zyearn commented on a change in pull request #1529:
URL: https://github.com/apache/incubator-brpc/pull/1529#discussion_r698060138



##########
File path: docs/cn/http_client.md
##########
@@ -114,7 +114,9 @@ URL的一般形式如下图:
 
 若用户没有填且URL中包含host,比如http://www.foo.com/path,则http request中会包含"Host: 
www.foo.com"。
 
-若用户没有填且URL不包含host,比如"/index.html?name=value",则框架会以目标server的ip和port为Host,地址为10.46.188.39:8989的http
 server将会看到"Host: 10.46.188.39:8989"。
+若用户没有填且URL不包含host,比如"/index.html?name=value",但如果Channel初始化的地址包含域名,则框架会以域名作为Host,比如"http://www.foo.com",该http
 server将会看到"Host: www.foo.com"。如果地址是"http://www.foo.com:8989",则该http 
server将会看到"Host: www.foo.com"。
+

Review comment:
       最后这个Host是不是应该是"Host: www.foo.com:8989"?

##########
File path: docs/en/http_client.md
##########
@@ -115,7 +115,9 @@ If user already sets `Host` header(case insensitive), 
framework makes no change.
 
 If user does not set `Host` header and the URL has host, for example 
http://www.foo.com/path, the http request contains "Host: www.foo.com".
 
-If user does not set host header and the URL does not have host as well,  for 
example "/index.html?name=value", framework sets `Host` header with IP and port 
of the target server. A http server at 10.46.188.39:8989 should see `Host: 
10.46.188.39:8989`.
+If user does not set host header and the URL does not have host as well, for 
example "/index.html?name=value", but if the address initialized by the channel 
contains domain name. framework sets `Host` header with domain name of the 
target server. if this address is "http://www.foo.com";, this http server should 
see `Host: www.foo.com`. if this address is "http://www.foo.com:8989";, this 
http server should be see `Host: www.foo.com`.
+
+If user does not set host header and the URL does not have host as well,  for 
example "/index.html?name=value", and the address initialized by the channel 
doesn't contain domain name. framework sets `Host` header with IP and port of 
the target server. A http server at 10.46.188.39:8989 should see `Host: 
10.46.188.39:8989`.

Review comment:
       1. There is an extra space before 'for example'
   2. it should be ',' instead of '.' after 'if...'




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