Request newYorkTimesRequest = new Request.Builder()
    .url("https://www.nytimes.com/")
    .build();
client.newCall(newYorkTimesRequest).enqueue(new Callback() {
  ...
});
```

Running this race over home WiFi shows the Times (`0002`) completes just slightly sooner than the Post (`0001`):

```
0001 https://www.washingtonpost.com/
0001 0.000 callStart
0002 https://www.nytimes.com/
0002 0.000 callStart

	//
	// The following are semantically equivalent:
	//  h.Xattrs[key] = value
	//  h.PAXRecords["SCHILY.xattr."+key] = value
	//
	// When Writer.WriteHeader is called, the contents of Xattrs will take
	// precedence over those in PAXRecords.
	//
	// Deprecated: Use PAXRecords instead.
	Xattrs map[string]string

	// PAXRecords is a map of PAX extended header records.
	//

            if (pos != -1) {
                buf.replace(pos, pos + 1, "ss");
            }
        }
        return new String(buf);
    }

    /**
     * An {@link Iterator} that iterates over {@link DateFormat} instances corresponding to the styles supported by the locale.
     *
     * @author koichik
     */
    protected static class DateFormatIterator implements Iterator<DateFormat> {

            if (pos != -1) {
                buf.replace(pos, pos + 1, "ss");
            }
        }
        return new String(buf);
    }

    /**
     * An {@link Iterator} that iterates over {@link DateFormat} instances corresponding to the styles supported by the locale.
     *
     * @author koichik
     */
    protected static class DateFormatIterator implements Iterator<DateFormat> {

   * java.util.NoSuchElementException NoSuchElementException}.
   *
   * @throws IllegalStateException if the instance is absent ({@link #isPresent} returns {@code
   *     false}); depending on this <i>specific</i> exception type (over the more general {@link
   *     RuntimeException}) is discouraged
   */
  public abstract T get();

  /**
   * Returns the contained instance if it is present; {@code defaultValue} otherwise. If no default

  abstract void setCountCheckReturnValue(E element, int count);

  /**
   * Call the {@code setCount()} method under test, but do not check its return value. Callers
   * should use this method over {@link #setCountCheckReturnValue(Object, int)} when they expect
   * {@code setCount()} to throw an exception, as checking the return value could produce an

      <groupId>org.apache.maven.wagon</groupId>
      <artifactId>wagon-file</artifactId>
    </dependency>

    <!-- CLI -->
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>jcl-over-slf4j</artifactId>
      <version>${slf4jVersion}</version>
      <scope>runtime</scope>
    </dependency>
    <dependency>
      <groupId>org.apache.maven.resolver</groupId>

Define a file parameter with a type of `UploadFile`:

{* ../../docs_src/request_files/tutorial001_an_py39.py hl[14] *}

Using `UploadFile` has several advantages over `bytes`:

* You don't have to use `File()` in the default value of the parameter.
* It uses a "spooled" file:
    * A file stored in memory up to a maximum size limit, and after passing this limit it will be stored in disk.

    Client->>Proxy: HTTPS Request<br/>Host: mysuperapp.com<br/>Path: /items

    Note over Proxy: Proxy adds forwarded headers

    Proxy->>Server: HTTP Request<br/>X-Forwarded-For: [client IP]<br/>X-Forwarded-Proto: https<br/>X-Forwarded-Host: mysuperapp.com<br/>Path: /items

    Note over Server: Server interprets headers<br/>(if --forwarded-allow-ips is set)

        System.arraycopy(Strings.getOEMBytes(this.scope, this.config), 0, dst, dstIndex, this.scope.length());
        dstIndex += this.scope.length();

        dst[dstIndex++] = (byte) 0x00;

        // now go over scope backwards converting '.' to label length

        int i = dstIndex - 2;
        final int e = i - this.scope.length();
        int c = 0;

        do {
            if (dst[i] == '.') {