id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	uname	nginx_version
1053	socket regression from 1.7.4	paul.m.lush@…		"I've tracked this back to a change made to 1.7.4 which appears in 1.7.5 onwards, including the most recent version

This is tested in PHP as FPM 

- post.php
<?php
@file_put_contents(""/tmp/POSTtest.txt"", json_encode($_POST) . ""\n"", FILE_APPEND);


then using this code if you post to that script you get different results in <= 1.7.4 and => 1.7.5 

<?php

$data = http_build_query(array(""username"" => ""testing""));
$fp = @fsockopen(""127.0.0.1"", 80);
fputs($fp, ""POST /post.php HTTP/1.1\n"" );
fputs($fp, ""Host: www.myhost.com\n"" );
fputs($fp, ""Content-type: application/x-www-form-urlencoded\n"" );
fputs($fp, ""Content-length: "".strlen($data).""\n"" );
fputs($fp, ""Connection: close\r\n\r\n"");
fputs($fp, $data);
//  while(!feof($fp)) {     $h = fgets($fp, 128);  }
fclose($fp);

in 1.7.4 and below, you will get post.php logging the post data to the log file.  In 1.7.5, it won't log any data unless you uncommand the while loop and read back the data.  Nothing in the changelog suggests a change to the way the cgi connection is handled or a change to buffering"	defect	closed	minor		nginx-core	1.11.x	invalid			Linux www 3.18.12-031812-generic #201504221338 SMP Wed Apr 22 17:39:03 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux	"nginx version: nginx/1.7.5
built by gcc 4.8.4 (Ubuntu 4.8.4-2ubuntu1~14.04.3) 
TLS SNI support enabled
configure arguments: --conf-path=/etc/nginx/nginx.conf --prefix=/usr --sbin-path=/usr/sbin --error-log-path=/var/log/nginx/error.log --pid-path=/var/run/nginx.pid --user=www-data --group=www-data --lock-path=/var/lock/nginx.lock --http-log-path=/var/log/nginx/access.log --http-client-body-temp-path=/var/lib/nginx/body --http-proxy-temp-path=/var/lib/nginx/proxy --http-fastcgi-temp-path=/var/lib/nginx/fastcgi --with-debug --with-http_stub_status_module --with-http_ssl_module --with-http_gzip_static_module --without-mail_pop3_module --without-mail_imap_module --without-mail_smtp_module --without-http_autoindex_module --without-http_ssi_module --with-http_realip_module"