s7-server/dist/protocol/connection-manager.d.ts

TypeScript S7 PLC Server Simulator

/**
 * Connection Manager for S7 Protocol
 * Handles client connections, PDU negotiation, and connection state
 */
import { Socket } from 'net';
import { EventEmitter } from 'events';
import { ConnectionState, ConnectionParams } from './iso-tcp';
export interface ConnectionInfo {
    id: string;
    socket: Socket;
    address: string;
    port: number;
    state: ConnectionState;
    params: ConnectionParams;
    sequenceNumber: number;
    lastActivity: Date;
    negotiatedPDU: number;
}
export interface ClientInfo {
    id: string;
    address: string;
    port: number;
    connected: boolean;
    lastActivity: Date;
    negotiatedPDU: number;
}
export declare class ConnectionManager extends EventEmitter {
    private connections;
    private clientCounter;
    private maxClients;
    private maxPDUSize;
    constructor(maxClients?: number, maxPDUSize?: number);
    /**
     * Handle new client connection
     */
    handleNewConnection(socket: Socket): Promise<string | null>;
    /**
     * Handle ISO-TCP connection request
     */
    handleConnectionRequest(clientId: string, data: Buffer): Promise<boolean>;
    /**
     * Handle S7 PDU negotiation
     */
    handlePDUNegotiation(clientId: string, data: Buffer): Promise<boolean>;
    /**
     * Handle S7 data request
     */
    handleS7Request(clientId: string, data: Buffer): Promise<boolean>;
    /**
     * Send S7 response to client
     */
    sendS7Response(clientId: string, response: Buffer): Promise<boolean>;
    /**
     * Disconnect client
     */
    disconnectClient(clientId: string): Promise<void>;
    /**
     * Disconnect all clients
     */
    disconnectAllClients(): Promise<void>;
    /**
     * Get client information
     */
    getClientInfo(clientId: string): ClientInfo | null;
    /**
     * Get all connected clients
     */
    getAllClients(): ClientInfo[];
    /**
     * Get connected clients count
     */
    getClientsCount(): number;
    /**
     * Check if client is connected
     */
    isClientConnected(clientId: string): boolean;
    /**
     * Get client's negotiated PDU size
     */
    getClientPDUSize(clientId: string): number;
    /**
     * Setup socket event handlers
     */
    private setupSocketHandlers;
    /**
     * Handle incoming PDU
     */
    private handlePDU;
    /**
     * Handle client disconnect
     */
    private handleClientDisconnect;
    /**
     * Extract sequence number from address (simplified)
     */
    private extractSequenceFromAddress;
    /**
     * Cleanup inactive connections
     */
    cleanupInactiveConnections(timeoutMs?: number): void;
    /**
     * Update server configuration
     */
    updateConfig(maxClients: number, maxPDUSize: number): void;
    /**
     * Get connection by client ID
     */
    getConnection(clientId: string): ConnectionInfo | undefined;
    /**
     * Get connection statistics
     */
    getStatistics(): {
        totalConnections: number;
        connectedClients: number;
        maxClients: number;
        maxPDUSize: number;
    };
}
//# sourceMappingURL=connection-manager.d.ts.map