[go-nuts] HTTP response sent but never closed and ending with "HTTP/1.1 400 Bad Request"

Hello,

I wrote a really simple server :

-----------------------------------------------------------------------------------------------------
package main

import (
   "fmt"
   "net/http"
)

func main() {
   http.HandleFunc("/", root)

   fmt.Println("listening on port: 7777")
err := http.ListenAndServe(":7777", nil)
if err != nil {
   panic(err)
}
}

func root(res http.ResponseWriter, req *http.Request) {
fmt.Fprintf(res, "Hello")
}
-----------------------------------------------------------------------------------------------------------------------------

When I do "curl localhost:7777/" I see "hello" printed in the response so
all is ok. But when I play the same request using netcat:

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$> nc localhost 7777
GET / HTTP/1.1 #writing the request
manually
User-Agent: curl/7.24.0 (x86_64-apple-darwin12.0) libcurl/7.24.0
OpenSSL/0.9.8y zlib/1.2.5
Host: localhost:7777
Accept: */*

HTTP/1.1 200 OK #response headers
Content-Type: text/plain; charset=utf-8
Content-Length: 5
Date: Sun, 13 Oct 2013 18:42:55 GMT

Hello #here the
connection stays open just after "Hello", when I type return
HTTP/1.1 400 Bad Request # I see this and the
connection really close

------------------------------------------------------------------------------------------------------------------------------

What's happening here ? There is obviously something wrong but I can't tell
what.