forked from flynn-archive/strowger
/
http_test.go
291 lines (242 loc) · 8.14 KB
/
http_test.go
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package main
import (
"crypto/tls"
"crypto/x509"
"io/ioutil"
"net"
"net/http"
"net/http/httptest"
"code.google.com/p/go.net/websocket"
"github.com/flynn/strowger/types"
. "github.com/titanous/gocheck"
)
var httpClient = &http.Client{
Transport: &http.Transport{
TLSClientConfig: &tls.Config{ServerName: "example.com"},
},
}
// borrowed from net/http/httptest/server.go
// localhostCert is a PEM-encoded TLS cert with SAN IPs
// "127.0.0.1" and "[::1]", expiring at the last second of 2049 (the end
// of ASN.1 time).
// generated from src/pkg/crypto/tls:
// go run generate_cert.go --rsa-bits 512 --host 127.0.0.1,::1,example.com --ca --start-date "Jan 1 00:00:00 1970" --duration=1000000h
var localhostCert = []byte(`-----BEGIN CERTIFICATE-----
MIIBdzCCASOgAwIBAgIBADALBgkqhkiG9w0BAQUwEjEQMA4GA1UEChMHQWNtZSBD
bzAeFw03MDAxMDEwMDAwMDBaFw00OTEyMzEyMzU5NTlaMBIxEDAOBgNVBAoTB0Fj
bWUgQ28wWjALBgkqhkiG9w0BAQEDSwAwSAJBAN55NcYKZeInyTuhcCwFMhDHCmwa
IUSdtXdcbItRB/yfXGBhiex00IaLXQnSU+QZPRZWYqeTEbFSgihqi1PUDy8CAwEA
AaNoMGYwDgYDVR0PAQH/BAQDAgCkMBMGA1UdJQQMMAoGCCsGAQUFBwMBMA8GA1Ud
EwEB/wQFMAMBAf8wLgYDVR0RBCcwJYILZXhhbXBsZS5jb22HBH8AAAGHEAAAAAAA
AAAAAAAAAAAAAAEwCwYJKoZIhvcNAQEFA0EAAoQn/ytgqpiLcZu9XKbCJsJcvkgk
Se6AbGXgSlq+ZCEVo0qIwSgeBqmsJxUu7NCSOwVJLYNEBO2DtIxoYVk+MA==
-----END CERTIFICATE-----`)
// localhostKey is the private key for localhostCert.
var localhostKey = []byte(`-----BEGIN RSA PRIVATE KEY-----
MIIBPAIBAAJBAN55NcYKZeInyTuhcCwFMhDHCmwaIUSdtXdcbItRB/yfXGBhiex0
0IaLXQnSU+QZPRZWYqeTEbFSgihqi1PUDy8CAwEAAQJBAQdUx66rfh8sYsgfdcvV
NoafYpnEcB5s4m/vSVe6SU7dCK6eYec9f9wpT353ljhDUHq3EbmE4foNzJngh35d
AekCIQDhRQG5Li0Wj8TM4obOnnXUXf1jRv0UkzE9AHWLG5q3AwIhAPzSjpYUDjVW
MCUXgckTpKCuGwbJk7424Nb8bLzf3kllAiA5mUBgjfr/WtFSJdWcPQ4Zt9KTMNKD
EUO0ukpTwEIl6wIhAMbGqZK3zAAFdq8DD2jPx+UJXnh0rnOkZBzDtJ6/iN69AiEA
1Aq8MJgTaYsDQWyU/hDq5YkDJc9e9DSCvUIzqxQWMQE=
-----END RSA PRIVATE KEY-----`)
func init() {
pool := x509.NewCertPool()
pool.AppendCertsFromPEM(localhostCert)
httpClient.Transport.(*http.Transport).TLSClientConfig.RootCAs = pool
}
func httpTestHandler(id string) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
w.Write([]byte(id))
})
}
func newHTTPListener(etcd *fakeEtcd) (*HTTPListener, *fakeDiscoverd, error) {
discoverd := newFakeDiscoverd()
if etcd == nil {
etcd = newFakeEtcd()
}
l := NewHTTPListener("127.0.0.1:0", "127.0.0.1:0", nil, NewEtcdDataStore(etcd, "/strowger/http/"), discoverd)
return l, discoverd, l.Start()
}
// https://code.google.com/p/go/issues/detail?id=5381
func (s *S) TestIssue5381(c *C) {
srv := httptest.NewServer(httpTestHandler(""))
defer srv.Close()
l, discoverd, err := newHTTPListener(nil)
c.Assert(err, IsNil)
defer l.Close()
discoverd.Register("test", srv.Listener.Addr().String())
defer discoverd.UnregisterAll()
addHTTPRoute(c, l)
assertGet(c, "http://"+l.Addr, "example.com", "")
}
func (s *S) TestAddHTTPRoute(c *C) {
srv1 := httptest.NewServer(httpTestHandler("1"))
srv2 := httptest.NewServer(httpTestHandler("2"))
defer srv1.Close()
defer srv2.Close()
l, discoverd, err := newHTTPListener(nil)
c.Assert(err, IsNil)
defer l.Close()
discoverd.Register("test", srv1.Listener.Addr().String())
defer discoverd.UnregisterAll()
r := addHTTPRoute(c, l)
assertGet(c, "http://"+l.Addr, "example.com", "1")
assertGet(c, "https://"+l.TLSAddr, "example.com", "1")
discoverd.Unregister("test", srv1.Listener.Addr().String())
discoverd.Register("test", srv2.Listener.Addr().String())
// Close the connection we just used to trigger a new backend choice
httpClient.Transport.(*http.Transport).CloseIdleConnections()
assertGet(c, "http://"+l.Addr, "example.com", "2")
assertGet(c, "https://"+l.TLSAddr, "example.com", "2")
wait := waitForEvent(c, l, "remove", r.ID)
err = l.RemoveRoute(r.ID)
c.Assert(err, IsNil)
wait()
httpClient.Transport.(*http.Transport).CloseIdleConnections()
res, err := httpClient.Do(newReq("http://"+l.Addr, "example.com"))
c.Assert(err, IsNil)
c.Assert(res.StatusCode, Equals, 404)
res.Body.Close()
}
func newReq(url, host string) *http.Request {
req, _ := http.NewRequest("GET", url, nil)
req.Host = host
return req
}
func assertGet(c *C, url, host, expected string) *http.Cookie {
return assertGetCookie(c, url, host, expected, nil)
}
func assertGetCookie(c *C, url, host, expected string, cookie *http.Cookie) *http.Cookie {
req := newReq(url, host)
if cookie != nil {
req.AddCookie(cookie)
}
res, err := httpClient.Do(req)
c.Assert(err, IsNil)
c.Assert(res.StatusCode, Equals, 200)
data, err := ioutil.ReadAll(res.Body)
res.Body.Close()
c.Assert(err, IsNil)
c.Assert(string(data), Equals, expected)
for _, c := range res.Cookies() {
if c.Name == stickyCookie {
return c
}
}
return nil
}
func addHTTPRoute(c *C, l *HTTPListener) *strowger.Route {
wait := waitForEvent(c, l, "set", "")
r := (&strowger.HTTPRoute{
Domain: "example.com",
Service: "test",
TLSCert: string(localhostCert),
TLSKey: string(localhostKey),
}).ToRoute()
err := l.AddRoute(r)
c.Assert(err, IsNil)
wait()
return r
}
func addStickyHTTPRoute(c *C, l *HTTPListener) *strowger.Route {
wait := waitForEvent(c, l, "set", "")
r := (&strowger.HTTPRoute{
Domain: "example.com",
Service: "test",
Sticky: true,
}).ToRoute()
err := l.AddRoute(r)
c.Assert(err, IsNil)
wait()
return r
}
func (s *S) TestHTTPInitialSync(c *C) {
etcd := newFakeEtcd()
l, _, err := newHTTPListener(etcd)
addHTTPRoute(c, l)
c.Assert(err, IsNil)
l.Close()
srv := httptest.NewServer(httpTestHandler("1"))
defer srv.Close()
l, discoverd, err := newHTTPListener(etcd)
c.Assert(err, IsNil)
defer l.Close()
discoverd.Register("test", srv.Listener.Addr().String())
defer discoverd.UnregisterAll()
assertGet(c, "http://"+l.Addr, "example.com", "1")
assertGet(c, "https://"+l.TLSAddr, "example.com", "1")
}
// issue #26
func (s *S) TestHTTPServiceHandlerBackendConnectionClosed(c *C) {
srv := httptest.NewServer(httpTestHandler("1"))
l, discoverd, err := newHTTPListener(nil)
c.Assert(err, IsNil)
defer l.Close()
discoverd.Register("test", srv.Listener.Addr().String())
defer discoverd.UnregisterAll()
addHTTPRoute(c, l)
// a single request is allowed to successfully get issued
assertGet(c, "http://"+l.Addr, "example.com", "1")
// the backend server's connection gets closed, but strowger
// is able to recover
srv.CloseClientConnections()
assertGet(c, "http://"+l.Addr, "example.com", "1")
}
func (s *S) TestHTTPWebsocket(c *C) {
done := make(chan struct{})
srv := httptest.NewServer(
websocket.Handler(func(conn *websocket.Conn) {
_, err := conn.Write([]byte("1"))
c.Assert(err, IsNil)
res := make([]byte, 1)
_, err = conn.Read(res)
c.Assert(err, IsNil)
c.Assert(res[0], Equals, byte('2'))
close(done)
}),
)
l, discoverd, err := newHTTPListener(nil)
c.Assert(err, IsNil)
defer l.Close()
discoverd.Register("test", srv.Listener.Addr().String())
defer discoverd.UnregisterAll()
addHTTPRoute(c, l)
conn, err := net.Dial("tcp", l.Addr)
c.Assert(err, IsNil)
defer conn.Close()
conf, err := websocket.NewConfig("ws://example.com", "http://example.net")
c.Assert(err, IsNil)
wc, err := websocket.NewClient(conf, conn)
c.Assert(err, IsNil)
res := make([]byte, 1)
_, err = wc.Read(res)
c.Assert(err, IsNil)
c.Assert(res[0], Equals, byte('1'))
_, err = wc.Write([]byte("2"))
c.Assert(err, IsNil)
}
func (s *S) TestStickyHTTPRoute(c *C) {
srv1 := httptest.NewServer(httpTestHandler("1"))
srv2 := httptest.NewServer(httpTestHandler("2"))
defer srv2.Close()
l, discoverd, err := newHTTPListener(nil)
c.Assert(err, IsNil)
defer l.Close()
discoverd.Register("test", srv1.Listener.Addr().String())
defer discoverd.UnregisterAll()
addStickyHTTPRoute(c, l)
cookie := assertGet(c, "http://"+l.Addr, "example.com", "1")
discoverd.Register("test", srv2.Listener.Addr().String())
for i := 0; i < 10; i++ {
resCookie := assertGetCookie(c, "http://"+l.Addr, "example.com", "1", cookie)
c.Assert(resCookie, IsNil)
httpClient.Transport.(*http.Transport).CloseIdleConnections()
}
discoverd.Unregister("test", srv1.Listener.Addr().String())
for i := 0; i < 10; i++ {
resCookie := assertGetCookie(c, "http://"+l.Addr, "example.com", "2", cookie)
c.Assert(resCookie, Not(IsNil))
}
}