vendor/google.golang.org/grpc/transport/go17.go

   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
  21 package transport
  22
  23 import (
  24         "context"
  25         "net"
  26
  27         "google.golang.org/grpc/codes"
  28
  29         netctx "golang.org/x/net/context"
  30 )
  31
  32 // dialContext connects to the address on the named network.
  33 func dialContext(ctx context.Context, network, address string) (net.Conn, error) {
  34         return (&net.Dialer{}).DialContext(ctx, network, address)
  35 }
  36
  37 // ContextErr converts the error from context package into a StreamError.
  38 func ContextErr(err error) StreamError {
  39         switch err {
  40         case context.DeadlineExceeded, netctx.DeadlineExceeded:
  41                 return streamErrorf(codes.DeadlineExceeded, "%v", err)
  42         case context.Canceled, netctx.Canceled:
  43                 return streamErrorf(codes.Canceled, "%v", err)
  44         }
  45         return streamErrorf(codes.Internal, "Unexpected error from context packet: %v", err)
  46 }