* When making an HTTPS connection through an HTTP proxy, the proxy may issue an authentication challenge. OkHttp will call the proxy [authenticator](https://square.github.io/okhttp/5.x/okhttp/okhttp3/-authenticator/) and try again.
 * When making TLS connections with multiple [connection specs](https://square.github.io/okhttp/5.x/okhttp/okhttp3/-connection-spec/), these are attempted in sequence until the TLS handshake succeeds.

  private static ImmutableList<URL> parseJavaClassPath() {
    ImmutableList.Builder<URL> urls = ImmutableList.builder();
    for (String entry : Splitter.on(PATH_SEPARATOR.value()).split(JAVA_CLASS_PATH.value())) {
      try {
        try {
          urls.add(new File(entry).toURI().toURL());
        } catch (SecurityException e) { // File.toURI checks to see if the file is a directory

            name = e.nextElement();
            if (name.startsWith("jcifs.")) {
                p.setProperty(name, config.getInitParameter(name));
            }
        }

        try {
            this.defaultDomain = p.getProperty("jcifs.smb.client.domain");
            this.domainController = p.getProperty("jcifs.http.domainController");
            if (this.domainController == null) {

      state == STATE_IDLE ||
        state == STATE_OPEN_REQUEST_BODY ||
        state == STATE_WRITING_REQUEST_BODY ||
        state == STATE_READ_RESPONSE_HEADERS,
    ) {
      "state: $state"
    }

    try {
      val statusLine = StatusLine.parse(headersReader.readLine())

      val responseBuilder =
        Response
          .Builder()
          .protocol(statusLine.protocol)
          .code(statusLine.code)

        // Setup mock SearchLogHelper that throws wrapped checked exception
        SearchLogHelper mockSearchLogHelper = new SearchLogHelper() {
            @Override
            public void storeSearchLog() {
                try {
                    throw new Exception("Checked exception");
                } catch (Exception e) {
                    throw new RuntimeException("Wrapped: " + e.getMessage(), e);
                }
            }

///

## 等待消息并发送消息 { #await-for-messages-and-send-messages }

在您的 WebSocket 路由中，您可以使用 `await` 等待消息并发送消息。

{* ../../docs_src/websockets_/tutorial001_py310.py hl[48:52] *}

您可以接收和发送二进制、文本和 JSON 数据。

## 尝试一下 { #try-it }

将代码放在 `main.py`，然后运行你的应用程序：

<div class="termy">

```console
$ fastapi dev

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

     * @return The parameter value, or the default value if not found.
     */
    protected <T> T getInitParameter(final String key, final T defaultValue, final Class<T> clazz) {
        if (initParamMap != null) {
            try {
                final Object paramValue = initParamMap.get(key);
                if (paramValue == null) {
                    return defaultValue;
                }

    }

    public String getRoleHint() {
        return roleHint;
    }

    /**
     * Creates a shallow copy of this requirement.
     */
    @Override
    public Requirement clone() {
        try {
            return (Requirement) super.clone();
        } catch (CloneNotSupportedException e) {
            throw new UnsupportedOperationException(e);
        }
    }

	return err.message
}

func errParquetParsingError(err error) *s3Error {
	return &s3Error{
		code:       "ParquetParsingError",
		message:    "Error parsing Parquet file. Please check the file and try again.",
		statusCode: 400,
		cause:      err,
	}

///

/// info

This page will teach you how to use **virtual environments** and how they work.

If you are ready to adopt a **tool that manages everything** for you (including installing Python), try [uv](https://github.com/astral-sh/uv).

///

## Create a Project { #create-a-project }

First, create a directory for your project.