kubernetes/pkg/probe/http/request.go

// NewProbeRequest returns an http.Request suitable for use as a request for a
// probe.
func NewProbeRequest(url *url.URL, headers http.Header) (*http.Request, error) { … }

// NewRequestForHTTPGetAction returns an http.Request derived from httpGet.
// When httpGet.Host is empty, podIP will be used instead.
func NewRequestForHTTPGetAction(httpGet *v1.HTTPGetAction, container *v1.Container, podIP string, userAgentFragment string) (*http.Request, error) { … }

func newProbeRequest(url *url.URL, headers http.Header, userAgentFragment string) (*http.Request, error) { … }

func userAgent(purpose string) string { … }

// formatURL formats a URL from args.  For testability.
func formatURL(scheme string, host string, port int, path string) *url.URL { … }

// v1HeaderToHTTPHeader takes a list of HTTPHeader <name, value> string pairs
// and returns a populated string->[]string http.Header map.
func v1HeaderToHTTPHeader(headerList []v1.HTTPHeader) http.Header { … }