fix batch 2

Author: wzy1935

src/main/asciidoc/index.adoc

@@ -178,7 +178,7 @@ Please check the {@link io.vertx.httpproxy.interceptors.BodyTransformer} for oth
 
 ==== WebSocket interceptor
 
-You can use WebSocket interceptor to wrap a interceptor to let it allow WebSocket handling:
+You can use WebSocket interceptor to wrap an interceptor to let it allow WebSocket handling:
 
 [source,java]
 ----

src/test/java/io/vertx/tests/WebSocketCacheTest.java

@@ -37,11 +37,11 @@ public void testWsWithCache(TestContext ctx) {
                 latch.complete();
               }));
             });
-            ws2.write(Buffer.buffer("v2"));
+            ws2.write(Buffer.buffer("v2")); // second WebSocket, send and reply "v2"
           }));
         }));
       });
-      ws1.write(Buffer.buffer("v1"));
+      ws1.write(Buffer.buffer("v1")); // first WebSocket, send and reply "v1"
     }));
   }
 }

src/test/java/io/vertx/tests/interceptors/WebSocketInterceptorTest.java

@@ -40,6 +40,14 @@ private SocketAddress backend(TestContext ctx, Async async) {
     });
   }
 
+  /**
+   * The interceptor adds a suffix to the uri. If uri is changed by the interceptor, it calls a hit.
+   *
+   * @param ctx the test context
+   * @param interceptor the added interceptor
+   * @param httpHit if interceptor changes the regular HTTP packet
+   * @param wsHit if interceptor changes the WebSocket packet
+   */
   private void testWithInterceptor(TestContext ctx, ProxyInterceptor interceptor, boolean httpHit, boolean wsHit) {
     Async latch = ctx.async(4);
     SocketAddress backend = backend(ctx, latch);
@@ -77,18 +85,21 @@ public void testNotInterceptor(TestContext ctx) {
 
   @Test
   public void testNotApplySocket(TestContext ctx) {
+    // this interceptor only applies to regular HTTP traffic
     ProxyInterceptor interceptor = PathInterceptor.changePath(x -> x + "/updated");
     testWithInterceptor(ctx, interceptor, true, false);
   }
 
   @Test
   public void testWithSocketInterceptor(TestContext ctx) {
+    // this interceptor applies to both regular HTTP traffic and WebSocket handshake
     ProxyInterceptor interceptor = WebSocketInterceptor.allow(PathInterceptor.changePath(x -> x + "/updated"));
     testWithInterceptor(ctx, interceptor, true, true);
   }
 
   @Test
   public void testOnlyHitSocket(TestContext ctx) {
+    // this interceptor only applies to WebSocket handshake
     ProxyInterceptor interceptor = new ProxyInterceptor() {
       @Override
       public Future<ProxyResponse> handleProxyRequest(ProxyContext context) {