curl sends POST requests: curl proxy POST sending

Teach you how to send POST request with curl proxy.

Today we're going to talk about how to use curl as a command-line tool.Sending a POST request with a pending proxy IPThis thing sounds mysterious, but in fact it is similar to riding a bicycle with a safety helmet. This thing sounds mysterious, but in fact it is similar to riding a bicycle with a safety helmet, an additional layer of protection only. I'm going to break it down step by step, so you'll know how to use it.

Why do you need a proxy for curl?

For example, your home network operator is like a chatty old lady who keeps a small notebook of every request you send. Using a proxy IP is equivalent to hiring an errand boy to deliver your mail for you, so the mom can't see your real address. Especially when doing data collection and interface testing.Proxy IPs prevent real IPs from being bannedThe

 This is the basic POST request format
curl -X POST https://example.com/api
  -d 'username=ZhangSan&password=123456'

Putting a proxy vest on curl

Here's the point! To get curl to go proxy, remember this foolproof formula:The -x parameter is followed by the proxy addressI recommend ipipgo's proxy service. We recommend using ipipgo's proxy service, which provides a large number of residential IPs, and the connection speed is as smooth as Dove chocolate.

 The posture of the http proxy
curl -x http://user:pass@proxy.ipipgo.com:8080
  -X POST https://target-site.com/login
  -d 'user=test&action=submit'

In case you want to use an HTTPS site, remember that the proxy server has to support SSL. ipipgo'sPremium PackageAll with this feature, pro-tested upload and download data a solid batch.

Too many parameters to remember? Look at this table

Real-world common rollover scene

Scene 1:Returns 403 Disabled Access
Eighty percent of the proxy IP was the target site pulled black, it is recommended to change ipipgo's dynamic IP pool, their IP survival time is short, anti-crawler are too late to seal.

Scene 2:Connection timeout
First ping the proxy server address, if the delay is high, in the ipipgo background switchinglow latency nodeDon't hang on to one tree.

QA First Aid Kit

Q: What should I do if I slow down after using a proxy?
A: Check the proxy type, data center proxy is cheap but slow. Change ipipgo'sResidential AgentsThe speed can be increased by more than 60%.

Q: How do I know if the proxy is active?
A: Measure the IP with this command first:

curl -x http://代理地址 ip.ipipgo.com/checkip

As a final rant, don't just look at price when choosing a proxy service. The likes of ipipgo can provideStatement of success rate of requestsThe only way to save money is to use it. After all, we want to save money, not get ourselves a job, right?