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// Copyright 2016 The etcd Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package tcpproxy
import (
"fmt"
"io/ioutil"
"net"
"net/http"
"net/http/httptest"
"net/url"
"testing"
)
func TestUserspaceProxy(t *testing.T) {
l, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
t.Fatal(err)
}
defer l.Close()
want := "hello proxy"
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
fmt.Fprint(w, want)
}))
defer ts.Close()
u, err := url.Parse(ts.URL)
if err != nil {
t.Fatal(err)
}
var port uint16
fmt.Sscanf(u.Port(), "%d", &port)
p := TCPProxy{
Listener: l,
Endpoints: []*net.SRV{{Target: u.Hostname(), Port: port}},
}
go p.Run()
defer p.Stop()
u.Host = l.Addr().String()
res, err := http.Get(u.String())
if err != nil {
t.Fatal(err)
}
got, gerr := ioutil.ReadAll(res.Body)
res.Body.Close()
if gerr != nil {
t.Fatal(gerr)
}
if string(got) != want {
t.Errorf("got = %s, want %s", got, want)
}
}
func TestUserspaceProxyPriority(t *testing.T) {
l, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
t.Fatal(err)
}
defer l.Close()
backends := []struct {
Payload string
Priority uint16
}{
{"hello proxy 1", 1},
{"hello proxy 2", 2},
{"hello proxy 3", 3},
}
var eps []*net.SRV
var front *url.URL
for _, b := range backends {
backend := b
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
fmt.Fprint(w, backend.Payload)
}))
defer ts.Close()
front, err = url.Parse(ts.URL)
if err != nil {
t.Fatal(err)
}
var port uint16
fmt.Sscanf(front.Port(), "%d", &port)
ep := &net.SRV{Target: front.Hostname(), Port: port, Priority: backend.Priority}
eps = append(eps, ep)
}
p := TCPProxy{
Listener: l,
Endpoints: eps,
}
go p.Run()
defer p.Stop()
front.Host = l.Addr().String()
res, err := http.Get(front.String())
if err != nil {
t.Fatal(err)
}
got, gerr := ioutil.ReadAll(res.Body)
res.Body.Close()
if gerr != nil {
t.Fatal(gerr)
}
want := "hello proxy 1"
if string(got) != want {
t.Errorf("got = %s, want %s", got, want)
}
}
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