1// +build go1.7
2
3/*
4 *
5 * Copyright 2016 gRPC authors.
6 *
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
10 *
11 *     http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 *
19 */
20
21package transport
22
23import (
24	"context"
25	"net"
26	"net/http"
27
28	"google.golang.org/grpc/codes"
29
30	netctx "golang.org/x/net/context"
31)
32
33// dialContext connects to the address on the named network.
34func dialContext(ctx context.Context, network, address string) (net.Conn, error) {
35	return (&net.Dialer{}).DialContext(ctx, network, address)
36}
37
38// ContextErr converts the error from context package into a StreamError.
39func ContextErr(err error) StreamError {
40	switch err {
41	case context.DeadlineExceeded, netctx.DeadlineExceeded:
42		return streamErrorf(codes.DeadlineExceeded, "%v", err)
43	case context.Canceled, netctx.Canceled:
44		return streamErrorf(codes.Canceled, "%v", err)
45	}
46	return streamErrorf(codes.Internal, "Unexpected error from context packet: %v", err)
47}
48
49// contextFromRequest returns a context from the HTTP Request.
50func contextFromRequest(r *http.Request) context.Context {
51	return r.Context()
52}
53