diff --git a/http/request.go b/http/request.go
index 42dd138..ee3499d 100644
--- a/http/request.go
+++ b/http/request.go
@@ -9,6 +9,10 @@ import (
 
 var devnull io.Writer = ioutil.Discard
 
+//Do will perform the request to the given url and method sending the
+//content of the given reader as the body and writing all the contents
+//of the response to the given writer. The reader and writer are
+//optional.
 func Do(method string, url string, r io.Reader, w io.Writer) error {
 	req, err := http.NewRequest(method, url, r)
 	if err != nil {