Function executeHandshake

src/cmap/connect.ts:190–209

(handshakeDoc: Document, handshakeOptions: CommandOptions)

  conn.established = true;

  async function executeHandshake(handshakeDoc: Document, handshakeOptions: CommandOptions) {
    try {
      const handshakeResponse = await conn.command(
        ns('admin.$cmd'),
        handshakeDoc,
        handshakeOptions
      );
      return handshakeResponse;
    } catch (error) {
      if (error instanceof MongoError) {
        error.addErrorLabel(MongoErrorLabel.HandshakeError);
      }
      // If we encounter a network error executing the initial handshake, apply backpressure labels.
      if (error instanceof MongoNetworkError) {
        applyBackpressureLabels(error);
      }

      throw error;
    }
  }
}

/**