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Unable to tunnel through proxy. Proxy returns "HTTP/1.1 403 Forbidden

Hi I am using HttpsURLConnection to connect external service it works for few transaction but after some time it fails and get below error
Unable to tunnel through proxy. Proxy returns "HTTP/1.1 403 Forbidden
I print connection.getErrorStream() it gives null
Please find below code it is failing at os = connection.getOutputStream();
connection = restConfiguration.getSSLConnection(url, connection);
connection.setDoOutput(true);
connection.setRequestMethod("POST");
connection.setRequestProperty("Content-Type", "application/json; charset=UTF-8");
connection.setRequestProperty("Accept", "application/json; charset=UTF-8");
connection.setRequestProperty("Authorization", "Bearer " + authorization);
os = connection.getOutputStream();
os.write(signOrderRequest.toJson().getBytes("UTF-8"));
os.flush();
Any suggestions, ideas?

We were facing the same problem, and we just found out that calling
URL.openConnection()
without a proxy parameter doesn't mean that no proxy will be used, but rather that the system proxy will be.
That's why it may seem ok at first, but then fail after a while (when the system proxy is set by another user/process).
If you absolutely don't want any proxy to be used, you have to use :
URL.openConnection(Proxy.NO_PROXY)
Max

A proxy ignores the authentication header only for httpS request

I want to send 2 kinds of request via proxy: http and https. Here's how I'm doing an HTTP request:
HttpURLConnection conn = (HttpURLConnection) url.openConnection(proxy);
and HTTPS:
HttpsURLConnection conn = (HttpsURLConnection) url.openConnection(proxy);
The rest of the code is identical:
//..................
Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress("ip", 1234));
//..................
conn.setRequestProperty("Proxy-Connection", "Keep-Alive");
conn.setRequestProperty("Proxy-Authorization", auth);
conn.setDoInput(true);
System.out.println("Response Code : " + conn.getResponseCode());
System.out.println("\n");
In case of HTTP it returns 200 and the body of the response which means everything is working fine. However, for HTTPS requests it returns:
Unable to tunnel through proxy. Proxy returns "HTTP/1.0 407 Proxy Authentication Required
How come?
I don't consider using the class Authenticator or System.setProperty. I want to figure out why my code isn't working correctly for https and is for http.

You use Basic authentication schema.
According Oracle update # 8u111
In some environments, certain authentication schemes may be
undesirable when proxying HTTPS. Accordingly, the Basic authentication
scheme has been deactivated, by default, in the Oracle Java Runtime,
by adding Basic to the jdk.http.auth.tunneling.disabledSchemes
networking property.
Thus you need clear list of disabledSchemes by
- or invoke at main static method System.setProperty("jdk.http.auth.tunneling.disabledSchemes", "");
- or add JVM parameter -Djdk.http.auth.tunneling.disabledSchemes=
- or use Apache Common HttpClient

send http request from IIS to GCM using java

I am trying to send Json message from my [java application server] to [GCM]:
the java server app located on IIS server (Windows server 2008 R2).
here is my function:
public static String post(String apiKey, String json){
try{
URL url = new URL("https://android.googleapis.com/gcm/send");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("POST");
conn.setRequestProperty("Content-Type:", "application/json");
conn.setRequestProperty("Authorization:", "key="+apiKey); // apiKey is valid browser apiKey.
conn.setDoOutput(true);
DataOutputStream wr = new DataOutputStream(conn.getOutputStream());
wr.writeUTF(json);
wr.flush();
wr.close();
/*I've deleted the respond check from the question*/
}
but I fail to send!, and does not get any message or exception.
I think that the server itself doesnt let me send http requests!
is this true? how to solve?

I recommend using the Sender and Message objects instead. The sample GCM server code uses those. Sample server code can be seen here.
If you really insist on handling the connection yourself, you can look at the underlying HttpURLConnection implementation of the Sender object here.
It does appear that there are certain differences between the Sender code and your request properties. Hope this helps.

HTTP Post in C2DM giving SocketTimeoutException

I made an app. for Android which uses the C2DM service from Google. I
made a server simulator from some tutorials and it works fine. My
problem is, I tried to build a Java Servlet. From the Android device
it receives fine the message and saves the Registration ID, but when I
try to send a https POST request to the Google C2DM Server it always
gets a SocketTimeoutException : Timeout while fetching:
https://android.clients.google.com/c2dm/send.
I don't get why this is happening when the same works on the Android
device. Here is the code:
//The AuthToken from Google Client Login
String auth_key = TOKEN;
StringBuilder postDataBuilder = new StringBuilder();
//some parameters to pass, I've checked and it's correct, it's working
//with Fiddler
postDataBuilder.append(PARAM_REGISTRATION_ID).append("=").append(REGISTRATION_ID);
postDataBuilder.append("&").append(PARAM_COLLAPSE_KEY).append("=").append("0");
postDataBuilder.append("&").append("data.payload").append("=").append(URLEncoder.encode(message, UTF8));
byte[] postData = postDataBuilder.toString().getBytes(UTF8);
URL url = new URL("https://android.clients.google.com/c2dm/send");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setDoOutput(true);
conn.setUseCaches(false);
conn.setRequestMethod("POST");
conn.setRequestProperty("Content-Type","application/x-www-form-urlencoded;charset=UTF-8");
conn.setRequestProperty("Content-Length",Integer.toString(postData.length));
conn.setRequestProperty("Authorization", "GoogleLogin auth="+auth_key);
OutputStream out = conn.getOutputStream();
out.write(postData);
out.close();
int responseCode = conn.getResponseCode();
//here comes the error processing, but I can't reach it, because of
//the exception.
if (responseCode == 401 || responseCode == 403) {
//....
}
Thanks for your help :).

The first obvious thing to check is - if you have thought of this I apologise - are you behind a proxy server e.g. a company firewall? If so a timeout is exactly the symptom I'd expect with the above code. (This catches me out all the time!)
With the latter half of your code (from the HttpURLConnection declaration on), unmodified, I see a timeout; on my system (behind a company firewall), with two changes I get a 200 OK back:
addition of a proxy object passed to the HttpUrlConnection factory as follows:
Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress("...", 8080));
HttpURLConnection conn = (HttpURLConnection) url.openConnection(proxy);
accepting the C2DM server's certificate that wasn't trusted by my JVM. For test purposes I overrode the default hostname verifier and TrustManager as described in Trusting all certificates using HttpClient over HTTPS . For production you should look at a more secure solution.
Another thing I spotted; it doesn't seem to matter but http://code.google.com/android/c2dm/index.html#push says to post to https://android.apis.google.com/c2dm/send, not android.clients.google.com - just something to be aware of that might break in future.

I faced same problem and
I had tried :
URL url = new URL("http://android.apis.google.com/c2dm/send");
instead of :
URL url = new URL("https://android.apis.google.com/c2dm/send");
it worked for me.

How to use an HTTP proxy in java

I am writing a code that connects to websites and checks some code, like a crawler. But I need to connect trough a proxy and change the IP address (so it doesn't show the client's IP in the server logs).
How can this be done through java?

You can use the java system properties to set up a proxy or pass it as command line options.
You can find some details and samples here.
Ex: Before opening the connection
System.setProperty("http.proxyHost", "myProxyServer.com");
System.setProperty("http.proxyPort", "80");
Or you can use the default network proxies configured in the sytem
System.setProperty("java.net.useSystemProxies", "true");
Since Java 1.5 you can create a instance of proxy and pass it to the openConnection() method.
Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress("123.0.0.1", 8080));
URL url = new URL("http://www.yahoo.com");
HttpURLConnection uc = (HttpURLConnection)url.openConnection(proxy);
uc.connect();
Or as lisak suggested, you can use some 3rd party libraries which supports your need better.

Or you can also use HttpClient which would suit your needs better. Check out the documentation, it's brief and very informative.
DefaultHttpClient httpclient = new DefaultHttpClient();
HttpHost proxy = new HttpHost("someproxy", 8080);
httpclient.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY, proxy);

Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress("123.0.0.1", 8080));
URL url = new URL("http://www.yahoo.com");
HttpURLConnection uc = (HttpURLConnection)url.openConnection(proxy);
uc.connect();
This worked for me. I was able to use the proxy for the specific connection or transfer. Earlier we were using System.setProperty which used to set it at system level and all the requests internal/external started using the same proxy.
Also Proxy.Type.HTTP works for both http and https