evgeny
38c9f229bc
- u_async.c: process immediate_queue BEFORE epoll_wait in uasync_poll - stcp_link.c: defensive NULL etcp_conn/etcp_link in stcp_link_close - utun_instance.c: move stcp_server_list_destroy_all to Phase J (before ETCP), add deferred drain in both Phase J and L - stcp.h/c: STCP_HS_ENC_CLIENT 6→38, STCP_HS_ENC_SERVER 7→39, exchange ed25519_pubkey in both handshake directions - etcp_connections.c: copy peer_ed25519 from STCP to ETCP_CONN in etcp_link_enter_ready_tcp; guard link->etcp in tcp_link_close_cb - chat_sync.c: fix lk->conn NULL dereference for TCP links - test_stcp.c: update stcp_server_create/stcp_client_connect callsites - tools/chat_tcp_test: change transport udp→tcp
128 lines
3.7 KiB
C
128 lines
3.7 KiB
C
/*
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* control_server.h - Control Socket Server for ETCP Monitoring
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*
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* Provides TCP control interface for ETCP connection monitoring
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*/
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#ifndef CONTROL_SERVER_H
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#define CONTROL_SERVER_H
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#include "../tools/etcpmon/etcpmon_protocol.h"
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#include "../lib/socket_compat.h"
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#include <stdint.h>
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#include <stdio.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Forward declarations */
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struct UTUN_INSTANCE;
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struct UASYNC;
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struct TOPO_GROUP_NODE;
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struct ll_queue;
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/* Forward declaration */
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struct control_server;
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/* Client connection state */
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struct control_client {
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struct control_client* next; /* Linked list */
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struct control_server* server; /* Back pointer to server */
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socket_t fd; /* Client socket */
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void* socket_id; /* uasync socket ID */
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/* Receive buffer */
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uint8_t recv_buffer[ETCPMON_MAX_MSG_SIZE];
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uint16_t recv_len; /* Bytes received so far */
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/* Selected connection */
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uint64_t selected_peer_id; /* 0 = none selected */
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struct ll_queue* output_queue; /* Output queue for async sends */
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void* idle_timer; /* Client idle timeout */
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uint8_t subscribed_nodes; /* 1 = subscribed to node updates */
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uint8_t write_registered; /* 1 = write events registered in uasync */
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};
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/* Control server state */
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struct control_server {
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struct UTUN_INSTANCE* instance; /* Parent instance */
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struct UASYNC* ua; /* Async context */
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/* Listening socket */
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socket_t listen_fd;
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void* listen_socket_id; /* uasync socket ID */
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struct sockaddr_storage bind_addr; /* Bound address */
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/* Client connections */
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struct control_client* clients; /* Linked list of clients */
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uint32_t client_count; /* Number of connected clients */
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uint32_t max_clients; /* Maximum allowed clients */
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/* Log file */
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FILE* log_file;
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};
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/* ============================================================================
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* Public API
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* ============================================================================ */
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/* Initialize control server
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*
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* Creates listening socket and registers with uasync
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*
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* Parameters:
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* server - Server state structure to initialize
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* ua - uasync context for event handling
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* instance - Parent utun instance
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* bind_addr - Address to bind (from config control_sock)
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* max_clients - Maximum concurrent client connections
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*
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* Returns:
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* 0 on success, -1 on error
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*/
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int control_server_init(struct control_server* server,
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struct UASYNC* ua,
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struct UTUN_INSTANCE* instance,
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struct sockaddr_storage* bind_addr,
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uint32_t max_clients);
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/* Shutdown control server
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*
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* Closes all client connections and listening socket
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*
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* Parameters:
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* server - Server state to shutdown
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*/
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void control_server_shutdown(struct control_server* server);
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/* Process periodic updates
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*
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* Should be called periodically (e.g., from main loop) to send
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* metrics updates to clients that have selected connections
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*
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* Parameters:
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* server - Server state
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*/
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void control_server_process_updates(struct control_server* server);
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/* Get number of connected clients
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*
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* Parameters:
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* server - Server state
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*
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* Returns:
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* Number of connected clients
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*/
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uint32_t control_server_get_client_count(const struct control_server* server);
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void control_server_notify_node_change(struct control_server* server, struct TOPO_GROUP_NODE* node);
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void control_server_notify_node_removed(struct control_server* server, uint64_t node_id);
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#ifdef __cplusplus
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}
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#endif
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#endif /* CONTROL_SERVER_H */
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