webview set proxy ip: Android WebView inline proxy IP configuration

First, why the WebView layer "vest"?

Anyone who has been involved in Android development knows that WebView follows the system network settings by default. But there are some scenarios likeNeed to put different vests on different pagesFor example, when doing data collection, you have to disguise yourself as a user in different places, or test the effect of accessing different regions. At this time directly change the system proxy is too stupid, rather than a separate WebView to wear a small vest.

Second, the hand set vest tutorial

Here to teach you two practical posture, remember to prepare ipipgo proxy IP in advance, it is recommended to use their dynamic residential packages, cheap big bowl also with automatic switching.

// Method 1: Modify the proxy via reflection (good for single requests)
public static void setProxy(WebView webView, String ip, int port) {
    try {
        Class networkClass = Class.forName("android.net.Network");
        Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress(ip, port)); webView.getSettings()
        Proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress(ip, port)); webView.getSettings().setProxy(proxy);
    } catch (Exception e) {
        e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); }
    }
}

// Method 2: Intercept the request to add a proxy (recommended solution)
webView.setWebViewClient(new WebViewClient() {
    @Override
    public WebResourceResponse shouldInterceptRequest(WebView view, WebResourceRequest request) {
        // Here we call the ipipgo API to get the latest proxy IP.
        String proxyUrl = "http://api.ipipgo.com/getproxy?type=http"; // Initiate the actual request using the proxy IP.
        // Initiate the actual request using the proxy IP...
    }
}).

III. Guide to avoiding the pit

A heads up for the guys on the potholes they stepped in during the real test:

1. Competence issues: Remember to add network permissions in AndroidManifest.xml
2. HTTPS certificate: Rewrite onReceivedSslError for certificate errors.
3. Memory leakage: Don't hold the Activity reference directly in WebViewClient.

IV. QA First Aid Kit

Q：Why doesn't the proxy take effect after I set it?
A: First check if the IP port is correct, it is recommended to use ipipgo client to test the connectivity. android 7.0 or above system should pay special attention to network security configuration.

Q: Should I choose dynamic or static IP?
A: high-frequency access with dynamic IP (enterprise version), the need for fixed authentication with a static IP. ipipgo's dynamic residential enterprise version of more than 9 yuan 1G, cheaper than buying milk tea.

Q: Does it support Socks5 protocol?
A: must! ipipgo full protocol support, in the code to change a parameter thing. Their TK line latency can be reduced to less than 200ms.

V. Why ipipgo?

This one has three great proxy IPs:

1. More than 200 countries around the world, as easy as changing clothes.
2. Provide ready-made code samples, novice can also quickly get started
3. There are exclusive customer service to help you adjust the reference, more intimate than a boyfriend!

Especially theirDynamic Residential Enterprise EditionThe price of $9.47/G also comes with automatic IP rotation, and the old man who did the crawler used it and said it was really good. If the money is not bad directly on the static residential IP of 35 dollars, with the local network of the same.

One final note: Proxy IPs are a thing of the past.steadyThe word, don't try to cheap with the pheasant service provider. ipipgo support pay per volume, first use and then buy not to lose, out of the problem can also find the technical guy remote assistance, than those who play the disappearance of a lot of better.