Curl Authentication: Curl Proxy Authentication Methods

When proxy IP meets Curl, how to play authentication without flipping?

Nine out of ten friends engaged in data collection have used Curl, but to Curl plus proxy to do authentication of this matter, there are always people stuck in the inexplicable link. Today, we will break open the crumbs to talk about how to use ipipgo's proxy IP to make Curl both safe and smooth.

First, why should proxy IP authentication be set separately?

Many newbies think that the configuration of the proxy IP address is all right, the results can not be connected to start scolding the service provider. In fact, just like into the neighborhood to swipe the card, the proxy server must also be identified.Here's the point:The IP address is the equivalent of the cell gate, and the account password is the access card for your unit door.

curl -x "http://用户名:密码@proxy IP:port" https://目标网址

For example, with ipipgo's proxy service, you'd have to put theirdynamic account passwordembedded in the command. An easy pitfall to plant here is thespecial character escapingIf there is an @ or such symbol in your password, remember to replace it with % plus the ASCII code.

II. Three life-preserving authentication postures

These three configurations are recommended according to the usage scenarios, just copy the homework directly:

Focusing on the third high-level play, this is how you can configure it when using ipipgo's proxy:

machine Proxy IP domain name
login Your account
password Your password

This method is the most secure and also automatically matches multiple proxy nodes, which is especially suitable for those who need toFrequent IP switchingThe situation.

III. Guidelines for operational demining

Don't panic when you encounter 407 agent authentication errors, troubleshoot them in this order:

1. Check to make sure you're not puttinghttp is written as httpsProtocols (with special attention to ipipgo's tunneling agent)
2. Use the echo command to individually test whether the account password is valid or not
3. Manually enter the proxy parameters in your browser to see if it connects.
4. Contact ipipgo customer service to find outwhitelisting status

There is an evil situation: obviously the configuration is correct, but can not connect, may be theLocal time is not synchronizedThis causes the signature to fail. This is solved by executing ntpdate under Linux.

IV. QA First Aid Kit

Q：What should I do if my password with special symbols is always reported as an error?
A: Wrap the password in single quotes, such as 'p@ssw0rd123', or just copy the escaped version provided by ipipgo when generating passwords with special characters on the web side.

Q: How to manage multiple proxy IPs at the same time?
A: ipipgo'sAPI Dynamic AcquisitionFunction can be solved with jq tools to parse the JSON response and switch proxies automatically:

proxy=$(curl ipipgo's API address | jq -r '.proxy')
curl -x $proxy Destination URL

Q: What if I have to go through two proxies for my company's intranet?
A: In this case it is recommended to go on ipipgo'sTunnel Agentservice, you only need to configure the authentication information once to automatically complete the internal and external network jump.

Fifth, choose the right tool to save half the effort

It is better to toss the proxy certification yourself than to find a reliable service provider. ipipgo's three main advantages:

• Certification Information30 seconds to refreshnot worried about leakage
• Supports simultaneousHTTP/HTTPS/Socks5Three protocols
• Failure automatic retry function, drop rate below 0.1%

One last piece of cold knowledge: with ipipgo'sIntelligent Routingfeature, Curl requests will automatically go to the fastest node, more than 3 times more efficient than manual switching. Specifically how to configure? Their technical documentation is written in a very clear way, according to copy two minutes to get it done.