"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/28.0.1500.52 Safari/537.36");
        assertEquals(UserAgentType.CHROME, userAgentHelper.getUserAgentType());

        getMockRequest().addHeader("user-agent", "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:42.0) Gecko/20100101 Firefox/42.0");
        assertEquals(UserAgentType.CHROME, userAgentHelper.getUserAgentType());
    }

    @Test

fi

# Note: the profile can be viewed by visiting chrome://tracing in a Chrome browser.
# See https://docs.bazel.build/versions/main/skylark/performance.html#performance-profiling

Caching
=======

OkHttp implements an optional, off by default, Cache. OkHttp aims for RFC correct and
pragmatic caching behaviour, following common real-world browser like Firefox/Chrome and
server behaviour when ambiguous.

# Basic Usage

```kotlin
  private val client: OkHttpClient = OkHttpClient.Builder()
      .cache(Cache(
          directory = File(application.cacheDir, "http_cache"),
          // $0.05 worth of phone storage in 2020

    private static final String PLAY_SERVER_PATTERN_STR = "(play\\.core\\.server\\.NettyServer)";
    // https://github.com/gradle/gradle-private/issues/4255
    private static final String CHROME_PATTERN_STR = "(/usr/bin/google-chrome-for-testing)";
    private static final String JAVA_PROCESS_STACK_TRACES_MONITOR_PATTERN_STR = "(JavaProcessStackTracesMonitor\\.java)";
    private static ExecutionMode executionMode;

    assertThat(parse("http://username:@host/path"))
      .isEqualTo(parse("http://username@host/path"))
  }

  @Test
  fun passwordWithEmptyUsername() {
    // Chrome doesn't mind, but Firefox rejects URLs with empty usernames and non-empty passwords.
    assertThat(parse("http://:@host/path"))
      .isEqualTo(parse("http://host/path"))

      return Integer.valueOf(header)
    }
    return Integer.MAX_VALUE
  }

  companion object {
    /**
     * How many redirects and auth challenges should we attempt? Chrome follows 21 redirects; Firefox,
     * curl, and wget follow 20; Safari follows 16; and HTTP/1.0 recommends 5.
     */
    private const val MAX_FOLLOW_UPS = 20
  }

 *  limitations under the License.
 */
@file:Suppress("ktlint:standard:filename")

package okhttp3.internal

import okhttp3.Headers

/** This is the same as Chrome's limit. */
internal const val HEADER_LIMIT = 256 * 1024L

internal fun Headers.commonName(index: Int): String = namesAndValues.getOrNull(index * 2) ?: throw IndexOutOfBoundsException("name[$index]")

And, for example, you will probably see that there are multiple processes running the same browser program (Firefox, Chrome, Edge, etc). They normally run one process per tab, plus some other extra processes.

<img class="shadow" src="/img/deployment/concepts/image01.png">

---

            }
            break;
        case CHROME:
            if (isLocalFile) {
                url = url.replaceFirst("file:/+", systemProperties.getProperty("file.protocol.winlocal.chrome", "file://"));
            } else {
                url = url.replaceFirst("file:/+", systemProperties.getProperty("file.protocol.chrome", "file://"));
            }
            break;
        case SAFARI:

- 行程可以被你或作業系統終止（kill）。此時它就停止執行，無法再做任何事。
- 你電腦上執行的每個應用程式、每個視窗等，背後都有一些行程。而且在電腦開機時，通常會同時有許多行程在跑。
- 同一個程式可以同時有多個行程在執行。

如果你打開作業系統的「工作管理員」或「系統監控器」（或類似工具），就能看到許多正在執行的行程。

例如，你大概會看到同一個瀏覽器（Firefox、Chrome、Edge 等）會有多個行程在執行。它們通常每個分頁一個行程，外加其他一些額外行程。

<img class="shadow" src="/img/deployment/concepts/image01.png">

---

現在我們知道「行程」與「程式」的差異了，繼續談部署。

## 開機自動執行 { #running-on-startup }