URLConnection.getInputStream () - Exception "Invalid HttpResponse" JRE - 1.7.0

The following code is to launch "java.io.IOException: invalid Http response" when running with a few URLs in JRE 7.0

LaunchUrl URL = new URL ("http:// < URL >");
URLConnection uConn = launchUrl.openConnection ();
uConn.getInputStream (); The exception is thrown here

at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown_Source)
at URLTest.main (URLTest.java:9)

The same code works fine using JRE 1.6.0_12.
The way java handles the request/response http changed in JDK 7.0?
I have the specific URL that doesn't work is present in GoAhead Webserver.

Hello.

My stack trace is displayed as follows for this question.

Exception in thread "main" java.io.IOException: Invalid Http response
     at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1328)
     at test.UrlCon.main(UrlCon.java:30)

The sun.net.www.protocol.http.HttpURLConnection class extends the java.net.HttpURLConnection class.
In the java.net.HttpURLConnection method getResponse(), the return value is defined as -1 if the HTTP response code cannot be determined.

In the version of Java 1.6 of class sun.net.www.protocol.http.HttpURLConnection, I have this answer / default error is not checked for specifically.
One response from the server protocol defined codes are looked for a special treatment, like the 200, 300 and 400 valid beaches.

In the version of Java for the sun.net.www.protocol.http.HttpURLConnection getInputStream() 1.7, a different implementation is present.
And as soon as the java.net.HttpURLConnection getResponse() method call is returned, the result is checked immediately the value-1.
In this instance of the class is coded
throw new IOException ("response Http invalid");
That's where you get it, as it is the only place in the deployed code 1.7 base I could find with an IOException and something like this exception message.

In summary, it appears that private response of your URL is incorrect?

You might want to watch the interaction server with "Wire Shark"?

You can find the source code java for 1.6 versions http://download.java.net/jdk6/source/ here

In any case, I hope this helps.

See you soon

Tags: Java

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