gtsocial-umbx

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transport.go (923B)

      1 // Copyright 2014 The Go Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style
      3 // license that can be found in the LICENSE file.
      4 
      5 package internal
      6 
      7 import (
      8 	"context"
      9 	"net/http"
     10 )
     11 
     12 // HTTPClient is the context key to use with golang.org/x/net/context's
     13 // WithValue function to associate an *http.Client value with a context.
     14 var HTTPClient ContextKey
     15 
     16 // ContextKey is just an empty struct. It exists so HTTPClient can be
     17 // an immutable public variable with a unique type. It's immutable
     18 // because nobody else can create a ContextKey, being unexported.
     19 type ContextKey struct{}
     20 
     21 var appengineClientHook func(context.Context) *http.Client
     22 
     23 func ContextClient(ctx context.Context) *http.Client {
     24 	if ctx != nil {
     25 		if hc, ok := ctx.Value(HTTPClient).(*http.Client); ok {
     26 			return hc
     27 		}
     28 	}
     29 	if appengineClientHook != nil {
     30 		return appengineClientHook(ctx)
     31 	}
     32 	return http.DefaultClient
     33 }