* [newFixedLengthSource(0)][newFixedLengthSource] and may skip reading and closing that source.
 */
class Http1ExchangeCodec(
  /** The client that configures this stream. May be null for HTTPS proxy tunnels. */
  private val client: OkHttpClient?,
  override val carrier: ExchangeCodec.Carrier,
  private val source: BufferedSource,
  private val sink: BufferedSink,
) : ExchangeCodec {
  private var state = STATE_IDLE

```
INFO: Sending request http://www.publicobject.com/helloworld.txt on Connection{www.publicobject.com:80, proxy=DIRECT hostAddress=54.187.32.157 cipherSuite=none protocol=http/1.1}
User-Agent: OkHttp Example
Host: www.publicobject.com
Connection: Keep-Alive
Accept-Encoding: gzip

/**
 * A denylist of failed routes to avoid when creating a new connection to a target address. This is
 * used so that OkHttp can learn from its mistakes: if there was a failure attempting to connect to
 * a specific IP address or proxy server, that failure is remembered and alternate routes are
 * preferred.
 */
class RouteDatabase {
  private val _failedRoutes = mutableSetOf<Route>()

  val failedRoutes: Set<Route>

👈 🌌, 🎧-🈸 🔜 💭 ⚙️ 👈 ➡ 🔡 🩺 🎚.

& 🎧-🈸 💪 ✔️ 🚮 👍 📌 🎧-🈸 & 🌐 🔜 👷 ☑, ↩️ FastAPI 🍵 🌐 👉 `root_path`Ⓜ 🔁.

  }

  @Test
  fun requestToStringRedactsSensitiveHeaders() {
    val headers =
      Headers.Builder()
        .add("content-length", "99")
        .add("authorization", "peanutbutter")
        .add("proxy-authorization", "chocolate")
        .add("cookie", "drink=coffee")
        .add("set-cookie", "accessory=sugar")
        .add("user-agent", "OkHttp")
        .build()
    val request =
      Request(

   * Returns the RFC 7235 authorization challenges appropriate for this response's code. If the
   * response code is 401 unauthorized, this returns the "WWW-Authenticate" challenges. If the
   * response code is 407 proxy unauthorized, this returns the "Proxy-Authenticate" challenges.
   * Otherwise this returns an empty list of challenges.
   *
   * If a challenge uses the `token68` variant instead of auth params, there is exactly one

	// Header indicates delete-marker replication status.
	MinIODeleteMarkerReplicationStatus = "X-Minio-Replication-DeleteMarker-Status"
	// Header indicates if its a GET/HEAD proxy request for active-active replication
	MinIOSourceProxyRequest = "X-Minio-Source-Proxy-Request"
	// Header indicates that this request is a replication request to create a REPLICA
	MinIOSourceReplicationRequest = "X-Minio-Source-Replication-Request"

# WSGI 포함하기 - Flask, Django 그 외

[서브 응용 프로그램 - 마운트](sub-applications.md){.internal-link target=_blank}, [프록시 뒤편에서](behind-a-proxy.md){.internal-link target=_blank}에서 보았듯이 WSGI 응용 프로그램들을 다음과 같이 마운트 할 수 있습니다.

`WSGIMiddleware`를 사용하여 WSGI 응용 프로그램(예: Flask, Django 등)을 감쌀 수 있습니다.

## `WSGIMiddleware` 사용하기

`WSGIMiddleware`를 불러와야 합니다.

그런 다음, WSGI(예: Flask) 응용 프로그램을 미들웨어로 포장합니다.

그 후, 해당 경로에 마운트합니다.

```Python hl_lines="2-3  23"

///

```Python hl_lines="10"
{!> ../../docs_src/header_params/tutorial002.py!}
```

////

/// warning | "Achtung"

Bevor Sie `convert_underscores` auf `False` setzen, bedenken Sie, dass manche HTTP-Proxys und Server die Verwendung von Headern mit Unterstrichen nicht erlauben.

///

## Doppelte Header

Es ist möglich, doppelte Header zu empfangen. Also den gleichen Header mit unterschiedlichen Werten.

        if (response == HTTP_UNAUTHORIZED) {
            authHeader = "WWW-Authenticate";
            authProperty = "Authorization";
        } else {
            authHeader = "Proxy-Authenticate";
            authProperty = "Proxy-Authorization";
        }
        String authorization = null;
        List methods = (List) getHeaderFields0().get(authHeader);
        if (methods == null) return null;