1// Copyright 2015 The etcd Authors
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7//     http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15package rafthttp
16
17import (
18	"errors"
19	"net/http"
20)
21
22func (t *roundTripperBlocker) RoundTrip(req *http.Request) (*http.Response, error) {
23	c := make(chan struct{}, 1)
24	t.mu.Lock()
25	t.cancel[req] = c
26	t.mu.Unlock()
27	ctx := req.Context()
28	select {
29	case <-t.unblockc:
30		return &http.Response{StatusCode: http.StatusNoContent, Body: &nopReadCloser{}}, nil
31	case <-ctx.Done():
32		return nil, errors.New("request canceled")
33	case <-c:
34		return nil, errors.New("request canceled")
35	}
36}
37