return trailers ?: EMPTY_HEADERS
  }

  override fun flushRequest() {
    sink.flush()
  }

  override fun finishRequest() {
    sink.flush()
  }

  /** Returns bytes of a request header for sending on an HTTP transport. */
  fun writeRequest(
    headers: Headers,
    requestLine: String,
  ) {
    check(state == STATE_IDLE) { "state: $state" }

	if err != nil {
		return nil, nil, fmt.Errorf("Drive %s: %w", export, err)
	}

	migrate := func(formatPath string, formatData []byte) ([]byte, fs.FileInfo, error) {
		if err = os.WriteFile(formatPath, formatData, 0o666); err != nil {
			return nil, nil, err
		}
		formatFi, err := Lstat(formatPath)
		if err != nil {
			return nil, nil, err
		}
		return formatData, formatFi, nil

```Python hl_lines="1  18"
{!../../docs_src/response_directly/tutorial002.py!}
```

### `HTMLResponse`

Takes some text or bytes and returns an HTML response, as you read above.

### `PlainTextResponse`

Takes some text or bytes and returns a plain text response.

```Python hl_lines="2  7  9"
{!../../docs_src/custom_response/tutorial005.py!}
```

### `JSONResponse`

from typing import Set, Tuple


def process_items(items_t: Tuple[int, int, str], items_s: Set[bytes]):

        return new String(c);
    }


    /**
     * 
     * @param src
     * @param srcIndex
     * @param size
     * @return hex string
     */
    public static String toHexString ( byte[] src, int srcIndex, int size ) {
        char[] c = new char[2 * size];
        for ( int i = 0, j = 0; i < size; i++ ) {
            c[ j++ ] = HEX_DIGITS[ ( src[ srcIndex + i ] >> 4 ) & 0x0F ];

from fastapi import FastAPI, File, UploadFile
from fastapi.responses import HTMLResponse

app = FastAPI()


@app.post("/files/")
async def create_files(files: list[bytes] = File()):
    return {"file_sizes": [len(file) for file in files]}


@app.post("/uploadfiles/")
async def create_upload_files(files: list[UploadFile]):
    return {"filenames": [file.filename for file in files]}


@app.get("/")
async def main():

      sink.flush()
    }
  }

  /** The maximum size of bytes that may be sent in a single call to [data]. */
  fun maxDataLength(): Int = maxFrameSize

  /**
   * `source.length` may be longer than the max length of the variant's data frame. Implementations
   * must send multiple frames as necessary.
   *
   * @param source the buffer to draw bytes from. May be null if byteCount is 0.

    assertEquals(written, counter.getCount());

    counter.write(0);
    written += 1;
    assertEquals(written, out.size());
    assertEquals(written, counter.getCount());

    byte[] data = new byte[10];
    counter.write(data);
    written += 10;
    assertEquals(written, out.size());
    assertEquals(written, counter.getCount());

    counter.write(data, 0, 5);
    written += 5;

        authMethod = null;
        InputStream errorStream = connection.getErrorStream();
        if (errorStream != null && errorStream.available() != 0) {
            int count;
            byte[] buf = new byte[1024];
            while ((count = errorStream.read(buf, 0, 1024)) != -1);
        }
        String authHeader;
        if (response == HTTP_UNAUTHORIZED) {
            authHeader = "WWW-Authenticate";

		}
	}
}

// Read - reads data from the connection using wrapped buffered reader.
func (c *DeadlineConn) Read(b []byte) (n int, err error) {
	c.setReadDeadline()
	n, err = c.Conn.Read(b)
	return n, err
}

// Write - writes data to the connection.
func (c *DeadlineConn) Write(b []byte) (n int, err error) {
	c.setWriteDeadline()
	n, err = c.Conn.Write(b)
	return n, err
}