Node.js request example: Node.js proxy request example

Hands-on with Node.js to play around with proxy IPs

Web developers know that it's easy to send requests directly from your own IP.Being targeted by the site's anti-crawl mechanismThe first thing you need to do is to find a reliable proxy IP for your program. This time to find a reliable proxy IP is like a program to wear a cloak of invisibility, today we take Node.js to give a chestnut, teach you how to use proxy IP to do network requests.

What's the point of a proxy IP anyway?

To cite a real scenario: do e-commerce price monitoring program apes Xiaoming, even with their own IP to capture three days of data, the results of the fourth day suddenlyI can't get any data.This is a typical IP blocking. This is a typical IP is blocked, this time if you use ipipgo's dynamic proxy pool, every hour automatically change IP, the site simply can not catch your real address.

Node.js live code

Let's use the axios library as a chestnut and install a dependency first:

npm install axios

Then on to the hard dish code, note the proxy settings section:

const axios = require('axios');

async function fetchWithProxy() {
  async function fetchWithProxy() { try {
    const response = await axios({
      method: 'get', url: '', 'get'
      method: 'get', url: 'https://target-site.com/data', proxy: {
      proxy: {
        host: 'gateway.ipipgo.com', // proxy server address
        port: 9021, // port given by the service provider
        auth: {
          username: 'Your account', // password: 'Exclusive password'
          password: 'Exclusive password'
        }
      }
    });
    console.log('Capture successful:', response.data);
  } catch (error) {
    console.error('Error:', error.message); }
  }
}

// Remember to call the function
fetchWithProxy(); } // Remember to call the function fetchWithProxy().

Here's a couple.easy to fall head over heelsThe place:

1. Do not write the proxy address directly to death, it is best to read from the configuration file
2. Passwords are recommended to be saved in an environment variable
3. Timeout time to be set reasonably (3-5 seconds recommended)

Three Iron Rules for Choosing a Proxy Service Provider

There are a plethora of agency service providers on the market, but remember these threelife-preservation guidelines::

1. IP purity should be higher than 951 TP3T (like ipipgo's business proxy pool purity of 98.71 TP3T)
2. Must have automatic switching mechanism (ipipgo supports failure to automatically cut nodes)
3. Response speeds below 800ms (average measured ipipgo response is around 560ms)

Frequently Asked Questions QA

Q: What should I do if the proxy suddenly fails?
A: First check whether the account privileges expire, and then try to manually switch IP. ipipgo if their technical customer service 7 × 24 hours online, the response speed thief.

Q: The program runs and slows down?
A: The probability is that the current IP is speed-limited, it is recommended to add an automatic retry mechanism in the code, or directly contact ipipgo to change the high-speed channel.

Q: What if I need a multi-region IP?
A: ipipgo's global nodes cover 200+ countries and regions, just add X-Region parameter to the request header to specify the region, such as X-Region: us_texas.

Guide to avoiding the pit

The newbie's common mistakeFive Deadly Mistakes::

1. write the proxy IP in the client code (absolutely deadly behavior!)
2. Use free proxies (99% is a pit, slow and insecure)
3. Do not handle proxy exceptions (try-catch must be added to the code)
4. Ignore request header settings (remember to emulate a normal browser)
5. Agent quality is not monitored (ipipgo has a real-time monitoring dashboard in the backend)

Lastly, I'd like to say that choosing the right proxy service provider can really save you half the headache. Like our team has been using ipipgo for over two years now, and theirIntelligent Routingrespond in singingRequest for compensation for failureThe mechanism is really stable, especially when doing large-scale data collection, the success rate can be pulled directly from 60% to more than 92%. Recently, their family also on the new pay-per-volume model, especially friendly to small projects, interested in going to the official website to take a look at the demo example.