卷曲 - 反应慢答案

【问题标题】：Curl - slow response卷曲 - 反应慢
【发布时间】：2016-02-26 15:28:46
【问题描述】：

我从某人那里得到了地址和端口号。我正在发送一个叫做“tagstream”的东西，然后收到一个回复，一个 zpl 标签。

我应该通过套接字连接发送这个标记流来触发“Uni-Box”。我试过用 curl 来做这件事。它有效，但我需要大约 10 秒才能得到回复。

    $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, '87.213.39.202');
        curl_setopt($ch, CURLOPT_PORT, 3032);

        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

        curl_setopt($ch, CURLOPT_POST, 0);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $message);

    $zpl = curl_exec($ch);

    curl_close($ch);

这是我从 curl_getinfo() 得到的结果：

array:26 [▼
  "url" => "HTTP://87.213.39.202/"
  "content_type" => null
  "http_code" => 0
  "header_size" => 0
  "request_size" => 538
  "filetime" => -1
  "ssl_verify_result" => 0
  "redirect_count" => 0
  "total_time" => 10.327
  "namelookup_time" => 0.0
  "connect_time" => 0.031
  "pretransfer_time" => 0.031
  "size_upload" => 410.0
  "size_download" => 8598.0
  "speed_download" => 832.0
  "speed_upload" => 39.0
  "download_content_length" => -1.0
  "upload_content_length" => 410.0
  "starttransfer_time" => 0.062
  "redirect_time" => 0.0
  "redirect_url" => ""
  "primary_ip" => "87.213.39.202"
  "certinfo" => []
  "primary_port" => 3032
  "local_ip" => "192.168.1.136"
  "local_port" => 49948
]

我还通过这个程序测试了连接： http://sockettest.sourceforge.net/

当我使用它时，我会立即得到回复。

我用 xdebug 做了一个跟踪：

TRACE START [2015-11-24 10:43:47]
    0.0010     130056   -> {main}() C:\Users\phpmachine\test.php:0
    0.0010     130696     -> curl_init() C:\Users\phpmachine\test.php:4
    0.0010     131600     -> curl_setopt() C:\Users\phpmachine\test.php:5
    0.0010     131576     -> curl_setopt() C:\Users\phpmachine\test.php:6
    0.0010     131576     -> curl_setopt() C:\Users\phpmachine\test.php:7
    0.0010     131576     -> curl_setopt() C:\Users\phpmachine\test.php:9
    0.0010     131576     -> curl_setopt() C:\Users\phpmachine\test.php:11
    0.0010     131544     -> curl_setopt() C:\Users\phpmachine\test.php:12
    0.0010     131512     -> curl_exec() C:\Users\phpmachine\test.php:14
   10.3476     153384     -> curl_getinfo() C:\Users\phpmachine\test.php:15
   10.3476     156232     -> var_dump() C:\Users\phpmachine\test.php:17
   10.3516       8416
TRACE END   [2015-11-24 10:43:58]

我从进程监视器得到这个：

12:23:34,0427525    php.exe 6052    TCP Accept  phpmachine-PC:8001 -> phpmachine-PC:52116   SUCCESS Length: 0, mss: 1440, sackopt: 1, tsopt: 0, wsopt: 1, rcvwin: 8192, rcvwinscale: 8, sndwinscale: 8, seqnum: 0, connid: 0
12:23:34,0430792    php.exe 6052    TCP Accept  phpmachine-PC:8001 -> phpmachine-PC:52117   SUCCESS Length: 0, mss: 1440, sackopt: 1, tsopt: 0, wsopt: 1, rcvwin: 8192, rcvwinscale: 8, sndwinscale: 8, seqnum: 0, connid: 0
12:23:34,0481570    php.exe 6052    TCP TCPCopy phpmachine-PC:8001 -> phpmachine-PC:52116   SUCCESS Length: 1052, seqnum: 0, connid: 0
12:23:34,0481705    php.exe 6052    TCP Receive phpmachine-PC:8001 -> phpmachine-PC:52116   SUCCESS Length: 1052, seqnum: 0, connid: 0
12:23:34,0485330    php.exe 6052    CreateFile  C:\Users\phpmachine SUCCESS Desired Access: Read Data/List Directory, Synchronize, Disposition: Open, Options: Directory, Synchronous IO Non-Alert, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a, OpenResult: Opened
12:23:34,0485752    php.exe 6052    QueryDirectory  C:\Users\phpmachine\test.php    SUCCESS Filter: test.php, 1: test.php
12:23:34,0486250    php.exe 6052    CloseFile   C:\Users\phpmachine SUCCESS 
12:23:34,0490208    php.exe 6052    CreateFile  C:\Users\phpmachine SUCCESS Desired Access: Read Attributes, Disposition: Open, Options: Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a, OpenResult: Opened
12:23:34,0490670    php.exe 6052    QueryNetworkOpenInformationFile C:\Users\phpmachine SUCCESS CreationTime: 5-11-2014 20:57:57, LastAccessTime: 24-11-2015 11:04:43, LastWriteTime: 24-11-2015 11:04:43, ChangeTime: 24-11-2015 11:04:43, AllocationSize: 1-1-1601 1:00:00, EndOfFile: 1-1-1601 1:00:00, FileAttributes: D
12:23:34,0490802    php.exe 6052    CloseFile   C:\Users\phpmachine SUCCESS 
12:23:34,0491815    php.exe 6052    CreateFile  C:\Users\phpmachine\test.php    SUCCESS Desired Access: Generic Read, Disposition: Open, Options: Synchronous IO Non-Alert, Non-Directory File, Attributes: N, ShareMode: Read, Write, AllocationSize: n/a, OpenResult: Opened
12:23:34,0492591    php.exe 6052    QueryInformationVolume  C:\Users\phpmachine\test.php    BUFFER OVERFLOW VolumeCreationTime: 31-10-2014 0:44:17, VolumeSerialNumber: 1C6C-4C1A, SupportsObjects: True, VolumeLabel: Win
12:23:34,0492742    php.exe 6052    QueryAllInformationFile C:\Users\phpmachine\test.php    BUFFER OVERFLOW CreationTime: 24-11-2015 10:44:39, LastAccessTime: 24-11-2015 10:44:39, LastWriteTime: 24-11-2015 11:41:30, ChangeTime: 24-11-2015 11:41:30, FileAttributes: A, AllocationSize: 4.096, EndOfFile: 911, NumberOfLinks: 1, DeletePending: False, Directory: False, IndexNumber: 0xb000000023920, EaSize: 0, Access: Generic Read, Position: 0, Mode: Synchronous IO Non-Alert, AlignmentRequirement: Word
12:23:34,0492939    php.exe 6052    CreateFileMapping   C:\Users\phpmachine\test.php    FILE LOCKED WITH ONLY READERS   SyncType: SyncTypeCreateSection, PageProtection: 
12:23:34,0493072    php.exe 6052    QueryStandardInformationFile    C:\Users\phpmachine\test.php    SUCCESS AllocationSize: 4.096, EndOfFile: 911, NumberOfLinks: 1, DeletePending: False, Directory: False
12:23:34,0493284    php.exe 6052    CreateFileMapping   C:\Users\phpmachine\test.php    SUCCESS SyncType: SyncTypeOther
12:23:34,0493580    php.exe 6052    QueryStandardInformationFile    C:\Users\phpmachine\test.php    SUCCESS AllocationSize: 4.096, EndOfFile: 911, NumberOfLinks: 1, DeletePending: False, Directory: False
12:23:34,0494642    php.exe 6052    CloseFile   C:\Users\phpmachine\test.php    SUCCESS 
12:23:34,0764135    php.exe 6052    TCP Connect phpmachine-PC:52118 -> gateway.gls-netherlands.com:3032 SUCCESS Length: 0, mss: 1460, sackopt: 1, tsopt: 0, wsopt: 1, rcvwin: 65700, rcvwinscale: 8, sndwinscale: 0, seqnum: 0, connid: 0
12:23:34,1108071    php.exe 6052    TCP Send    phpmachine-PC:52118 -> gateway.gls-netherlands.com:3032 SUCCESS Length: 626, startime: 112255, endtime: 112256, seqnum: 0, connid: 0
12:23:34,1115333    php.exe 6052    TCP TCPCopy phpmachine-PC:52118 -> gateway.gls-netherlands.com:3032 SUCCESS Length: 128, seqnum: 0, connid: 0
12:23:34,1115718    php.exe 6052    TCP Receive phpmachine-PC:52118 -> gateway.gls-netherlands.com:3032 SUCCESS Length: 128, seqnum: 0, connid: 0
12:23:34,3219629    php.exe 6052    TCP TCPCopy phpmachine-PC:52118 -> gateway.gls-netherlands.com:3032 SUCCESS Length: 1460, seqnum: 0, connid: 0
12:23:34,3220048    php.exe 6052    TCP Receive phpmachine-PC:52118 -> gateway.gls-netherlands.com:3032 SUCCESS Length: 1460, seqnum: 0, connid: 0
12:23:34,3392041    php.exe 6052    TCP TCPCopy phpmachine-PC:52118 -> gateway.gls-netherlands.com:3032 SUCCESS Length: 1460, seqnum: 0, connid: 0
12:23:34,3392469    php.exe 6052    TCP Receive phpmachine-PC:52118 -> gateway.gls-netherlands.com:3032 SUCCESS Length: 1460, seqnum: 0, connid: 0
12:23:34,3400457    php.exe 6052    TCP TCPCopy phpmachine-PC:52118 -> gateway.gls-netherlands.com:3032 SUCCESS Length: 1460, seqnum: 0, connid: 0
12:23:34,3400661    php.exe 6052    TCP Receive phpmachine-PC:52118 -> gateway.gls-netherlands.com:3032 SUCCESS Length: 1460, seqnum: 0, connid: 0
12:23:34,3689893    php.exe 6052    TCP TCPCopy phpmachine-PC:52118 -> gateway.gls-netherlands.com:3032 SUCCESS Length: 1460, seqnum: 0, connid: 0
12:23:34,3690216    php.exe 6052    TCP Receive phpmachine-PC:52118 -> gateway.gls-netherlands.com:3032 SUCCESS Length: 1460, seqnum: 0, connid: 0
12:23:34,3696465    php.exe 6052    TCP TCPCopy phpmachine-PC:52118 -> gateway.gls-netherlands.com:3032 SUCCESS Length: 1256, seqnum: 0, connid: 0
12:23:34,3696662    php.exe 6052    TCP Receive phpmachine-PC:52118 -> gateway.gls-netherlands.com:3032 SUCCESS Length: 1256, seqnum: 0, connid: 0
12:23:34,3766311    php.exe 6052    TCP TCPCopy phpmachine-PC:52118 -> gateway.gls-netherlands.com:3032 SUCCESS Length: 1460, seqnum: 0, connid: 0
12:23:34,3766508    php.exe 6052    TCP Receive phpmachine-PC:52118 -> gateway.gls-netherlands.com:3032 SUCCESS Length: 1460, seqnum: 0, connid: 0
12:23:34,4040472    php.exe 6052    TCP TCPCopy phpmachine-PC:52118 -> gateway.gls-netherlands.com:3032 SUCCESS Length: 150, seqnum: 0, connid: 0
12:23:34,4040780    php.exe 6052    TCP Receive phpmachine-PC:52118 -> gateway.gls-netherlands.com:3032 SUCCESS Length: 150, seqnum: 0, connid: 0
12:23:44,3904869    php.exe 6052    CreateFile  C:\Users    SUCCESS Desired Access: Read Data/List Directory, Synchronize, Disposition: Open, Options: Directory, Synchronous IO Non-Alert, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a, OpenResult: Opened
12:23:44,3905414    php.exe 6052    QueryDirectory  C:\Users\phpmachine SUCCESS Filter: phpmachine, 1: phpmachine
12:23:44,3906037    php.exe 6052    CloseFile   C:\Users    SUCCESS 
12:23:44,3906877    php.exe 6052    CreateFile  C:\ SUCCESS Desired Access: Read Data/List Directory, Synchronize, Disposition: Open, Options: Directory, Synchronous IO Non-Alert, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a, OpenResult: Opened
12:23:44,3907428    php.exe 6052    QueryDirectory  C:\Users    SUCCESS Filter: Users, 1: Users
12:23:44,3908402    php.exe 6052    CloseFile   C:\ SUCCESS 
12:23:44,3910462    php.exe 6052    CreateFile  C:\Users\phpmachine SUCCESS Desired Access: Read Attributes, Disposition: Open, Options: Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a, OpenResult: Opened
12:23:44,3911072    php.exe 6052    QueryNetworkOpenInformationFile C:\Users\phpmachine SUCCESS CreationTime: 5-11-2014 20:57:57, LastAccessTime: 24-11-2015 11:04:43, LastWriteTime: 24-11-2015 11:04:43, ChangeTime: 24-11-2015 11:04:43, AllocationSize: 1-1-1601 1:00:00, EndOfFile: 1-1-1601 1:00:00, FileAttributes: D
12:23:44,3911278    php.exe 6052    CloseFile   C:\Users\phpmachine SUCCESS 
12:23:44,3917083    php.exe 6052    TCP Send    phpmachine-PC:8001 -> phpmachine-PC:52116   SUCCESS Length: 125, startime: 112358, endtime: 112358, seqnum: 0, connid: 0
12:23:44,3918207    php.exe 6052    TCP Send    phpmachine-PC:8001 -> phpmachine-PC:52116   SUCCESS Length: 723, startime: 112358, endtime: 112358, seqnum: 0, connid: 0
12:23:44,3925080    php.exe 6052    TCP Disconnect  phpmachine-PC:8001 -> phpmachine-PC:52117   SUCCESS Length: 0, seqnum: 0, connid: 0
12:23:44,3935677    php.exe 6052    TCP Disconnect  phpmachine-PC:8001 -> phpmachine-PC:52116   SUCCESS Length: 0, seqnum: 0, connid: 0
12:23:44,4195232    php.exe 6052    TCP Disconnect  phpmachine-PC:52118 -> gateway.gls-netherlands.com:3032 SUCCESS Length: 0, seqnum: 0, connid: 0
12:23:48,4995571    php.exe 6052    Thread Exit     SUCCESS Thread ID: 5964, User Time: 0.0000000, Kernel Time: 0.0000000
12:23:48,4996301    php.exe 6052    Thread Exit     SUCCESS Thread ID: 5708, User Time: 0.0000000, Kernel Time: 0.0000000

我找到了一些可行的方法，但不确定它是否是最好的方法。

这次不使用 curl。如果我在没有内容可读取的情况下使用 socket_read，则再次需要 10 秒才能获得结果。但我知道收到的消息应该以哪些字符结尾，所以我用它来确定何时停止。

它有效，而且现在花费的时间更少了！

$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
$result = socket_connect($socket, '87.213.39.202', 3032);
socket_write($socket, $message, strlen($message));

$result = '';
$zpl = '';

for($i = 0; $i < 10; $i++) {
    $read = socket_read($socket, 2048);
    $zpl = $zpl . $read;
    if(substr($read, -13) == '/////GLS/////') {
        break;
    }
}

socket_close($socket);

【问题讨论】：

尝试在你的 URL 中显式设置协议 (http://87.213.39.202) -- http 是默认值，但可能是猜测导致延迟； strace php 进程，这几乎总是导致罪魁祸首。如果延迟不变，则消除 DNS 查询等常见原因。
@TomRegner 我尝试使用curl_setopt($ch, CURLOPT_PROTOCOLS, CURLPROTO_HTTP); 设置协议，但没有帮助。
嗯，这只是一个猜测 :( - 尝试使用 strace 方法来锁定罪魁祸首
我用 xdebug 做了一个跟踪，我不能使用 strace，因为我在 Windows 上。用结果编辑了我的帖子。
跟踪 php 无济于事，因为有趣的部分将发生在 c 级别 - 也许有一个类似 strace 的 win 工具？

标签： php sockets curl

【解决方案1】：

HTTP 与 http 不一样
"http_code" => 0 - 这意味着在请求期间发生了错误，甚至没有完成。

【讨论】：

【解决方案2】：

您是否使用远程响应触发的TCP delayed acknowledgment 或Nagle's algorithm 问题？

【讨论】：