PHP CURL 内存泄露问题解决方法

php  /  管理员 发布于 5年前   319

phpcurl使用privoxy代理访问https://www.google.com/search?q=xxx

curl配置平淡无奇，长时间运行发现一个严重问题，内存泄露！不论用单线程和多线程都无法避免！是curl访问https站点的时候有bug！
内存泄露可以通过linux的top命令发现，使用php函数memory_get_usage()不会发现。

经过反复调试找到解决办法，curl配置添加如下几项解决问题：

复制代码 代码如下:

[CURLOPT_HTTPPROXYTUNNEL] = true;
[CURLOPT_SSL_VERIFYPEER] = false;
[CURLOPT_SSL_VERIFYHOST] = false;

CURLOPT_HTTPPROXYTUNNEL具体说明stackoverflow上有，直接贴原文：

Without CURLOPT_HTTPPROXYTUNNEL

Without CURLOPT_HTTPPROXYTUNNEL : You just use the proxy address/port as a destination of your HTTP request. The proxy will read the HTTP headers of your query, forward your request to the destination (with your HTTP headers) and then write the response to you.

Example steps :

1）HTTP GET /index.html sent to 1.1.1.1 (proxy)
2）1.1.1.1 receive request and parse header for getting the final destination of your HTTP request.
3）1.1.1.1 forward your query and headers to www.site.com (destination in request headers).
4）1.1.1.1 write back to you the response receive from www.site.com

With CURLOPT_HTTPPROXYTUNNEL

With CURLOPT_HTTPPROXYTUNNEL : You ask the proxy to open a direct binary connection (like HTTPS, called a TCP Tunnel) directly to your destination by doing a CONNECT HTTP request. When the tunnel is ok, the proxy write you back a HTTP/1.1 200 Connection established. When it received your browser start to query the destination directly : The proxy does not parse HTTP headers and theoretically does not read tunnel datas, it just forward it, thats why it is called a tunnel !

Example steps :

1）HTTP CONNECT sent to 1.1.1.1
2）1.1.1.1 receive HTTP CONNECT and get the ip/port of your final destination (header field of HTTP CONNECT).
3）1.1.1.1 open a TCP Socket by doing a TCP handshake to your destination 2.22.63.73:80 (ip/port of www.site.com).
4）1.1.1.1 Make a tunnel by piping your TCP Socket to the TCP Socket opened to 2.22.63.73:80and then write you back HTTP/1.1 200 Connection established witch means that your client can now make your query throw the TCP Tunnel (TCP datas received will be transmited directly to server and vice versa).

http://stackoverflow.com/questions/12288956/what-is-the-curl-option-curlopt-httpproxytunnel-means

您可能感兴趣的文章:

• PHP使用CURL_MULTI实现多线程采集的例子
• 解析php中curl_multi的应用
• php中的curl_multi系列函数使用例子
• PHP使用curl_multi实现并发请求的方法示例
• php curl post 时出现的问题解决
• 关于PHP的curl开启问题探讨
• php使用curl详细解析及问题汇总
• php5.2的curl-bug 服务器被php进程卡死问题排查
• php中curl和soap方式请求服务超时问题的解决
• PHP使用curl_multi_select解决curl_multi网页假死问题的方法