I am trying to set Cookies and request headers via URL connection. Here is the client side code
UUID = request.getHeader("UUID");
conn.addRequestProperty("Cookie", iPlanetDirectoryPro);
conn = url.openConnection();
conn.setDoOutput(true);
objOstr = new OutputStreamWriter(conn.getOutputStream());
objOstr.write(res);
One server side i am trying a retrieve the cookie using "iPlanetDirectoryPro" as the cookie name. But i am getting null. What is the mistake i am doing here?
If i set as conn.addRequestProperty("iPlanetDirectoryPro", iPlanetDirectoryPro); then what is the difference between cookie-and-string-in-request-header https://stackoverflow.com/questions/21226475/difference-between-cookie-and-string-in-request-header
Try using:
conn.getRequestProperty("Cookies");
See the doc.
Related
I'm developing in java an application which verifies if one site is online.
I get the http response by:
URL url = new URL("http://www.example.com");
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
But when I access the URL it is redirecting and the HTTP response is always 301. I want to get the new URL that the site was redirected. Is it possible?
You can access to the header using this :
String redirectUrl = connection.getHeaderField("Location");
The target of the redirection is in the HTTP Header of the response, look for the "Location" header.
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.
I used Jodd Http library to connect with the proxy:
ProxyInfo proxyInfoObj = new ProxyInfo(ProxyType.HTTP, "10.30.56.70", 8080, "", "");
SocketHttpConnectionProvider provider = new SocketHttpConnectionProvider();
provider.useProxy(proxyInfoObj);
HttpRequest request = HttpRequest.get(url);
request.method("GET");
request.charset("UTF-8");
HttpResponse response = request.open(provider).send();
result = response.bodyText();
But i got this error:
jodd.http.HttpException: HTTP: Invalid code
at jodd.http.net.HTTPProxySocketFactory.createHttpProxySocket(HTTPProxySocketFactory.java:113)
at jodd.http.net.HTTPProxySocketFactory.createSocket(HTTPProxySocketFactory.java:32)
If I use SOCKS4 type, the program hang and don't return anything. Can anyone help me?
But I can connect via proxy using following code:
Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress("10.30.56.70", 8080));
HttpURLConnection connection =(HttpURLConnection)new URL("http://tvl.csmtalk.vn/api/sms/receive").openConnection(proxy);
connection.setDoOutput(true);
connection.setDoInput(true);
connection.setRequestProperty("Content-type", "text/xml");
connection.setRequestProperty("Accept", "text/xml, application/xml");
connection.setRequestMethod("GET");
connection.connect();
For me both codes hangs. When I try Jodd, it hangs because it can not open proxy socket to 10.30.56.70:8080. When I try to
telnet 10.30.56.70 8080
from command line it hangs as well. It looks like proxy is not responding. (You can contact Jodd support if you need more details, or if you want to send some private data regarding the connectivity.)
btw, you don't need to:
request.method("GET");
request.charset("UTF-8");
as method is already set to GET by method get() and charset is not used for requests, but response (to set one if not set by server).
I have a MVC application and I'd like that each request must handle its own session.
My request:
CookieHandler.setDefault(new CookieManager(null, CookiePolicy.ACCEPT_ALL));
URL url = new URL("http://google.com");
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
As we know CookieHandler allow just one session per application. I'd like that each request creates and use its own session.
Does anybody know how to do it?
Thanks
you will have to use Proxy while opening a connection...
the use of proxy provides always a new IP address for the server so you can be sure that the server maintains different session for each request...
your code will be something like following...
CookieHandler.setDefault(new CookieManager(null, CookiePolicy.ACCEPT_ALL));
URL url = new URL("http://google.com");
HttpURLConnection connection = (HttpURLConnection) url.openConnection(new Proxy("some_proxy"));
I need to get data from a Web page and for that i need to keep session alive(i think so),So when i enter username password through browser to website ,i run my code,which takes cookies from my browser and sends post request with cookies attached to the page who's data i want to get
You can use HttpURLConnection class provided by java. Do somethink like this:-
URL url = new URL("You URL");
HttpURLConnection hCon = (HttpURLConnection) url.openConnection();
hCon.setDoOutput(true);
hCon.setRequestMethod("POST");
hcon.setRequestProperty("Cookie", myCookie);
OutputStreamWriter out = new OutputStreamWriter(
hpCon.getOutputStream());
out.close()
and than try to read the response.
You can also give a look into Apache HttpClient