why does the call to java.net.URLConnection.getHeaderField(0) result in a StackOverflowError?
httprequest, java, stack-overflow, urlconnection
Solution
This looks like a known bug in Java (JDK-6670868):
There is an issue in the tunneling/Http retry code whereby a proxy requiring authentication, if it gives a bad response after the initial 407, may cause the HTTPClient to perform recursive calls to parseHTTP until StackOverFlow
The bug report lists it as fixed in Java 8b01.
Problem
For some reason, when the code makes a request using an HTTP proxy, the call to "getHeaderField(0)", which I understand is supposed to return a String that represents the server's response code, results in a StackOverflowError. There are no recursive calls in my code. It's essentially just this: ``` java.net.Authenticator.setDefault(new java.net.Authenticator() { @Override protected java.net.PasswordAuthentication getPasswordAuthentication() { return new java.net.PasswordAuthentication(<user>, <pass>.toCharArray()); } }); java.net.Proxy proxy = new java.net.Proxy(Proxy.Type.HTTP, new InetSocketAddress(<host>, <port>)); java.net.URLConnection conn = new java.net.URL("http://www.yahoo.com").openConnection(proxy); System.out.println(conn.getHeaderField(0));//StackOverFlowError ``` The printed stack trace is the following: ``` java.lang.StackOverflowError at java.net.SocketImpl.<init>(SocketImpl.java:27) at java.net.PlainSocketImpl.<init>(PlainSocketImpl.java:95) at java.net.Socket.<init>(Socket.java:126) at sun.net.NetworkClient.doConnect(NetworkClient.java:149) at sun.net.www.http.HttpClient.openServer(HttpClient.java:395) at sun.net.www.http.HttpClient$4.run(HttpClient.java:458) at java.security.AccessController.doPrivileged(Native Method) at sun.net.www.http.HttpClient.privilegedOpenServer(HttpClient.java:440) at sun.net.www.http.HttpClient.openServer(HttpClient.java:521) at sun.net.www.protocol.https.HttpsClient.<init>(HttpsClient.java:272) at sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:329) at sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:310) at sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:302) at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.proxiedConnect(AbstractDelegateHttpsURLConnection.java:130) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1586) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:656) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) .... at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640) at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1595) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:770) ```