wget user agent setup tips: simulate browser behavior

First, why do we need to put a "vest" on the wget?

With wget under something like running naked - the server a look at the User-Agent to know is a robot visit. Many websites are particularly sensitive to this "naked" request, light speed limitations, or directly blocked IP. last year, a friend to do data collection and I complained that he just used wget to grab 200 pages, the entire IP section of the server room have been blacked out, and it was only then that I remembered to disguise the User-Agent.

Here's one.cold knowledgeSome websites not only look at the User-Agent, but also check the frequency of requests, cookie trails, etc. It is not enough to change the UA alone. It's not enough to change UA alone, you have to work with proxy IPs to get a perfect disguise. It's like playing hide-and-seek, where you not only have to wear a mask, but also have to keep changing your hiding place.

Second, hand to teach you to wget dress up

Let's look at a basic operation first:

wget --user-agent="Mozilla/5.0 (Windows NT 10.0)..." https://example.com

But it's too much trouble to knock out the command every time, you canModify the wget configuration file(~/.wgetrc):

header = User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7)...

The advanced play is to prepare multiple UA rotations:

Third, give the wget with "instantaneous transfer"

Changing UA alone is like changing your clothes without changing your face - sooner or later you will be recognized. This time you need a proxy IP to change the face. Take ipipgo's proxy service as an example, the configuration method is thief simple:

wget -e use_proxy=yes -e http_proxy=123.123.123.123:8888 https://target.com

pay attention toAlso set the protocol type::

• HTTP proxy with -proxy-user and -proxy-password parameters
• Socks5 proxy requires tsocks or proxychains to be installed first

Here's a shout out to ipipgo'sDynamic Residential IP PoolThe success rate can be mentioned above 90% by automatically changing IP for each request, together with UA disguise. The IP survival time of their family is controlled just right, which does not waste resources and ensures task continuity.

IV. The Triple Boundary of Anti-Blocking

Based on real-world experience, complete protection should be paired like this:

1. Change of UA every 10 requests
2. Change ipipgo's proxy IP for each request
3. Send requests at random intervals of 1-5 seconds

Remember to add exception handling in the script, encounter 429 status code will automatically switch IP. here is a small trick: the ipipgo API integrated into the script, when the detection of IP blocked, automatically apply for a new IP to continue the task.

V. Practical QA first aid kit

Q: Setting up UA or being recognized as a robot?
A: Check if the request header is complete, some sites will validate fields such as Accept-Language. It is recommended to copy the complete request header with the browser developer tool.

Q: Proxy IPs are not working when I use them?
A: In this case it is recommended to change to ipipgo'sLong-lasting static residential IPThe IP addresses are available for 24 hours on a single IP, which is suitable for scenarios where sessions need to be maintained.

Q: How do I test the camouflage effect?
A: Visit https://httpbin.org/user-agent to view the returned UA information, or verify browser characteristics with an online fingerprinting tool.

Finally, a nagging word: do not be cheap with a free proxy, those IP early by the site in a small book. Like ipipgo this professional service although it costs money, but can save the time cost of tossing, the key data security is also guaranteed. After all, with a real agent to dare to say real traffic!