Nginx reverse proxy is a common function of the process of Web layout. After setting the reverse proxy, by reading the HTTP header inside the REMOTE_ADDR can not get the true user IP, we need to increase the nginx configuration to solve this problem.
The following is an experiment to illustrate.
Configure 1 Nginx servers and configure 3 domain names: t2.guokai.
1. The use of proxy IPs:When crawling Web pages, some target sites have anti-crawler mechanisms, for frequent visits to the site and regular access to the site behavior, will collect the shielding IP measures. At this time, you can use proxy IP, shielded one on the other IP.
How to set the IP proxy for Firefox firefox browser
Method/Step
How to set up the IP proxy of Firefox, the method steps as follows, first opens the browser, in the upper right corner hits the "Three" icon, opens the main menu.
In the main menu interface, select the "Options" one.
When you go to the Options
In the company to do distributed Deep web crawler, set up a stable agent pool service, for thousands of reptiles to provide effective agents, to ensure that each crawler is the corresponding site effective proxy IP, so as to ensure that the crawler fast and stable operation, so you want to use some free resources to engage in a simple proxy pool service.
In the
站总页数, I gave a 718 pageIf self.chance >0: #羊毛出在羊身上, if the crawl site starts to counterattack me, I'm going to climb down from him.Agent Camouflage, this self.chance indicates when I started to change agentIf ST% 100==0:Self.dbcurr.execute ("SELECT count (*) from proxy")For R in Self.dbcurr:COUNT=R[0]If St>count:st=1000 #我是从数据库的第1000条开始换的, this section you can change, a random function random change, I wrote very simpleSelf.dbcurr.execute ("SELECT * f
National
Proxy IP Address
Port
Agent Location
is anonymous
type
Validation Time
183.221.171.64
8123
Sichuan
High Stealth
HTTPS
10 minutes ago
211.141.133.100
8118
Jiangxi Ganzhou
High Stealth
HTTP
12 minutes ago
218.205.195.61
808
Beijing
High Stealth
14
15
16
The result of the operation is the same as the previous method.Iv. Use of IP proxies1. Why Use IP ProxyThe User agent has been set up, but should also consider a problem, the program is running fast, if we use a crawler to crawl things on the site, a fixed IP access will be very high, this does not meet the standards of human operation,
Everyone good, I believe that we have used proxy IP over the network, but some IP one or two days expired. To one of the manual to try to open ie, shut down IE, how annoying ah.
It would be nice to have this article. We can use Httpwebrequest,httpwebresponse to proxy verification, thank you for your comment guide!
Oh
Perhaps in the learning of reptiles, encountered a lot of anti-crawling means, IP is one of them.For IP-sealed sites. Need a lot of proxy IP, to buy proxy IP, for beginners feel no need, each sell
Nginx reverse proxy, the servlet application via request.getremoteaddr () IP is nginx IP address, not the client real IP, through the Request.getrequesturl () access to the domain name, protocol, Ports are domain names, protocols, and ports that are Nginx access to Web applications, not real domain names, protocols, an
I recently encountered some problems during the capture of soft exam questions for the purpose of capturing the online exam. the following article mainly describes how to use python to crawl the ip address of the soft exam questions for automatic proxy, this article is very detailed. let's take a look at it. I recently encountered some problems during the capture of soft exam questions for the purpose of ca
. NET functions for IP retrieval include page. Request. userhostaddress, which is easy to use, but sometimes the real IP address cannot be obtained.There are bugs in the so-called "getting real IP addresses" method on the Internet, but the multi-layer transparent proxy is not taken into account.
MajorityCodeFor examp
On the use of Sohu Sina IP Library query interfaceDirect output of guest IP and city:Scriptsrc= "Http://pv.sohu.com/cityjson?ie=utf-8" >Script>Scripttype= "Text/javascript">document.write ('IP:'+Returncitysn.cip+''+returncitysn.cname);Script>JS gets current provinces and cities based on IP addressThe map provides the c
NGINX+TOMCAT+SPRINGMVC Get user Access IP1.Nginx Reverse Proxymodifying Nginx configuration FilesLocation/ { *********** before code *******; Proxy_set_header host $host; Proxy_set_header X-forwarded- for $proxy _add_x_forwarded_for; // set the proxy IP header, the parameters when the code gets Proxy_set_header x-real-
In the previous section, I probably talked about the Python crawler's writing process, starting with this section to focus on how to break the limit in the crawl process. For example, IP, JS, verification code and so on. This section is mainly about leveraging IP proxy breakthroughs.1. About the agentSimply put, the agent is a change of identity. One of the ident
PHP obtains the proxy server ip address used by the user, that is, the real ip address. Using www.phpchina.combbsthread-12239-1-1.html in PHP, use $ _ SERVER [REMOTE_ADDR] to obtain the IP address of the client. However, if the client uses a proxy SERVER to access the obtain
There are bugs in the so-called "getting real IP addresses" method on the Internet, but the multi-layer transparent proxy is not taken into account. Majority
Code Similar to: String IPaddress = (httpcontext. Current. Request. servervariables ["http_x_forwarded_for"]! = NULL httpcontext. Current. Request. servervariables ["http_x_forwarded_for"]! = String. Empty )? Httpcontext. current. request. servervari
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