TsgcWebSocketClient › Events › OnHandshake
Fires when the client HTTP handshake is being built so custom headers can be added.
public event TsgcWSHandshakeEventHandler OnHandshake;
// delegate void TsgcWSHandshakeEventHandler(TsgcWSConnection Connection, out TStringList Headers)—
OnHandshake is raised on the client just before the HTTP Upgrade request is sent to the server. The Headers parameter is a TStringList containing the handshake lines that will be transmitted; add additional lines (for example a custom authorization token or a vendor-specific header) to have them included in the upgrade request. Standard WebSocket headers (Host, Upgrade, Connection, Sec-WebSocket-Key...) are already populated by the component and should not be duplicated.
void OnHandshake(TsgcWSConnection Connection, ref string Headers)
{
Headers = Headers + Environment.NewLine + "Client: sgcWebSockets";
}