telnet发送http请求
我使用telnet发送http请求，如下所示：
I am using telnet to send a http request , like this:
telnet> open 192.168.4.135 8087
Trying 192.168.4.135...
Connected to 192.168.4.135.
Escape character is '^]'.
POST /rpc/ HTTP/1.1
HOST:192.168.4.135:8087
Content-length:18
Content-type:application/x-http-form-urlencoded
action=loadrsctype
HTTP/1.1 200 OK
Date: Thu, 17 May 2012 03:52:53 GMT
Content-Length: 45
Content-Type: text/html; charset=ISO-8859-1
return=fail&error=Configuration doesn't existHTTP/1.1 400 Bad Request
Content-Type: text/html
Connection: close
Date: Thu, 17 May 2012 03:52:53 GMT
Content-Length: 94
<HTML><HEAD>
<TITLE>400 Bad Request</TITLE>
</HEAD><BODY>
<H1>Bad Request</H1>
</BODY></HTML>
Connection closed by foreign host.
响应代码为200，但为什么会出现这样的段落：
the response code is 200 , but why there is a paragraph like this :
HTTP/1.1 400 Bad Request
Content-Type: text/html
Connection: close
Date: Thu, 17 May 2012 03:52:53 GMT
Content-Length: 94
<HTML><HEAD>
<TITLE>400 Bad Request</TITLE>
</HEAD><BODY>
<H1>Bad Request</H1>
</BODY></HTML>
这是服务器或telnet本身的输出？如何避免显示这个？
This is the output of the server or telnet itself ? How to avoid to show this ?
- 更新 -
当我将HTTP / 1.1更改为http / 1.1时，我得到了正确的权利响应。
现在我想知道这是协议的要求还是与服务器的实现有关？
--update-- When i change "HTTP/1.1" to "http/1.1", i get the right response. Now i wonder wheather this is requirement of protocol or related with the implementation of the server?
在 HTTP 1.1 中，所有连接都被视为持久性除非另有声明。
In HTTP 1.1, all connections are considered persistent unless declared otherwise.
然后......我认为服务器正在接收一些虚假的换行符，并回复错误请求。
Then... I think the server is receiving some spurious newline char and reply with a Bad Request.
如果您使用 http / 1.1 而不是 HTTP / 1.1 可以使版本回退到版本 1.0 默认情况下不是持久的，并且在 200 OK 响应后它会丢弃连接。
If you use http/1.1 instead of HTTP/1.1 could make fallback the version to the version 1.0 that's not persistent by default and after the 200 OK response it drops the connection.