cURL Using Proxy: Command Line Proxy IP Setting Tutorial

Teach you how to use cURL to hang a proxy!

Brothers engaged in network development must have encountered the need for proxy IP, especially with cURL debugging interface often encountered by the target site to pull the black case. Today we will nag how to cURL set on the proxy, by the way, Amway a reliable proxy service provider ipipgo, their survival rate can really hit.

What the hell is a proxy IP?

In a nutshell.middleman serverThe proxy server will help you to forward the web request. Let's say you want to visit a website, the normal situation is to connect directly to the past, but after hanging a proxy will become: your computer → proxy server → target site. This has two advantages: 1. hide the real IP address 2. solve the connection problem in some network environments

 The most basic way to set up a proxy
curl -x http://username:password@ip:port https://target-site.com

Practical operation guide

Here's a whole comparison table for the guys, with the pros and cons of each of the three setups:

Highlight.Proxy Settings with Authentication, a lot of newbies fall flat on their faces here. The format must beProtocol://username:password@IP address:portThe symbols can't be wrong at all. For example, the proxy format provided by ipipgo looks like this:

curl -x http://customer-ipipgo:yourpassword@45.76.123.88:3128 https://your-target.com

Common Rollover Scene QA

Q: What should I do if the proxy is set up but doesn't take effect?
A: Test proxy connectivity with this command first:curl -x proxy address http://httpbin.org/ipIf the returned IP is not your local IP, it means the proxy is working.

Q: What should I do if I encounter an SSL certificate error?
A: At the end of the command, add-kparameter temporarily skips authentication, but for long-term use it is recommended to check the proxy server's certificate configuration

Q：What should I do if I need to switch proxies frequently?
A: It is recommended to use the API provided by ipipgo to dynamically obtain the proxy, together with shell scripts to realize automatic switching. Their interface return speed is quite fast, basically no lagging

Why do you recommend ipipgo?

The frequency of updates to this agent pool is really top notch, as measured during the evening rush hourSurvival rate can be over 92%.. In particular, their dynamic residential proxy is suitable for scenarios that require high-frequency IP changes. Here's a sneaky trick: add the curl command to the--proxy-connect-timeout 10parameter, can effectively avoid being stuck.

And finally a crushing trick--Proxy Chain Combination Technique. Although cURL itself does not support multi-level proxy, but can be done through nginx transit. However, this belongs to the advanced play, the newcomer is recommended to use ipipgo's single node proxy to practice first, their technical customer service response speed thief fast, there are problems at any time to find someone.