migrate to go modules from vndr

Signed-off-by: Tariq Ibrahim <tariq181290@gmail.com>

vendor/golang.org/x/net/context/ctxhttp/cancelreq.go

@@ -1,19 +0,0 @@
-// Copyright 2015 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build go1.5
-
-package ctxhttp
-
-import "net/http"
-
-func canceler(client *http.Client, req *http.Request) func() {
-	// TODO(djd): Respect any existing value of req.Cancel.
-	ch := make(chan struct{})
-	req.Cancel = ch
-
-	return func() {
-		close(ch)
-	}
-}

vendor/golang.org/x/net/context/ctxhttp/cancelreq_go14.go

@@ -1,23 +0,0 @@
-// Copyright 2015 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build !go1.5
-
-package ctxhttp
-
-import "net/http"
-
-type requestCanceler interface {
-	CancelRequest(*http.Request)
-}
-
-func canceler(client *http.Client, req *http.Request) func() {
-	rc, ok := client.Transport.(requestCanceler)
-	if !ok {
-		return func() {}
-	}
-	return func() {
-		rc.CancelRequest(req)
-	}
-}

vendor/golang.org/x/net/context/ctxhttp/ctxhttp.go

@@ -1,4 +1,4 @@
-// Copyright 2015 The Go Authors. All rights reserved.
+// Copyright 2016 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
@@ -6,84 +6,35 @@
 package ctxhttp // import "golang.org/x/net/context/ctxhttp"
 
 import (
+	"context"
 	"io"
 	"net/http"
 	"net/url"
 	"strings"
-
-	"golang.org/x/net/context"
 )
 
-func nop() {}
-
-var (
-	testHookContextDoneBeforeHeaders = nop
-	testHookDoReturned               = nop
-	testHookDidBodyClose             = nop
-)
-
-// Do sends an HTTP request with the provided http.Client and returns an HTTP response.
+// Do sends an HTTP request with the provided http.Client and returns
+// an HTTP response.
+//
 // If the client is nil, http.DefaultClient is used.
-// If the context is canceled or times out, ctx.Err() will be returned.
+//
+// The provided ctx must be non-nil. If it is canceled or times out,
+// ctx.Err() will be returned.
 func Do(ctx context.Context, client *http.Client, req *http.Request) (*http.Response, error) {
 	if client == nil {
 		client = http.DefaultClient
 	}
-
-	// Request cancelation changed in Go 1.5, see cancelreq.go and cancelreq_go14.go.
-	cancel := canceler(client, req)
-
-	type responseAndError struct {
-		resp *http.Response
-		err  error
-	}
-	result := make(chan responseAndError, 1)
-
-	// Make local copies of test hooks closed over by goroutines below.
-	// Prevents data races in tests.
-	testHookDoReturned := testHookDoReturned
-	testHookDidBodyClose := testHookDidBodyClose
-
-	go func() {
-		resp, err := client.Do(req)
-		testHookDoReturned()
-		result <- responseAndError{resp, err}
-	}()
-
-	var resp *http.Response
-
-	select {
-	case <-ctx.Done():
-		testHookContextDoneBeforeHeaders()
-		cancel()
-		// Clean up after the goroutine calling client.Do:
-		go func() {
-			if r := <-result; r.resp != nil {
-				testHookDidBodyClose()
-				r.resp.Body.Close()
-			}
-		}()
-		return nil, ctx.Err()
-	case r := <-result:
-		var err error
-		resp, err = r.resp, r.err
-		if err != nil {
-			return resp, err
-		}
-	}
-
-	c := make(chan struct{})
-	go func() {
+	resp, err := client.Do(req.WithContext(ctx))
+	// If we got an error, and the context has been canceled,
+	// the context's error is probably more useful.
+	if err != nil {
 		select {
 		case <-ctx.Done():
-			cancel()
-		case <-c:
-			// The response's Body is closed.
+			err = ctx.Err()
+		default:
 		}
-	}()
-	resp.Body = &notifyingReader{resp.Body, c}
-
-	return resp, nil
+	}
+	return resp, err
 }
 
 // Get issues a GET request via the Do function.
@@ -118,28 +69,3 @@ func Post(ctx context.Context, client *http.Client, url string, bodyType string,
 func PostForm(ctx context.Context, client *http.Client, url string, data url.Values) (*http.Response, error) {
 	return Post(ctx, client, url, "application/x-www-form-urlencoded", strings.NewReader(data.Encode()))
 }
-
-// notifyingReader is an io.ReadCloser that closes the notify channel after
-// Close is called or a Read fails on the underlying ReadCloser.
-type notifyingReader struct {
-	io.ReadCloser
-	notify chan<- struct{}
-}
-
-func (r *notifyingReader) Read(p []byte) (int, error) {
-	n, err := r.ReadCloser.Read(p)
-	if err != nil && r.notify != nil {
-		close(r.notify)
-		r.notify = nil
-	}
-	return n, err
-}
-
-func (r *notifyingReader) Close() error {
-	err := r.ReadCloser.Close()
-	if r.notify != nil {
-		close(r.notify)
-		r.notify = nil
-	}
-	return err
-}