func NewWebSocketApp(urls []route.Uri, rPort uint16, mbusClient yagnats.NATSConn, delay time.Duration) *TestApp {
app := NewTestApp(urls, rPort, mbusClient, nil, "")
app.AddHandler("/", func(w http.ResponseWriter, r *http.Request) {
defer ginkgo.GinkgoRecover()
Expect(r.Header.Get("Upgrade")).To(Equal("websocket"))
Expect(r.Header.Get("Connection")).To(Equal("upgrade"))
conn, _, err := w.(http.Hijacker).Hijack()
x := test_util.NewHttpConn(conn)
resp := test_util.NewResponse(http.StatusSwitchingProtocols)
resp.Header.Set("Upgrade", "websocket")
resp.Header.Set("Connection", "upgrade")
time.Sleep(delay)
x.WriteResponse(resp)
Expect(err).ToNot(HaveOccurred())
x.CheckLine("hello from client")
x.WriteLine("hello from server")
})
return app
}
func runBackendInstance(ln net.Listener, handler connHandler) {
var tempDelay time.Duration // how long to sleep on accept failure
for {
conn, err := ln.Accept()
if err != nil {
if ne, ok := err.(net.Error); ok && ne.Temporary() {
if tempDelay == 0 {
tempDelay = 5 * time.Millisecond
} else {
tempDelay *= 2
}
if max := 1 * time.Second; tempDelay > max {
tempDelay = max
}
fmt.Printf("http: Accept error: %v; retrying in %v\n", err, tempDelay)
time.Sleep(tempDelay)
continue
}
break
}
go func() {
defer GinkgoRecover()
handler(test_util.NewHttpConn(conn))
}()
}
}
func dialProxy(proxyServer net.Listener) *test_util.HttpConn {
conn, err := net.Dial("tcp", proxyServer.Addr().String())
Ω(err).NotTo(HaveOccurred())
return test_util.NewHttpConn(conn)
}
It("websockets do not terminate", func() {
app := test.NewWebSocketApp(
[]route.Uri{"ws-app.vcap.me"},
config.Port,
mbusClient,
1*time.Second,
)
app.Listen()
Eventually(func() bool {
return appRegistered(registry, app)
}).Should(BeTrue())
conn, err := net.Dial("tcp", fmt.Sprintf("ws-app.vcap.me:%d", config.Port))
Ω(err).NotTo(HaveOccurred())
x := test_util.NewHttpConn(conn)
req := test_util.NewRequest("GET", "ws-app.vcap.me", "/chat", nil)
req.Header.Set("Upgrade", "websocket")
req.Header.Set("Connection", "upgrade")
x.WriteRequest(req)
resp, _ := x.ReadResponse()
Expect(resp.StatusCode).To(Equal(http.StatusSwitchingProtocols))
x.WriteLine("hello from client")
x.CheckLine("hello from server")
x.Close()
})