diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index 1e56d65..dcd424e 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -2,6 +2,7 @@
 <project version="4">
   <component name="ChangeListManager">
     <list default="true" id="42982c84-cdb2-4596-b4aa-818c31fc199a" name="Default" comment="">
+      <change type="MODIFICATION" beforePath="$PROJECT_DIR$/.idea/workspace.xml" afterPath="$PROJECT_DIR$/.idea/workspace.xml" />
       <change type="MODIFICATION" beforePath="$PROJECT_DIR$/README.md" afterPath="$PROJECT_DIR$/README.md" />
     </list>
     <ignored path="$PROJECT_DIR$/out/" />
@@ -15,15 +16,13 @@
   </component>
   <component name="ExecutionTargetManager" SELECTED_TARGET="default_target" />
   <component name="FileEditorManager">
-    <leaf>
+    <leaf SIDE_TABS_SIZE_LIMIT_KEY="300">
       <file leaf-file-name="pom.xml" pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/pom.xml">
           <provider selected="true" editor-type-id="text-editor">
             <state relative-caret-position="289">
               <caret line="17" column="10" lean-forward="false" selection-start-line="17" selection-start-column="10" selection-end-line="17" selection-end-column="10" />
-              <folding>
-                <marker date="1504604535000" expanded="true" signature="89:618" ph="..." />
-              </folding>
+              <folding />
             </state>
           </provider>
         </entry>
@@ -32,8 +31,8 @@
         <entry file="file://$PROJECT_DIR$/README.md">
           <provider selected="true" editor-type-id="split-provider[text-editor;markdown-preview-editor]">
             <state split_layout="SPLIT">
-              <first_editor relative-caret-position="116">
-                <caret line="21" column="8" lean-forward="false" selection-start-line="21" selection-start-column="8" selection-end-line="21" selection-end-column="8" />
+              <first_editor relative-caret-position="421">
+                <caret line="37" column="11" lean-forward="true" selection-start-line="37" selection-start-column="11" selection-end-line="37" selection-end-column="11" />
                 <folding />
               </first_editor>
               <second_editor />
@@ -44,8 +43,8 @@
       <file leaf-file-name="security.java" pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/src/main/java/security.java">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="206">
-              <caret line="18" column="14" lean-forward="true" selection-start-line="18" selection-start-column="14" selection-end-line="18" selection-end-column="38" />
+            <state relative-caret-position="306">
+              <caret line="18" column="14" lean-forward="false" selection-start-line="18" selection-start-column="14" selection-end-line="18" selection-end-column="38" />
               <folding>
                 <element signature="n#!!doc" expanded="true" />
                 <element signature="imports" expanded="true" />
@@ -57,8 +56,8 @@
       <file leaf-file-name="test.java" pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/src/main/java/test.java">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="220">
-              <caret line="13" column="32" lean-forward="true" selection-start-line="13" selection-start-column="32" selection-end-line="13" selection-end-column="32" />
+            <state relative-caret-position="221">
+              <caret line="13" column="32" lean-forward="false" selection-start-line="13" selection-start-column="32" selection-end-line="13" selection-end-column="32" />
               <folding />
             </state>
           </provider>
@@ -99,8 +98,10 @@
     <sorting>DEFINITION_ORDER</sorting>
   </component>
   <component name="ProjectFrameBounds">
+    <option name="x" value="-1280" />
+    <option name="y" value="237" />
     <option name="width" value="1280" />
-    <option name="height" value="800" />
+    <option name="height" value="777" />
   </component>
   <component name="ProjectInspectionProfilesVisibleTreeState">
     <entry key="Project Default">
@@ -133,8 +134,6 @@
       <foldersAlwaysOnTop value="true" />
     </navigator>
     <panes>
-      <pane id="Scope" />
-      <pane id="Scratches" />
       <pane id="ProjectPane">
         <subPane>
           <PATH>
@@ -204,12 +203,13 @@
         </subPane>
       </pane>
       <pane id="PackagesPane" />
+      <pane id="Scratches" />
+      <pane id="Scope" />
     </panes>
   </component>
   <component name="PropertiesComponent">
     <property name="WebServerToolWindowFactoryState" value="false" />
     <property name="aspect.path.notification.shown" value="true" />
-    <property name="FullScreen" value="true" />
     <property name="settings.editor.selected.configurable" value="Errors" />
   </component>
   <component name="RunDashboard">
@@ -492,6 +492,7 @@
       <setting name="passParentEnv" value="true" />
       <setting name="launchBrowser" value="true" />
       <setting name="launchBrowserUrl" value="" />
+      <setting name="depsClasspath" value="false" />
       <method />
     </configuration>
     <configuration default="true" type="JUnit" factoryName="JUnit">
@@ -620,6 +621,12 @@
       <method />
     </configuration>
     <configuration default="true" type="js.build_tools.gulp" factoryName="Gulp.js">
+      <node-interpreter>project</node-interpreter>
+      <node-options />
+      <gulpfile />
+      <tasks />
+      <arguments />
+      <envs />
       <method />
     </configuration>
     <configuration default="true" type="js.build_tools.npm" factoryName="npm">
@@ -656,46 +663,47 @@
       <option name="number" value="Default" />
       <option name="presentableId" value="Default" />
       <updated>1504604417100</updated>
-      <workItem from="1504604422158" duration="5443000" />
+      <workItem from="1504604422158" duration="5604000" />
+      <workItem from="1504667680570" duration="1412000" />
     </task>
     <servers />
   </component>
   <component name="TimeTrackingManager">
-    <option name="totallyTimeSpent" value="5443000" />
+    <option name="totallyTimeSpent" value="7016000" />
   </component>
   <component name="ToolWindowManager">
-    <frame x="0" y="0" width="1280" height="800" extended-state="0" />
+    <frame x="-1280" y="237" width="1280" height="777" extended-state="6" />
     <editor active="true" />
     <layout>
-      <window_info id="Palette" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="-1" side_tool="false" content_ui="tabs" />
+      <window_info id="Palette" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="3" side_tool="false" content_ui="tabs" />
       <window_info id="TODO" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="6" side_tool="false" content_ui="tabs" />
-      <window_info id="Nl-Palette" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="-1" side_tool="false" content_ui="tabs" />
-      <window_info id="Messages" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.32876712" sideWeight="0.5" order="-1" side_tool="false" content_ui="tabs" />
-      <window_info id="Palette&#9;" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="-1" side_tool="false" content_ui="tabs" />
-      <window_info id="Image Layers" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="-1" side_tool="false" content_ui="tabs" />
-      <window_info id="Capture Analysis" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="-1" side_tool="false" content_ui="tabs" />
-      <window_info id="Event Log" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="-1" side_tool="true" content_ui="tabs" />
-      <window_info id="Maven Projects" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="-1" side_tool="false" content_ui="tabs" />
-      <window_info id="Run" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="true" show_stripe_button="true" weight="0.33424658" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
-      <window_info id="Version Control" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="-1" side_tool="false" content_ui="tabs" />
-      <window_info id="Properties" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="-1" side_tool="false" content_ui="tabs" />
-      <window_info id="Terminal" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="-1" side_tool="false" content_ui="tabs" />
-      <window_info id="Capture Tool" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="-1" side_tool="false" content_ui="tabs" />
-      <window_info id="Designer" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="-1" side_tool="false" content_ui="tabs" />
-      <window_info id="Project" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="true" show_stripe_button="true" weight="0.24959612" sideWeight="0.5" order="0" side_tool="false" content_ui="combo" />
-      <window_info id="Database" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="-1" side_tool="false" content_ui="tabs" />
+      <window_info id="Nl-Palette" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
+      <window_info id="Palette&#9;" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="3" side_tool="false" content_ui="tabs" />
+      <window_info id="Image Layers" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
+      <window_info id="Capture Analysis" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="3" side_tool="false" content_ui="tabs" />
+      <window_info id="Event Log" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="7" side_tool="true" content_ui="tabs" />
+      <window_info id="Maven Projects" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="3" side_tool="false" content_ui="tabs" />
+      <window_info id="Run" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33424658" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
+      <window_info id="Version Control" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="7" side_tool="false" content_ui="tabs" />
+      <window_info id="Properties" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="3" side_tool="false" content_ui="tabs" />
+      <window_info id="Terminal" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="7" side_tool="false" content_ui="tabs" />
+      <window_info id="Capture Tool" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
+      <window_info id="Designer" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
+      <window_info id="Project" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="true" show_stripe_button="true" weight="0.2536349" sideWeight="0.5" order="0" side_tool="false" content_ui="combo" />
+      <window_info id="Database" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="3" side_tool="false" content_ui="tabs" />
       <window_info id="Structure" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.25" sideWeight="0.5" order="1" side_tool="false" content_ui="tabs" />
       <window_info id="Ant Build" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.25" sideWeight="0.5" order="1" side_tool="false" content_ui="tabs" />
-      <window_info id="UI Designer" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="-1" side_tool="false" content_ui="tabs" />
-      <window_info id="Theme Preview" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="-1" side_tool="false" content_ui="tabs" />
+      <window_info id="UI Designer" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
+      <window_info id="Theme Preview" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="3" side_tool="false" content_ui="tabs" />
       <window_info id="Debug" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.4" sideWeight="0.5" order="3" side_tool="false" content_ui="tabs" />
-      <window_info id="Favorites" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="-1" side_tool="true" content_ui="tabs" />
+      <window_info id="Favorites" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="2" side_tool="true" content_ui="tabs" />
       <window_info id="Cvs" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.25" sideWeight="0.5" order="4" side_tool="false" content_ui="tabs" />
-      <window_info id="Hierarchy" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.25" sideWeight="0.5" order="2" side_tool="false" content_ui="combo" />
       <window_info id="Message" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="0" side_tool="false" content_ui="tabs" />
       <window_info id="Commander" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.4" sideWeight="0.5" order="0" side_tool="false" content_ui="tabs" />
-      <window_info id="Find" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="1" side_tool="false" content_ui="tabs" />
+      <window_info id="Hierarchy" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.25" sideWeight="0.5" order="2" side_tool="false" content_ui="combo" />
+      <window_info id="Messages" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.32876712" sideWeight="0.5" order="7" side_tool="false" content_ui="tabs" />
       <window_info id="Inspection" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.4" sideWeight="0.5" order="5" side_tool="false" content_ui="tabs" />
+      <window_info id="Find" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="1" side_tool="false" content_ui="tabs" />
     </layout>
     <layout-to-restore>
       <window_info id="Palette" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="0" side_tool="false" content_ui="tabs" />
@@ -748,31 +756,13 @@
       <provider selected="true" editor-type-id="text-editor">
         <state relative-caret-position="289">
           <caret line="17" column="10" lean-forward="false" selection-start-line="17" selection-start-column="10" selection-end-line="17" selection-end-column="10" />
-          <folding>
-            <marker date="1504604535000" expanded="true" signature="89:618" ph="..." />
-          </folding>
-        </state>
-      </provider>
-    </entry>
-    <entry file="file://$PROJECT_DIR$/src/main/java/main.java">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="362">
-          <caret line="25" column="35" lean-forward="false" selection-start-line="25" selection-start-column="35" selection-end-line="25" selection-end-column="35" />
-          <folding />
-        </state>
-      </provider>
-    </entry>
-    <entry file="file://$PROJECT_DIR$/src/main/java/test.java">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="220">
-          <caret line="13" column="32" lean-forward="true" selection-start-line="13" selection-start-column="32" selection-end-line="13" selection-end-column="32" />
           <folding />
         </state>
       </provider>
     </entry>
     <entry file="file://$PROJECT_DIR$/src/main/java/security.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="206">
+        <state relative-caret-position="306">
           <caret line="18" column="14" lean-forward="true" selection-start-line="18" selection-start-column="14" selection-end-line="18" selection-end-column="38" />
           <folding>
             <element signature="n#!!doc" expanded="true" />
@@ -781,11 +771,58 @@
         </state>
       </provider>
     </entry>
+    <entry file="file://$PROJECT_DIR$/src/main/java/test.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="221">
+          <caret line="13" column="32" lean-forward="true" selection-start-line="13" selection-start-column="32" selection-end-line="13" selection-end-column="32" />
+          <folding />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/README.md">
+      <provider selected="true" editor-type-id="split-provider[text-editor;markdown-preview-editor]">
+        <state split_layout="SPLIT">
+          <first_editor relative-caret-position="476">
+            <caret line="28" column="11" lean-forward="true" selection-start-line="28" selection-start-column="11" selection-end-line="28" selection-end-column="11" />
+            <folding />
+          </first_editor>
+          <second_editor />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/pom.xml">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="289">
+          <caret line="17" column="10" lean-forward="false" selection-start-line="17" selection-start-column="10" selection-end-line="17" selection-end-column="10" />
+          <folding />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/main/java/main.java" />
+    <entry file="file://$PROJECT_DIR$/src/main/java/test.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="221">
+          <caret line="13" column="32" lean-forward="false" selection-start-line="13" selection-start-column="32" selection-end-line="13" selection-end-column="32" />
+          <folding />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/main/java/security.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="306">
+          <caret line="18" column="14" lean-forward="false" selection-start-line="18" selection-start-column="14" selection-end-line="18" selection-end-column="38" />
+          <folding>
+            <element signature="n#!!doc" expanded="true" />
+            <element signature="imports" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
     <entry file="file://$PROJECT_DIR$/README.md">
       <provider selected="true" editor-type-id="split-provider[text-editor;markdown-preview-editor]">
         <state split_layout="SPLIT">
-          <first_editor relative-caret-position="116">
-            <caret line="21" column="8" lean-forward="false" selection-start-line="21" selection-start-column="8" selection-end-line="21" selection-end-column="8" />
+          <first_editor relative-caret-position="421">
+            <caret line="37" column="11" lean-forward="true" selection-start-line="37" selection-start-column="11" selection-end-line="37" selection-end-column="11" />
             <folding />
           </first_editor>
           <second_editor />
diff --git a/README.md b/README.md
index 8d6c64a..ee2b3c6 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,16 @@ Boolean ret = checkUrl.checkUrlWlist("http://test.joychou.me", urlWList);
 
 ## checkSSRF
 
-JAVA默认dns请求会有30s的缓存，所以默认不存在dns rebind问题。除非重新设置ttl为0。
+JAVA默认DNS请求会有30s的缓存，所以默认不存在DNS Rebind问题。除非重新设置TTL为0。
+
+如果有大佬能绕过，麻烦提个ISSUE或者PR。
+
+我自己测试，以下方法均没绕过。但是，用DNS Rebind方法在调试的时候，均可以测试成功，所以我怀疑设置TTL位0未成功。
+
+- DNS Rebind（手动设置JAVA的TTL为0）
+- 域名解析2个A记录地址（外网+内网）
+
+
 
 ### 验证逻辑