C客户端用socket向php服务器发送数据，出错?

[hong78]

error.log
[Wed Jan 04 12:08:25 2012] [error] [client 192.168.0.43] client sent HTTP/1.1 request without hostname (see RFC2616 section 14.23): /default.php
access.log
127.0.0.1 - - [04/Jan/2012:15:21:19 +0800] "GET 127.0.0.1/default.php? HTTP/1.1" 400 226
code

	const   char*   host_name="127.0.0.1";
	char*   req= "GET 127.0.0.1/default.php? HTTP/1.1\r\n "
	"hostname:127.0.0.1"
	"Form: local\r\n " 
	"Content-Type: application/x-www-form-urlencoded\r\n " 
	"Content-Length: 226\r\n\r\n "

[hong78]

我的服务器端是直接用$_GET['xxx'],来取数据的。
URL：
http://127.0.0.1/default.php?xxx=1234

[hong78]

人呢？牛人们，来帮帮忙，焦头烂额啊！！