Monday, February 5, 2024

[SOLVED] Curl: transfer closed with outstanding read data remaining

February 05, 2024 curl, php

Issue

I'm having an issue with a large curl call.

I get

nread <= 0, server closed connection, bailing

transfer closed with outstanding read data remaining

and the content is partial delivered

    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

This is the php configuration I use

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);

Solution

Okay, after some searching and IRC chat's I found solution, but not 100% sure what the cause is. Looks like the keep-alives weren't send enough to keep the connection going on. Will post the solution here, hopefully I can help someone out.

What helped for me is adding

--keepalive-time 2

An explanation of the curl option

--keepalive-time <seconds>

This option sets the time a connection needs to remain idle before sending keepalive probes and the time between individual keepalive probes. It is currently effective on operating systems offering the TCP_KEEPIDLE and TCP_KEEPINTVL socket options (meaning Linux, recent AIX, HP-UX and more). This option has no effect if --no-keepalive is used. (Added in 7.18.0)

If this option is used several times, the last one will be used. If unspecified, the option defaults to 60 seconds.

Looks like the default was too high to keep my connection open.

Here is the full command I used for my call

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

And I'm running this version of curl on osx

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

If someone would like to have this option used in PHP curl, the --keepalive-time option is available since PHP 5.5. You can use it as following:

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

Hope this helps someone struggling with the same issue!

Answered By - user555854

Answer Checked By - Senaida (WPSolving Volunteer)

This Answer collected from stackoverflow and tested by PythonFixing community admins, is licensed under cc by-sa 2.5 , cc by-sa 3.0 and cc by-sa 4.0

Monday, February 5, 2024

[SOLVED] Curl: transfer closed with outstanding read data remaining

Issue

Solution

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