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path: root/server_test.go
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package goxy

import (
	"io"
	"io/ioutil"
	"log"
	"net/http"
	"net/http/httptest"
	"testing"
)

type Cannary string

const (
	cannary   = Cannary("hello from backend")
	dataFile  = "test.json"
	wwwServer = "localhost:8080"
	tlsServer = "localhost:8443"
	rpcServer = "localhost:8000"
)

var server Server

func init() {
	server, err := NewServer(dataFile, wwwServer, tlsServer, rpcServer)
	if err != nil {
		log.Fatal(err)
	}
	go server.Start()
}

func get(uri string) (string, error) {
	resp, err := http.Get(uri)
	if err != nil {
		return "", err
	}
	defer resp.Body.Close()
	body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		return "", err
	}
	return string(body), nil
}

func add(e Entry) error {
	client, err := DialRPC(rpcServer)
	if err != nil {
		return err
	}
	defer client.Close()
	return client.Call("GoXY.Add", e, nil)
}

func del(host string) error {
	client, err := DialRPC(rpcServer)
	if err != nil {
		return err
	}
	defer client.Close()
	return client.Call("GoXY.Del", host, nil)
}

func (c Cannary) ServeHTTP(w http.ResponseWriter, _ *http.Request) {
	io.WriteString(w, string(c))
}

func (c Cannary) Equal(s string) bool {
	return string(c) == s
}

func TestReverseProxy(t *testing.T) {
	// Backend server
	backServer := httptest.NewServer(cannary)
	defer backServer.Close()
	t.Log("start", backServer.URL)

	// Test HTTP proxy
	e := Entry{
		Host:     "http://" + wwwServer,
		Upstream: backServer.URL,
	}
	if err := add(e); err != nil {
		t.Error(err)
	}
	t.Log("add", e)

	resp, err := get("http://" + wwwServer)
	if err != nil {
		t.Error(err)
	}

	if !cannary.Equal(resp) {
		t.Errorf("got %q expected %q", resp, cannary)
	}

	if err := del(wwwServer); err != nil {
		t.Error(err)
	}
	t.Log("del", wwwServer)
}

func TestReverseProxyTLS(t *testing.T) {
}

func TestWebsocketProxy(t *testing.T) {
	/*
		// Websocket echo server
		wsServer := httptest.NewServer(websocket.Handler(func(ws *websocket.Conn) {
			io.Copy(ws, ws)
		}))
		defer wsServer.Close()
		t.Log("start ws server @", wsServer.URL)
	*/
}

/*
	// Test WebSocket proxy
	e = Entry{
		Host:     frontServer.URL,
		Upstream: wsServer.URL,
	}
	if err := rpcClient.Call("GoXY.Add", e, nil); err != nil {
		t.Error(err)
	}

	frontServer.Config.Handler = server.wwwServer.Handler

	ws, err := websocket.Dial("ws://"+frontURL.Host, "", "http://localhost")
	if err != nil {
		t.Error(err)
	}

	if _, err := ws.Write([]byte(cannary)); err != nil {
		t.Error(err)
	}
	msg := make([]byte, len(cannary))
	if _, err := ws.Read(msg); err != nil {
		t.Error(err)
	}
	if !bytes.Equal(msg, []byte(cannary)) {
		t.Error("got", string(msg), "expected", cannary)
	}

	rpcClient.Call("GoXY.Del", frontURL.Host, nil)
*/