HDFS-5506. Use URLConnectionFactory in DelegationTokenFetcher. Contributed by Haohui Mai.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1542011 13f79535-47bb-0310-9956-ffa450edef68

hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt

@@ -491,6 +491,9 @@ Release 2.3.0 - UNRELEASED
 
     HDFS-4995. Make getContentSummary less expensive. (kihwal)
 
+    HDFS-5506. Use URLConnectionFactory in DelegationTokenFetcher. (Haohui Mai
+    via jing9)
+
   OPTIMIZATIONS
 
     HDFS-5239.  Allow FSNamesystem lock fairness to be configurable (daryn)

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/DelegationTokenFetcher.java

@@ -26,8 +26,8 @@ import java.io.InputStreamReader;
 import java.io.PrintStream;
 import java.net.HttpURLConnection;
 import java.net.InetSocketAddress;
+import java.net.URI;
 import java.net.URL;
-import java.net.URLConnection;
 import java.security.PrivilegedExceptionAction;
 import java.util.Collection;
 import java.util.Date;
@@ -47,11 +47,14 @@ import org.apache.hadoop.hdfs.server.namenode.CancelDelegationTokenServlet;
 import org.apache.hadoop.hdfs.server.namenode.GetDelegationTokenServlet;
 import org.apache.hadoop.hdfs.server.namenode.RenewDelegationTokenServlet;
 import org.apache.hadoop.hdfs.web.HftpFileSystem;
+import org.apache.hadoop.hdfs.web.HsftpFileSystem;
+import org.apache.hadoop.hdfs.web.URLConnectionFactory;
 import org.apache.hadoop.io.IOUtils;
 import org.apache.hadoop.net.NetUtils;
 import org.apache.hadoop.security.Credentials;
 import org.apache.hadoop.security.SecurityUtil;
 import org.apache.hadoop.security.UserGroupInformation;
+import org.apache.hadoop.security.authentication.client.AuthenticationException;
 import org.apache.hadoop.security.token.Token;
 import org.apache.hadoop.util.ExitUtil;
 import org.apache.hadoop.util.GenericOptionsParser;
@@ -142,11 +145,11 @@ public class DelegationTokenFetcher {
     // default to using the local file system
     FileSystem local = FileSystem.getLocal(conf);
     final Path tokenFile = new Path(local.getWorkingDirectory(), remaining[0]);
+    final URLConnectionFactory connectionFactory = URLConnectionFactory.DEFAULT_CONNECTION_FACTORY;
 
     // Login the current user
     UserGroupInformation.getCurrentUser().doAs(
         new PrivilegedExceptionAction<Object>() {
-          @SuppressWarnings("unchecked")
           @Override
           public Object run() throws Exception {
 
@@ -182,7 +185,8 @@ public class DelegationTokenFetcher {
             } else {
               // otherwise we are fetching
               if (webUrl != null) {
-                Credentials creds = getDTfromRemote(webUrl, renewer);
+                Credentials creds = getDTfromRemote(connectionFactory, new URI(webUrl),
+                    renewer);
                 creds.writeTokenStorageFile(tokenFile, conf);
                 for (Token<?> token : creds.getAllTokens()) {
                   if(LOG.isDebugEnabled()) {	
@@ -208,32 +212,31 @@ public class DelegationTokenFetcher {
         });
   }
   
-  static public Credentials getDTfromRemote(String nnAddr, 
-      String renewer) throws IOException {
+  static public Credentials getDTfromRemote(URLConnectionFactory factory,
+      URI nnUri, String renewer) throws IOException {
+    StringBuilder buf = new StringBuilder(nnUri.toString())
+        .append(GetDelegationTokenServlet.PATH_SPEC);
+    if (renewer != null) {
+      buf.append("?").append(GetDelegationTokenServlet.RENEWER).append("=")
+          .append(renewer);
+    }
+
+    HttpURLConnection conn = null;
     DataInputStream dis = null;
-    InetSocketAddress serviceAddr = NetUtils.createSocketAddr(nnAddr);
+    InetSocketAddress serviceAddr = NetUtils.createSocketAddr(nnUri
+        .getAuthority());
 
     try {
-      StringBuffer url = new StringBuffer();
-      if (renewer != null) {
-        url.append(nnAddr).append(GetDelegationTokenServlet.PATH_SPEC)
-           .append("?").append(GetDelegationTokenServlet.RENEWER).append("=")
-           .append(renewer);
-      } else {
-        url.append(nnAddr).append(GetDelegationTokenServlet.PATH_SPEC);
-      }
-      
       if(LOG.isDebugEnabled()) {
-        LOG.debug("Retrieving token from: " + url);
+        LOG.debug("Retrieving token from: " + buf);
       }
 
-      URL remoteURL = new URL(url.toString());
-      URLConnection connection = SecurityUtil.openSecureHttpConnection(remoteURL);
-      InputStream in = connection.getInputStream();
+      conn = run(factory, new URL(buf.toString()));
+      InputStream in = conn.getInputStream();
       Credentials ts = new Credentials();
       dis = new DataInputStream(in);
       ts.readFields(dis);
-      for(Token<?> token: ts.getAllTokens()) {
+      for (Token<?> token : ts.getAllTokens()) {
         token.setKind(HftpFileSystem.TOKEN_KIND);
         SecurityUtil.setTokenService(token, serviceAddr);
       }
@@ -241,53 +244,70 @@ public class DelegationTokenFetcher {
     } catch (Exception e) {
       throw new IOException("Unable to obtain remote token", e);
     } finally {
-      if(dis != null) dis.close();
+      IOUtils.cleanup(LOG, dis);
+      if (conn != null) {
+        conn.disconnect();
+      }
     }
   }
 
+  /**
+   * Cancel a Delegation Token.
+   * @param nnAddr the NameNode's address
+   * @param tok the token to cancel
+   * @throws IOException
+   * @throws AuthenticationException
+   */
+  static public void cancelDelegationToken(URLConnectionFactory factory,
+      URI nnAddr, Token<DelegationTokenIdentifier> tok) throws IOException,
+      AuthenticationException {
+    StringBuilder buf = new StringBuilder(nnAddr.toString())
+        .append(CancelDelegationTokenServlet.PATH_SPEC).append("?")
+        .append(CancelDelegationTokenServlet.TOKEN).append("=")
+        .append(tok.encodeToUrlString());
+    HttpURLConnection conn = run(factory, new URL(buf.toString()));
+    conn.disconnect();
+  }
+
   /**
    * Renew a Delegation Token.
    * @param nnAddr the NameNode's address
    * @param tok the token to renew
    * @return the Date that the token will expire next.
    * @throws IOException
+   * @throws AuthenticationException
    */
-  static public long renewDelegationToken(String nnAddr,
-      Token<DelegationTokenIdentifier> tok
-  ) throws IOException {
-    StringBuilder buf = new StringBuilder();
-    buf.append(nnAddr);
-    buf.append(RenewDelegationTokenServlet.PATH_SPEC);
-    buf.append("?");
-    buf.append(RenewDelegationTokenServlet.TOKEN);
-    buf.append("=");
-    buf.append(tok.encodeToUrlString());
-    BufferedReader in = null;
-    HttpURLConnection connection = null;
+  static public long renewDelegationToken(URLConnectionFactory factory,
+      URI nnAddr, Token<DelegationTokenIdentifier> tok) throws IOException,
+      AuthenticationException {
+    StringBuilder buf = new StringBuilder(nnAddr.toString())
+        .append(RenewDelegationTokenServlet.PATH_SPEC).append("?")
+        .append(RenewDelegationTokenServlet.TOKEN).append("=")
+        .append(tok.encodeToUrlString());
 
+    HttpURLConnection connection = null;
+    BufferedReader in = null;
     try {
-      URL url = new URL(buf.toString());
-      connection = (HttpURLConnection) SecurityUtil.openSecureHttpConnection(url);
-      if (connection.getResponseCode() != HttpURLConnection.HTTP_OK) {
-        throw new IOException("Error renewing token: " + 
-            connection.getResponseMessage());
-      }
-      in = new BufferedReader(
-          new InputStreamReader(connection.getInputStream(), Charsets.UTF_8));
+      connection = run(factory, new URL(buf.toString()));
+      in = new BufferedReader(new InputStreamReader(
+          connection.getInputStream(), Charsets.UTF_8));
       long result = Long.parseLong(in.readLine());
-      in.close();
       return result;
     } catch (IOException ie) {
       LOG.info("error in renew over HTTP", ie);
       IOException e = getExceptionFromResponse(connection);
 
-      IOUtils.cleanup(LOG, in);
-      if(e!=null) {
-        LOG.info("rethrowing exception from HTTP request: " + 
-                 e.getLocalizedMessage());
+      if (e != null) {
+        LOG.info("rethrowing exception from HTTP request: "
+            + e.getLocalizedMessage());
         throw e;
       }
       throw ie;
+    } finally {
+      IOUtils.cleanup(LOG, in);
+      if (connection != null) {
+        connection.disconnect();
+      }
     }
   }
 
@@ -339,43 +359,28 @@ public class DelegationTokenFetcher {
     return e;
   }
 
+  private static HttpURLConnection run(URLConnectionFactory factory, URL url)
+      throws IOException, AuthenticationException {
+    HttpURLConnection conn = null;
 
-  /**
-   * Cancel a Delegation Token.
-   * @param nnAddr the NameNode's address
-   * @param tok the token to cancel
-   * @throws IOException
-   */
-  static public void cancelDelegationToken(String nnAddr,
-      Token<DelegationTokenIdentifier> tok
-  ) throws IOException {
-    StringBuilder buf = new StringBuilder();
-    buf.append(nnAddr);
-    buf.append(CancelDelegationTokenServlet.PATH_SPEC);
-    buf.append("?");
-    buf.append(CancelDelegationTokenServlet.TOKEN);
-    buf.append("=");
-    buf.append(tok.encodeToUrlString());
-    BufferedReader in = null;
-    HttpURLConnection connection=null;
     try {
-      URL url = new URL(buf.toString());
-      connection = (HttpURLConnection) SecurityUtil.openSecureHttpConnection(url);
-      if (connection.getResponseCode() != HttpURLConnection.HTTP_OK) {
-        throw new IOException("Error cancelling token: " + 
-            connection.getResponseMessage());
+      conn = (HttpURLConnection) factory.openConnection(url, true);
+      if (conn.getResponseCode() != HttpURLConnection.HTTP_OK) {
+        String msg = conn.getResponseMessage();
+
+        throw new IOException("Error when dealing remote token: " + msg);
       }
     } catch (IOException ie) {
-      LOG.info("error in cancel over HTTP", ie);
-      IOException e = getExceptionFromResponse(connection);
+      LOG.info("Error when dealing remote token:", ie);
+      IOException e = getExceptionFromResponse(conn);
 
-      IOUtils.cleanup(LOG, in);
-      if(e!=null) {
-        LOG.info("rethrowing exception from HTTP request: " + 
-                 e.getLocalizedMessage());
+      if (e != null) {
+        LOG.info("rethrowing exception from HTTP request: "
+            + e.getLocalizedMessage());
         throw e;
       }
       throw ie;
     }
+    return conn;
   }
 }

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/web/HftpFileSystem.java

@@ -57,6 +57,7 @@ import org.apache.hadoop.net.NetUtils;
 import org.apache.hadoop.security.Credentials;
 import org.apache.hadoop.security.SecurityUtil;
 import org.apache.hadoop.security.UserGroupInformation;
+import org.apache.hadoop.security.authentication.client.AuthenticationException;
 import org.apache.hadoop.security.token.Token;
 import org.apache.hadoop.security.token.TokenIdentifier;
 import org.apache.hadoop.util.Progressable;
@@ -231,7 +232,7 @@ public class HftpFileSystem extends FileSystem
           final String nnHttpUrl = nnUri.toString();
           Credentials c;
           try {
-            c = DelegationTokenFetcher.getDTfromRemote(nnHttpUrl, renewer);
+            c = DelegationTokenFetcher.getDTfromRemote(connectionFactory, nnUri, renewer);
           } catch (IOException e) {
             if (e.getCause() instanceof ConnectException) {
               LOG.warn("Couldn't connect to " + nnHttpUrl +
@@ -666,10 +667,13 @@ public class HftpFileSystem extends FileSystem
     // update the kerberos credentials, if they are coming from a keytab
     UserGroupInformation.getLoginUser().checkTGTAndReloginFromKeytab();
     InetSocketAddress serviceAddr = SecurityUtil.getTokenServiceAddr(token);
-    return
-      DelegationTokenFetcher.renewDelegationToken
-      (DFSUtil.createUri(getUnderlyingProtocol(), serviceAddr).toString(),
-       (Token<DelegationTokenIdentifier>) token);
+    try {
+      return DelegationTokenFetcher.renewDelegationToken(connectionFactory,
+          DFSUtil.createUri(getUnderlyingProtocol(), serviceAddr),
+          (Token<DelegationTokenIdentifier>) token);
+    } catch (AuthenticationException e) {
+      throw new IOException(e);
+    }
   }
 
   @SuppressWarnings("unchecked")
@@ -678,8 +682,12 @@ public class HftpFileSystem extends FileSystem
     // update the kerberos credentials, if they are coming from a keytab
     UserGroupInformation.getLoginUser().checkTGTAndReloginFromKeytab();
     InetSocketAddress serviceAddr = SecurityUtil.getTokenServiceAddr(token);
-    DelegationTokenFetcher.cancelDelegationToken
-      (DFSUtil.createUri(getUnderlyingProtocol(), serviceAddr).toString(),
-       (Token<DelegationTokenIdentifier>) token);
+    try {
+      DelegationTokenFetcher.cancelDelegationToken(connectionFactory, DFSUtil
+          .createUri(getUnderlyingProtocol(), serviceAddr),
+          (Token<DelegationTokenIdentifier>) token);
+    } catch (AuthenticationException e) {
+      throw new IOException(e);
+    }
   }
 }

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/web/URLConnectionFactory.java

@@ -27,7 +27,7 @@ import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
-import org.apache.hadoop.hdfs.web.resources.HttpOpParam;
+import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.security.authentication.client.AuthenticatedURL;
 import org.apache.hadoop.security.authentication.client.AuthenticationException;
@@ -77,24 +77,28 @@ public class URLConnectionFactory {
    * @throws IOException
    */
   public URLConnection openConnection(URL url) throws IOException {
-    URLConnection connection = url.openConnection();
-    if (connection instanceof HttpURLConnection) {
-      connConfigurator.configure((HttpURLConnection) connection);
+    try {
+      return openConnection(url, false);
+    } catch (AuthenticationException e) {
+      // Unreachable
+      return null;
     }
-    return connection;
   }
 
   /**
    * Opens a url with read and connect timeouts
    *
-   * @param url URL to open
+   * @param url
+   *          URL to open
+   * @param isSpnego
+   *          whether the url should be authenticated via SPNEGO
    * @return URLConnection
    * @throws IOException
    * @throws AuthenticationException
    */
-  public URLConnection openConnection(HttpOpParam.Op op, URL url)
+  public URLConnection openConnection(URL url, boolean isSpnego)
       throws IOException, AuthenticationException {
-    if (op.getRequireAuth()) {
+    if (isSpnego) {
       if (LOG.isDebugEnabled()) {
         LOG.debug("open AuthenticatedURL connection" + url);
       }
@@ -106,7 +110,11 @@ public class URLConnectionFactory {
       if (LOG.isDebugEnabled()) {
         LOG.debug("open URL connection");
       }
-      return openConnection(url);
+      URLConnection connection = url.openConnection();
+      if (connection instanceof HttpURLConnection) {
+        connConfigurator.configure((HttpURLConnection) connection);
+      }
+      return connection;
     }
   }
 

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/web/WebHdfsFileSystem.java

@@ -491,7 +491,8 @@ public class WebHdfsFileSystem extends FileSystem
         throws IOException {
       final HttpURLConnection conn;
       try {
-        conn = (HttpURLConnection) connectionFactory.openConnection(op, url);
+        conn = (HttpURLConnection) connectionFactory.openConnection(url,
+            op.getRequireAuth());
       } catch (AuthenticationException e) {
         throw new IOException(e);
       }

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/tools/TestDelegationTokenRemoteFetcher.java

@@ -26,6 +26,8 @@ import static org.junit.Assert.fail;
 
 import java.io.IOException;
 import java.net.InetSocketAddress;
+import java.net.URI;
+import java.net.URISyntaxException;
 import java.nio.charset.Charset;
 import java.util.Iterator;
 import java.util.Map;
@@ -37,10 +39,12 @@ import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenIdentifier;
 import org.apache.hadoop.hdfs.tools.DelegationTokenFetcher;
 import org.apache.hadoop.hdfs.web.HftpFileSystem;
+import org.apache.hadoop.hdfs.web.URLConnectionFactory;
 import org.apache.hadoop.io.DataOutputBuffer;
 import org.apache.hadoop.io.Text;
 import org.apache.hadoop.net.NetUtils;
 import org.apache.hadoop.security.Credentials;
+import org.apache.hadoop.security.authentication.client.AuthenticationException;
 import org.apache.hadoop.security.token.Token;
 import org.apache.log4j.Logger;
 import org.jboss.netty.bootstrap.ServerBootstrap;
@@ -59,6 +63,7 @@ import org.jboss.netty.channel.socket.nio.NioServerSocketChannelFactory;
 import org.jboss.netty.handler.codec.http.DefaultHttpResponse;
 import org.jboss.netty.handler.codec.http.HttpChunkAggregator;
 import org.jboss.netty.handler.codec.http.HttpHeaders;
+import org.jboss.netty.handler.codec.http.HttpMethod;
 import org.jboss.netty.handler.codec.http.HttpRequest;
 import org.jboss.netty.handler.codec.http.HttpRequestDecoder;
 import org.jboss.netty.handler.codec.http.HttpResponse;
@@ -78,9 +83,10 @@ public class TestDelegationTokenRemoteFetcher {
 
   private static final String EXP_DATE = "124123512361236";
   private static final String tokenFile = "http.file.dta";
+  private static final URLConnectionFactory connectionFactory = URLConnectionFactory.DEFAULT_CONNECTION_FACTORY;
 
   private int httpPort;
-  private String serviceUrl;
+  private URI serviceUrl;
   private FileSystem fileSys;
   private Configuration conf;
   private ServerBootstrap bootstrap;
@@ -92,7 +98,7 @@ public class TestDelegationTokenRemoteFetcher {
     conf = new Configuration();
     fileSys = FileSystem.getLocal(conf);
     httpPort = NetUtils.getFreeSocketPort();
-    serviceUrl = "http://localhost:" + httpPort;
+    serviceUrl = new URI("http://localhost:" + httpPort);
     testToken = createToken(serviceUrl);
   }
 
@@ -121,9 +127,9 @@ public class TestDelegationTokenRemoteFetcher {
    * try to fetch token without http server with IOException
    */
   @Test
-  public void testTokenRenewFail() {
+  public void testTokenRenewFail() throws AuthenticationException {
     try {
-      DelegationTokenFetcher.renewDelegationToken(serviceUrl, testToken);
+      DelegationTokenFetcher.renewDelegationToken(connectionFactory, serviceUrl, testToken);
       fail("Token fetcher shouldn't be able to renew tokens in absense of NN");
     } catch (IOException ex) {
     } 
@@ -133,9 +139,9 @@ public class TestDelegationTokenRemoteFetcher {
    * try cancel token without http server with IOException
    */
   @Test
-  public void expectedTokenCancelFail() {
+  public void expectedTokenCancelFail() throws AuthenticationException {
     try {
-      DelegationTokenFetcher.cancelDelegationToken(serviceUrl, testToken);
+      DelegationTokenFetcher.cancelDelegationToken(connectionFactory, serviceUrl, testToken);
       fail("Token fetcher shouldn't be able to cancel tokens in absense of NN");
     } catch (IOException ex) {
     } 
@@ -145,11 +151,12 @@ public class TestDelegationTokenRemoteFetcher {
    * try fetch token and get http response with error
    */
   @Test  
-  public void expectedTokenRenewErrorHttpResponse() {
+  public void expectedTokenRenewErrorHttpResponse()
+      throws AuthenticationException, URISyntaxException {
     bootstrap = startHttpServer(httpPort, testToken, serviceUrl);
     try {
-      DelegationTokenFetcher.renewDelegationToken(serviceUrl + "/exception", 
-          createToken(serviceUrl));
+      DelegationTokenFetcher.renewDelegationToken(connectionFactory, new URI(
+          serviceUrl.toString() + "/exception"), createToken(serviceUrl));
       fail("Token fetcher shouldn't be able to renew tokens using an invalid"
           + " NN URL");
     } catch (IOException ex) {
@@ -159,13 +166,14 @@ public class TestDelegationTokenRemoteFetcher {
   }
   
   /**
-   *   
    *
    */
   @Test
-  public void testCancelTokenFromHttp() throws IOException {
+  public void testCancelTokenFromHttp() throws IOException,
+      AuthenticationException {
     bootstrap = startHttpServer(httpPort, testToken, serviceUrl);
-    DelegationTokenFetcher.cancelDelegationToken(serviceUrl, testToken);
+    DelegationTokenFetcher.cancelDelegationToken(connectionFactory, serviceUrl,
+        testToken);
     if (assertionError != null)
       throw assertionError;
   }
@@ -174,11 +182,12 @@ public class TestDelegationTokenRemoteFetcher {
    * Call renew token using http server return new expiration time
    */
   @Test
-  public void testRenewTokenFromHttp() throws IOException {
+  public void testRenewTokenFromHttp() throws IOException,
+      NumberFormatException, AuthenticationException {
     bootstrap = startHttpServer(httpPort, testToken, serviceUrl);
     assertTrue("testRenewTokenFromHttp error",
         Long.valueOf(EXP_DATE) == DelegationTokenFetcher.renewDelegationToken(
-            serviceUrl, testToken));
+            connectionFactory, serviceUrl, testToken));
     if (assertionError != null)
       throw assertionError;
   }
@@ -204,11 +213,11 @@ public class TestDelegationTokenRemoteFetcher {
       throw assertionError;
   }
   
-  private static Token<DelegationTokenIdentifier> createToken(String serviceUri) {
+  private static Token<DelegationTokenIdentifier> createToken(URI serviceUri) {
     byte[] pw = "hadoop".getBytes();
     byte[] ident = new DelegationTokenIdentifier(new Text("owner"), new Text(
         "renewer"), new Text("realuser")).getBytes();
-    Text service = new Text(serviceUri);
+    Text service = new Text(serviceUri.toString());
     return new Token<DelegationTokenIdentifier>(ident, pw,
         HftpFileSystem.TOKEN_KIND, service);
   }
@@ -301,8 +310,15 @@ public class TestDelegationTokenRemoteFetcher {
     public void messageReceived(ChannelHandlerContext ctx, final MessageEvent e)
         throws Exception {
       HttpRequest request = (HttpRequest) e.getMessage();
-      if (request.getMethod() != GET) {
-        return;
+
+      if (request.getMethod() == HttpMethod.OPTIONS) {
+        // Mimic SPNEGO authentication
+        HttpResponse response = new DefaultHttpResponse(HTTP_1_1,
+            HttpResponseStatus.OK);
+        response.addHeader("Set-Cookie", "hadoop-auth=1234");
+        e.getChannel().write(response).addListener(ChannelFutureListener.CLOSE);
+      } else if (request.getMethod() != GET) {
+        e.getChannel().close();
       }
       UnmodifiableIterator<Map.Entry<String, Handler>> iter = routes.entrySet()
           .iterator();
@@ -338,7 +354,7 @@ public class TestDelegationTokenRemoteFetcher {
   }
 
   private ServerBootstrap startHttpServer(int port,
-      final Token<DelegationTokenIdentifier> token, final String url) {
+      final Token<DelegationTokenIdentifier> token, final URI url) {
     ServerBootstrap bootstrap = new ServerBootstrap(
         new NioServerSocketChannelFactory(Executors.newCachedThreadPool(),
             Executors.newCachedThreadPool()));
@@ -348,7 +364,7 @@ public class TestDelegationTokenRemoteFetcher {
       public ChannelPipeline getPipeline() throws Exception {
         return Channels.pipeline(new HttpRequestDecoder(),
             new HttpChunkAggregator(65536), new HttpResponseEncoder(),
-            new CredentialsLogicHandler(token, url));
+            new CredentialsLogicHandler(token, url.toString()));
       }
     });
     bootstrap.bind(new InetSocketAddress("localhost", port));