* `https://www.googleapis.com/auth/drive` is used by Google.

/// info

In OAuth2 a "scope" is just a string that declares a specific permission required.

It doesn't matter if it has other characters like `:` or if it is a URL.

Those details are implementation specific.

For OAuth2 they are just strings.

///

## Global view

              close(1010, "unexpected Sec-WebSocket-Extensions in response header")
            }
          }

          // Process all web socket messages.
          val name = "$okHttpName WebSocket ${request.url.redact()}"
          initReaderAndWriter(name, streams)
          loopReader(response)
        }

        override fun onFailure(
          call: Call,
          e: IOException,
        ) {

",lengthBadEnd:" characters",lengthTooLongStart:"The input value is longer than ",lengthTooShortStart:"The input value is shorter than ",notConfirmed:"Input values could not be confirmed",badDomain:"Incorrect domain value",badUrl:"The input value is not a correct URL",badCustomVal:"The input value is incorrect",andSpaces:" and spaces ",badInt:"The input value was not a correct number",badSecurityNumber:"Your social security number was incorrect",badUKVatAnswer:"Incorrect UK VAT Number",badUKNin:"Incorrect UK NI...

	}

	if authZPluginCfg.URL == nil {
		opaCfg, err := opa.LookupConfig(s[config.PolicyOPASubSys][config.Default],
			NewHTTPTransport(), xhttp.DrainBody)
		if err != nil {
			iamLogIf(ctx, fmt.Errorf("Unable to initialize AuthZPlugin from legacy OPA config: %w", err))
		} else {
			authZPluginCfg.URL = opaCfg.URL
			authZPluginCfg.AuthToken = opaCfg.AuthToken

/// info | Informação

No OAuth2, um "escopo" é apenas uma string que declara uma permissão específica necessária.

Não importa se ela contém outros caracteres como `:` ou se ela é uma URL.

Estes detalhes são específicos da implementação.

Para o OAuth2, eles são apenas strings.

///

## Visão global

# 设置和环境变量

在许多情况下，您的应用程序可能需要一些外部设置或配置，例如密钥、数据库凭据、电子邮件服务的凭据等等。

这些设置中的大多数是可变的（可以更改的），比如数据库的 URL。而且许多设置可能是敏感的，比如密钥。

因此，通常会将它们提供为由应用程序读取的环境变量。

## 环境变量

/// tip

如果您已经知道什么是"环境变量"以及如何使用它们，请随意跳到下面的下一节。

///

环境变量（也称为"env var"）是一种存在于 Python 代码之外、存在于操作系统中的变量，可以被您的 Python 代码（或其他程序）读取。

您可以在 shell 中创建和使用环境变量，而无需使用 Python：

//// tab | Linux、macOS、Windows Bash

<div class="termy">

```console

pkg net/url, method (*URL) Parse(string) (*URL, error)
pkg net/url, method (*URL) Query() Values
pkg net/url, method (*URL) RequestURI() string
pkg net/url, method (*URL) ResolveReference(*URL) *URL
pkg net/url, method (*URL) String() string
pkg net/url, method (*Userinfo) Password() (string, bool)
pkg net/url, method (*Userinfo) String() string
pkg net/url, method (*Userinfo) Username() string

	}

	// Query string.
	queryStr := req.Form.Encode()

	// Get canonical request.
	canonicalRequest := getCanonicalRequest(extractedSignedHeaders, payload, queryStr, req.URL.Path, req.Method)

	// Get string to sign from canonical request.
	stringToSign := getStringToSign(canonicalRequest, date, signV4Values.Credential.getScope())

	// Get hmac signing key.

/// info

In OAuth2 ist ein „Scope“ nur ein String, der eine bestimmte erforderliche Berechtigung deklariert.

Es spielt keine Rolle, ob er andere Zeichen wie `:` enthält oder ob es eine URL ist.

Diese Details sind implementierungsspezifisch.

Für OAuth2 sind es einfach nur Strings.

///

## Gesamtübersicht

		if !handlerFlags.Has(noObjLayerFlag) {
			objectAPI := newObjectLayerFn()
			if objectAPI == nil || globalNotificationSys == nil {
				writeErrorResponseJSON(r.Context(), w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL)
				return
			}
		}

		// Apply http tracing "middleware" based on presence of flag.
		var f2 http.HandlerFunc
		if handlerFlags.Has(traceAllFlag) {
			f2 = httpTraceAll(f)
		} else {