immediately close req body

.gitignore

@@ -12,3 +12,4 @@
 
 # Project-local glide cache, RE: https://github.com/Masterminds/glide/issues/736
 .glide/
+.idea/

graphql.go

@@ -48,6 +48,9 @@ type Client struct {
 	httpClient       *http.Client
 	useMultipartForm bool
 
+	//closeReq will close the request body immediately allowing for reuse of client
+	closeReq bool
+
 	// Log is called with various debug information.
 	// To log to standard out, use:
 	//  client.Log = func(s string) { log.Println(s) }
@@ -114,6 +117,7 @@ func (c *Client) runWithJSON(ctx context.Context, req *Request, resp interface{}
 	if err != nil {
 		return err
 	}
+	r.Close = c.closeReq
 	r.Header.Set("Content-Type", "application/json; charset=utf-8")
 	r.Header.Set("Accept", "application/json; charset=utf-8")
 	for key, values := range req.Header {
@@ -184,6 +188,7 @@ func (c *Client) runWithPostFields(ctx context.Context, req *Request, resp inter
 	if err != nil {
 		return err
 	}
+	r.Close = c.closeReq
 	r.Header.Set("Content-Type", writer.FormDataContentType())
 	r.Header.Set("Accept", "application/json; charset=utf-8")
 	for key, values := range req.Header {
@@ -233,6 +238,12 @@ func UseMultipartForm() ClientOption {
 	}
 }
 
+//ImmediatelyCloseReqBody will close the req body immediately after each request body is ready
+func ImmediatelyCloseReqBody() ClientOption{
+	return func(client *Client) {
+		client.closeReq = true
+	}
+}
 // ClientOption are functions that are passed into NewClient to
 // modify the behaviour of the Client.
 type ClientOption func(*Client)

graphql_multipart_test.go

@@ -62,6 +62,33 @@ func TestDoUseMultipartForm(t *testing.T) {
 	is.Equal(calls, 1) // calls
 	is.Equal(responseData["something"], "yes")
 }
+func TestImmediatelyCloseReqBody(t *testing.T) {
+	is := is.New(t)
+	var calls int
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		calls++
+		is.Equal(r.Method, http.MethodPost)
+		query := r.FormValue("query")
+		is.Equal(query, `query {}`)
+		io.WriteString(w, `{
+			"data": {
+				"something": "yes"
+			}
+		}`)
+	}))
+	defer srv.Close()
+
+	ctx := context.Background()
+	client := NewClient(srv.URL, ImmediatelyCloseReqBody(), UseMultipartForm())
+
+	ctx, cancel := context.WithTimeout(ctx, 1*time.Second)
+	defer cancel()
+	var responseData map[string]interface{}
+	err := client.Run(ctx, &Request{q: "query {}"}, &responseData)
+	is.NoErr(err)
+	is.Equal(calls, 1) // calls
+	is.Equal(responseData["something"], "yes")
+}
 
 func TestDoErr(t *testing.T) {
 	is := is.New(t)