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When I will get HTTP 504 error using java HttpUrlConnection Class


When I will get HTTP 504 error using java HttpUrlConnection Class

By : AndrewC
Date : November 22 2020, 11:17 AM
Hope that helps
504 Gateway Timeout - The server was acting as a gateway or proxy and did not receive a timely response from the upstream server
code :


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Java: HTTP PUT with HttpURLConnection

Java: HTTP PUT with HttpURLConnection


By : user1698562
Date : March 29 2020, 07:55 AM
I wish did fix the issue. There's one easy way to find out: run Wireshark and see what's actually happening on the network. I've found that to be the most reliable way of diagnosing this sort of issue - your client could have bugs, the library could have bugs, the server could have bugs, but Wireshark will show you what's really happening.
EDIT: Okay, for HTTPS it's a little trickier. You can use Fiddler if you're running on Windows, which is a proxy - it can cope with HTTPS if you can persuade your client code to accept its certificate, but that's a little more intrusive... putting a proxy in the way clearly changes what the traffic looks like.
Flaw in checking HTTP 500 error HttpUrlConnection Java

Flaw in checking HTTP 500 error HttpUrlConnection Java


By : User123
Date : March 29 2020, 07:55 AM
I wish did fix the issue. My issue is with status != 200 , when I run this script (3) different times, it'll print out the value for if{} (1) times, the else{} (1) time, and the catch{} another. , You need to check status before start to parse...
code :
    URL url = new URL(UrlToParse );
    HttpURLConnection con = (HttpURLConnection)url.openConnection();
    int status = con.getResponseCode();
    if (status == 200){
        parser.parse(UrlToParse);  
        ....
    } else {
        // status is not 200
    }
Java - HttpUrlConnection contains HTTP document instead of JSON

Java - HttpUrlConnection contains HTTP document instead of JSON


By : Blue_Phoenix
Date : March 29 2020, 07:55 AM
With these it helps I am trying to download a MP3 file of a given youtube file from Youtubeinmp3.com ,
... i dont know why the API sometimes returns a HTTP document
XML over http using HttpURLConnection - getting error 401

XML over http using HttpURLConnection - getting error 401


By : Jay Barraza
Date : March 29 2020, 07:55 AM
I hope this helps you . I am trying to send XML over http url using HttpURLConnection. , Please try adding authentication header as follows
code :
String encoded = Base64.getEncoder().encodeToString((username + ":" + password).getBytes(StandardCharsets.UTF_8));
conn.setRequestProperty("Authorization", "Basic " + encoded);
Why the java.net.HttpURLConnection become sun.net.www.protocol.http.HttpURLConnection?

Why the java.net.HttpURLConnection become sun.net.www.protocol.http.HttpURLConnection?


By : bazinga_jr
Date : March 29 2020, 07:55 AM
this one helps. Because java.net.HttpURLConnection is an abstract class, and sun.net.www.protocol.http.HttpURLConnection is its implementation in the Oracle JRE.
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