I am looking to optimize a process that runs continually and makes frequent calls (> 1 per second on average) to an external API via a simple REST style HTTP post. One thing I've noticed is that currently, the HttpUrlConnection is created and closed for every API call, as per the following structure (non essential code and error handlin...
Im trying to improve the Java Html Document a little but i'm running into problems with the HttpUrlConntion. One thing is that some servers block a request if the user agent is a Java VM. Another problem is that the HttpUrlConnection does not set the Referrer or Location header field. Since several sites use these fields to verify that t...
How do I connect to a remote URL in Java which requires authentication. I'm trying to find a way to modify the following code to be able to programatically provide a username/password so it doesn't throw a 401. URL url = new URL(String.format("http://%s/manager/list", _host + ":8080")); HttpURLConnection connection = (HttpURLConnection)...
Hello, I am having problems downloading a binary file (video) in my app from the internet. In Quicktime, If I download it directly it works fine but through my app somehow it get's messed up (even though they look exactly the same in a text editor). Here is a example: URL u = new URL("http://www.path.to/a.mp4?video"); HttpURLCon...
I'm building an eclipse plugin that talks to a REST interface which uses Basic Authentication. When the authentication fails i would like to popup my plugin's settings dialog and retry. Normally I could use the static Authenticator.setDefault() to setup an authenticator for all HttpURLConnection's for this but since i am writing a plugi...
I'm trying to read a remote binary file (say, image) from internet like this: HttpURLConnection connection = (HttpURLConnection) myUrl.openConnection(); //myUrl - URL object pointing for some location if(connection.getResponseCode() == 200){ File temp = File.createTempFile("blabla", fileName); //fileName - string name of file Fi...
We are getting some unexpected results randomly from some servers when trying to open an InputStream from an HttpURLConnection. It seems like those servers would accept the connection and reply with a "stay-alive" header which will keep the Socket open but doesn't allow data to be sent back to the stream. That scenario makes an attempt ...
Wich are the main differences between the two? thanks ...
I want to know if it is possible to send PUT, DELETE request (practically) through java.net.HttpURLConnection to HTTP-based URL. I have read so many articles describing that how to send GET, POST, TRACE, OPTIONS request but still not finding any sample code which successfully perform PUT and DELETE request. Can any one give idea regardin...
I want to create an HTTPURLConnection to a PHP script and get the HTTP response returned by the script. Is there a way to do this in Perl? In short i want Perl equivalent to following: java.net.URL url = new java.net.URL(urlPath); java.net.HttpURLConnection conn = (java.net.HttpURLConnection) url.openConnection(...
(Solved - see comment below) I have a class that implements a multipart file upload. The code works on every java client I've tried it on except for Android, and it's the only HTTP request code in my Android app that doesn't play nice with my back end service. The connection responseCode is "-1" so something pretty nasty is going on h...
I need to consume a rest web service with java, passing the credentials of a domain user account. right now I'm doing it with classic asp set xmlHttp = server.createObject( "msxml2.serverxmlhttp" ) xmlHttp.open method, url, false, domain request.Credentials = new NetworkCredential(user, password, domain); request.Method = WebReques...
I have a use case where a servlet (that has reasonably high concurrent use) makes an outgoing URLConnection to retrieve some data REST style as part of its normal server-side processing logic. The connection is created and used each time the servlet is invoked as the URL is potentially different (but the domain is always the same). I ...
Hi, I am trying to send a GET via Android's HttpURLConnection (which is an org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection), and upon receiving the response, an IOException is thrown: in doRequestInternal(): "Received authentication challenge is null" What does this error mean, and what is causing this? I am w...
I am using Apache Commons HttpClient 3.1, and I found that HttpURLConnection from Sun drops the 100 Continues from the stream. So therefore I don't seem able to get the 100 Continue as they are apparently dropped by Sun's code. I am unable to move forward to HttpClient 4.0 as that would require many changes to already existing code so ...
I was having a problem where HttpURLConnection.getOutputStream() took 2-3 seconds. I set the connect timeout using HttpURLConnection.setConnectTimeout, expecting a SocketTimeoutException (wrapped by IOException) to be thrown from getOutputStream(), so I could retry the whole operation on another server. Instead, it just works now. Does ...
I seem to be running into a peculiar problem on Android 1.5 when a library I'm using (signpost 1.1-SNAPSHOT), makes two consecutive connections to a remote server. The second connection always fails with a HttpURLConnection.getResponseCode() of -1 Here's a testcase that exposes the problem: // BROKEN public void testDefaultOAuthConsum...
Hi, We have a requirement to download multiple documents, zip them and allow user to download zip file. The documents are downloaded sequentially and the number of documents can be upto 30 documents with varied sizes. We are planning to use URLConnection or any other open source urlconnection API if they have better features. What we wo...
Hi, We have URLs to a list of documents and we would like to check if a user has access to those documents. These documents require user login and password to access. Since the server requires NTLM authentication, we are using the JCIFS API to make a URL Connection to the document and checking the HTTP response code. If the response code...
Hi, We have URLs to a list of documents and we would like to check if a user is authorized to view those documents. Since the server requires NTLM authentication, we are using the JCIFS API to make a URL Connection to the document and checking the HTTP response code. If the response code is 401, then we are confirming that user does not ...