/// tip

注意你傳給 `callback=` 的不是整個 router 本身（`invoices_callback_router`），而是它的屬性 `.routes`，也就是 `invoices_callback_router.routes`。

///

### 檢查文件 { #check-the-docs }

現在你可以啟動應用，並前往 [http://127.0.0.1:8000/docs](http://127.0.0.1:8000/docs)。

你會在文件中看到你的「路徑操作」包含一個「Callbacks」區塊，顯示「外部 API」應該長什麼樣子：

// This function may return negative numbers.
// If parsing fails or an integer overflow occurs, err will be set.
func (p *parser) parseNumeric(b []byte) int64 {
	// Check for base-256 (binary) format first.
	// If the first bit is set, then all following bits constitute a two's
	// complement encoded number in big-endian byte order.
	if len(b) > 0 && b[0]&0x80 != 0 {

          }
        }
      }

    // If the call's connection wasn't released, reuse it. We don't call connectionAcquired() here
    // because we already acquired it.
    if (call.connection != null) {
      check(toClose == null)
      return ReusePlan(candidate)
    }

    // The call's connection was released.
    toClose?.closeQuietly()
    call.eventListener.connectionReleased(call, candidate)

        failure (external/openssl/ssl/s23_clnt.c:770 0x7f2728a53ea0:0x00000000)
    at com.android.org.conscrypt.NativeCrypto.SSL_do_handshake(Native Method)
```

You can check a web server's configuration using [Qualys SSL Labs][qualys]. OkHttp's TLS
configuration history is [tracked here](../security/tls_configuration_history.md).

            } else {
                // Skip invalid bytes
                i++;
            }
        }

        return Arrays.copyOf(chars, charIndex);
    }

    /**
     * Check if storage has been destroyed
     */
    private void checkNotDestroyed() {
        if (destroyed) {
            throw new IllegalStateException("SecureCredentialStorage has been destroyed");
        }
    }

Perceba que você não está passando o roteador em si (`invoices_callback_router`) para `callback=`, mas o atributo `.routes`, como em `invoices_callback_router.routes`.

///

### Verifique a documentação { #check-the-docs }

Agora você pode iniciar seu aplicativo e ir para [http://127.0.0.1:8000/docs](http://127.0.0.1:8000/docs).

		}

		// Do the same for the headers.
		for key, value := range testCase.headers {
			req.Header.Set(key, value)
		}

		// parse form.
		req.ParseForm()

		// Check if it matches!
		err := doesPresignedSignatureMatch(payloadSHA256, req, testCase.region, serviceS3)
		if err != testCase.expected {

		}
	}

	r.bufferPool.New = func() []byte {
		return make([]byte, csvSplitSize+1024)
	}

	// Return first block
	next, nextErr := r.nextSplit(csvSplitSize, r.bufferPool.Get())
	// Check if first block is valid.
	if !utf8.Valid(next) {
		return errInvalidTextEncodingError()
	}

	// Create queue
	r.queue = make(chan *queueItem, runtime.GOMAXPROCS(0))

			Headers:      headers,
			ContentType:  "application/json",
			DeliveryMode: target.args.DeliveryMode,
			Body:         data,
		}); err != nil {
		return err
	}

	// check for publisher confirms only if its enabled
	if target.args.PublisherConfirms {
		confirmed := <-confirms
		if !confirmed.Ack {
			return fmt.Errorf("failed delivery of delivery tag: %d", confirmed.DeliveryTag)
		}
	}

    command = invocation_results.get('command')
    if command:
      line_str += command
    else:
      line_str += ('Couldn\'t parse the bazel command, '
                   'check inside the build log instead')
    line_str += f'\n{url}\n'
    print(line_str)
    i += 1


def main():
  args = parse_args()
  verbose = args.verbose