.url(url)
      .build();

  try (Response response = client.newCall(request).execute()) {
    return response.body().string();
  }
}
```


Post to a Server
----------------

This program posts data to a service. [Full source][post_example].

```java
public static final MediaType JSON = MediaType.get("application/json");

OkHttpClient client = new OkHttpClient();

    assertThat("http://host/a\u0000b".toHttpUrl().toUri())
      .isEqualTo(URI("http://host/a%00b"))
    assertThat("http://host/a\u0080b".toHttpUrl().toUri())
      .isEqualTo(URI("http://host/a%C2%80b"))
    assertThat("http://host/a\u009fb".toHttpUrl().toUri())
      .isEqualTo(URI("http://host/a%C2%9Fb"))
    // Percent-encoded in the query.
    assertThat("http://host/?a\u0000b".toHttpUrl().toUri())
      .isEqualTo(URI("http://host/?a%00b"))

        // Arrange
        String host = "testHost";
        when(nameServiceClient.getNbtAllByAddress(host)).thenThrow(new UnknownHostException("Host not found"));

        // Act & Assert
        assertThrows(UnknownHostException.class, () -> nameServiceClient.getNbtAllByAddress(host));
        verify(nameServiceClient, times(1)).getNbtAllByAddress(host);
    }

    @Test

                return new Tuple3[] { new Tuple3<>("Host", "example.com", "site1"), new Tuple3<>("X-Forwarded-Host", "test.com", "site2") };
            }
        });

        MockletHttpServletRequest request = getMockRequest();

        // No matching host header
        String key = virtualHostHelper.getVirtualHostKey();
        assertEquals("", key);

        // Matching host header
        request.addHeader("Host", "example.com");

    /** List of duplicate host rules for URL conversion */
    protected List<DuplicateHost> duplicateHostList;

    /**
     * Default constructor for DuplicateHostHelper.
     * Creates a new duplicate host helper instance.
     */
    public DuplicateHostHelper() {
        // Default constructor
    }

    /**
     * Initializes the duplicate host helper after construction.

  }

  @Override public Socket createSocket(InetAddress host, int port) throws IOException {
    Socket result = createSocket();

    try {
      result.connect(new InetSocketAddress(host, port));
    } catch (IOException e) {
      result.close();
      throw e;
    }
    return result;
  }

  @Override public Socket createSocket(

    }

    /**
     * Decodes the given host string using the specified encoding.
     *
     * @param host the host string to decode
     * @return the decoded host string
     */
    protected String decode(final String host) {
        if (host.indexOf('%') == -1) {
            return host;
        }
        try {
            return URLDecoder.decode(host, encoding);

        IdnDnsResolver resolver = new IdnDnsResolver();

        String host = "www.codelibs.org";
        String expected = "www.codelibs.org";
        assertEquals(expected, resolver.toAscii(host));

        host = "テスト.org";
        expected = "xn--zckzah.org";
        assertEquals(expected, resolver.toAscii(host));

        host = "xn--zckzah.org";
        expected = "xn--zckzah.org";

      .assertLogMatch(Regex("""dnsStart: ${url.host}"""))
      .assertLogMatch(Regex("""dnsEnd: \[.+]"""))
      .assertLogMatch(Regex("""connectStart: ${url.host}/.+ DIRECT"""))
      .assertLogMatch(Regex("""connectEnd: http/1.1"""))
      .assertLogMatch(
        Regex(
          """connectionAcquired: Connection\{${url.host}:\d+, proxy=DIRECT hostAddress=${url.host}/.+ cipherSuite=none protocol=http/1\.1\}""",
        ),

		{":0", "", "0"},
		{"server:https", "server", "443"},
		{"server:http", "server", "80"},
	}

	for _, testCase := range testCases {
		host, port := mustSplitHostPort(testCase.hostPort)
		if testCase.expectedHost != host {
			t.Fatalf("host: expected = %v, got = %v", testCase.expectedHost, host)
		}

		if testCase.expectedPort != port {
			t.Fatalf("port: expected = %v, got = %v", testCase.expectedPort, port)
		}
	}
}