Curl Ignore Proxy: Curl Bypass Proxy Configuration Methods

No beating around the bush! Straight to the top of the Curl Ignore Proxy trick!

Brothers engaged in the development of all understand, sometimes using Curl to send a request for dead not go proxy, anxious to smash the keyboard. Don't panic! Today we useThe Most Straightforward Operational GuidelinesThe first step is to teach you three tricks to deal with the problem of agent configuration, and incidentally, a reliable agent service (self-owned products must be boasted).

The First Style: The Great Law of Environment Variables

System environment variables have the highest priority and play this way in the terminal:

export http_proxy=""
export https_proxy=""
curl http://example.com

This trick is forad hoc testThe scenario is like putting a golden mask on Curl, so that any proxy settings can't penetrate it. Our ipipgo users often use this trick when doing interface debugging, especially when they need toCompare the effect of direct connection and proxyThe time.

Style 2: Parametric Hardcore Masking

Curl comes with the -noproxy parameter is the real deal:

curl --noproxy "" http://example.com

Note that this asterisk must be wrapped in double quotes, Windows with single quotes will pounce. Last time a customer to collect public government data, with this trick with ipipgo dynamic residential agent, perfect realization!Multi-Channel Data ComparisonThe

Style 3: Profile Qiankun Da Nuo Yi

Modify the ~/.curlrc file (create a new one if you don't have one):

noproxy = 

This is the equivalent of putting a permanent buff on Curl, and is suitable for those who need toLong-term direct connectionThe special program. However, remember to comment out this line if you are using ipipgo's TK proxy.

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Practical QA session

Q: Why does -noproxy still go through the proxy when it is configured?
A: Eighty percent of the environment variables are not clean, it is recommended to use theenv | grep proxycheck residues

Q: What if I need to switch proxies frequently?
A: Dynamic switching with ipipgo's API interface, sample code:

curl -x "http://用户名:密码@proxy.ipipgo.net:端口" http://target.com

Q: A great trick to test if the proxy is working?
A: Access with direct connection firstifconfig.meRecord IP and compare with proxy access

Guide to avoiding the pit

Recently, I came across a typical case: a client's crawler scripts wereAlso set up environment variables and code agentsThis led to a "fine-tuning" of the traffic. Later changed to use ipipgo's client tool, comes with atraffic diversion functionOnly to solve the problem. That's why it's better to leave professional things to professional tools, don't die with yourself.

One last word of caution: if you encounter problems with proxy configuration, don't forget ipipgo's1v1 Technical SupportIt is really able to fight. Last time there is a cross-border e-commerce friends, used our customized program, concurrent request performance directly doubled. Specifically how to play? You try to know!