In the development work, we often need to obtain the client's IP. The general method to obtain the IP address of the client is: Request.getremoteaddr (), but the real IP address of the client cannot be obtained by the reverse proxy software such as Apache,squid.Cause: Because the intermediary agent is added between the
AnalysisOpen page http://www.coobobo.com/free-http-proxy/, port number a look on the wrong, the old rule ctrl+shift+c choose: This is tragic, the port numbers are shown in pictures: But it doesn't matter, look at these pictures grow so comely pure natural without impurities, identification is very easy. Then choose the IP
Use Python to crawl available proxy IP addresses and python to crawl proxy ip addresses
Preface
Take the latest free proxy IP website as an example: http://www.xicidaili.com/nn /. Many
Winsock provides two methods for HTTP proxy to submit HTTP requests.1. Direct Request2. Connect to the remote server and submit an HTTP request like a common request.
Let's talk about the first method:Let's talk about the common process of submitting an HTTP request:
After c
What do crawlers mean when they hear the IP proxy? What are the differences between them?Why do anti-bot service always need to use a high-speed proxy?With these issues, the ant financial agent can unveil the anonymity level for you.First anonymous: the server does not know that you have used the proxy
as follows:
Httpproxy.createproxyserver ({Target: ' Http://www.111cn.net '});function Proxymiddleware (req, res, next) {if (/\/api\/.*$/.test (Req.url)) {Proxy.web (req, res);} else {Next ();}}
All the APIs are requested to go proxy, but the wrong return, are 404, server tail webserver Access.log incredibly did not capture, which makes me feel very strange. There is no problem accessing the real Server A
Background: The laboratory can be less Internet IP and workstations using intranet IP address is not linked to the outside world, usually basically do not surf the internet, but sometimes need to temporarily network Yum install software or wget softwareSolution: HTTP Proxy Internet1. Configure the
Through Nginx reverse proxy, will not get the real IP, is to obtain the Nginx IP, to get the real IP to be configured nginx configuration file: nginx.conf
Proxy_set_header X-real-ip $remote _addr;
For example:
###############################################################
Sesame HTTP: Basic Principle of proxy, basic principle of sesame proxy
We often encounter this situation in the Process of crawling. At first, crawlers run normally and data is captured normally. Everything looks so beautiful. However, a cup of tea may lead to errors, for example, 403 Forbidden, when you open a webpage, you may see a prompt like "your
[Original] verify whether the proxy IP is useful, the original proxy ip
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How to verify whether the proxy IP address is valid
Open IE. Enter www.ip138.com to display your Internet IP
Http proxy test, http ProxyTechnorati flag: http Proxy verification and testing Technorati flag: C #
Based on a lot of information on the Internet, the final code is summarized as follows:
Using System; using System. collections; using System. collections. generic; using Sy
Python scans the proxy and obtains the instance of the available proxy ip address, pythonproxy
Today, I wrote a practical tool to scan and obtain available proxies.
First of all, I first Baidu found a Website: http://www.xicidaili.com as an Example
This website has published many available
different serve is different. So you can try another Proxy Server outside China when you cannot access it.
4. increase access speed: Usually the proxy server sets a large hard disk buffer. When external information passes through, it is also saved to the buffer, when other users access the same information again, the information is directly retrieved from the buffer and transmitted to the user to Improve
a firewall or through a proxy server. In general, you do not need to use it for dial-up Internet users. Note that the commonly used proxy server for browsing Web pages is typically a dedicated HTTP proxy, which is different from socks. Therefore, you can browse the Web page does not mean that you must be able to acces
option is used for the port listened by the Squid proxy. To implement the HTTP acceleration proxy, the listener port 80Tcp_outgoing_address 255.255.255.255This syntax specifies the IP address of the remote server. In this example, we use 255.255.255.255 to specify all IP ad
First, do not use the proxy server situation:
REMOTE_ADDR = Your IP
Http_via = no value or no display
Http_x_forwarded_for = no value or no display
Second, the use of transparent proxy server situation: transparent proxies
REMOTE_ADDR = Proxy Server IP
Http_via =
Python crawler practice (iii) -------- sogou article (IP proxy pool and user proxy pool settings ---- scrapy ),
In learning the scrapy crawler framework, it will certainly involve setting the IP proxy pool and User-Agent pool to avoid anti-crawling of websites.
In the past t
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