PHP cURL IPv6 connect_time 在第一次请求时非常慢

【问题标题】：PHP cURL IPv6 connect_time very slow on first requestPHP cURL IPv6 connect_time 在第一次请求时非常慢
【发布时间】：2015-04-06 07:16:21
【问题描述】：

我正在尝试制作一个 PHP 脚本，该脚本生成一个随机 IPv6 地址并将其分配给 eth0 并执行一个 HTTP 请求，但似乎所有地址都需要通过首先发出一个虚拟请求来“初始化”。但是，我需要 IP 在创建后的一秒钟内为 HTTP 请求做好准备。经过数小时的测试和互联网搜索，我无法找出问题所在，所以我来到了这里。

我的 Debian VPS 分配了一个 /64 IPv6 地址空间。

为了解释我这样做的问题：

首先我手动分配了 9 个 IP

ip addr change 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:1 dev eth0 valid_lft 600 preferred_lft 600                       
ip addr change 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:2 dev eth0 valid_lft 600 preferred_lft 600                       
ip addr change 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:3 dev eth0 valid_lft 600 preferred_lft 600                       
ip addr change 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:4 dev eth0 valid_lft 600 preferred_lft 600                       
ip addr change 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:5 dev eth0 valid_lft 600 preferred_lft 600                       
ip addr change 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:6 dev eth0 valid_lft 600 preferred_lft 600                       
ip addr change 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:7 dev eth0 valid_lft 600 preferred_lft 600                       
ip addr change 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:8 dev eth0 valid_lft 600 preferred_lft 600                       
ip addr change 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:9 dev eth0 valid_lft 600 preferred_lft 600

PHP 脚本：

<?php
$URL = "ipv6.whatismyv6.com";

for($i=1; $i<10; $i++)
{
    $ch = curl_init();

    $IP = "2001:19f0:xxxx:xxxx:xxxx:xxxx:2:{$i}";

    curl_setopt($ch, CURLOPT_URL, $URL);

    curl_setopt($ch, CURLOPT_HEADER, true);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
    curl_setopt($ch, CURLINFO_HEADER_OUT, TRUE);

    // Set IPv6
    curl_setopt($ch, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V6);
    curl_setopt($ch, CURLOPT_INTERFACE, $IP);
    curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 60);
    curl_setopt($ch, CURLOPT_TIMEOUT, 120);

    print "IP {$IP}\n";

    curl_exec($ch);

    if(curl_errno($ch))
        die(curl_error($ch));

    var_dump(curl_getinfo($ch));
    print "\nDone for IP {$IP}\n\n";

    curl_close($ch);
}

在第一次运行脚本时，我得到了这个输出。如您所见，除了第一个请求外，每个连接时间都是 32 秒。看起来 cURL 在尝试连接之前需要花费 30 秒的时间。

IP 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:1
array(27) {
  ["url"]=>
  string(26) "HTTP://ipv6.whatismyv6.com"
  ["content_type"]=>
  string(9) "text/html"
  ["http_code"]=>
  int(200)
  ["header_size"]=>
  int(174)
  ["request_size"]=>
  int(58)
  ["filetime"]=>
  int(-1)
  ["ssl_verify_result"]=>
  int(0)
  ["redirect_count"]=>
  int(0)
  ["total_time"]=>
  float(2.041753)
  ["namelookup_time"]=>
  float(0.969251)
  ["connect_time"]=>
  float(2.002953)
  ["pretransfer_time"]=>
  float(2.002985)
  ["size_upload"]=>
  float(0)
  ["size_download"]=>
  float(1446)
  ["speed_download"]=>
  float(708)
  ["speed_upload"]=>
  float(0)
  ["download_content_length"]=>
  float(1446)
  ["upload_content_length"]=>
  float(0)
  ["starttransfer_time"]=>
  float(2.04171)
  ["redirect_time"]=>
  float(0)
  ["certinfo"]=>
  array(0) {
  }
  ["primary_ip"]=>
  string(14) "2001:4810::110"
  ["primary_port"]=>
  int(80)
  ["local_ip"]=>
  string(33) "2001:19f0:xxxx:xxxx:xxxx:xxxx:2:1"
  ["local_port"]=>
  int(46353)
  ["redirect_url"]=>
  string(0) ""
  ["request_header"]=>
  string(58) "GET / HTTP/1.1
Host: ipv6.whatismyv6.com
Accept: */*

"
}

Done for IP 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:1

IP 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:2
array(27) {
  ["url"]=>
  string(26) "HTTP://ipv6.whatismyv6.com"
  ["content_type"]=>
  string(9) "text/html"
  ["http_code"]=>
  int(200)
  ["header_size"]=>
  int(174)
  ["request_size"]=>
  int(58)
  ["filetime"]=>
  int(-1)
  ["ssl_verify_result"]=>
  int(0)
  ["redirect_count"]=>
  int(0)
  ["total_time"]=>
  float(32.02449)
  ["namelookup_time"]=>
  float(3.1E-5)
  ["connect_time"]=>
  float(31.986268)
  ["pretransfer_time"]=>
  float(31.986298)
  ["size_upload"]=>
  float(0)
  ["size_download"]=>
  float(1446)
  ["speed_download"]=>
  float(45)
  ["speed_upload"]=>
  float(0)
  ["download_content_length"]=>
  float(1446)
  ["upload_content_length"]=>
  float(0)
  ["starttransfer_time"]=>
  float(32.024464)
  ["redirect_time"]=>
  float(0)
  ["certinfo"]=>
  array(0) {
  }
  ["primary_ip"]=>
  string(14) "2001:4810::110"
  ["primary_port"]=>
  int(80)
  ["local_ip"]=>
  string(33) "2001:19f0:xxxx:xxxx:xxxx:xxxx:2:2"
  ["local_port"]=>
  int(53907)
  ["redirect_url"]=>
  string(0) ""
  ["request_header"]=>
  string(58) "GET / HTTP/1.1
Host: ipv6.whatismyv6.com
Accept: */*

"
}

Done for IP 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:2

IP 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:3
array(27) {
  ["url"]=>
  string(26) "HTTP://ipv6.whatismyv6.com"
  ["content_type"]=>
  string(9) "text/html"
  ["http_code"]=>
  int(200)
  ["header_size"]=>
  int(174)
  ["request_size"]=>
  int(58)
  ["filetime"]=>
  int(-1)
  ["ssl_verify_result"]=>
  int(0)
  ["redirect_count"]=>
  int(0)
  ["total_time"]=>
  float(32.080273)
  ["namelookup_time"]=>
  float(1.9E-5)
  ["connect_time"]=>
  float(32.041328)
  ["pretransfer_time"]=>
  float(32.041358)
  ["size_upload"]=>
  float(0)
  ["size_download"]=>
  float(1446)
  ["speed_download"]=>
  float(45)
  ["speed_upload"]=>
  float(0)
  ["download_content_length"]=>
  float(1446)
  ["upload_content_length"]=>
  float(0)
  ["starttransfer_time"]=>
  float(32.080247)
  ["redirect_time"]=>
  float(0)
  ["certinfo"]=>
  array(0) {
  }
  ["primary_ip"]=>
  string(14) "2001:4810::110"
  ["primary_port"]=>
  int(80)
  ["local_ip"]=>
  string(33) "2001:19f0:xxxx:xxxx:xxxx:xxxx:2:3"
  ["local_port"]=>
  int(56910)
  ["redirect_url"]=>
  string(0) ""
  ["request_header"]=>
  string(58) "GET / HTTP/1.1
Host: ipv6.whatismyv6.com
Accept: */*

"
}

Done for IP 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:3

IP 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:4
array(27) {
  ["url"]=>
  string(26) "HTTP://ipv6.whatismyv6.com"
  ["content_type"]=>
  string(9) "text/html"
  ["http_code"]=>
  int(200)
  ["header_size"]=>
  int(174)
  ["request_size"]=>
  int(58)
  ["filetime"]=>
  int(-1)
  ["ssl_verify_result"]=>
  int(0)
  ["redirect_count"]=>
  int(0)
  ["total_time"]=>
  float(32.124284)
  ["namelookup_time"]=>
  float(1.9E-5)
  ["connect_time"]=>
  float(32.085118)
  ["pretransfer_time"]=>
  float(32.085152)
  ["size_upload"]=>
  float(0)
  ["size_download"]=>
  float(1446)
  ["speed_download"]=>
  float(45)
  ["speed_upload"]=>
  float(0)
  ["download_content_length"]=>
  float(1446)
  ["upload_content_length"]=>
  float(0)
  ["starttransfer_time"]=>
  float(32.124239)
  ["redirect_time"]=>
  float(0)
  ["certinfo"]=>
  array(0) {
  }
  ["primary_ip"]=>
  string(14) "2001:4810::110"
  ["primary_port"]=>
  int(80)
  ["local_ip"]=>
  string(33) "2001:19f0:xxxx:xxxx:xxxx:xxxx:2:4"
  ["local_port"]=>
  int(59346)
  ["redirect_url"]=>
  string(0) ""
  ["request_header"]=>
  string(58) "GET / HTTP/1.1
Host: ipv6.whatismyv6.com
Accept: */*

"
}

Done for IP 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:4

IP 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:5
array(27) {
  ["url"]=>
  string(26) "HTTP://ipv6.whatismyv6.com"
  ["content_type"]=>
  string(9) "text/html"
  ["http_code"]=>
  int(200)
  ["header_size"]=>
  int(174)
  ["request_size"]=>
  int(58)
  ["filetime"]=>
  int(-1)
  ["ssl_verify_result"]=>
  int(0)
  ["redirect_count"]=>
  int(0)
  ["total_time"]=>
  float(32.074903)
  ["namelookup_time"]=>
  float(1.6E-5)
  ["connect_time"]=>
  float(32.036185)
  ["pretransfer_time"]=>
  float(32.036232)
  ["size_upload"]=>
  float(0)
  ["size_download"]=>
  float(1446)
  ["speed_download"]=>
  float(45)
  ["speed_upload"]=>
  float(0)
  ["download_content_length"]=>
  float(1446)
  ["upload_content_length"]=>
  float(0)
  ["starttransfer_time"]=>
  float(32.074879)
  ["redirect_time"]=>
  float(0)
  ["certinfo"]=>
  array(0) {
  }
  ["primary_ip"]=>
  string(14) "2001:4810::110"
  ["primary_port"]=>
  int(80)
  ["local_ip"]=>
  string(33) "2001:19f0:xxxx:xxxx:xxxx:xxxx:2:5"
  ["local_port"]=>
  int(50604)
  ["redirect_url"]=>
  string(0) ""
  ["request_header"]=>
  string(58) "GET / HTTP/1.1
Host: ipv6.whatismyv6.com
Accept: */*

"
}

Done for IP 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:5

IP 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:6
array(27) {
  ["url"]=>
  string(26) "HTTP://ipv6.whatismyv6.com"
  ["content_type"]=>
  string(9) "text/html"
  ["http_code"]=>
  int(200)
  ["header_size"]=>
  int(174)
  ["request_size"]=>
  int(58)
  ["filetime"]=>
  int(-1)
  ["ssl_verify_result"]=>
  int(0)
  ["redirect_count"]=>
  int(0)
  ["total_time"]=>
  float(32.425055)
  ["namelookup_time"]=>
  float(0.35623)
  ["connect_time"]=>
  float(32.386056)
  ["pretransfer_time"]=>
  float(32.386088)
  ["size_upload"]=>
  float(0)
  ["size_download"]=>
  float(1446)
  ["speed_download"]=>
  float(44)
  ["speed_upload"]=>
  float(0)
  ["download_content_length"]=>
  float(1446)
  ["upload_content_length"]=>
  float(0)
  ["starttransfer_time"]=>
  float(32.425031)
  ["redirect_time"]=>
  float(0)
  ["certinfo"]=>
  array(0) {
  }
  ["primary_ip"]=>
  string(14) "2001:4810::110"
  ["primary_port"]=>
  int(80)
  ["local_ip"]=>
  string(33) "2001:19f0:xxxx:xxxx:xxxx:xxxx:2:6"
  ["local_port"]=>
  int(35632)
  ["redirect_url"]=>
  string(0) ""
  ["request_header"]=>
  string(58) "GET / HTTP/1.1
Host: ipv6.whatismyv6.com
Accept: */*

"
}

Done for IP 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:6

IP 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:7
array(27) {
  ["url"]=>
  string(26) "HTTP://ipv6.whatismyv6.com"
  ["content_type"]=>
  string(9) "text/html"
  ["http_code"]=>
  int(200)
  ["header_size"]=>
  int(174)
  ["request_size"]=>
  int(58)
  ["filetime"]=>
  int(-1)
  ["ssl_verify_result"]=>
  int(0)
  ["redirect_count"]=>
  int(0)
  ["total_time"]=>
  float(35.150028)
  ["namelookup_time"]=>
  float(2.0E-5)
  ["connect_time"]=>
  float(35.111304)
  ["pretransfer_time"]=>
  float(35.111331)
  ["size_upload"]=>
  float(0)
  ["size_download"]=>
  float(1446)
  ["speed_download"]=>
  float(41)
  ["speed_upload"]=>
  float(0)
  ["download_content_length"]=>
  float(1446)
  ["upload_content_length"]=>
  float(0)
  ["starttransfer_time"]=>
  float(35.149998)
  ["redirect_time"]=>
  float(0)
  ["certinfo"]=>
  array(0) {
  }
  ["primary_ip"]=>
  string(14) "2001:4810::110"
  ["primary_port"]=>
  int(80)
  ["local_ip"]=>
  string(33) "2001:19f0:xxxx:xxxx:xxxx:xxxx:2:7"
  ["local_port"]=>
  int(54827)
  ["redirect_url"]=>
  string(0) ""
  ["request_header"]=>
  string(58) "GET / HTTP/1.1
Host: ipv6.whatismyv6.com
Accept: */*

"
}

Done for IP 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:7

IP 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:8
array(27) {
  ["url"]=>
  string(26) "HTTP://ipv6.whatismyv6.com"
  ["content_type"]=>
  string(9) "text/html"
  ["http_code"]=>
  int(200)
  ["header_size"]=>
  int(174)
  ["request_size"]=>
  int(58)
  ["filetime"]=>
  int(-1)
  ["ssl_verify_result"]=>
  int(0)
  ["redirect_count"]=>
  int(0)
  ["total_time"]=>
  float(32.09912)
  ["namelookup_time"]=>
  float(2.0E-5)
  ["connect_time"]=>
  float(32.06125)
  ["pretransfer_time"]=>
  float(32.061287)
  ["size_upload"]=>
  float(0)
  ["size_download"]=>
  float(1446)
  ["speed_download"]=>
  float(45)
  ["speed_upload"]=>
  float(0)
  ["download_content_length"]=>
  float(1446)
  ["upload_content_length"]=>
  float(0)
  ["starttransfer_time"]=>
  float(32.099082)
  ["redirect_time"]=>
  float(0)
  ["certinfo"]=>
  array(0) {
  }
  ["primary_ip"]=>
  string(14) "2001:4810::110"
  ["primary_port"]=>
  int(80)
  ["local_ip"]=>
  string(33) "2001:19f0:xxxx:xxxx:xxxx:xxxx:2:8"
  ["local_port"]=>
  int(45077)
  ["redirect_url"]=>
  string(0) ""
  ["request_header"]=>
  string(58) "GET / HTTP/1.1
Host: ipv6.whatismyv6.com
Accept: */*

"
}

Done for IP 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:8

IP 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:9
array(27) {
  ["url"]=>
  string(26) "HTTP://ipv6.whatismyv6.com"
  ["content_type"]=>
  string(9) "text/html"
  ["http_code"]=>
  int(200)
  ["header_size"]=>
  int(174)
  ["request_size"]=>
  int(58)
  ["filetime"]=>
  int(-1)
  ["ssl_verify_result"]=>
  int(0)
  ["redirect_count"]=>
  int(0)
  ["total_time"]=>
  float(32.050919)
  ["namelookup_time"]=>
  float(2.4E-5)
  ["connect_time"]=>
  float(32.011934)
  ["pretransfer_time"]=>
  float(32.01196)
  ["size_upload"]=>
  float(0)
  ["size_download"]=>
  float(1446)
  ["speed_download"]=>
  float(45)
  ["speed_upload"]=>
  float(0)
  ["download_content_length"]=>
  float(1446)
  ["upload_content_length"]=>
  float(0)
  ["starttransfer_time"]=>
  float(32.050894)
  ["redirect_time"]=>
  float(0)
  ["certinfo"]=>
  array(0) {
  }
  ["primary_ip"]=>
  string(14) "2001:4810::110"
  ["primary_port"]=>
  int(80)
  ["local_ip"]=>
  string(33) "2001:19f0:xxxx:xxxx:xxxx:xxxx:2:9"
  ["local_port"]=>
  int(48069)
  ["redirect_url"]=>
  string(0) ""
  ["request_header"]=>
  string(58) "GET / HTTP/1.1
Host: ipv6.whatismyv6.com
Accept: */*

"
}

Done for IP 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:9

我在第一次运行完成后立即运行脚本，这就是这次的输出。现在 connect_time 一切都很好，我希望它在第一次请求时也是这样。

IP 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:1
array(27) {
  ["url"]=>
  string(26) "HTTP://ipv6.whatismyv6.com"
  ["content_type"]=>
  string(9) "text/html"
  ["http_code"]=>
  int(200)
  ["header_size"]=>
  int(174)
  ["request_size"]=>
  int(58)
  ["filetime"]=>
  int(-1)
  ["ssl_verify_result"]=>
  int(0)
  ["redirect_count"]=>
  int(0)
  ["total_time"]=>
  float(1.00357)
  ["namelookup_time"]=>
  float(0.93072)
  ["connect_time"]=>
  float(0.966039)
  ["pretransfer_time"]=>
  float(0.966092)
  ["size_upload"]=>
  float(0)
  ["size_download"]=>
  float(1446)
  ["speed_download"]=>
  float(1440)
  ["speed_upload"]=>
  float(0)
  ["download_content_length"]=>
  float(1446)
  ["upload_content_length"]=>
  float(0)
  ["starttransfer_time"]=>
  float(1.003512)
  ["redirect_time"]=>
  float(0)
  ["certinfo"]=>
  array(0) {
  }
  ["primary_ip"]=>
  string(14) "2001:4810::110"
  ["primary_port"]=>
  int(80)
  ["local_ip"]=>
  string(33) "2001:19f0:xxxx:xxxx:xxxx:xxxx:2:1"
  ["local_port"]=>
  int(42623)
  ["redirect_url"]=>
  string(0) ""
  ["request_header"]=>
  string(58) "GET / HTTP/1.1
Host: ipv6.whatismyv6.com
Accept: */*

"
}

Done for IP 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:1

IP 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:2
array(27) {
  ["url"]=>
  string(26) "HTTP://ipv6.whatismyv6.com"
  ["content_type"]=>
  string(9) "text/html"
  ["http_code"]=>
  int(200)
  ["header_size"]=>
  int(174)
  ["request_size"]=>
  int(58)
  ["filetime"]=>
  int(-1)
  ["ssl_verify_result"]=>
  int(0)
  ["redirect_count"]=>
  int(0)
  ["total_time"]=>
  float(0.074783)
  ["namelookup_time"]=>
  float(1.6E-5)
  ["connect_time"]=>
  float(0.035955)
  ["pretransfer_time"]=>
  float(0.035979)
  ["size_upload"]=>
  float(0)
  ["size_download"]=>
  float(1446)
  ["speed_download"]=>
  float(19335)
  ["speed_upload"]=>
  float(0)
  ["download_content_length"]=>
  float(1446)
  ["upload_content_length"]=>
  float(0)
  ["starttransfer_time"]=>
  float(0.07476)
  ["redirect_time"]=>
  float(0)
  ["certinfo"]=>
  array(0) {
  }
  ["primary_ip"]=>
  string(14) "2001:4810::110"
  ["primary_port"]=>
  int(80)
  ["local_ip"]=>
  string(33) "2001:19f0:xxxx:xxxx:xxxx:xxxx:2:2"
  ["local_port"]=>
  int(60928)
  ["redirect_url"]=>
  string(0) ""
  ["request_header"]=>
  string(58) "GET / HTTP/1.1
Host: ipv6.whatismyv6.com
Accept: */*

"
}

Done for IP 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:2

IP 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:3
array(27) {
  ["url"]=>
  string(26) "HTTP://ipv6.whatismyv6.com"
  ["content_type"]=>
  string(9) "text/html"
  ["http_code"]=>
  int(200)
  ["header_size"]=>
  int(174)
  ["request_size"]=>
  int(58)
  ["filetime"]=>
  int(-1)
  ["ssl_verify_result"]=>
  int(0)
  ["redirect_count"]=>
  int(0)
  ["total_time"]=>
  float(0.076524)
  ["namelookup_time"]=>
  float(2.2E-5)
  ["connect_time"]=>
  float(0.03672)
  ["pretransfer_time"]=>
  float(0.036757)
  ["size_upload"]=>
  float(0)
  ["size_download"]=>
  float(1446)
  ["speed_download"]=>
  float(18896)
  ["speed_upload"]=>
  float(0)
  ["download_content_length"]=>
  float(1446)
  ["upload_content_length"]=>
  float(0)
  ["starttransfer_time"]=>
  float(0.076497)
  ["redirect_time"]=>
  float(0)
  ["certinfo"]=>
  array(0) {
  }
  ["primary_ip"]=>
  string(14) "2001:4810::110"
  ["primary_port"]=>
  int(80)
  ["local_ip"]=>
  string(33) "2001:19f0:xxxx:xxxx:xxxx:xxxx:2:3"
  ["local_port"]=>
  int(37292)
  ["redirect_url"]=>
  string(0) ""
  ["request_header"]=>
  string(58) "GET / HTTP/1.1
Host: ipv6.whatismyv6.com
Accept: */*

"
}

Done for IP 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:3

IP 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:4
array(27) {
  ["url"]=>
  string(26) "HTTP://ipv6.whatismyv6.com"
  ["content_type"]=>
  string(9) "text/html"
  ["http_code"]=>
  int(200)
  ["header_size"]=>
  int(174)
  ["request_size"]=>
  int(58)
  ["filetime"]=>
  int(-1)
  ["ssl_verify_result"]=>
  int(0)
  ["redirect_count"]=>
  int(0)
  ["total_time"]=>
  float(0.074629)
  ["namelookup_time"]=>
  float(2.1E-5)
  ["connect_time"]=>
  float(0.035955)
  ["pretransfer_time"]=>
  float(0.036001)
  ["size_upload"]=>
  float(0)
  ["size_download"]=>
  float(1446)
  ["speed_download"]=>
  float(19375)
  ["speed_upload"]=>
  float(0)
  ["download_content_length"]=>
  float(1446)
  ["upload_content_length"]=>
  float(0)
  ["starttransfer_time"]=>
  float(0.074593)
  ["redirect_time"]=>
  float(0)
  ["certinfo"]=>
  array(0) {
  }
  ["primary_ip"]=>
  string(14) "2001:4810::110"
  ["primary_port"]=>
  int(80)
  ["local_ip"]=>
  string(33) "2001:19f0:xxxx:xxxx:xxxx:xxxx:2:4"
  ["local_port"]=>
  int(53553)
  ["redirect_url"]=>
  string(0) ""
  ["request_header"]=>
  string(58) "GET / HTTP/1.1
Host: ipv6.whatismyv6.com
Accept: */*

"
}

Done for IP 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:4

IP 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:5
array(27) {
  ["url"]=>
  string(26) "HTTP://ipv6.whatismyv6.com"
  ["content_type"]=>
  string(9) "text/html"
  ["http_code"]=>
  int(200)
  ["header_size"]=>
  int(174)
  ["request_size"]=>
  int(58)
  ["filetime"]=>
  int(-1)
  ["ssl_verify_result"]=>
  int(0)
  ["redirect_count"]=>
  int(0)
  ["total_time"]=>
  float(0.074592)
  ["namelookup_time"]=>
  float(2.0E-5)
  ["connect_time"]=>
  float(0.036058)
  ["pretransfer_time"]=>
  float(0.036093)
  ["size_upload"]=>
  float(0)
  ["size_download"]=>
  float(1446)
  ["speed_download"]=>
  float(19385)
  ["speed_upload"]=>
  float(0)
  ["download_content_length"]=>
  float(1446)
  ["upload_content_length"]=>
  float(0)
  ["starttransfer_time"]=>
  float(0.074564)
  ["redirect_time"]=>
  float(0)
  ["certinfo"]=>
  array(0) {
  }
  ["primary_ip"]=>
  string(14) "2001:4810::110"
  ["primary_port"]=>
  int(80)
  ["local_ip"]=>
  string(33) "2001:19f0:xxxx:xxxx:xxxx:xxxx:2:5"
  ["local_port"]=>
  int(51041)
  ["redirect_url"]=>
  string(0) ""
  ["request_header"]=>
  string(58) "GET / HTTP/1.1
Host: ipv6.whatismyv6.com
Accept: */*

"
}

Done for IP 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:5

IP 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:6
array(27) {
  ["url"]=>
  string(26) "HTTP://ipv6.whatismyv6.com"
  ["content_type"]=>
  string(9) "text/html"
  ["http_code"]=>
  int(200)
  ["header_size"]=>
  int(174)
  ["request_size"]=>
  int(58)
  ["filetime"]=>
  int(-1)
  ["ssl_verify_result"]=>
  int(0)
  ["redirect_count"]=>
  int(0)
  ["total_time"]=>
  float(0.074324)
  ["namelookup_time"]=>
  float(1.9E-5)
  ["connect_time"]=>
  float(0.035745)
  ["pretransfer_time"]=>
  float(0.035784)
  ["size_upload"]=>
  float(0)
  ["size_download"]=>
  float(1446)
  ["speed_download"]=>
  float(19455)
  ["speed_upload"]=>
  float(0)
  ["download_content_length"]=>
  float(1446)
  ["upload_content_length"]=>
  float(0)
  ["starttransfer_time"]=>
  float(0.074282)
  ["redirect_time"]=>
  float(0)
  ["certinfo"]=>
  array(0) {
  }
  ["primary_ip"]=>
  string(14) "2001:4810::110"
  ["primary_port"]=>
  int(80)
  ["local_ip"]=>
  string(33) "2001:19f0:xxxx:xxxx:xxxx:xxxx:2:6"
  ["local_port"]=>
  int(37542)
  ["redirect_url"]=>
  string(0) ""
  ["request_header"]=>
  string(58) "GET / HTTP/1.1
Host: ipv6.whatismyv6.com
Accept: */*

"
}

Done for IP 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:6

IP 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:7
array(27) {
  ["url"]=>
  string(26) "HTTP://ipv6.whatismyv6.com"
  ["content_type"]=>
  string(9) "text/html"
  ["http_code"]=>
  int(200)
  ["header_size"]=>
  int(174)
  ["request_size"]=>
  int(58)
  ["filetime"]=>
  int(-1)
  ["ssl_verify_result"]=>
  int(0)
  ["redirect_count"]=>
  int(0)
  ["total_time"]=>
  float(0.07241)
  ["namelookup_time"]=>
  float(2.3E-5)
  ["connect_time"]=>
  float(0.035187)
  ["pretransfer_time"]=>
  float(0.035246)
  ["size_upload"]=>
  float(0)
  ["size_download"]=>
  float(1446)
  ["speed_download"]=>
  float(19969)
  ["speed_upload"]=>
  float(0)
  ["download_content_length"]=>
  float(1446)
  ["upload_content_length"]=>
  float(0)
  ["starttransfer_time"]=>
  float(0.072382)
  ["redirect_time"]=>
  float(0)
  ["certinfo"]=>
  array(0) {
  }
  ["primary_ip"]=>
  string(14) "2001:4810::110"
  ["primary_port"]=>
  int(80)
  ["local_ip"]=>
  string(33) "2001:19f0:xxxx:xxxx:xxxx:xxxx:2:7"
  ["local_port"]=>
  int(50575)
  ["redirect_url"]=>
  string(0) ""
  ["request_header"]=>
  string(58) "GET / HTTP/1.1
Host: ipv6.whatismyv6.com
Accept: */*

"
}

Done for IP 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:7

IP 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:8
array(27) {
  ["url"]=>
  string(26) "HTTP://ipv6.whatismyv6.com"
  ["content_type"]=>
  string(9) "text/html"
  ["http_code"]=>
  int(200)
  ["header_size"]=>
  int(174)
  ["request_size"]=>
  int(58)
  ["filetime"]=>
  int(-1)
  ["ssl_verify_result"]=>
  int(0)
  ["redirect_count"]=>
  int(0)
  ["total_time"]=>
  float(0.074898)
  ["namelookup_time"]=>
  float(2.1E-5)
  ["connect_time"]=>
  float(0.036041)
  ["pretransfer_time"]=>
  float(0.036079)
  ["size_upload"]=>
  float(0)
  ["size_download"]=>
  float(1446)
  ["speed_download"]=>
  float(19306)
  ["speed_upload"]=>
  float(0)
  ["download_content_length"]=>
  float(1446)
  ["upload_content_length"]=>
  float(0)
  ["starttransfer_time"]=>
  float(0.074861)
  ["redirect_time"]=>
  float(0)
  ["certinfo"]=>
  array(0) {
  }
  ["primary_ip"]=>
  string(14) "2001:4810::110"
  ["primary_port"]=>
  int(80)
  ["local_ip"]=>
  string(33) "2001:19f0:xxxx:xxxx:xxxx:xxxx:2:8"
  ["local_port"]=>
  int(58766)
  ["redirect_url"]=>
  string(0) ""
  ["request_header"]=>
  string(58) "GET / HTTP/1.1
Host: ipv6.whatismyv6.com
Accept: */*

"
}

Done for IP 2001:19f0:xxxx:xxxx:xxxx:xxxx:2:8

还有，

wget --bind-address=2001:19f0:xxxx:xxxx:xxxx:xxxx:3:1 http://ipv6.whatismyv6.com

就像 PHP 脚本中的第一个请求一样工作。

我已经为此奋斗了好几天，因此非常感谢任何帮助。

【问题讨论】：

  • 即使地址失效后，我可以将它们添加回来，请求仍然可以正常工作。
  • 数据包捕获会提供一些关于正在发生的事情的提示。
  • @kasperd 我什至没有想到这一点。我花时间用 tcpdump 转储流量，在wireshark 中打开它并截屏。我觉得这表明了问题，但我对网络及其术语知之甚少，无法继续自己解决这个问题。 TCP 握手似乎失败了，因为相邻的东西迟到了 30 秒。但这是我的网络配置或 PHP 的问题吗？ i.imgur.com/RUWPL9o.png
  • 前两个数据包已经出现问题。从发送 SYN 开始，在发送邻居请求之前几乎有一秒钟的延迟。邻居请求似乎是由发回 SYN ACK 的需要触发的。但是这个延迟应该只是单次往返，而从 GET 请求和响应中我们可以看到往返实际上不到 40 毫秒。这似乎不是客户端的问题。你能在离服务器更近的地方抓拍吗？
  • 靠近服务器的捕获是什么意思？如果您的意思是目标 HTTP 服务器，它只是我用于测试的启用 IPv6 的随机网站，并且 tcp 转储在所有 IPv6 网站上看起来都差不多。问题可能出在我的服务器提供商方面，所以我应该联系他们吗？

标签： php http curl ipv6


【解决方案1】：

添加 IPv6 地址后，系统通常会进行重复地址检测 (DAD)，以确保没有其他系统使用相同的地址。这可能需要几秒钟。如果你确实需要能够立即使用该地址，你需要在界面上禁用 DAD：

echo 0 > /proc/sys/net/ipv6/conf/eth0/accept_dad

【讨论】：

  • 如果这意味着IP地址暂时处于暂定状态，我已经意识到了。不过，这不是这里的问题。我可以等待几分钟，结果仍然是一样的。我认为这是与 PHP 相关的错误/问题。不过，谢谢你，我也想知道该怎么做。
  • 好吧，那确实是别的东西！
猜你喜欢
  • 1970-01-01
  • 1970-01-01
  • 2018-03-22
  • 2010-10-28
  • 1970-01-01
  • 2013-07-08
  • 2010-12-13
  • 1970-01-01
  • 1970-01-01
相关资源
最近更新 更多
热门标签
Java Python linux javascript Mysql C# Docker 算法 前端 SpringBoot Redis Vue spring 设计模式 .net core .net kubernetes c++ 数据库 数据结构 大数据 js 机器学习 微服务 Android Go 程序员 面试 JVM ASP.net core 云原生 人工智能 后端 PHP git CSS golang k8s Nginx Django mybatis 深度学习 多线程 React 架构 devops 爬虫 云计算 Spring Boot LeetCode