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72 lines
2.1 KiB
Go
72 lines
2.1 KiB
Go
// Copyright 2016 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Package ctxhttp provides helper functions for performing context-aware HTTP requests.
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package ctxhttp // import "golang.org/x/net/context/ctxhttp"
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import (
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"context"
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"io"
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"net/http"
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"net/url"
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"strings"
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)
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// Do sends an HTTP request with the provided http.Client and returns
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// an HTTP response.
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//
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// If the client is nil, http.DefaultClient is used.
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//
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// The provided ctx must be non-nil. If it is canceled or times out,
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// ctx.Err() will be returned.
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func Do(ctx context.Context, client *http.Client, req *http.Request) (*http.Response, error) {
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if client == nil {
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client = http.DefaultClient
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}
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resp, err := client.Do(req.WithContext(ctx))
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// If we got an error, and the context has been canceled,
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// the context's error is probably more useful.
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if err != nil {
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select {
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case <-ctx.Done():
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err = ctx.Err()
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default:
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}
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}
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return resp, err
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}
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// Get issues a GET request via the Do function.
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func Get(ctx context.Context, client *http.Client, url string) (*http.Response, error) {
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req, err := http.NewRequest("GET", url, nil)
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if err != nil {
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return nil, err
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}
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return Do(ctx, client, req)
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}
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// Head issues a HEAD request via the Do function.
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func Head(ctx context.Context, client *http.Client, url string) (*http.Response, error) {
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req, err := http.NewRequest("HEAD", url, nil)
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if err != nil {
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return nil, err
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}
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return Do(ctx, client, req)
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}
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// Post issues a POST request via the Do function.
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func Post(ctx context.Context, client *http.Client, url string, bodyType string, body io.Reader) (*http.Response, error) {
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req, err := http.NewRequest("POST", url, body)
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if err != nil {
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return nil, err
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}
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req.Header.Set("Content-Type", bodyType)
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return Do(ctx, client, req)
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}
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// PostForm issues a POST request via the Do function.
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func PostForm(ctx context.Context, client *http.Client, url string, data url.Values) (*http.Response, error) {
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return Post(ctx, client, url, "application/x-www-form-urlencoded", strings.NewReader(data.Encode()))
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}
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