In your WebSocket route you can `await` for messages and send messages.

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

You can receive and send binary, text, and JSON data.

## Try it { #try-it }

Put your code in a file `main.py` and then run your application:

<div class="termy">

```console
$ fastapi dev

	mountInfo, err := os.Open("/proc/self/mountinfo")
	if err != nil {
		return nil, err
	}
	defer mountInfo.Close()

	scanner := bufio.NewScanner(mountInfo)
	for scanner.Scan() {
		s := strings.Split(scanner.Text(), " ")
		if len(s) != 11 {
			return nil, errors.New("unsupported /proc/self/mountinfo format")
		}
		result[s[2]] = s[9]
	}

	if err := scanner.Err(); err != nil {
		return nil, err
	}

        // Test different attribute formats
        PrunedTag[] tags = PrunedTag.parse("input[type=text]");
        assertEquals(1, tags.length);
        assertTrue(tags[0].toString().contains("attrName=type"));
        assertTrue(tags[0].toString().contains("attrValue=text"));

        tags = PrunedTag.parse("div[data-test=value123]");
        assertEquals(1, tags.length);

import java.nio.file.Path;
import java.nio.file.Paths;
import java.text.SimpleDateFormat;
import java.util.Arrays;
import java.util.Date;
import java.util.HashSet;
import java.util.Properties;
import java.util.Set;
import java.util.stream.Stream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

import org.apache.commons.text.StringEscapeUtils;
import org.apache.logging.log4j.LogManager;

import assertk.assertions.isNull
import assertk.assertions.isTrue
import java.io.IOException
import java.net.CookieManager
import java.net.HttpURLConnection
import java.net.ResponseCache
import java.text.DateFormat
import java.text.SimpleDateFormat
import java.util.Date
import java.util.Locale
import java.util.TimeZone
import java.util.concurrent.TimeUnit
import java.util.concurrent.atomic.AtomicReference

sed;display:inline-block;font-style:normal;font-variant:normal;text-rendering:auto;line-height:1}.fa-lg{font-size:1.33333em;line-height:.75em;vertical-align:-.0667em}.fa-xs{font-size:.75em}.fa-sm{font-size:.875em}.fa-1x{font-size:1em}.fa-2x{font-size:2em}.fa-3x{font-size:3em}.fa-4x{font-size:4em}.fa-5x{font-size:5em}.fa-6x{font-size:6em}.fa-7x{font-size:7em}.fa-8x{font-size:8em}.fa-9x{font-size:9em}.fa-10x{font-size:10em}.fa-fw{text-align:center;width:1.25em}.fa-ul{list-style-type:none;margin-le...

  ':plugins:discovery-ec2',
  ':plugins:discovery-ec2:qa:amazon-ec2',
  ':plugins:discovery-gce',
  ':plugins:discovery-gce:qa:gce',
  ':plugins:ingest-attachment',
  ':plugins:mapper-annotated-text',
  ':plugins:mapper-murmur3',
  ':plugins:mapper-size',
  ':plugins:repository-azure',
  ':plugins:repository-gcs',
  ':plugins:repository-hdfs',
  ':plugins:repository-hdfs:hadoop-common',

    /**
     * This type is syntactically identical to "multipart/mixed", but the semantics are different.
     * In particular, in a digest, the default `Content-Type` value for a body part is changed from
     * "text/plain" to "message/rfc822".
     */
    @JvmField
    val DIGEST = "multipart/digest".toMediaType()

    /**
     * This type is syntactically identical to "multipart/mixed", but the semantics are different.

        return this.username;
    }

    /**
     * Returns the password in plain text or <code>null</code> if the raw password
     * hashes were used to construct this <code>NtlmPasswordAuthentication</code>
     * object which will be the case when NTLM HTTP Authentication is
     * used. There is no way to retrieve a users password in plain text unless
     * it is supplied by the user at runtime.
     *
     * @return the password

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.dict;

import java.io.File;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Map;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;