Function build_request

src/websockets/legacy/handshake.py:16–34

Build a handshake request to send to the server. Update request headers passed in argument. Args: headers: Handshake request headers. Returns: ``key`` that must be passed to :func:`check_response`.

(headers: Headers)

def build_request(headers: Headers) -> str:
    """
    Build a handshake request to send to the server.

    Update request headers passed in argument.

    Args:
        headers: Handshake request headers.

    Returns:
        ``key`` that must be passed to :func:`check_response`.

    """
    key = generate_key()
    headers["Upgrade"] = "websocket"
    headers["Connection"] = "Upgrade"
    headers["Sec-WebSocket-Key"] = key
    headers["Sec-WebSocket-Version"] = "13"
    return key


def check_request(headers: Headers) -> str: