在 curl 中传递 POST 数据时请求实体太大

Question

我有一个 fastcgi++ 服务。它通过 POST 需要 4 个参数，因为其中一个是密码。我的样本输入是 61 个字符。这就是我调用服务的方式：

curl --data 'name=test&address=abc&phoneNumber=0987654321&password=test123' http://localhost/cgi-bin/add-user.fcg

我收到此错误：413 请求实体太大。根据我的研究，我发现这意味着 apache 期望的主体比它得到的要小。所以，我在httpd.conf中添加了LimitRequestBody 0（我不是在生产环境中）。但是apache还是报错请求实体太大

我在 curl 中添加了 -v，这是输出：

*   Trying ::1...
* TCP_NODELAY set
* Connected to localhost (::1) port 80 (#0)
> POST /cgi-bin/add-user.fcg HTTP/1.1
> Host: localhost
> User-Agent: curl/7.61.1
> Accept: */*
> Content-Length: 60
> Content-Type: application/x-www-form-urlencoded
> 
* upload completely sent off: 60 out of 60 bytes
< HTTP/1.1 413 Request Entity Too Large
< Date: Sun, 24 Mar 2019 03:48:09 GMT
< Server: Apache/2.4.38 (Fedora) mod_fcgid/2.3.9
< Connection: close
< Transfer-Encoding: chunked
< Content-Type: text/html; charset=utf-8
< 
* Closing connection 0
<!DOCTYPE html><html lang='en'><head><title>413 Request Entity Too Large</title></head><body><h1>413 Request Entity Too Large</h1></body></html>

这是我的 httpd.conf:

ServerRoot "/etc/httpd"

Listen 80

Include conf.modules.d/*.conf

User apache
Group apache

ServerAdmin root@localhost

<Directory />
    AllowOverride none
    Require all denied
</Directory>

DocumentRoot "/var/www/html"

<Directory "/var/www">
    AllowOverride None
    # Allow open access:
    Require all granted
</Directory>

<Directory "/var/www/html">
    Options Indexes FollowSymLinks

    AllowOverride None

    Require all granted
</Directory>

<IfModule dir_module>
    DirectoryIndex index.html
</IfModule>

<Files ".ht*">
    Require all denied
</Files>

ErrorLog "logs/error_log"

LogLevel warn

<IfModule log_config_module>
    LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combined
    LogFormat "%h %l %u %t \"%r\" %>s %b" common

    <IfModule logio_module>
      LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\" %I %O" combinedio
    </IfModule>


    CustomLog "logs/access_log" combined
</IfModule>

<IfModule alias_module>
    ScriptAlias /cgi-bin/ "/var/www/cgi-bin/"
</IfModule>

<Directory "/var/www/cgi-bin">
    AllowOverride None
    Options +ExecCGI
    Require all granted
    SetHandler fcgid-script
</Directory>

<IfModule mime_module>
    TypesConfig /etc/mime.types

    AddType application/x-compress .Z
    AddType application/x-gzip .gz .tgz

    AddType text/html .shtml
    AddOutputFilter INCLUDES .shtml
</IfModule>

AddDefaultCharset UTF-8

<IfModule mime_magic_module>
    MIMEMagicFile conf/magic
</IfModule>

EnableSendfile on

IncludeOptional conf.d/*.conf

#I added the line below
LimitRequestBody 0

这是 fcgid.conf:

AddHandler fcgid-script fcg fcgi fpl

Sane place to put sockets and shared memory file
FcgidIPCDir /run/mod_fcgid
FcgidProcessTableFile /run/mod_fcgid/fcgid_shm

Answer 1

（不是答案，但对于评论来说太大了）

如果你运行这个 php 脚本你会得到什么？

<?php
declare(strict_types=1);
header("Content-Type: text/plain;charset=utf-8");
$ch=curl_init('http://localhost/cgi-bin/add-user.fcg');
curl_setopt_array($ch,array(CURLOPT_USERAGENT=>'curl/7.61.1',CURLOPT_RETURNTRANSFER=>1));
$post_str="";
for($i=0;$i<61;++$i){
curl_setopt_array($ch,array(
CURLOPT_POST=>1,
CURLOPT_POSTFIELDS=>$post_str,
));
curl_exec($ch);
$code=curl_getinfo($ch,CURLINFO_RESPONSE_CODE);
echo "bytes: {$i} code: {$code}\n";
$post_str.="a";
}
curl_close($ch);
echo "finished loop";

Answer 2

我应该提到我正在使用 fastcgi++ 库。由于@covener mentioned, the 413 page was not apache's. It turns out that it was fastcgi++. I should have read the docs first. It clearly mentions here默认情况下不启用POST。将构造函数添加到我的 class 并使用我想要的 POST 请求的最大大小调用 Request 构造函数，解决了问题。

P.S。非常感谢@hansherik 为我所做的所有调试时间。

在 curl 中传递 POST 数据时请求实体太大

Request entity too large when passing POST data in curl

apache

curl

http-status-code-413

fastcgi++

fedora-29