package web

import "cmd/go/internal/web"

Package web defines minimal helper routines for accessing HTTP/HTTPS resources without requiring external dependenicies on the net package.

If the cmd_go_bootstrap build tag is present, web avoids the use of the net package and returns errors for all network operations.

Index ¶

• func GetBytes(u *url.URL) ([]byte, error)
• func Join(u *url.URL, path string) *url.URL
• func OpenBrowser(url string) (opened bool)
• func Redacted(u *url.URL) string
• type HTTPError
• func (e *HTTPError) Error() string
• func (e *HTTPError) Is(target error) bool
• type Response
• func Get(security SecurityMode, u *url.URL) (*Response, error)
• func (r *Response) Err() error
• type SecurityMode

Functions ¶

func GetBytes ¶

func GetBytes(u *url.URL) ([]byte, error)

GetBytes returns the body of the requested resource, or an error if the response status was not http.StatusOK.

GetBytes is a convenience wrapper around Get and Response.Err.

func Join ¶

func Join(u *url.URL, path string) *url.URL

Join returns the result of adding the slash-separated path elements to the end of u's path.

func OpenBrowser ¶

func OpenBrowser(url string) (opened bool)

OpenBrowser attempts to open the requested URL in a web browser.

func Redacted ¶

func Redacted(u *url.URL) string

Redacted returns a redacted string form of the URL, suitable for printing in error messages. The string form replaces any non-empty password in the original URL with "[redacted]".

Types ¶

type HTTPError ¶

type HTTPError struct {
	URL        string // redacted
	Status     string
	StatusCode int
}

An HTTPError describes an HTTP error response (non-200 result).

func (*HTTPError) Error ¶

func (e *HTTPError) Error() string

func (*HTTPError) Is ¶

func (e *HTTPError) Is(target error) bool

type Response ¶

type Response struct {
	URL        string // redacted
	Status     string
	StatusCode int
	Header     map[string][]string
	Body       io.ReadCloser
}

func Get ¶

func Get(security SecurityMode, u *url.URL) (*Response, error)

Get returns the body of the HTTP or HTTPS resource specified at the given URL.

If the URL does not include an explicit scheme, Get first tries "https". If the server does not respond under that scheme and the security mode is Insecure, Get then tries "http". The URL included in the response indicates which scheme was actually used, and it is a redacted URL suitable for use in error messages.

For the "https" scheme only, credentials are attached using the cmd/go/internal/auth package. If the URL itself includes a username and password, it will not be attempted under the "http" scheme unless the security mode is Insecure.

Get returns a non-nil error only if the request did not receive a response under any applicable scheme. (A non-2xx response does not cause an error.)

func (*Response) Err ¶

func (r *Response) Err() error

Err returns an *HTTPError corresponding to the response r. It returns nil if the response r has StatusCode 200 or 0 (unset).

type SecurityMode ¶

type SecurityMode int

SecurityMode specifies whether a function should make network calls using insecure transports (eg, plain text HTTP). The zero value is "secure".

const (
	SecureOnly      SecurityMode = iota // Reject plain HTTP; validate HTTPS.
	DefaultSecurity                     // Allow plain HTTP if explicit; validate HTTPS.
	Insecure                            // Allow plain HTTP if not explicitly HTTPS; skip HTTPS validation.
)

Source Files ¶

api.go http.go url.go url_other.go