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From ma...@apache.org
Subject svn commit: r1803902 - in /tomcat/tc8.5.x/trunk: ./ java/org/apache/tomcat/websocket/ test/org/apache/tomcat/websocket/ webapps/docs/
Date Wed, 02 Aug 2017 18:56:21 GMT
Author: markt
Date: Wed Aug  2 18:56:21 2017
New Revision: 1803902

URL: http://svn.apache.org/viewvc?rev=1803902&view=rev
Log:
Fix https://bz.apache.org/bugzilla/show_bug.cgi?id=57767
Add support to the WebSocket client for following redirects when attempting to establish a
WebSocket connection.
Patch provided by J Fernandez.

Modified:
    tomcat/tc8.5.x/trunk/   (props changed)
    tomcat/tc8.5.x/trunk/java/org/apache/tomcat/websocket/Constants.java
    tomcat/tc8.5.x/trunk/java/org/apache/tomcat/websocket/LocalStrings.properties
    tomcat/tc8.5.x/trunk/java/org/apache/tomcat/websocket/WsWebSocketContainer.java
    tomcat/tc8.5.x/trunk/test/org/apache/tomcat/websocket/TestWebSocketFrameClient.java
    tomcat/tc8.5.x/trunk/webapps/docs/changelog.xml
    tomcat/tc8.5.x/trunk/webapps/docs/web-socket-howto.xml

Propchange: tomcat/tc8.5.x/trunk/
------------------------------------------------------------------------------
--- svn:mergeinfo (original)
+++ svn:mergeinfo Wed Aug  2 18:56:21 2017
@@ -1 +1 @@
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 8,1762172,1762182,1762201-1762202,1762204,1762208,1762288,1762296,1762324,1762348,1762353,1762362,1762374,1762492,1762503,1762505,1762541,1762608,1762710,1762753,1762766,1762769,1762944,1762947,1762953,1763167,1763179,1763232,1763259,1763271-1763272,1763276-1763277,1763319-1763320,1763370,1763372,1763375,1763377,1763393,1763412,1763430,1763450,1763462,1763505,1763511-1763512,1763516,1763518,1763520,1763529,1763559,1763565,1763568,1763574,1763619,1763634-1763635,1763718,1763786,1763798-1763799,1763810,1763813,1763815,1763819,1763831,1764083,1764425,1764646,1764648-1764649,1764659,1764663,1764682,1764862,1764866-1764867,1764870,1764897,1765133,1765299,1765358,1765439,1765447,1765495,1765502,1765569-1765571,1765579,1765582,1765589-1765590,1765794,1765801,1765813,1765815,1766276,1766514,1766533,1766535,1766664,1766675,1766698,1766700,1766822,1766834,1766840,1767047,1767328,1767362,1767368,1767429,1767471,1767505,1767641-1767644,1767903,1767945-1767946,1768123,1768283,1768520,1768569,176
 8651,1768762,1768922,1769191,1769263,1769630,1769833,1769975,1770047,1770140,1770180,1770258,1770389,1770656,1770666,1770718,1770762,1770952,1770954,1770956,1770961,1771087,1771126,1771139,1771143,1771149,1771156,1771266,1771316,1771386,1771611,1771613,1771711,1771718,1771723-1771724,1771730,1771743,1771752,1771853,1771963,1772170,1772174,1772223,1772229,1772318-1772319,1772353,1772355,1772554,1772603-1772609,1772849,1772865,1772870,1772872,1772875-1772876,1772881,1772886,1772947,1773306,1773344,1773418,1773756,1773813-1773814,1774052,1774102,1774131,1774161,1774164,1774248,1774253,1774257,1774259,1774262,1774267,1774271,1774303,1774340,1774406,1774412,1774426,1774433,1774522-1774523,1774526,1774528-1774529,1774531,1774732-1774736,1774738-1774739,1774741-1774742,1774749,1774755,1774789,1774858,1774867,1775596,1775985-1775986,1776540,1776937,1776954,1777011,1777173,1777189,1777211,1777524,1777546,1777605,1777619,1777647,1777721-1777722,1777967,1778061,1778138-1778139,1778141-1778150,
 1778154,1778275-1778276,1778295,1778342,1778348,1778404,1778424,1778426,1778582,1778600,1779641,1779654,1779708,1779718,1779897,1779899,1780109,1780120,1780189,1780196,1780488,1780514-1780516,1780601,1780606,1780609-1780610,1780652,1780991,1780995-1780996,1781174,1781569,1781975,1781986,1782116,1782383-1782384,1782566,1782572,1782775,1782779,1782814,1782857,1782868,1782934,1782946-1782947,1782956,1783144-1783147,1783155,1783408,1784182,1784565,1784583,1784657,1784669,1784712,1784723,1784751,1784767,1784806,1784818,1784911,1784926,1784956,1784963,1785032,1785037,1785245,1785271,1785310,1785317,1785643,1785667,1785762,1785774,1785823,1785935,1786051,1786070,1786123-1786124,1786127,1786129,1786341,1786378,1786844,1787200,1787250,1787405,1787701,1787703,1787938,1787959,1787973,1788223-1788224,1788228,1788232,1788241-1788242,1788248,1788323,1788328,1788455,1788460,1788473,1788543-1788544,1788548,1788550,1788554,1788558,1788560,1788567,1788569,1788572,1788647,1788732,1788741,1788747,17887
 53,1788764,1788771,1788834,1788841,1788852,1788860,1788883,1788890,1789051,1789400,1789415,1789442-1789443,1789447,1789453,1789456,1789458,1789461-1789463,1789465-1789467,1789470,1789472,1789474,1789476,1789479-1789480,1789733,1789735,1789744-1789745,1789937,1789984,1790119,1790180,1790183,1790376,1790614,1790983,1790991,1791050,1791090,1791095-1791096,1791099,1791101-1791103,1791124,1791129,1791134,1791137,1791298,1791527,1791557,1791970,1792033,1792038,1792055,1792093,1792140,1792460,1792468,1792791,1792957,1793095,1793121,1793123,1793127,1793136,1793139,1793147-1793148,1793266,1793437,1793449,1793460,1793468,1793487,1793498,1793502,1793514,1793682-1793683,1793711-1793712,1793719,1793736,1793746,1793771,1793776,1793798,1793802,1793812,1793819,1793844,1793854,1793887,1793891,1793898,1793901-1793902,1793907,1793910,1793980,1794674,1794941-1794942,1795278,1795289,1795298,1795305,1795813,1795893,1796090,1796275,1796693-1796695,1796729,1796806,1796836,1796873,1796878,1797197,1797338,17
 97344,1797354-1797355,1797516,1797528,1797532,1797536,1797540,1797543,1797677-1797678,1797692,1797694,1797748,1797828,1798126,1798238,1798280,1798371,1798379,1798384,1798390,1798395,1798419,1798505,1798507,1798509,1798533,1798546,1798561,1798977,1799115,1799126,1799164,1799190,1799194,1799216,1799231,1799250,1799253,1799285,1799368,1799412,1799515,1799701-1799702,1799704,1799709,1799885,1799893,1799895,1799916,1800136-1800138,1800202,1800309,1800390,1800629,1800791,1800816,1800850,1800864,1800867,1800874,1800885,1800981,1800984,1800988,1800992,1801195,1801686,1801688,1801709,1801717,1801774,1801778,1802083,1802195,1802204-1802205,1802210,1802225-1802226,1802229,1802403,1802475,1802788,1802796,1802803,1802820,1802828,1802833,1802836,1803030,1803038,1803055,1803135,1803165,1803174,1803193,1803205,1803224,1803278,1803281,1803295,1803297,1803446,1803451,1803456,1803459,1803616,1803636,1803828,1803901

Modified: tomcat/tc8.5.x/trunk/java/org/apache/tomcat/websocket/Constants.java
URL: http://svn.apache.org/viewvc/tomcat/tc8.5.x/trunk/java/org/apache/tomcat/websocket/Constants.java?rev=1803902&r1=1803901&r2=1803902&view=diff
==============================================================================
--- tomcat/tc8.5.x/trunk/java/org/apache/tomcat/websocket/Constants.java (original)
+++ tomcat/tc8.5.x/trunk/java/org/apache/tomcat/websocket/Constants.java Wed Aug  2 18:56:21
2017
@@ -73,6 +73,13 @@ public class Constants {
     public static final String IO_TIMEOUT_MS_PROPERTY =
             "org.apache.tomcat.websocket.IO_TIMEOUT_MS";
     public static final long IO_TIMEOUT_MS_DEFAULT = 5000;
+
+    // RFC 2068 recommended a limit of 5
+    // Most browsers have a default limit of 20
+    public static final String MAX_REDIRECTIONS_PROPERTY =
+            "org.apache.tomcat.websocket.MAX_REDIRECTIONS";
+    public static final int MAX_REDIRECTIONS_DEFAULT = 20;
+
     // HTTP upgrade header names and values
     public static final String HOST_HEADER_NAME = "Host";
     public static final String UPGRADE_HEADER_NAME = "Upgrade";
@@ -80,12 +87,21 @@ public class Constants {
     public static final String ORIGIN_HEADER_NAME = "Origin";
     public static final String CONNECTION_HEADER_NAME = "Connection";
     public static final String CONNECTION_HEADER_VALUE = "upgrade";
+    public static final String LOCATION_HEADER_NAME = "Location";
     public static final String WS_VERSION_HEADER_NAME = "Sec-WebSocket-Version";
     public static final String WS_VERSION_HEADER_VALUE = "13";
     public static final String WS_KEY_HEADER_NAME = "Sec-WebSocket-Key";
     public static final String WS_PROTOCOL_HEADER_NAME = "Sec-WebSocket-Protocol";
     public static final String WS_EXTENSIONS_HEADER_NAME = "Sec-WebSocket-Extensions";
 
+    /// HTTP redirection status codes
+    public static final int MULTIPLE_CHOICES = 300;
+    public static final int MOVED_PERMANENTLY = 301;
+    public static final int FOUND = 302;
+    public static final int SEE_OTHER = 303;
+    public static final int USE_PROXY = 305;
+    public static final int TEMPORARY_REDIRECT = 307;
+
     // Configuration for Origin header in client
     static final String DEFAULT_ORIGIN_HEADER_VALUE =
             System.getProperty("org.apache.tomcat.websocket.DEFAULT_ORIGIN_HEADER_VALUE");
@@ -117,8 +133,7 @@ public class Constants {
             Boolean.getBoolean("org.apache.tomcat.websocket.STREAMS_DROP_EMPTY_MESSAGES");
 
     public static final boolean STRICT_SPEC_COMPLIANCE =
-            Boolean.getBoolean(
-                    "org.apache.tomcat.websocket.STRICT_SPEC_COMPLIANCE");
+            Boolean.getBoolean("org.apache.tomcat.websocket.STRICT_SPEC_COMPLIANCE");
 
     public static final List<Extension> INSTALLED_EXTENSIONS;
 

Modified: tomcat/tc8.5.x/trunk/java/org/apache/tomcat/websocket/LocalStrings.properties
URL: http://svn.apache.org/viewvc/tomcat/tc8.5.x/trunk/java/org/apache/tomcat/websocket/LocalStrings.properties?rev=1803902&r1=1803901&r2=1803902&view=diff
==============================================================================
--- tomcat/tc8.5.x/trunk/java/org/apache/tomcat/websocket/LocalStrings.properties (original)
+++ tomcat/tc8.5.x/trunk/java/org/apache/tomcat/websocket/LocalStrings.properties Wed Aug
 2 18:56:21 2017
@@ -136,3 +136,5 @@ wsWebSocketContainer.pathWrongScheme=The
 wsWebSocketContainer.proxyConnectFail=Failed to connect to the configured Proxy [{0}]. The
HTTP response code was [{1}]
 wsWebSocketContainer.sessionCloseFail=Session with ID [{0}] did not close cleanly
 wsWebSocketContainer.sslEngineFail=Unable to create SSLEngine to support SSL/TLS connections
+wsWebSocketContainer.missingLocationHeader=Failed to handle HTTP response code [{0}]. Missing
Location header in response
+wsWebSocketContainer.redirectThreshold=Cyclic Location header [{0}] detected / reached max
number of redirects [{1}] of max [{2}]
\ No newline at end of file

Modified: tomcat/tc8.5.x/trunk/java/org/apache/tomcat/websocket/WsWebSocketContainer.java
URL: http://svn.apache.org/viewvc/tomcat/tc8.5.x/trunk/java/org/apache/tomcat/websocket/WsWebSocketContainer.java?rev=1803902&r1=1803901&r2=1803902&view=diff
==============================================================================
--- tomcat/tc8.5.x/trunk/java/org/apache/tomcat/websocket/WsWebSocketContainer.java (original)
+++ tomcat/tc8.5.x/trunk/java/org/apache/tomcat/websocket/WsWebSocketContainer.java Wed Aug
 2 18:56:21 2017
@@ -26,6 +26,7 @@ import java.net.Proxy;
 import java.net.ProxySelector;
 import java.net.SocketAddress;
 import java.net.URI;
+import java.net.URISyntaxException;
 import java.nio.ByteBuffer;
 import java.nio.channels.AsynchronousChannelGroup;
 import java.nio.channels.AsynchronousSocketChannel;
@@ -99,6 +100,7 @@ public class WsWebSocketContainer implem
     private volatile long defaultMaxSessionIdleTimeout = 0;
     private int backgroundProcessCount = 0;
     private int processPeriod = Constants.DEFAULT_PROCESS_PERIOD;
+    private Set<URI> redirectSet = null;
 
     private InstanceManager instanceManager;
 
@@ -277,10 +279,11 @@ public class WsWebSocketContainer implem
                     "wsWebSocketContainer.asynchronousSocketChannelFail"), ioe);
         }
 
+        Map<String,Object> userProperties = clientEndpointConfiguration.getUserProperties();
+
         // Get the connection timeout
         long timeout = Constants.IO_TIMEOUT_MS_DEFAULT;
-        String timeoutValue = (String) clientEndpointConfiguration.getUserProperties().get(
-                Constants.IO_TIMEOUT_MS_PROPERTY);
+        String timeoutValue = (String) userProperties.get(Constants.IO_TIMEOUT_MS_PROPERTY);
         if (timeoutValue != null) {
             timeout = Long.valueOf(timeoutValue).intValue();
         }
@@ -323,8 +326,7 @@ public class WsWebSocketContainer implem
             // Regardless of whether a non-secure wrapper was created for a
             // proxy CONNECT, need to use TLS from this point on so wrap the
             // original AsynchronousSocketChannel
-            SSLEngine sslEngine = createSSLEngine(
-                    clientEndpointConfiguration.getUserProperties());
+            SSLEngine sslEngine = createSSLEngine(userProperties);
             channel = new AsyncChannelWrapperSecure(socketChannel, sslEngine);
         } else if (channel == null) {
             // Only need to wrap as this point if it wasn't wrapped to process a
@@ -341,8 +343,57 @@ public class WsWebSocketContainer implem
             writeRequest(channel, request, timeout);
 
             HttpResponse httpResponse = processResponse(response, channel, timeout);
-            // TODO: Handle redirects
+
+            // Check maximum permitted redirects
+            int maxRedirects = Constants.MAX_REDIRECTIONS_DEFAULT;
+            String maxRedirectsValue =
+                    (String) userProperties.get(Constants.MAX_REDIRECTIONS_PROPERTY);
+            if (maxRedirectsValue != null) {
+                maxRedirects = Integer.valueOf(maxRedirectsValue).intValue();
+            }
+
             if (httpResponse.status != 101) {
+                if(isRedirectStatus(httpResponse.status)){
+                    List<String> locationHeader =
+                            httpResponse.getHandshakeResponse().getHeaders().get(
+                                    Constants.LOCATION_HEADER_NAME);
+
+                    if (locationHeader == null || locationHeader.isEmpty() ||
+                            locationHeader.get(0) == null || locationHeader.get(0).isEmpty())
{
+                        throw new DeploymentException(sm.getString(
+                                "wsWebSocketContainer.missingLocationHeader",
+                                Integer.toString(httpResponse.status)));
+                    }
+
+                    URI redirectLocation = URI.create(locationHeader.get(0)).normalize();
+
+                    if (!redirectLocation.isAbsolute()) {
+                        redirectLocation = path.resolve(redirectLocation);
+                    }
+
+                    String redirectScheme = redirectLocation.getScheme().toLowerCase();
+
+                    if (redirectScheme.startsWith("http")) {
+                        redirectLocation = new URI(redirectScheme.replace("http", "ws"),
+                                redirectLocation.getUserInfo(), redirectLocation.getHost(),
+                                redirectLocation.getPort(), redirectLocation.getPath(),
+                                redirectLocation.getQuery(), redirectLocation.getFragment());
+                    }
+
+                    if (redirectSet == null) {
+                        redirectSet = new HashSet<>(maxRedirects);
+                    }
+
+                    if (!redirectSet.add(redirectLocation) || redirectSet.size() > maxRedirects)
{
+                        throw new DeploymentException(sm.getString(
+                                "wsWebSocketContainer.redirectThreshold", redirectLocation,
+                                Integer.toString(redirectSet.size()),
+                                Integer.toString(maxRedirects)));
+                    }
+
+                    return connectToServer(endpoint, clientEndpointConfiguration, redirectLocation);
+
+                }
                 throw new DeploymentException(sm.getString("wsWebSocketContainer.invalidStatus",
                         Integer.toString(httpResponse.status)));
             }
@@ -391,7 +442,7 @@ public class WsWebSocketContainer implem
 
             success = true;
         } catch (ExecutionException | InterruptedException | SSLException |
-                EOFException | TimeoutException e) {
+                EOFException | TimeoutException | URISyntaxException e) {
             throw new DeploymentException(
                     sm.getString("wsWebSocketContainer.httpRequestFailed"), e);
         } finally {
@@ -449,6 +500,27 @@ public class WsWebSocketContainer implem
     }
 
 
+    private static boolean isRedirectStatus(int httpResponseCode) {
+
+        boolean isRedirect = false;
+
+        switch (httpResponseCode) {
+        case Constants.MULTIPLE_CHOICES:
+        case Constants.MOVED_PERMANENTLY:
+        case Constants.FOUND:
+        case Constants.SEE_OTHER:
+        case Constants.USE_PROXY:
+        case Constants.TEMPORARY_REDIRECT:
+            isRedirect = true;
+            break;
+        default:
+            break;
+        }
+
+        return isRedirect;
+    }
+
+
     private static ByteBuffer createProxyRequest(String host, int port) {
         StringBuilder request = new StringBuilder();
         request.append("CONNECT ");

Modified: tomcat/tc8.5.x/trunk/test/org/apache/tomcat/websocket/TestWebSocketFrameClient.java
URL: http://svn.apache.org/viewvc/tomcat/tc8.5.x/trunk/test/org/apache/tomcat/websocket/TestWebSocketFrameClient.java?rev=1803902&r1=1803901&r2=1803902&view=diff
==============================================================================
--- tomcat/tc8.5.x/trunk/test/org/apache/tomcat/websocket/TestWebSocketFrameClient.java (original)
+++ tomcat/tc8.5.x/trunk/test/org/apache/tomcat/websocket/TestWebSocketFrameClient.java Wed
Aug  2 18:56:21 2017
@@ -39,7 +39,6 @@ public class TestWebSocketFrameClient ex
 
     @Test
     public void testConnectToServerEndpoint() throws Exception {
-
         Tomcat tomcat = getTomcatInstance();
         // No file system docBase required
         Context ctx = tomcat.addContext("", null);
@@ -81,7 +80,6 @@ public class TestWebSocketFrameClient ex
 
     @Test
     public void testConnectToRootEndpoint() throws Exception {
-
         Tomcat tomcat = getTomcatInstance();
         // No file system docBase required
         Context ctx = tomcat.addContext("", null);
@@ -97,25 +95,16 @@ public class TestWebSocketFrameClient ex
 
         echoTester("");
         echoTester("/");
-        // FIXME: The ws client doesn't handle any response other than the upgrade,
-        // which may or may not be allowed. In that case, the server will return
-        // a redirect to the root of the webapp to avoid possible broken relative
-        // paths.
-        // echoTester("/foo");
+        echoTester("/foo");
         echoTester("/foo/");
     }
 
     public void echoTester(String path) throws Exception {
-        WebSocketContainer wsContainer =
-                ContainerProvider.getWebSocketContainer();
-        ClientEndpointConfig clientEndpointConfig =
-                ClientEndpointConfig.Builder.create().build();
-        Session wsSession = wsContainer.connectToServer(
-                TesterProgrammaticEndpoint.class,
-                clientEndpointConfig,
-                new URI("ws://localhost:" + getPort() + path));
-        CountDownLatch latch =
-                new CountDownLatch(1);
+        WebSocketContainer wsContainer = ContainerProvider.getWebSocketContainer();
+        ClientEndpointConfig clientEndpointConfig = ClientEndpointConfig.Builder.create().build();
+        Session wsSession = wsContainer.connectToServer(TesterProgrammaticEndpoint.class,
+                clientEndpointConfig, new URI("ws://localhost:" + getPort() + path));
+        CountDownLatch latch = new CountDownLatch(1);
         BasicText handler = new BasicText(latch);
         wsSession.addMessageHandler(handler);
         wsSession.getBasicRemote().sendText("Hello");

Modified: tomcat/tc8.5.x/trunk/webapps/docs/changelog.xml
URL: http://svn.apache.org/viewvc/tomcat/tc8.5.x/trunk/webapps/docs/changelog.xml?rev=1803902&r1=1803901&r2=1803902&view=diff
==============================================================================
--- tomcat/tc8.5.x/trunk/webapps/docs/changelog.xml (original)
+++ tomcat/tc8.5.x/trunk/webapps/docs/changelog.xml Wed Aug  2 18:56:21 2017
@@ -101,6 +101,15 @@
       </fix>
     </changelog>
   </subsection>
+  <subsection name="WebSocket">
+    <changelog>
+      <add>
+        <bug>57767</bug>: Add support to the WebSocket client for following
+        redirects when attempting to establish a WebSocket connection. Patch
+        provided by J Fernandez. (markt)
+      </add>
+    </changelog>
+  </subsection>
 </section>
 <section name="Tomcat 8.5.19 (markt)" rtext="release in progress">
   <subsection name="Catalina">

Modified: tomcat/tc8.5.x/trunk/webapps/docs/web-socket-howto.xml
URL: http://svn.apache.org/viewvc/tomcat/tc8.5.x/trunk/webapps/docs/web-socket-howto.xml?rev=1803902&r1=1803901&r2=1803902&view=diff
==============================================================================
--- tomcat/tc8.5.x/trunk/webapps/docs/web-socket-howto.xml (original)
+++ tomcat/tc8.5.x/trunk/webapps/docs/web-socket-howto.xml Wed Aug  2 18:56:21 2017
@@ -114,6 +114,14 @@
       set then the <code>org.apache.tomcat.websocket.SSL_TRUSTSTORE</code> and
       <code>org.apache.tomcat.websocket.SSL_TRUSTSTORE_PWD</code> properties
       will be ignored.</p>
+
+<p>When using the WebSocket client to connect to server endpoints, the number of
+   HTTP redirects that the client will follow is controlled by the
+   <code>userProperties</code> of the provided
+   <code>javax.websocket.ClientEndpointConfig</code>. The property is
+   <ocde>org.apache.tomcat.websocket.MAX_REDIRECTIONS</ocde>. The default value
+   is 20. Redirection support can be disabled by configuring a value of zero.</p>
+
 </section>
 
 </body>



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