Fix high memory usage in retry middleware

integration/retry_test.go

@@ -0,0 +1,40 @@
+package integration
+
+import (
+	"net/http"
+	"os"
+	"time"
+
+	"github.com/containous/traefik/integration/try"
+	"github.com/go-check/check"
+	checker "github.com/vdemeester/shakers"
+)
+
+type RetrySuite struct{ BaseSuite }
+
+func (s *RetrySuite) SetUpSuite(c *check.C) {
+	s.createComposeProject(c, "retry")
+	s.composeProject.Start(c)
+}
+
+func (s *RetrySuite) TestRetry(c *check.C) {
+	whoamiEndpoint := s.composeProject.Container(c, "whoami").NetworkSettings.IPAddress
+	file := s.adaptFile(c, "fixtures/retry/simple.toml", struct {
+		WhoamiEndpoint string
+	}{whoamiEndpoint})
+	defer os.Remove(file)
+
+	cmd, display := s.traefikCmd(withConfigFile(file))
+	defer display(c)
+	err := cmd.Start()
+	c.Assert(err, checker.IsNil)
+	defer cmd.Process.Kill()
+
+	err = try.GetRequest("http://127.0.0.1:8080/api/providers", 60*time.Second, try.BodyContains("PathPrefix:/"))
+	c.Assert(err, checker.IsNil)
+
+	// This simulates a DialTimeout when connecting to the backend server.
+	response, err := http.Get("http://127.0.0.1:8000/")
+	c.Assert(err, checker.IsNil)
+	c.Assert(response.StatusCode, checker.Equals, http.StatusOK)
+}