Curl Crawl: Curl Web Crawl

Hands-on guide to bypassing restrictions when grabbing data with Curl

The friends who engage in network crawler know that the most afraid of using Curl to grab data to meet the IP blocking, which is like you go to the supermarket to try to eat, try too many families will be security guards staring at a reason. Today we will teach you a few tricksProtecting Real Identities with Proxy IPsThe practical tips for smoother data collection.

Curl basics to remember

Reviewing the basic Curl posture first, the following code grabs the content of the web page:

curl https://example.com

But running naked directly like this is easy to be found by the target website. Just like riding an electric bike without a helmet, the police uncle will find you in trouble in minutes.

Proxy IP real-world configuration

Here's the kicker! Put a "vest" on Curl and use ipipgo's proxy service to hide the real IP, here we recommend two common methods:

Method 1: Directly hang the proxy on the command line

curl -x http://username:password@proxy.ipipgo.com:port https://target-site.com

Method 2: The Profile Approach

Write in the ~/.curlrc file:

proxy = http://proxy.ipipgo.com:端口号
proxy-user = "account:password"

Guidelines for demining common pitfalls

A must-see QA session for beginners

Q: Why use a paid proxy? Don't the free ones smell good?
A: Free proxies are like the toilet in a public restroom, which everyone has used. ipipgo's exclusive proxies are like your own bathroom, which is both clean and safe.

Q: What if it's too much trouble to enter my password every time?
A: You can use the API provided by ipipgo to dynamically obtain a proxy, and their SDK supports automatic authentication, which saves your effort.

Q: What should I do if I encounter a website CAPTCHA?
A: with ipipgo'sHighly anonymous agents+ Randomizing the UA header drastically reduces the probability of triggering validation.

Why ipipgo?

A real-world comparison of three service providers reveals:

• Response time: 200ms faster on average for ipipgo
• Availability: Stable at 99.8% or above
• After-sales support: 7 × 24 hours online troubleshooting

Especially theirDynamic Residential AgentsIt is a perfect solution to the scenarios where you need to change your IP frequently. New users get a 1G traffic trial with registration, which is quite conscientious.

Advanced Tips and Tricks

A bonus for veteran drivers: smart switching with ipipgo's API:

! /bin/bash
PROXY=$(curl api.ipipgo.com/getproxy)
curl -x $PROXY https://target.com

This script will automatically get the latest proxy, much more efficient than manually changing IP. Be careful to control the frequency of requests, don't tire out the other servers.

Finally, to tell the truth, choose the right proxy service provider can save at least 50% tossing time. Instead of tossing free proxies yourself, why not use a professional service like ipipgo, where data collection can be twice as effective with half the effort?