acds_handlers.c File Reference

ACIP Discovery Server (ACDS) packet handlers with O(1) dispatch. More...

Go to the source code of this file.

Data Structures
struct	acds_hash_entry_t
	Hash table entry for ACDS packet type to handler mapping. More...

Macros
#define	ACDS_HASH_SIZE   32
#define	ACDS_HANDLER_COUNT   11
#define	ACDS_HASH(type)   ((type) % ACDS_HASH_SIZE)

Typedefs
typedef asciichat_error_t(*	acip_acds_handler_func_t) (const void *payload, size_t payload_len, int client_socket, const char *client_ip, const acip_acds_callbacks_t *callbacks)

Functions
asciichat_error_t	acip_handle_acds_packet (acip_transport_t *transport, packet_type_t type, const void *payload, size_t payload_len, int client_socket, const char *client_ip, const acip_acds_callbacks_t *callbacks)

Detailed Description

ACIP Discovery Server (ACDS) packet handlers with O(1) dispatch.

Implements O(1) array-based packet dispatching for ascii-chat Discovery Server. Handles ACIP packets 100-150: session management, WebRTC signaling, discovery.

Author

Zachary Fogg me@zf.nosp@m.o.gg

Date

January 2026

Definition in file acds_handlers.c.

Macro Definition Documentation

ACDS_HANDLER_COUNT

#define ACDS_HANDLER_COUNT   11

Definition at line 31 of file acds_handlers.c.

ACDS_HASH

#define ACDS_HASH

(

type

)

((type) % ACDS_HASH_SIZE)

Definition at line 41 of file acds_handlers.c.

ACDS_HASH_SIZE

#define ACDS_HASH_SIZE   32

Definition at line 30 of file acds_handlers.c.

Typedef Documentation

acip_acds_handler_func_t

typedef asciichat_error_t(* acip_acds_handler_func_t) (const void *payload, size_t payload_len, int client_socket, const char *client_ip, const acip_acds_callbacks_t *callbacks)

Definition at line 26 of file acds_handlers.c.

Function Documentation

acip_handle_acds_packet()

asciichat_error_t acip_handle_acds_packet	(	acip_transport_t *	transport,
		packet_type_t	type,
		const void *	payload,
		size_t	payload_len,
		int	client_socket,
		const char *	client_ip,
		const acip_acds_callbacks_t *	callbacks
	)

Definition at line 118 of file acds_handlers.c.

                                                                                  {
  if (!callbacks) {
    return SET_ERRNO(ERROR_INVALID_PARAM, "Invalid callbacks");
  }
  (void)transport;
 
  // O(1) dispatch via hash table lookup
  int idx = acds_handler_hash_lookup(g_acds_handler_hash, type);
  if (idx < 0) {
    return SET_ERRNO(ERROR_INVALID_PARAM, "Unhandled ACDS packet type: %d from %s", type, client_ip);
  }
 
  return g_acds_handlers[idx](payload, payload_len, client_socket, client_ip, callbacks);
}

Referenced by acds_client_handler().