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utils.go
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utils.go
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// Copyright 2015-2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License"). You may
// not use this file except in compliance with the License. A copy of the
// License is located at
//
// http://aws.amazon.com/apache2.0/
//
// or in the "license" file accompanying this file. This file 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 utils
import (
"net/http"
"net/http/httptest"
"time"
"github.com/gorilla/websocket"
)
// GetMockServer returns a mock websocket server that can be started up as TLS or not.
// TODO replace with gomock
func GetMockServer(closeWS <-chan []byte) (*httptest.Server, chan<- string, <-chan string, <-chan error, error) {
serverChan := make(chan string)
requestsChan := make(chan string)
errChan := make(chan error)
stopListen := make(chan bool)
upgrader := websocket.Upgrader{ReadBufferSize: 1024, WriteBufferSize: 1024}
handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
ws, err := upgrader.Upgrade(w, r, nil)
go func() {
ws.WriteControl(websocket.CloseMessage, <-closeWS, time.Now().Add(time.Second))
close(stopListen)
}()
if err != nil {
errChan <- err
}
go func() {
for {
select {
case <-stopListen:
return
default:
_, msg, err := ws.ReadMessage()
if err != nil {
errChan <- err
} else {
requestsChan <- string(msg)
}
}
}
}()
for str := range serverChan {
err := ws.WriteMessage(websocket.TextMessage, []byte(str))
if err != nil {
errChan <- err
}
}
})
server := httptest.NewUnstartedServer(handler)
return server, serverChan, requestsChan, errChan, nil
}