diff --git a/lualib/http/httpc.lua b/lualib/http/httpc.lua
index a73d5710..823d33b5 100644
--- a/lualib/http/httpc.lua
+++ b/lualib/http/httpc.lua
@@ -14,10 +14,15 @@ local function request(fd, method, host, url, recvheader, header, content)
 		for k,v in pairs(header) do
 			header_content = string.format("%s%s:%s\r\n", header_content, k, v)
 		end
+		if header.host then
+			host = ""
+		end
+	else
+		host = string.format("host:%s\r\n",host)
 	end
 
 	if content then
-		local data = string.format("%s %s HTTP/1.1\r\nhost:%s\r\ncontent-length:%d\r\n%s\r\n%s", method, url, host, #content, header_content, content)
+		local data = string.format("%s %s HTTP/1.1\r\n%scontent-length:%d\r\n%s\r\n%s", method, url, host, #content, header_content, content)
 		write(data)
 	else
 		local request_header = string.format("%s %s HTTP/1.1\r\nhost:%s\r\ncontent-length:0\r\n%s\r\n", method, url, host, header_content)
diff --git a/test/testhttp.lua b/test/testhttp.lua
index 9fd0804c..cba1488a 100644
--- a/test/testhttp.lua
+++ b/test/testhttp.lua
@@ -1,16 +1,24 @@
 local skynet = require "skynet"
 local httpc = require "http.httpc"
+local dns = require "dns"
 
 skynet.start(function()
 	print("GET baidu.com")
-	local header = {}
-	local status, body = httpc.get("baidu.com", "/", header)
+	local respheader = {}
+	local status, body = httpc.get("baidu.com", "/", respheader)
 	print("[header] =====>")
-	for k,v in pairs(header) do
+	for k,v in pairs(respheader) do
 		print(k,v)
 	end
 	print("[body] =====>", status)
 	print(body)
 
+	local respheader = {}
+	dns.server()
+	local ip = dns.resolve "baidu.com"
+	print(string.format("GET %s (baidu.com)", ip))
+	local status, body = httpc.get("baidu.com", "/", respheader, { host = "baidu.com" })
+	print(status)
+
 	skynet.exit()
 end)