HTTP 499 Error: Client Outage Resolution

What's wrong with HTTP 499 errors?

Nine times out of ten, people who are crawlers or do data crawling have seen this"499 Client Closed Request"The first thing you need to do is to get the server to respond to your request. Simply put, your computer (client) can not wait for the server to respond to their own first quit. It's like hanging up the phone before the other person answers. This is the case inProxy IP Usage ScenariosParticularly common, especially when the network environment is unstable or when the target site's anti-crawl mechanism is triggered.

How did proxy IPs become a savior?

A regular direct connection is like walking down a one-way street, and a 499 error is like a sudden gale blowing you down. AndDynamic Residential Proxy for ipipgoThe equivalent of a steel bridge for you:

We've tested it with theirEnterprise Static Residential IPDoing data collection, the 499 error rate was able to drop from 37% to under 2%. The secret lies in theirDual channel redundant transmissionTechnically, even if one line is jammed, the spare tire line immediately tops it off.

Hands on with proxies to avoid 499s

Here's an example of a Python crawler that teaches you how to use ipipgo's proxy configuration:

import requests
proxies = {
    'http': 'http://用户名:密码@gateway.ipipgo.com:9020',
    'https': 'http://用户名:密码@gateway.ipipgo.com:9020'
}
 Key parameter settings
response = requests.get(url, proxies=proxies,
                       timeout=(3.05, 27)) 3 seconds to connect 27 seconds to read

Note the two numbers.: The first 3 seconds is the maximum time to establish a connection, and the last 27 seconds is the patience value to wait for data. It is recommended to adjust the response speed according to the target website, e-commerce website is recommended to set (5,30), API interface can be (2,15).

Three Essential Axes for Advanced Players

1. IP warm-up strategy: New IPs are "raised" with low-frequency requests for half an hour to avoid being recognized as bots.
2. abnormal melting mechanism: 3 consecutive 499 errors automatically hibernate the IP for 15 minutes.
3. Protocol Preferences: Enforce use of HTTP proxy for HTTPS sites (ipipgo supports protocol conversion)

There is feedback from customers who have used these tips with thePay-as-you-go packages from ipipgo, the program cost was reduced by 40% straight away. especially theirIP Quality Scoring System, can automatically weed out slow responding nodes.

Frequently Asked Questions QA

Q: Is it legal to use a proxy IP?

A: Totally legal! All IPs in ipipgo come from regular carriers, just as it's normal for you to switch to a different cell phone to access the Internet.

Q: Why do you recommend static residential IPs?

A: Dynamic IP is cheaper, but it is like renting an apartment always changing the address is easy to be suspected. Static IP is equivalent to a long term rental apartment with better stability.

Q: How do I choose the best value for my package?

A: Crawling Data Selection"Business Edition Dynamic IP PoolThe need for a high stability option"Enterprise Edition Static IP. Newbies are advised to try the $19 experience pack first.

Don't panic when it comes to 499, remember the key points:Optimized timeout settings + stable proxy channel + intelligent error handlingThe Proxy service of ipipgo is like an airbag for your crawler. With ipipgo's proxy service, it's like putting an airbag in your crawler, and you won't be afraid to plant your head when you hit network bumps. They also recently came out with"499 Error Auto Fix" functionIt can automatically retry and switch the line, the handicapped party gospel!