// Connection reset, network unreachable, etc. might be temporary
                return message.contains("connection reset") || message.contains("network unreachable")
                        || message.contains("host unreachable") || message.contains("timeout");
            }
            return true; // Generic socket errors might be recoverable
        }

        // Generic IO exceptions might be recoverable

<div class="termy">

```console
$ uvicorn main:app --host 0.0.0.0 --port 80

<span style="color: green;">INFO</span>:     Uvicorn running on http://0.0.0.0:80 (Press CTRL+C to quit)
```

</div>

/// note | Remarque

* [X-Forwarded-Proto](https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Forwarded-Proto)
* [X-Forwarded-Host](https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Forwarded-Host)

///

然而，因為**應用伺服器**並不知道自己在受信任的**代理**之後，預設情況下它不會信任這些標頭。

但你可以設定**應用伺服器**去信任由**代理**送來的「轉發」標頭。若你使用 FastAPI CLI，可以用 *CLI 參數* `--forwarded-allow-ips` 指定應信任哪些 IP 來的「轉發」標頭。

 * **Headers**: size
 * **HeldCertificate**: certificate, keyPair
 * **HttpLoggingInterceptor**: level
 * **HttpUrl**: encodedFragment, encodedPassword, encodedPath, encodedPathSegments, encodedQuery,
   encodedUsername, fragment, host, password, pathSegments, pathSize, port, query,
   queryParameterNames, querySize, scheme, username
 * **MockResponse**: headers, http2ErrorCode, socketPolicy, status, trailers

```

</div>

////

//// tab | `uvicorn`

If you prefer to use the `uvicorn` command directly:

<div class="termy">

```console
$ uvicorn main:app --host 0.0.0.0 --port 8080 --workers 4
<font color="#A6E22E">INFO</font>:     Uvicorn running on <b>http://0.0.0.0:8080</b> (Press CTRL+C to quit)

			return nil, config.Errorf("kafka 'brokers' cannot be empty")
		}
		for s := range strings.SplitSeq(kafkaBrokers, config.ValueSeparator) {
			var host *xnet.Host
			host, err = xnet.ParseHost(s)
			if err != nil {
				break
			}
			brokers = append(brokers, *host)
		}
		if err != nil {
			return nil, err
		}

		queueLimitEnv := target.EnvKafkaQueueLimit
		if k != config.Default {

            public String getIndexFieldContentLength() {
                return "content_length";
            }

            @Override
            public String getIndexFieldHost() {
                return "host";
            }

            @Override
            public String getIndexFieldLastModified() {
                return "last_modified";
            }

            @Override

            case 8: // Kerberos Time
                // DERGeneralizedTime derTime = KerberosUtil.readAs(tagged,
                // DERGeneralizedTime.class);
                break;
            case 9: // Host Addresses
                ASN1Sequence adressesSequence = ASN1Util.as(ASN1Sequence.class, tagged);
                Enumeration<?> adresses = adressesSequence.getObjects();
                while (adresses.hasMoreElements()) {

	if err != nil {
		result.Error = err.Error()
		return result
	}
	rp := cli.GetEndpointURL()
	reqURL := &url.URL{
		Scheme: rp.Scheme,
		Host:   rp.Host,
		Path:   reqPath,
	}
	result.Endpoint = rp.String()
	req, err := http.NewRequestWithContext(ctx, http.MethodPost, reqURL.String(), reader)
	if err != nil {
		result.Error = err.Error()
		return result

  // Find and return a function record added by its name.
  virtual core::RefCountPtr<FunctionRecord> FindRecord(
      const string& name) const = 0;

  // Return the ParsedName of Host CPU device.
  virtual const DeviceNameUtils::ParsedName& HostCPUParsedName() const = 0;
  virtual const string& HostCPUName() const = 0;

  // Configure soft device placement policy.