT_TIME);
 my $http_PRE_TRAN_time = $curl->getinfo(CURLINFO_PRETRANSFER_TIME);
 my $http_START_TRAN_time = $curl->getinfo(CURLINFO_STARTTRANSFER_TIME);
 my $http_TOTAL_time = $curl->getinfo(CURLINFO_TOTAL_TIME);
 my $http_SIZE_DOWN = $curl->getinfo(CURLINFO_SIZE_DOWNLOAD);
 my $http_SPEED_DOWN = $curl->getinfo(CURLINFO_SPEED_DOWNLOAD);

 printf "local_time: %s, http_code: %d, dns_time: %.3fms, conn_time: %.3fms, pre_tran_time: %.3fms, start_tran_time: %.3fms, total_time: %.3fms, size_download: %dB, speed_download: %dB/s",($st,$http_code,$http_dns_time,$http_conn_time,$http_PRE_TRAN_time,$http_START_TRAN_time,$http_TOTAL_time,$http_SIZE_DOWN,$http_SPEED_DOWN);
 write;

 format STDOUT_TOP=
 站點(diǎn)各類響應(yīng)時(shí)間明細(xì)-@||
 $%
 =========================
 +---------------------+------+-------------+--------------+--------------------------+------------------------+-------------+-----------+------------+
 | 本地時(shí)間 | 狀態(tài) | DNS解析時(shí)間 | 建立連接時(shí)間 | 從建立連接到準(zhǔn)備傳輸時(shí)間 |從建立連接到開(kāi)始傳輸時(shí)間| 整個(gè)過(guò)程時(shí)間| 下載數(shù)據(jù)量|平均下載速度|
 +---------------------+------+-------------+--------------+--------------------------+------------------------+-------------+-----------+------------+
 .

 format STDOUT=
 |@<<<<<<<<<<<<<<<<<<<<| @<<<<| @<<<<<<<<<<<| @<<<<<<<<<<<<| @<<<<<<<<<<<<<<<<<<<<<<<<| @<<<<<<<<<<<<<<<<<<<<<<| @<<<<<<<<<<<| @<<<<<<<<<| @<<<<<<<<<<|
 $st,$http_code,$http_dns_time."ms",$http_conn_time."ms",$http_PRE_TRAN_time."ms",$http_START_TRAN_time."ms",$http_TOTAL_time."ms",$http_SIZE_DOWN."B",$http_SPEED_DOWN."B/s"
 +---------------------+------+-------------+--------------+--------------------------+------------------------+--------------+----------+------------+
 .
}else{
 print "Error: $err\n";
}

sub getTime()
{
 my @time=(localtime)[5,4,3,2,1,0];
 $time[0]+=1900;
 $time[1]+=1;
 return sprintf("%04u-%02u-%02u %02u:%02u:%02u",@time);
}




shell命令下也有相同的命令如下所示：

代碼如下:

# curl -o /dev/null -s -w %{http_code}:%{http_connect}:%{time_namelookup}:%{time_connect}:%{time_pretransfer}:%{time_starttransfer}:%{time_total}:%{size_download}:%{speed_download} www.ttlsa.com

使用 cURL 獲取站點(diǎn)的各類響應(yīng)時(shí)間 – dns解析時(shí)間,響應(yīng)時(shí)間,傳輸時(shí)間

代碼如下:

curl -o /dev/null -s -w %{http_code}:%{http_connect}:%{content_type}:%{time_namelookup}:%{time_redirect}:%{time_pretransfer}:%{time_connect}:%{time_starttransfer}:%{time_total}:%{speed_download} digdeeply.org

這是一個(gè)本人博客站點(diǎn)執(zhí)行 curl 命令的情況。輸出通常是 HTML 代碼，通過(guò) -o 參數(shù)發(fā)送到 /dev/null。-s 參數(shù)去掉所有狀態(tài)信息。-w 參數(shù)讓 curl 輸出的計(jì)時(shí)器的狀態(tài)信息。



一次http請(qǐng)求中的各個(gè)時(shí)間段-dns解析,等待服務(wù)器響應(yīng),獲取內(nèi)容等

下邊對(duì)-w參數(shù)做個(gè)詳細(xì)的解釋，由我(DigDeeply)翻譯。有不對(duì)的地方請(qǐng)大家指出。(英文原文：http://curl.haxx.se/docs/manpage.html)
以下是可用的變量名：

-w, --write-out
以下變量會(huì)按CURL認(rèn)為合適的格式輸出，輸出變量需要按照%{variable_name}的格式，如果需要輸出%，double一下即可，即%%，同時(shí)，\n是換行，\r是回車，\t是TAB。

url_effective The URL that was fetched last. This is most meaningful if you've told curl to follow location: headers.

filename_effective The ultimate filename that curl writes out to. This is only meaningful if curl is told to write to a file with the --remote-name or --output option. It's most useful in combination with the --remote-header-name option. (Added in 7.25.1)

http_code http狀態(tài)碼，如200成功,301轉(zhuǎn)向,404未找到,500服務(wù)器錯(cuò)誤等。(The numerical response code that was found in the last retrieved HTTP(S) or FTP(s) transfer. In 7.18.2 the alias response_code was added to show the same info.)

http_connect The numerical code that was found in the last response (from a proxy) to a curl CONNECT request. (Added in 7.12.4)

time_total 總時(shí)間，按秒計(jì)。精確到小數(shù)點(diǎn)后三位。 （The total time, in seconds, that the full operation lasted. The time will be displayed with millisecond resolution.）

time_namelookup DNS解析時(shí)間,從請(qǐng)求開(kāi)始到DNS解析完畢所用時(shí)間。(The time, in seconds, it took from the start until the name resolving was completed.)

time_connect 連接時(shí)間,從開(kāi)始到建立TCP連接完成所用時(shí)間,包括前邊DNS解析時(shí)間，如果需要單純的得到連接時(shí)間，用這個(gè)time_connect時(shí)間減去前邊time_namelookup時(shí)間。以下同理，不再贅述。(The time, in seconds, it took from the start until the TCP connect to the remote host (or proxy) was completed.)

time_appconnect 連接建立完成時(shí)間，如SSL/SSH等建立連接或者完成三次握手時(shí)間。(The time, in seconds, it took from the start until the SSL/SSH/etc connect/handshake to the remote host was completed. (Added in 7.19.0))

time_pretransfer 從開(kāi)始到準(zhǔn)備傳輸?shù)臅r(shí)間。(The time, in seconds, it took from the start until the file transfer was just about to begin. This includes all pre-transfer commands and negotiations that are specific to the particular protocol(s) involved.)

time_redirect 重定向時(shí)間，包括到最后一次傳輸前的幾次重定向的DNS解析，連接，預(yù)傳輸，傳輸時(shí)間。(The time, in seconds, it took for all redirection steps include name lookup, connect, pretransfer and transfer before the final transaction was started. time_redirect shows the complete execution time for multiple redirections. (Added in 7.12.3))

time_starttransfer 開(kāi)始傳輸時(shí)間。在發(fā)出請(qǐng)求之后，Web 服務(wù)器返回?cái)?shù)據(jù)的第一個(gè)字節(jié)所用的時(shí)間(The time, in seconds, it took from the start until the first byte was just about to be transferred. This includes time_pretransfer and also the time the server needed to calculate the result.)

size_download 下載大小。(The total amount of bytes that were downloaded.)

size_upload 上傳大小。(The total amount of bytes that were uploaded.)

size_header 下載的header的大小(The total amount of bytes of the downloaded headers.)

size_request 請(qǐng)求的大小。(The total amount of bytes that were sent in the HTTP request.)

speed_download 下載速度，單位-字節(jié)每秒。(The average download speed that curl measured for the complete download. Bytes per second.)

speed_upload 上傳速度,單位-字節(jié)每秒。(The average upload speed that curl measured for the complete upload. Bytes per second.)

content_type 就是content-Type，不用多說(shuō)了，這是一個(gè)訪問(wèn)我博客首頁(yè)返回的結(jié)果示例(text/html; charset=UTF-8)；(The Content-Type of the requested document, if there was any.)

num_connects Number of new connects made in the recent transfer. (Added in 7.12.3)

num_redirects Number of redirects that were followed in the request. (Added in 7.12.3)

redirect_url When a HTTP request was made without -L to follow redirects, this variable will show the actual URL a redirect would take you to. (Added in 7.18.2)

ftp_entry_path The initial path libcurl ended up in when logging on to the remote FTP server. (Added in 7.15.4)

ssl_verify_result ssl認(rèn)證結(jié)果，返回0表示認(rèn)證成功。( The result of the SSL peer certificate verification that was requested. 0 means the verification was successful. (Added in 7.19.0))

若多次使用-w參數(shù)，按最后一個(gè)的格式輸出。If this option is used several times, the last one will be used.

感謝各位的閱讀，以上就是“如何獲取站點(diǎn)的各類響應(yīng)時(shí)間”的內(nèi)容了，經(jīng)過(guò)本文的學(xué)習(xí)后，相信大家對(duì)如何獲取站點(diǎn)的各類響應(yīng)時(shí)間這一問(wèn)題有了更深刻的體會(huì)，具體使用情況還需要大家實(shí)踐驗(yàn)證。這里是創(chuàng)新互聯(lián)網(wǎng)站建設(shè)公司，，小編將為大家推送更多相關(guān)知識(shí)點(diǎn)的文章，歡迎關(guān)注！

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