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Questions tagged [urlconnection]

URLConnection is a class that enables Java code to access data available from various urls.

674 questions
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Java: resume Download in URLConnection

I wrote a program that downloads some files from some servers. Currently program works properly. But I want to add resume support to it. I'm doing it like this But the result file is corrupted: .... File fcheck=new…
Ariyan
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connection.setRequestProperty and excplicitly writing to the urloutputstream are they same?

URL url = new URL("http://www.example.com/comment"); HttpURLConnection connection = (HttpURLConnection) url.openConnection(); connection.setDoOutput(true); connection.setRequestMethod("POST"); Is connection.setRequestProperty(key, value); the…
Bunny Rabbit
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Use java http connection instance after exception

Is the following code safe: try { URL url = new URL(urlRequest); conn = (HttpURLConnection)url.openConnection(); conn.setConnectTimeout(30000); conn.setReadTimeout(30000); conn.setRequestProperty("Accept-Encoding", "gzip,…
Shcheklein
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Getting a reference to Java's default http(s) URLStreamHandler

I have a library that I need to use in one of my projects, which unfortunately registers its own URLStreamHandler to handle http-URLs. Is there a way to get a reference to Java's default http- and https-URLStreamHandlers, so I can specify one of…
Markus A.
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Httpclient deprecated

I'm developing an app using HTTPclient for datatransfer. Since HTTPClient is deprecated, I want to port the network part to URLConnection. ConectionHttpClient.java package conexao; import java.util.ArrayList; import java.io.BufferedReader; import…
Fernando Castilho Marmol
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URLConnection FTP list files

URL url = new URL("ftp://user:pass@ftp.example.com/thefolder/"); URLConnection connection = url.openConnection(); ... // List files in folder... Using something like the above, I was wondering how I could grab a list of files within folder…
KS1
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Setting custom HTTP request headers in an URL object doesn't work

I am trying to fetch an image from an IP camera using HTTP. The camera requires HTTP basic authentication, so I have to add the corresponding request header: URL url = new URL("http://myipcam/snapshot.jpg"); URLConnection uc =…
Blagovest Buyukliev
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How to get a proxy-less connection in Java?

How do I avoid going through the ProxySelector when making a connection with URLConnection or rather how to get a connection guaranteed free of whatever proxies Java knows about ? I thought this was what Proxy.NO_PROXY was for. Quoting from the…
peterh
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Getting SSL certificate details from URL Connection request

In android, I want to make a URL connection to a HTTPS URL. After the connection is opened I want to be able to read the certificate from the server and obtain the issued common name and organisation strings? Is this possible? If so what is the best…
FlashAsh80
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Downloading a portion of a File using HTTP Requests

I am trying to download a portion of a PDF file (just for testing "Range" header). I requested the server for the bytes (0-24) in Range but still, instead of getting first 25 bytes (a portion) out of the content, I am getting the full length…
Jeffry Young
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Removing URLConnection object from ArrayList

In my program I need to track list of opened connections to some HTTP server - in order to disconnect them at once if needed. I faced the following problem. If I connect to HTTP server everything works perfect, but if to HTTPS, then connections are…
Andrew Orlov
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Download binary file from Github using Java

I'm trying to download this file (http://github.com/downloads/TheHolyWaffle/ChampionHelper/ChampionHelper-4.jar) with the following method and it doesn't seem to work. I'm getting an empty/corrupt file. String link =…
Bert De Geyter
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It is possible to stop a thread that is connecting to URL with httpConnection.connect()?

i have a thread that is connecting to a url to obtaining some data. Sometimes the method httpConnection.connect(); taked too munch time to get the response, and i want to limit the loading dialog of this connection thread to 5 seg. I tryed adding…
Pableras84
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Why would URLConnection timeout after 6+ minutes instead of 5 seconds?

I am copying this method verbatim from my application, which isn't complete yet but it does attempt to provide me with a timeout stack trace if things don't go smoothly: protected boolean isHttpAlive() { boolean isHttpOk = false; …
Regex Rookie
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Java: What is the purpose of setDoInput in URLConnection

Possible Duplicate: Java HttpURLConnection Would this method be used for example if I want to read the response to a POST method call from the server I am connected to?
Teererai Marange
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