我遇到了一个大的 curl 调用问题。
我明白

nread <= 0，服务器关闭连接，正在退出
传输已关闭，剩余未完成的读取数据

并且内容被部分递送

GET /stats/?stats_breakdown=track__track&campaign=&search_criteria=2&period=0&date_month=11&date_day=03&date_year=2015&start_date_month=11&start_date_day=03&start_date_year=2015&end_date_month=12&end_date_day=31&end_date_year=2014 HTTP/1.1
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.13) Gecko/20080311 Firefox/2.0.0.13
Host: domain.com
Accept: */*
Cookie: sessionid=xxg4gglsm7o3b224wihqz8od19wl31h1; csrftoken=JBpLxNtgAVvDEw2wNqvBnRmzDJIjxL6C
Cache-Control: no-cache
Connection: Keep-Alive
Keep-Alive: 600
Accept-Language: en-us
X-CSRFToken: SeN9bHryRK8FWLTLJIs5c6u9AZ47a8pR
Content-Type: application/x-www-form-urlencoded
Origin: https://domain.com
Referer: https://domain.com

* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* HTTP 1.1 or later with persistent connection, pipelining supported
< HTTP/1.1 200 OK
< Server: nginx/1.8.0
< Date: Wed, 04 Nov 2015 12:54:05 GMT
< Content-Type: text/html; charset=utf-8
< Transfer-Encoding: chunked
< Connection: keep-alive
< Vary: Accept-Encoding
< Vary: Cookie, Accept-Language
< P3P: CP="ALL IND DSP COR ADM CONo CUR CUSo IVAo IVDo PSA PSD TAI TELo OUR SAMo CNT COM INT NAV ONL PHY PRE PUR UNI"
< Content-Language: en
* Replaced cookie csrftoken="JBpLxNtgAVvDEw2wNqvBnRmzDJIjxL6C" for domain domain.com, path /, expire 1478091245
< Set-Cookie: csrftoken=JBpLxNtgAVvDEw2wNqvBnRmzDJIjxL6C; expires=Wed, 02-Nov-2016 12:54:05 GMT; Max-Age=31449600; Path=/; secure
<
* nread <= 0, server closed connection, bailing
* transfer closed with outstanding read data remaining
* Closing connection #0

这是我使用的php配置

function getHeaders()
{
    $headers = array();
    $headers[] = 'Cache-Control: no-cache';
    $headers[] = 'Connection: Keep-Alive';
    $headers[] = 'Keep-Alive: 600';
    $headers[] = 'Accept-Language: en-us';
    $headers[] = 'X-CSRFToken: SeN9bHryRK8FWLTLJIs5c6u9AZ47a8pR';

    $headers[] = 'Content-Type: application/x-www-form-urlencoded';
    $headers[] = 'Origin: https://domain.com';
    $headers[] = 'Referer: https://domain.com';

    return $headers;

}

curl_setopt($connection, CURLOPT_URL, $url);
    curl_setopt($connection, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($connection, CURLOPT_FOLLOWLOCATION, true);
    curl_setopt($connection, CURLOPT_USERAGENT,'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.13) Gecko/20080311 Firefox/2.0.0.13');
    curl_setopt($connection, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($connection, CURLOPT_SSL_VERIFYHOST, false);
    curl_setopt($connection, CURLOPT_COOKIEFILE, 'cookie.txt');
    curl_setopt($connection, CURLOPT_COOKIEJAR, 'cookie.txt');
    curl_setopt($connection, CURLOPT_CONNECTTIMEOUT ,550000000);
    curl_setopt($connection, CURLOPT_TIMEOUT, 5500000000); //timeout in seconds
    curl_setopt($connection, CURLOPT_HTTPHEADER, getHeaders());
    curl_setopt($connection, CURLOPT_VERBOSE, 1);

好吧，经过一些搜索和IRC聊天，我找到了解决方案，但不是100%确定原因是什么。看起来保活信号发送得不够，无法保持连接。我会在这里发布解决方案，希望我能帮助别人。
对我有帮助的是

--keepalive-time 2

curl选项的说明

--keepalive-time <seconds>

此选项设置连接在发送保活探测之前需要保持空闲的时间以及各个保活探测之间的时间。它目前在提供TCP_KEEPIDLE和TCP_KEEPINTVL套接字选项的操作系统（即Linux、最新的AIX、HP-UX等）上有效。如果使用--no-keepalive，则此选项无效。（在7.18.0中添加）
如果多次使用此选项，则将使用最后一个选项。如果未指定，则该选项默认为60秒。
看起来默认值太高，无法保持连接打开。
下面是我调用时使用的完整命令

curl URL -H 'Accept-Encoding: gzip, deflate, sdch' -H 'Accept-Language: en-US,en;q=0.8,et;q=0.6,nl;q=0.4' -H 'Upgrade-Insecure-Requests: 1' -H 'User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.2454.101 Safari/537.36' -H 'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8' -H 'Connection: keep-alive' --compressed -v --keepalive-time 2

我在osx上运行这个版本的curl

curl 7.43.0 (x86_64-apple-darwin15.0) libcurl/7.43.0 SecureTransport zlib/1.2.5
Protocols: dict file ftp ftps gopher http https imap imaps ldap ldaps pop3 pop3s rtsp smb smbs smtp smtps telnet tftp
Features: AsynchDNS IPv6 Largefile GSS-API Kerberos SPNEGO NTLM NTLM_WB SSL libz UnixSockets

如果有人想在PHP curl中使用这个选项，--keepalive-time选项从PHP 5.5开始可用。您可以按以下方式使用它：

curl_setopt($connection, CURLOPT_TCP_KEEPALIVE, 1);
curl_setopt($connection, CURLOPT_TCP_KEEPIDLE, 2);

希望这能帮助那些在同样问题上挣扎的人！

4条答案

按热度按时间

g2ieeal71#

遇到类似的问题，我的服务器在nginx后面。如果Curl直接连接到服务器，它能够接收响应，但如果curl通过nginx连接到服务器，curl会抛出下面的错误
会议

传输已关闭，剩余未完成的读取数据
关闭连接0 curl ：（18）传输关闭，剩余未完成的读取数据
当我使用浏览器连接到相同的nginx URL时，响应显示正常。这是非常奇怪的，当我试图连接到相同的nginx URL使用curl，它抛出上述错误.
在比较浏览器和curl发送的头之后。我发现浏览器能够接收响应，因为curl没有发送下面的头：

'Accept-Encoding: gzip'

使用curl发送上述标题工作正常。因此，上面的头文件所做的是压缩响应到gzip，从而减少响应大小。
经过进一步的挖掘，发现nginx无法发送任何大于80kb的有效负载。在浪费了很多时间之后，发现问题是与nginx缓冲和nginx工作像一个魅力后，在nginx.conf中添加下面的proxy_buffering属性：

location / {
 proxy_buffering off;
 }

接受的答案并没有解决我的问题。写这个答案，这样任何人都不必浪费时间，如果他们面临着同样的问题，我没有。

赞(0）回复(0）举报 2023-05-16

wztqucjr2#

kiz8lqtg3#

在我的例子中，我不得不增加php.ini中的PHP内存限制配置，因为响应大小高于内存限制，所以在内存分配期间传输被截断。

s3fp2yjn4#

libcurl只告诉你连接被服务器以一种不干净的方式切断了，它没有传递它承诺要做的数据。看起来分块编码并没有表示传输结束。
浏览器因其接收的内容极其自由而臭名昭著，因此它们忽略了各种协议违反，并且比libcurl更容易接受。

php Curl：传输已关闭，剩余未完成的读取数据

4条答案

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