Example #1
0
	if redirect := resp.Header.Get("Location"); redirect != "" {
		resp.Header.Set("Location", t.rewriteURL(redirect, req.URL))
		return resp, nil
	}

	cType := resp.Header.Get("Content-Type")
	cType = strings.TrimSpace(strings.SplitN(cType, ";", 2)[0])
	if cType != "text/html" {
		// Do nothing, simply pass through
		return resp, nil
	}

	return t.rewriteResponse(req, resp)
}

var _ = util.RoundTripperWrapper(&Transport{})

func (rt *Transport) WrappedRoundTripper() http.RoundTripper {
	return rt.RoundTripper
}

// rewriteURL rewrites a single URL to go through the proxy, if the URL refers
// to the same host as sourceURL, which is the page on which the target URL
// occurred. If any error occurs (e.g. parsing), it returns targetURL.
func (t *Transport) rewriteURL(targetURL string, sourceURL *url.URL) string {
	url, err := url.Parse(targetURL)
	if err != nil {
		return targetURL
	}

	isDifferentHost := url.Host != "" && url.Host != sourceURL.Host
Example #2
0
// corsRemovingTransport is a wrapper for an internal transport. It removes CORS headers
// from the internal response.
type corsRemovingTransport struct {
	http.RoundTripper
}

func (p *corsRemovingTransport) RoundTrip(req *http.Request) (*http.Response, error) {
	resp, err := p.RoundTripper.RoundTrip(req)
	if err != nil {
		return nil, err
	}
	removeCORSHeaders(resp)
	return resp, nil
}

var _ = util.RoundTripperWrapper(&corsRemovingTransport{})

func (rt *corsRemovingTransport) WrappedRoundTripper() http.RoundTripper {
	return rt.RoundTripper
}

// removeCORSHeaders strip CORS headers sent from the backend
// This should be called on all responses before returning
func removeCORSHeaders(resp *http.Response) {
	resp.Header.Del("Access-Control-Allow-Credentials")
	resp.Header.Del("Access-Control-Allow-Headers")
	resp.Header.Del("Access-Control-Allow-Methods")
	resp.Header.Del("Access-Control-Allow-Origin")
}
Example #3
0
}

func NewUserAgentRoundTripper(agent string, rt http.RoundTripper) http.RoundTripper {
	return &userAgentRoundTripper{agent, rt}
}

func (rt *userAgentRoundTripper) RoundTrip(req *http.Request) (*http.Response, error) {
	if len(req.Header.Get("User-Agent")) != 0 {
		return rt.rt.RoundTrip(req)
	}
	req = cloneRequest(req)
	req.Header.Set("User-Agent", rt.agent)
	return rt.rt.RoundTrip(req)
}

var _ = util.RoundTripperWrapper(&userAgentRoundTripper{})

func (rt *userAgentRoundTripper) WrappedRoundTripper() http.RoundTripper {
	return rt.rt
}

type basicAuthRoundTripper struct {
	username string
	password string
	rt       http.RoundTripper
}

// NewBasicAuthRoundTripper will apply a BASIC auth authorization header to a request unless it has
// already been set.
func NewBasicAuthRoundTripper(username, password string, rt http.RoundTripper) http.RoundTripper {
	return &basicAuthRoundTripper{username, password, rt}
Example #4
0
		glog.Infof("%s %s %s in %d milliseconds", reqInfo.RequestVerb, reqInfo.RequestURL, reqInfo.ResponseStatus, reqInfo.Duration.Nanoseconds()/int64(time.Millisecond))
	}
	if rt.Levels.Has(ResponseStatus) {
		glog.Infof("Response Status: %s in %d milliseconds", reqInfo.ResponseStatus, reqInfo.Duration.Nanoseconds()/int64(time.Millisecond))
	}
	if rt.Levels.Has(ResponseHeaders) {
		glog.Infof("Response Headers:")
		for key, values := range reqInfo.ResponseHeaders {
			for _, value := range values {
				glog.Infof("    %s: %s", key, value)
			}
		}
	}

	return response, err
}

func (rt *DebuggingRoundTripper) CancelRequest(req *http.Request) {
	if canceler, ok := rt.delegatedRoundTripper.(requestCanceler); ok {
		canceler.CancelRequest(req)
	} else {
		glog.Errorf("CancelRequest not implemented")
	}
}

var _ = util.RoundTripperWrapper(&DebuggingRoundTripper{})

func (rt *DebuggingRoundTripper) WrappedRoundTripper() http.RoundTripper {
	return rt.delegatedRoundTripper
}
Example #5
0
	return &chaosrt{rt, notify, c}
}

// RoundTrip gives each ChaosFunc an opportunity to intercept the request. The first
// interceptor wins.
func (rt *chaosrt) RoundTrip(req *http.Request) (*http.Response, error) {
	for _, c := range rt.c {
		if intercept, resp, err := c.Intercept(req); intercept {
			rt.notify.OnChaos(req, c)
			return resp, err
		}
	}
	return rt.rt.RoundTrip(req)
}

var _ = util.RoundTripperWrapper(&chaosrt{})

func (rt *chaosrt) WrappedRoundTripper() http.RoundTripper {
	return rt.rt
}

// Seed represents a consistent stream of chaos.
type Seed struct {
	*rand.Rand
}

// NewSeed creates an object that assists in generating random chaotic events
// based on a deterministic seed.
func NewSeed(seed int64) Seed {
	return Seed{rand.New(rand.NewSource(seed))}
}