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From git-site-r...@apache.org
Subject [32/51] [partial] hbase-site git commit: Published site at .
Date Sun, 03 Dec 2017 15:18:42 GMT
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/c54c242b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/BlockingRpcConnection.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/ipc/BlockingRpcConnection.html b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/BlockingRpcConnection.html
index 81f352c..0782ea7 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/ipc/BlockingRpcConnection.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/BlockingRpcConnection.html
@@ -51,39 +51,39 @@
 <span class="sourceLineNo">043</span>import java.util.concurrent.ConcurrentHashMap;<a name="line.43"></a>
 <span class="sourceLineNo">044</span>import java.util.concurrent.ConcurrentMap;<a name="line.44"></a>
 <span class="sourceLineNo">045</span>import java.util.concurrent.ThreadLocalRandom;<a name="line.45"></a>
-<span class="sourceLineNo">046</span><a name="line.46"></a>
-<span class="sourceLineNo">047</span>import javax.security.sasl.SaslException;<a name="line.47"></a>
-<span class="sourceLineNo">048</span><a name="line.48"></a>
-<span class="sourceLineNo">049</span>import org.apache.commons.logging.Log;<a name="line.49"></a>
-<span class="sourceLineNo">050</span>import org.apache.commons.logging.LogFactory;<a name="line.50"></a>
-<span class="sourceLineNo">051</span>import org.apache.hadoop.conf.Configuration;<a name="line.51"></a>
-<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.CellScanner;<a name="line.52"></a>
-<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.DoNotRetryIOException;<a name="line.53"></a>
-<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.exceptions.ConnectionClosingException;<a name="line.54"></a>
-<span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.io.ByteArrayOutputStream;<a name="line.55"></a>
-<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.ipc.HBaseRpcController.CancellationCallback;<a name="line.56"></a>
-<span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.security.HBaseSaslRpcClient;<a name="line.57"></a>
-<span class="sourceLineNo">058</span>import org.apache.hadoop.hbase.security.SaslUtil;<a name="line.58"></a>
-<span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.security.SaslUtil.QualityOfProtection;<a name="line.59"></a>
-<span class="sourceLineNo">060</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.Message;<a name="line.60"></a>
-<span class="sourceLineNo">061</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.Message.Builder;<a name="line.61"></a>
-<span class="sourceLineNo">062</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.RpcCallback;<a name="line.62"></a>
-<span class="sourceLineNo">063</span>import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<a name="line.63"></a>
-<span class="sourceLineNo">064</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos;<a name="line.64"></a>
-<span class="sourceLineNo">065</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos.CellBlockMeta;<a name="line.65"></a>
-<span class="sourceLineNo">066</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos.ConnectionHeader;<a name="line.66"></a>
-<span class="sourceLineNo">067</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos.ExceptionResponse;<a name="line.67"></a>
-<span class="sourceLineNo">068</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos.RequestHeader;<a name="line.68"></a>
-<span class="sourceLineNo">069</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos.ResponseHeader;<a name="line.69"></a>
-<span class="sourceLineNo">070</span>import org.apache.hadoop.hbase.trace.TraceUtil;<a name="line.70"></a>
-<span class="sourceLineNo">071</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.71"></a>
-<span class="sourceLineNo">072</span>import org.apache.hadoop.hbase.util.ExceptionUtil;<a name="line.72"></a>
-<span class="sourceLineNo">073</span>import org.apache.hadoop.io.IOUtils;<a name="line.73"></a>
-<span class="sourceLineNo">074</span>import org.apache.hadoop.ipc.RemoteException;<a name="line.74"></a>
-<span class="sourceLineNo">075</span>import org.apache.hadoop.net.NetUtils;<a name="line.75"></a>
-<span class="sourceLineNo">076</span>import org.apache.hadoop.security.UserGroupInformation;<a name="line.76"></a>
-<span class="sourceLineNo">077</span>import org.apache.htrace.core.TraceScope;<a name="line.77"></a>
-<span class="sourceLineNo">078</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.78"></a>
+<span class="sourceLineNo">046</span>import javax.security.sasl.SaslException;<a name="line.46"></a>
+<span class="sourceLineNo">047</span>import org.apache.commons.logging.Log;<a name="line.47"></a>
+<span class="sourceLineNo">048</span>import org.apache.commons.logging.LogFactory;<a name="line.48"></a>
+<span class="sourceLineNo">049</span>import org.apache.hadoop.conf.Configuration;<a name="line.49"></a>
+<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.CellScanner;<a name="line.50"></a>
+<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.DoNotRetryIOException;<a name="line.51"></a>
+<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.exceptions.ConnectionClosingException;<a name="line.52"></a>
+<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.io.ByteArrayOutputStream;<a name="line.53"></a>
+<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.ipc.HBaseRpcController.CancellationCallback;<a name="line.54"></a>
+<span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.security.HBaseSaslRpcClient;<a name="line.55"></a>
+<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.security.SaslUtil;<a name="line.56"></a>
+<span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.security.SaslUtil.QualityOfProtection;<a name="line.57"></a>
+<span class="sourceLineNo">058</span>import org.apache.hadoop.hbase.trace.TraceUtil;<a name="line.58"></a>
+<span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.59"></a>
+<span class="sourceLineNo">060</span>import org.apache.hadoop.hbase.util.ExceptionUtil;<a name="line.60"></a>
+<span class="sourceLineNo">061</span>import org.apache.hadoop.io.IOUtils;<a name="line.61"></a>
+<span class="sourceLineNo">062</span>import org.apache.hadoop.ipc.RemoteException;<a name="line.62"></a>
+<span class="sourceLineNo">063</span>import org.apache.hadoop.net.NetUtils;<a name="line.63"></a>
+<span class="sourceLineNo">064</span>import org.apache.hadoop.security.UserGroupInformation;<a name="line.64"></a>
+<span class="sourceLineNo">065</span>import org.apache.hadoop.util.StringUtils;<a name="line.65"></a>
+<span class="sourceLineNo">066</span>import org.apache.htrace.core.TraceScope;<a name="line.66"></a>
+<span class="sourceLineNo">067</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.67"></a>
+<span class="sourceLineNo">068</span><a name="line.68"></a>
+<span class="sourceLineNo">069</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.Message;<a name="line.69"></a>
+<span class="sourceLineNo">070</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.Message.Builder;<a name="line.70"></a>
+<span class="sourceLineNo">071</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.RpcCallback;<a name="line.71"></a>
+<span class="sourceLineNo">072</span>import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<a name="line.72"></a>
+<span class="sourceLineNo">073</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos;<a name="line.73"></a>
+<span class="sourceLineNo">074</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos.CellBlockMeta;<a name="line.74"></a>
+<span class="sourceLineNo">075</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos.ConnectionHeader;<a name="line.75"></a>
+<span class="sourceLineNo">076</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos.ExceptionResponse;<a name="line.76"></a>
+<span class="sourceLineNo">077</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos.RequestHeader;<a name="line.77"></a>
+<span class="sourceLineNo">078</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos.ResponseHeader;<a name="line.78"></a>
 <span class="sourceLineNo">079</span><a name="line.79"></a>
 <span class="sourceLineNo">080</span>/**<a name="line.80"></a>
 <span class="sourceLineNo">081</span> * Thread that reads responses and notifies callers. Each connection owns a socket connected to a<a name="line.81"></a>
@@ -271,533 +271,545 @@
 <span class="sourceLineNo">263</span>        /*<a name="line.263"></a>
 <span class="sourceLineNo">264</span>         * The max number of retries is 45, which amounts to 20s*45 = 15 minutes retries.<a name="line.264"></a>
 <span class="sourceLineNo">265</span>         */<a name="line.265"></a>
-<span class="sourceLineNo">266</span>        handleConnectionFailure(timeoutFailures++, this.rpcClient.maxRetries, toe);<a name="line.266"></a>
-<span class="sourceLineNo">267</span>      } catch (IOException ie) {<a name="line.267"></a>
-<span class="sourceLineNo">268</span>        handleConnectionFailure(ioFailures++, this.rpcClient.maxRetries, ie);<a name="line.268"></a>
-<span class="sourceLineNo">269</span>      }<a name="line.269"></a>
-<span class="sourceLineNo">270</span>    }<a name="line.270"></a>
-<span class="sourceLineNo">271</span>  }<a name="line.271"></a>
-<span class="sourceLineNo">272</span><a name="line.272"></a>
-<span class="sourceLineNo">273</span>  /**<a name="line.273"></a>
-<span class="sourceLineNo">274</span>   * Handle connection failures If the current number of retries is equal to the max number of<a name="line.274"></a>
-<span class="sourceLineNo">275</span>   * retries, stop retrying and throw the exception; Otherwise backoff N seconds and try connecting<a name="line.275"></a>
-<span class="sourceLineNo">276</span>   * again. This Method is only called from inside setupIOstreams(), which is synchronized. Hence<a name="line.276"></a>
-<span class="sourceLineNo">277</span>   * the sleep is synchronized; the locks will be retained.<a name="line.277"></a>
-<span class="sourceLineNo">278</span>   * @param curRetries current number of retries<a name="line.278"></a>
-<span class="sourceLineNo">279</span>   * @param maxRetries max number of retries allowed<a name="line.279"></a>
-<span class="sourceLineNo">280</span>   * @param ioe failure reason<a name="line.280"></a>
-<span class="sourceLineNo">281</span>   * @throws IOException if max number of retries is reached<a name="line.281"></a>
-<span class="sourceLineNo">282</span>   */<a name="line.282"></a>
-<span class="sourceLineNo">283</span>  private void handleConnectionFailure(int curRetries, int maxRetries, IOException ioe)<a name="line.283"></a>
-<span class="sourceLineNo">284</span>      throws IOException {<a name="line.284"></a>
-<span class="sourceLineNo">285</span>    closeSocket();<a name="line.285"></a>
-<span class="sourceLineNo">286</span><a name="line.286"></a>
-<span class="sourceLineNo">287</span>    // throw the exception if the maximum number of retries is reached<a name="line.287"></a>
-<span class="sourceLineNo">288</span>    if (curRetries &gt;= maxRetries || ExceptionUtil.isInterrupt(ioe)) {<a name="line.288"></a>
-<span class="sourceLineNo">289</span>      throw ioe;<a name="line.289"></a>
-<span class="sourceLineNo">290</span>    }<a name="line.290"></a>
-<span class="sourceLineNo">291</span><a name="line.291"></a>
-<span class="sourceLineNo">292</span>    // otherwise back off and retry<a name="line.292"></a>
-<span class="sourceLineNo">293</span>    try {<a name="line.293"></a>
-<span class="sourceLineNo">294</span>      Thread.sleep(this.rpcClient.failureSleep);<a name="line.294"></a>
-<span class="sourceLineNo">295</span>    } catch (InterruptedException ie) {<a name="line.295"></a>
-<span class="sourceLineNo">296</span>      ExceptionUtil.rethrowIfInterrupt(ie);<a name="line.296"></a>
-<span class="sourceLineNo">297</span>    }<a name="line.297"></a>
-<span class="sourceLineNo">298</span><a name="line.298"></a>
-<span class="sourceLineNo">299</span>    LOG.info("Retrying connect to server: " + remoteId.getAddress() + " after sleeping "<a name="line.299"></a>
-<span class="sourceLineNo">300</span>        + this.rpcClient.failureSleep + "ms. Already tried " + curRetries + " time(s).");<a name="line.300"></a>
-<span class="sourceLineNo">301</span>  }<a name="line.301"></a>
-<span class="sourceLineNo">302</span><a name="line.302"></a>
-<span class="sourceLineNo">303</span>  /*<a name="line.303"></a>
-<span class="sourceLineNo">304</span>   * wait till someone signals us to start reading RPC response or it is idle too long, it is marked<a name="line.304"></a>
-<span class="sourceLineNo">305</span>   * as to be closed, or the client is marked as not running.<a name="line.305"></a>
-<span class="sourceLineNo">306</span>   * @return true if it is time to read a response; false otherwise.<a name="line.306"></a>
-<span class="sourceLineNo">307</span>   */<a name="line.307"></a>
-<span class="sourceLineNo">308</span>  private synchronized boolean waitForWork() {<a name="line.308"></a>
-<span class="sourceLineNo">309</span>    // beware of the concurrent access to the calls list: we can add calls, but as well<a name="line.309"></a>
-<span class="sourceLineNo">310</span>    // remove them.<a name="line.310"></a>
-<span class="sourceLineNo">311</span>    long waitUntil = EnvironmentEdgeManager.currentTime() + this.rpcClient.minIdleTimeBeforeClose;<a name="line.311"></a>
-<span class="sourceLineNo">312</span>    for (;;) {<a name="line.312"></a>
-<span class="sourceLineNo">313</span>      if (thread == null) {<a name="line.313"></a>
-<span class="sourceLineNo">314</span>        return false;<a name="line.314"></a>
-<span class="sourceLineNo">315</span>      }<a name="line.315"></a>
-<span class="sourceLineNo">316</span>      if (!calls.isEmpty()) {<a name="line.316"></a>
-<span class="sourceLineNo">317</span>        return true;<a name="line.317"></a>
-<span class="sourceLineNo">318</span>      }<a name="line.318"></a>
-<span class="sourceLineNo">319</span>      if (EnvironmentEdgeManager.currentTime() &gt;= waitUntil) {<a name="line.319"></a>
-<span class="sourceLineNo">320</span>        closeConn(<a name="line.320"></a>
-<span class="sourceLineNo">321</span>          new IOException("idle connection closed with " + calls.size() + " pending request(s)"));<a name="line.321"></a>
-<span class="sourceLineNo">322</span>        return false;<a name="line.322"></a>
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-<span class="sourceLineNo">324</span>      try {<a name="line.324"></a>
-<span class="sourceLineNo">325</span>        wait(Math.min(this.rpcClient.minIdleTimeBeforeClose, 1000));<a name="line.325"></a>
-<span class="sourceLineNo">326</span>      } catch (InterruptedException e) {<a name="line.326"></a>
-<span class="sourceLineNo">327</span>      }<a name="line.327"></a>
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-<span class="sourceLineNo">330</span><a name="line.330"></a>
-<span class="sourceLineNo">331</span>  @Override<a name="line.331"></a>
-<span class="sourceLineNo">332</span>  public void run() {<a name="line.332"></a>
-<span class="sourceLineNo">333</span>    if (LOG.isTraceEnabled()) {<a name="line.333"></a>
-<span class="sourceLineNo">334</span>      LOG.trace(threadName + ": starting, connections " + this.rpcClient.connections.size());<a name="line.334"></a>
-<span class="sourceLineNo">335</span>    }<a name="line.335"></a>
-<span class="sourceLineNo">336</span>    while (waitForWork()) {<a name="line.336"></a>
-<span class="sourceLineNo">337</span>      readResponse();<a name="line.337"></a>
-<span class="sourceLineNo">338</span>    }<a name="line.338"></a>
-<span class="sourceLineNo">339</span>    if (LOG.isTraceEnabled()) {<a name="line.339"></a>
-<span class="sourceLineNo">340</span>      LOG.trace(threadName + ": stopped, connections " + this.rpcClient.connections.size());<a name="line.340"></a>
-<span class="sourceLineNo">341</span>    }<a name="line.341"></a>
-<span class="sourceLineNo">342</span>  }<a name="line.342"></a>
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-<span class="sourceLineNo">344</span>  private void disposeSasl() {<a name="line.344"></a>
-<span class="sourceLineNo">345</span>    if (saslRpcClient != null) {<a name="line.345"></a>
-<span class="sourceLineNo">346</span>      saslRpcClient.dispose();<a name="line.346"></a>
-<span class="sourceLineNo">347</span>      saslRpcClient = null;<a name="line.347"></a>
-<span class="sourceLineNo">348</span>    }<a name="line.348"></a>
-<span class="sourceLineNo">349</span>  }<a name="line.349"></a>
-<span class="sourceLineNo">350</span><a name="line.350"></a>
-<span class="sourceLineNo">351</span>  private boolean setupSaslConnection(final InputStream in2, final OutputStream out2)<a name="line.351"></a>
-<span class="sourceLineNo">352</span>      throws IOException {<a name="line.352"></a>
-<span class="sourceLineNo">353</span>    saslRpcClient = new HBaseSaslRpcClient(authMethod, token, serverPrincipal,<a name="line.353"></a>
-<span class="sourceLineNo">354</span>        this.rpcClient.fallbackAllowed, this.rpcClient.conf.get("hbase.rpc.protection",<a name="line.354"></a>
-<span class="sourceLineNo">355</span>          QualityOfProtection.AUTHENTICATION.name().toLowerCase(Locale.ROOT)),<a name="line.355"></a>
-<span class="sourceLineNo">356</span>        this.rpcClient.conf.getBoolean(CRYPTO_AES_ENABLED_KEY, CRYPTO_AES_ENABLED_DEFAULT));<a name="line.356"></a>
-<span class="sourceLineNo">357</span>    return saslRpcClient.saslConnect(in2, out2);<a name="line.357"></a>
-<span class="sourceLineNo">358</span>  }<a name="line.358"></a>
-<span class="sourceLineNo">359</span><a name="line.359"></a>
-<span class="sourceLineNo">360</span>  /**<a name="line.360"></a>
-<span class="sourceLineNo">361</span>   * If multiple clients with the same principal try to connect to the same server at the same time,<a name="line.361"></a>
-<span class="sourceLineNo">362</span>   * the server assumes a replay attack is in progress. This is a feature of kerberos. In order to<a name="line.362"></a>
-<span class="sourceLineNo">363</span>   * work around this, what is done is that the client backs off randomly and tries to initiate the<a name="line.363"></a>
-<span class="sourceLineNo">364</span>   * connection again. The other problem is to do with ticket expiry. To handle that, a relogin is<a name="line.364"></a>
-<span class="sourceLineNo">365</span>   * attempted.<a name="line.365"></a>
-<span class="sourceLineNo">366</span>   * &lt;p&gt;<a name="line.366"></a>
-<span class="sourceLineNo">367</span>   * The retry logic is governed by the {@link #shouldAuthenticateOverKrb} method. In case when the<a name="line.367"></a>
-<span class="sourceLineNo">368</span>   * user doesn't have valid credentials, we don't need to retry (from cache or ticket). In such<a name="line.368"></a>
-<span class="sourceLineNo">369</span>   * cases, it is prudent to throw a runtime exception when we receive a SaslException from the<a name="line.369"></a>
-<span class="sourceLineNo">370</span>   * underlying authentication implementation, so there is no retry from other high level (for eg,<a name="line.370"></a>
-<span class="sourceLineNo">371</span>   * HCM or HBaseAdmin).<a name="line.371"></a>
-<span class="sourceLineNo">372</span>   * &lt;/p&gt;<a name="line.372"></a>
-<span class="sourceLineNo">373</span>   */<a name="line.373"></a>
-<span class="sourceLineNo">374</span>  private void handleSaslConnectionFailure(final int currRetries, final int maxRetries,<a name="line.374"></a>
-<span class="sourceLineNo">375</span>      final Exception ex, final UserGroupInformation user)<a name="line.375"></a>
-<span class="sourceLineNo">376</span>      throws IOException, InterruptedException {<a name="line.376"></a>
-<span class="sourceLineNo">377</span>    closeSocket();<a name="line.377"></a>
-<span class="sourceLineNo">378</span>    user.doAs(new PrivilegedExceptionAction&lt;Object&gt;() {<a name="line.378"></a>
-<span class="sourceLineNo">379</span>      @Override<a name="line.379"></a>
-<span class="sourceLineNo">380</span>      public Object run() throws IOException, InterruptedException {<a name="line.380"></a>
-<span class="sourceLineNo">381</span>        if (shouldAuthenticateOverKrb()) {<a name="line.381"></a>
-<span class="sourceLineNo">382</span>          if (currRetries &lt; maxRetries) {<a name="line.382"></a>
-<span class="sourceLineNo">383</span>            if (LOG.isDebugEnabled()) {<a name="line.383"></a>
-<span class="sourceLineNo">384</span>              LOG.debug("Exception encountered while connecting to " + "the server : " + ex);<a name="line.384"></a>
-<span class="sourceLineNo">385</span>            }<a name="line.385"></a>
-<span class="sourceLineNo">386</span>            // try re-login<a name="line.386"></a>
-<span class="sourceLineNo">387</span>            relogin();<a name="line.387"></a>
-<span class="sourceLineNo">388</span>            disposeSasl();<a name="line.388"></a>
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-<span class="sourceLineNo">390</span>            // we are sleeping with the Connection lock held but since this<a name="line.390"></a>
-<span class="sourceLineNo">391</span>            // connection instance is being used for connecting to the server<a name="line.391"></a>
-<span class="sourceLineNo">392</span>            // in question, it is okay<a name="line.392"></a>
-<span class="sourceLineNo">393</span>            Thread.sleep(ThreadLocalRandom.current().nextInt(reloginMaxBackoff) + 1);<a name="line.393"></a>
-<span class="sourceLineNo">394</span>            return null;<a name="line.394"></a>
-<span class="sourceLineNo">395</span>          } else {<a name="line.395"></a>
-<span class="sourceLineNo">396</span>            String msg = "Couldn't setup connection for "<a name="line.396"></a>
-<span class="sourceLineNo">397</span>                + UserGroupInformation.getLoginUser().getUserName() + " to " + serverPrincipal;<a name="line.397"></a>
-<span class="sourceLineNo">398</span>            LOG.warn(msg, ex);<a name="line.398"></a>
-<span class="sourceLineNo">399</span>            throw (IOException) new IOException(msg).initCause(ex);<a name="line.399"></a>
-<span class="sourceLineNo">400</span>          }<a name="line.400"></a>
-<span class="sourceLineNo">401</span>        } else {<a name="line.401"></a>
-<span class="sourceLineNo">402</span>          LOG.warn("Exception encountered while connecting to " + "the server : " + ex);<a name="line.402"></a>
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+<span class="sourceLineNo">553</span>    try {<a name="line.553"></a>
+<span class="sourceLineNo">554</span>      // read the ConnectionHeaderResponse from server<a name="line.554"></a>
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+<span class="sourceLineNo">561</span><a name="line.561"></a>
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+<span class="sourceLineNo">564</span><a name="line.564"></a>
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+<span class="sourceLineNo">572</span>          " server has the correct configuration to support the additional function.", ste);<a name="line.572"></a>
+<span class="sourceLineNo">573</span>      // timeout when waiting the connection header response, ignore the additional function<a name="line.573"></a>
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+<span class="sourceLineNo">577</span><a name="line.577"></a>
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+<span class="sourceLineNo">580</span>    // initilize the Crypto AES with CryptoCipherMeta<a name="line.580"></a>
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+<span class="sourceLineNo">582</span>    // reset the inputStream/outputStream for Crypto AES encryption<a name="line.582"></a>
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+<span class="sourceLineNo">586</span><a name="line.586"></a>
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+<span class="sourceLineNo">592</span>  }<a name="line.592"></a>
+<span class="sourceLineNo">593</span><a name="line.593"></a>
+<span class="sourceLineNo">594</span>  /**<a name="line.594"></a>
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+<span class="sourceLineNo">598</span>   */<a name="line.598"></a>
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+<span class="sourceLineNo">613</span>    // is still valid, and, if so we do the write to the socket. If the write fails, we don't<a name="line.613"></a>
+<span class="sourceLineNo">614</span>    // know where we stand, we have to close the connection.<a name="line.614"></a>
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+<span class="sourceLineNo">618</span><a name="line.618"></a>
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+<span class="sourceLineNo">621</span>    // pending calls map.<a name="l

<TRUNCATED>

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