diff --git a/README.md b/README.md
index ecf027a..6451348 100644
--- a/README.md
+++ b/README.md
@@ -1962,17 +1962,19 @@ if($ok){
     header("ipconns:2000");  
     header("userrate:3000");  
     header("iprate:8000");  
-    header("UPSTREAM:http://127.0.0.1:3500?parent-type=tcp");  
+    header("outgoing:http://127.0.0.1:3500?parent-type=tcp");  
+    header("outgoing:1.1.1.1");  
     header("HTTP/1.1 204 No Content");  
 }
 ```  
 
 #### Explanation  
-Userconns: The maximum number of connections for the user, not limited to 0 or not set this header.  
-Ipcons: The maximum number of connections for the user IP, not limited to 0 or not set this header.  
-Userrate: User's single TCP connection rate limit, in bytes/second, is not limited to 0 or does not set this header.  
-Iprate: The single TCP connection rate limit of the user IP, in bytes/second, not limited to 0 or not set this header.  
-Upstream: The upstream used, not empty, or not set this header.  
+userconns: The maximum number of connections for the user, not limited to 0 or not set this header.  
+ipcons: The maximum number of connections for the user IP, not limited to 0 or not set this header.  
+userrate: User's single TCP connection rate limit, in bytes/second, is not limited to 0 or does not set this header.  
+iprate: The single TCP connection rate limit of the user IP, in bytes/second, not limited to 0 or not set this header.  
+upstream: The upstream used, not empty, or not set this header.  
+outgoing: The outgoing ip，this option only working which upstream is empty. And the IP must belong to the machine running proxy。
 
 #### Tips  
 1. By default, `--auth-url` is required to provide the user name and password. If you do not need the client to provide the username and password, and authenticate, you can add `--auth-nouser`. The visit will still access the authentication address `--auth-url` for authentication. Only the $user authentication username and the $pass authentication password received in the php interface are empty when client didn't send username and password.  
diff --git a/README_ZH.md b/README_ZH.md
index 9f25ffe..f4a0a89 100644
--- a/README_ZH.md
+++ b/README_ZH.md
@@ -2119,7 +2119,8 @@ if($ok){
     header("ipconns:2000");  
     header("userrate:3000");  
     header("iprate:8000");  
-    header("UPSTREAM:http://127.0.0.1:3500?parent-type=tcp");  
+    header("upstream:http://127.0.0.1:3500?parent-type=tcp");  
+    header("outgoing:1.1.1.1");  
     header("HTTP/1.1 204 No Content");  
 }
 ```  
@@ -2131,6 +2132,7 @@ ipconns：用户IP的最大连接数，不限制为0或者不设置这个头部
 userrate：用户的单个TCP连接速率限制，单位：字节/秒，不限制为0或者不设置这个头部。  
 iprate：用户IP的单个TCP连接速率限制，单位：字节/秒，不限制为0或者不设置这个头部。  
 upstream：使用的上级，没有为空，或者不设置这个头部。
+outgoing: 使用的出口IP，这个设置，只有在upstream为空的的时候才有效，这里设置的IP必须是proxy所在机器具有的IP。
 
 #### 提示
 
diff --git a/docs/manual/manual.md b/docs/manual/manual.md
index 442c98f..9ab1a2f 100644
--- a/docs/manual/manual.md
+++ b/docs/manual/manual.md
@@ -1750,17 +1750,19 @@ if($ok){
     header("ipconns:2000");  
     header("userrate:3000");  
     header("iprate:8000");  
-    header("UPSTREAM:http://127.0.0.1:3500?parent-type=tcp");  
+    header("outgoing:http://127.0.0.1:3500?parent-type=tcp");  
+    header("outgoing:1.1.1.1");  
     header("HTTP/1.1 204 No Content");  
 }
 ```  
 
 #### Explanation  
-Userconns: The maximum number of connections for the user, not limited to 0 or not set this header.  
-Ipcons: The maximum number of connections for the user IP, not limited to 0 or not set this header.  
-Userrate: User's single TCP connection rate limit, in bytes/second, is not limited to 0 or does not set this header.  
-Iprate: The single TCP connection rate limit of the user IP, in bytes/second, not limited to 0 or not set this header.  
-Upstream: The upstream used, not empty, or not set this header.  
+userconns: The maximum number of connections for the user, not limited to 0 or not set this header.  
+ipcons: The maximum number of connections for the user IP, not limited to 0 or not set this header.  
+userrate: User's single TCP connection rate limit, in bytes/second, is not limited to 0 or does not set this header.  
+iprate: The single TCP connection rate limit of the user IP, in bytes/second, not limited to 0 or not set this header.  
+upstream: The upstream used, not empty, or not set this header.  
+outgoing: The outgoing ip，this option only working which upstream is empty. And the IP must belong to the machine running proxy。
 
 #### Tips  
 1. By default, `--auth-url` is required to provide the user name and password. If you do not need the client to provide the username and password, and authenticate, you can add `--auth-nouser`. The visit will still access the authentication address `--auth-url` for authentication. Only the $user authentication username and the $pass authentication password received in the php interface are empty when client didn't send username and password.  
diff --git a/docs/manual/zh/manual.md b/docs/manual/zh/manual.md
index a5d3392..339f642 100644
--- a/docs/manual/zh/manual.md
+++ b/docs/manual/zh/manual.md
@@ -1893,7 +1893,8 @@ if($ok){
     header("ipconns:2000");  
     header("userrate:3000");  
     header("iprate:8000");  
-    header("UPSTREAM:http://127.0.0.1:3500?parent-type=tcp");  
+    header("upstream:http://127.0.0.1:3500?parent-type=tcp");  
+    header("outgoing:1.1.1.1");  
     header("HTTP/1.1 204 No Content");  
 }
 ```  
@@ -1905,6 +1906,7 @@ ipconns：用户IP的最大连接数，不限制为0或者不设置这个头部
 userrate：用户的单个TCP连接速率限制，单位：字节/秒，不限制为0或者不设置这个头部。  
 iprate：用户IP的单个TCP连接速率限制，单位：字节/秒，不限制为0或者不设置这个头部。  
 upstream：使用的上级，没有为空，或者不设置这个头部。
+outgoing: 使用的出口IP，这个设置，只有在upstream为空的的时候才有效，这里设置的IP必须是proxy所在机器具有的IP。
 
 #### 提示
 
diff --git a/docs/sitemap.xml b/docs/sitemap.xml
index 5ae94c9..9facd59 100644
--- a/docs/sitemap.xml
+++ b/docs/sitemap.xml
@@ -18,31 +18,31 @@
   </url>
   
   <url>
-    <loc>https://snail007.host900.com/goproxy/categories/</loc>
+    <loc>https://snail007.host900.com/goproxy/tags/cdn/</loc>
     <lastmod>2019-07-05T08:20:48+08:00</lastmod>
     <priority>0</priority>
   </url>
   
   <url>
-    <loc>https://snail007.host900.com/goproxy/</loc>
+    <loc>https://snail007.host900.com/goproxy/categories/</loc>
     <lastmod>2019-07-05T08:20:48+08:00</lastmod>
     <priority>0</priority>
   </url>
   
   <url>
-    <loc>https://snail007.host900.com/goproxy/posts/</loc>
+    <loc>https://snail007.host900.com/goproxy/</loc>
     <lastmod>2019-07-05T08:20:48+08:00</lastmod>
     <priority>0</priority>
   </url>
   
   <url>
-    <loc>https://snail007.host900.com/goproxy/tags/</loc>
+    <loc>https://snail007.host900.com/goproxy/posts/</loc>
     <lastmod>2019-07-05T08:20:48+08:00</lastmod>
     <priority>0</priority>
   </url>
   
   <url>
-    <loc>https://snail007.host900.com/goproxy/tags/cdn/</loc>
+    <loc>https://snail007.host900.com/goproxy/tags/</loc>
     <lastmod>2019-07-05T08:20:48+08:00</lastmod>
     <priority>0</priority>
   </url>
diff --git a/docs/tags/cdn/index.html b/docs/tags/cdn/index.html
index e9d7646..a7beca7 100644
--- a/docs/tags/cdn/index.html
+++ b/docs/tags/cdn/index.html
@@ -14,7 +14,7 @@
     <link href="//maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css" rel="stylesheet">
     <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
     <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/8.4/styles/solarized_dark.min.css">
-    <title>cdn - GOPROXY IN ACTION</title>
+    <title>CDN - GOPROXY IN ACTION</title>
     
     <link href="https://snail007.host900.com/goproxy/css/styles.css" rel="stylesheet">
     
@@ -77,7 +77,7 @@
 
     
     <header class="page-header">
-      <h1>cdn</h1>
+      <h1>CDN</h1>
     </header>
     
 
diff --git a/docs/tags/cdn/index.xml b/docs/tags/cdn/index.xml
index ab1a975..cb5d91a 100644
--- a/docs/tags/cdn/index.xml
+++ b/docs/tags/cdn/index.xml
@@ -1,9 +1,9 @@
 <?xml version="1.0" encoding="utf-8" standalone="yes" ?>
 <rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom">
   <channel>
-    <title>cdn on GOPROXY IN ACTION</title>
+    <title>CDN on GOPROXY IN ACTION</title>
     <link>https://snail007.host900.com/goproxy/tags/cdn/</link>
-    <description>Recent content in cdn on GOPROXY IN ACTION</description>
+    <description>Recent content in CDN on GOPROXY IN ACTION</description>
     <generator>Hugo -- gohugo.io</generator>
     <language>zh-CN</language>
     <lastBuildDate>Fri, 05 Jul 2019 08:20:48 +0800</lastBuildDate>
diff --git a/docs/tags/index.xml b/docs/tags/index.xml
index 311e588..cd84ea7 100644
--- a/docs/tags/index.xml
+++ b/docs/tags/index.xml
@@ -12,7 +12,7 @@
     
     
     <item>
-      <title>cdn</title>
+      <title>CDN</title>
       <link>https://snail007.host900.com/goproxy/tags/cdn/</link>
       <pubDate>Fri, 05 Jul 2019 08:20:48 +0800</pubDate>