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        assertNull(exceptions[0], "Add thread threw exception");
        assertNull(exceptions[1], "Clear thread threw exception");
    }

    /**
     * Test iteration over deleteUrlList while synchronized.
     * This simulates what happens in deleteDocuments() method.
     */
    @Test
    public void test_deleteUrlList_iteration() throws Exception {

   * AtomicIntegerFieldUpdater}, which will prevent us from selecting the {@code SafeAtomicHelper}
   * strategy.
   *
   * <p>Stashing this in a static field avoids loading it over and over again and speeds up test
   * execution significantly.
   */
  private static final ClassLoader NO_ATOMIC_FIELD_UPDATER =
      getClassLoader(
          ImmutableSet.of(

/**
 * [DNS over HTTPS implementation][doh_spec].
 *
 * > A DNS API client encodes a single DNS query into an HTTP request
 * > using either the HTTP GET or POST method and the other requirements
 * > of this section.  The DNS API server defines the URI used by the
 * > request through the use of a URI Template.
 *
 * [doh_spec]: https://tools.ietf.org/html/draft-ietf-doh-dns-over-https-13
 */

    App->>Client: Send Item 2
    App->>App: Produce Item 3
    Client->>Client: Process Item 2
    App->>Client: Send Item 3
    Client->>Client: Process Item 3
    Note over App: Keeps producing...
    Note over Client: Keeps consuming...
```

它甚至可以是無限串流，你可以一直持續傳送資料。

## JSON Lines { #json-lines }

在這些情況下，常見做法是傳送「**JSON Lines**」，這是一種每一行各包含一個 JSON 物件的格式。

public final class RequestTraceHelper {

    /**
     * Method that creates some informational string based on passed in {@link RequestTrace}. The contents of request
     * trace can literally be anything, but this class tries to cover "most common" cases that are happening in Maven.
     */
    public static String interpretTrace(boolean detailed, RequestTrace requestTrace) {
        while (requestTrace != null) {

// This input was created by taking the instruction productions in
// the old assembler's (8a's) grammar and hand-writing complete
// instructions for each rule, to guarantee we cover the same space.

#include "../../../../../runtime/textflag.h"

TEXT foo(SB), DUPOK|NOSPLIT, $0

// LTYPE1 nonrem	{ outcode(int($1), &$2); }
	SETCC	AX
	SETCC	foo+4(SB)

// LTYPE2 rimnon	{ outcode(int($1), &$2); }
	DIVB	AX
	DIVB	foo+4(SB)
	PUSHL	$foo+4(SB)

   * generated by {@code factory}. Most users should prefer {@link MultimapBuilder}, though a small
   * number of users will need this method to cover map or collection types that {@link
   * MultimapBuilder} does not support.
   *
   * <p><b>Warning: do not use</b> this method when the collections returned by {@code factory}

   * generated by {@code factory}. Most users should prefer {@link MultimapBuilder}, though a small
   * number of users will need this method to cover map or collection types that {@link
   * MultimapBuilder} does not support.
   *
   * <p><b>Warning: do not use</b> this method when the collections returned by {@code factory}

    assertThat(recorded.headers["Connection"]).isEqualTo("Upgrade, HTTP2-Settings")
    assertThat(recorded.headers["HTTP2-Settings"]).isNotNull()
    assertThat(recorded.headers["Upgrade"]).isEqualTo("h2c") // HTTP/2 over plaintext!
    assertThat(recorded.headers["User-Agent"]!!).matches(Regex("Java-http-client/.*"))
  }