Develop Reference

Java, Get response via socket

I know that I had to search on Google, Youtube and Stackoverflow before I ask my question on Stackoverflow .
But I swear I watched many videos on Youtube, And I searched for many ways on google and Stackoverflow ! to solve my problem. ,
I can't get the full response,
And now i'm stuck with this,

Facebook checks for browser:
Add agent string to request:
String content1 = "GET /zuck HTTP/1.1\r\nHost: www.facebook.com\r\nuser-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.97 Safari/537.36\r\n\r\n";

How do I access WhatsAppWeb in an Android WebView?

I want to use WhatsAppWeb (web.whatsapp.com) in an Android app. I've tried using a WebView and load the URL but I'm redirected to the regular WhatsApp page (www.whatsapp.com). I tried changing the User Agent
mWebView.getSettings().SetUserAgentString("Mozilla / 5.0 (Windows NT 10.0; Win64; x64) AppleWebKit / 537.36 (KHTML, like Gecko) Chrome / 78.0.3945.79 Safari / 537.36");
but this only works if the app is started the first time. Each further start it redirects. Deleting Cache works (no redirect) but then I have to "authenticate" the device again.
Any ideas?

Did you try using custom webview client? Please check this http://www.technotalkative.com/android-webviewclient-example/

How to get mobile response of webpage using jsoup

I am trying to get response of website using JSoup.
I am able to get the response of website using JSoup as follows, it returns the desktop website's response
String str = "http://hplus.com.vn/xem-tivi-htv9-full-hd-1080-52834.html";
doc = Jsoup.connect(str)
.userAgent("Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/30.0.1599.101 Safari/537.36")
.get();
Same way, I am trying to get the response for mobile version to this same site as follows,
doc = Jsoup.connect("http://hplus.com.vn/xem-tivi-htv9-full-hd-1080-52834.html")
.userAgent("Mozilla/5.0(Linux; U; Android 4.2; en-gb; LG-P500 Build/FRF91) AppleWebKit/533.0 (KHTML, like Gecko) Version/4.0 Mobile Safari/533.1")
.get();
But this gives only desktop/laptop version response and not the mobile response.
Picture Format web :
Picture Format mobile :
How to get the mobile response from jsoup.
Thanks in advance.

Perform a search using JSoup

Since the Soundcloud Java API is discontinued, I want to perform a search on their site using JSoup. I am currently using this code:
Document doc = Jsoup
.connect("https://soundcloud.com/search?q=deep%20house")
.userAgent("Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2228.0 Safari/537.36")
.timeout(5000).get();
But the webpage is giving me a message that I should be using a newer browser:
<p class="messageText sc-text-light">Your current browser isn't compatible with SoundCloud.<br>Please download one of our supported browsers. Need help?</p>
I have tried using other user agents which I found here but none seems to work so far. What can I do to prevent this message from popping up?

You can try the below snippet. User agent string taken from this thread.
Document doc = Jsoup
.connect("https://soundcloud.com/search?q=deep%20house")
.userAgent("Mozilla/5.0 (Linux; Android 4.1.1; Nexus 7 Build/JRO03D) AppleWebKit/535.19 (KHTML, like Gecko) Chrome/18.0.1025.166 Safari/535.19")
.timeout(5000).get();
System.out.println(doc);

How to identify Web request from PDA/Desktop/Server?

I would like to know if is possible to identify (with JAVA) the kind of computer used to make a request, for example: Server, desktop, PDA (tablet,cellphone,etc)?
Thank you!

Depends on what are you using to accept requests. For http requests, informations are in User agent section of request header.

Yes it is to a degree. You have to get the User-Agent string from the HTTP request. How to do that will depend on your Java and framework implementation but that's the direction you should take. You will have to examin the string for browser versions, mobile, etc...
Here is the request from my Mac:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_5) AppleWebKit/536.30.1 (KHTML, like Gecko) Version/6.0.5 Safari/536.30.1
And here from my Windows server:
Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)
And here from my iPhone:
Mozilla/5.0 (iPhone; CPU iPhone OS 6_1_3 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Version/6.0 Mobile/10B329 Safari/8536.25