blocky/helpertest/http.go

72 lines
1.5 KiB
Go

package helpertest
import (
"fmt"
"net"
"net/http"
"net/url"
"sync/atomic"
"github.com/onsi/ginkgo/v2"
)
type HTTPProxy struct {
Addr net.Addr
requestTarget atomic.Value // string: HTTP Host of latest request
}
// TestHTTPProxy returns a new HTTPProxy server.
//
// All requests return http.StatusNotImplemented.
func TestHTTPProxy() *HTTPProxy {
proxyListener, err := net.ListenTCP("tcp4", &net.TCPAddr{IP: net.ParseIP("127.0.0.1"), Port: 0})
if err != nil {
ginkgo.Fail(fmt.Sprintf("could not create HTTP proxy listener: %s", err))
}
proxy := &HTTPProxy{
Addr: proxyListener.Addr(),
}
proxySrv := http.Server{ //nolint:gosec
Addr: "127.0.0.1:0",
Handler: proxy,
}
go func() { _ = proxySrv.Serve(proxyListener) }()
ginkgo.DeferCleanup(proxySrv.Close)
return proxy
}
// URL returns the proxy's URL for use by clients.
func (p *HTTPProxy) URL() *url.URL {
return &url.URL{
Scheme: "http",
Host: p.Addr.String(),
}
}
// Check ReqURL has the right type signature for http.Transport.Proxy
var _ = http.Transport{Proxy: (*HTTPProxy)(nil).ReqURL}
func (p *HTTPProxy) ReqURL(*http.Request) (*url.URL, error) {
return p.URL(), nil
}
// RequestTarget returns the target of the last request.
func (p *HTTPProxy) RequestTarget() string {
val := p.requestTarget.Load()
if val == nil {
ginkgo.Fail(fmt.Sprintf("http proxy %s received no requests", p.Addr))
}
return val.(string)
}
func (p *HTTPProxy) ServeHTTP(w http.ResponseWriter, req *http.Request) {
p.requestTarget.Store(req.Host)
w.WriteHeader(http.StatusNotImplemented)
}