Method send

src/utils/mcpWebSocketTransport.ts:173–199

* Sends a JSON-RPC message over the WebSocket connection.

(message: JSONRPCMessage)

   * Sends a JSON-RPC message over the WebSocket connection.
   */
  async send(message: JSONRPCMessage): Promise<void> {
    if (this.ws.readyState !== WS_OPEN) {
      logForDiagnosticsNoPII('error', 'mcp_websocket_send_not_opened')
      throw new Error('WebSocket is not open. Cannot send message.')
    }
    const json = jsonStringify(message)

    try {
      if (this.isBun) {
        // Native WebSocket.send() is synchronous (no callback)
        this.ws.send(json)
      } else {
        await new Promise<void>((resolve, reject) => {
          ;(this.ws as unknown as WsWebSocket).send(json, error => {
            if (error) {
              reject(error)
            } else {
              resolve()
            }
          })
        })
      }
    } catch (error) {
      this.handleError(error)
      throw error
    }
  }
}