NET Setup Proxy IP: Application Web Request Proxy Configuration Solution

NET Proxy IP Configuration

Brothers engaged in network development understand that sometimes the program has to hang a proxy in order to run normal data. NET development, the configuration of the proxy thing is not difficult, but newcomers are prone to step in the pit. Today do not talk about false, directly on theConfiguration options that can be landedThe first thing you need to do is to get your hands on a reliable ipipgo proxy service.

WebClient proxy settings

This is common in old projects, and it's a thief to configure. The key is to pay attention toglobal proxyrespond in singingsingle agentThe difference. To give a chestnut:

var proxy = new WebProxy("ipipgo.proxy.com:8000") {
    Credentials = new NetworkCredential("Account", "Password")
};
WebClient wc = new WebClient { Proxy = proxy };
// Remember to handle exceptions, as the proxy may suddenly go haywire!
try {
    string data = wc.DownloadString("Destination URL"); } catch (WebException ex); wc = new WebClient { Proxy = proxy }; // Remember to handle exceptions.
} catch (WebException ex) {
    Console.WriteLine($ "Proxy is jerking: {ex.Message}"); }
}

Here's a pitfall: if the proxy server requiresdual certification, remember to contact ipipgo technical customer service to open a whitelist. Their dynamic residential packages support this kind of tawdry operation, 35 dollars a month static IP package also send free debugging service.

HttpClient Fancy Play

This is now used in new programs for more flexible configurations. HighlightsAgent pool rotationThe realization of the

var handler = new HttpClientHandler() {
    Proxy = new WebProxy("http://ipipgo.proxy.com:8000"),
    UseProxy = true
}; var client = new HttpClient(handler); { Proxy = new WebProxy("", UseProxy = true)
var client = new HttpClient(handler); // Randomly switch proxy IPs (requires API support).
// Randomly switch proxy IPs (requires API support)
var ipList = await GetProxyIpsFromApi(); // Call ipipgo's API here
var randomProxy = ipList[new Random().Next(ipList.Count)]; // Here call ipipgo API.
handler.Proxy = new WebProxy(randomProxy.Address);

When extracting proxies with ipipgo's API, it is recommended that you set theSurvival time parameterThe most important thing is that they have a dynamic package that can change 500+ IPs per minute. Their dynamic packages can change 500+ IPs per minute, much more stable than traditional proxies. I've tested the crawler program, and the probability of IP blocking dropped from 70% to below 5%.

Underlying WebRequest Configuration

A special program for veteran drivers, suitable for those who want tofine controlof the scenario. Note that certificate validation is handled here:

WebRequest.DefaultWebProxy = new WebProxy("ipipgo.proxy.com:8000");
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;
// Handle HTTPS certificate validation
ServicePointManager.ServerCertificateValidationCallback += (sender, cert, chain, errors) => {
    return errors == System.Net.Security.SslPolicyErrors.None; }; // Handle HTTPS certificate validation.
};

If you encounterSSL handshake failure，八成是代理服务器协议不匹配。ipipgo的TK专线套餐专门解决这种疑难杂症，支持多协议栈兼容。

Treadmill Guide and QA

Q: What should I do if the proxy suddenly fails?
A: First check the IP survival status, use the ipipgo client comes with theHeartbeat DetectionFunction. Dynamic packages are recommended to set the automatic switching threshold, below the 80% success rate automatically change the IP

Q: What if I need high concurrency?
A: Don't use a single IP hardband! ipipgo Enterprise package supportsIP pool concurrencyThe actual test of the stand-alone machine to open 200 threads not blocked. Remember to add a delay in the code, too fast and easy to be anti-climbing!

Q: Proxy authentication always fails?
A: Ninety percent is a coding problem! Convert the account password to UTF8 and then pass the reference. ipipgo's API SupportDual encryption authenticationIt's more secure than traditional base64.

Package Selection Tips

Lastly, don't try to use free proxies on the cheap, as they can leak data and get blocked. ipipgo's fee-based packages come withLegal Compliance AssuranceIf you have a problem, you have a professional law firm to cover it. New user registration fill DEV2024 can get 3 days trial, enough to test the stability.