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13 General Public License for more details.
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22 * @file util/service_new.c
23 * @brief functions related to starting services (redesign)
24 * @author Christian Grothoff
27 #include "gnunet_util_lib.h"
28 #include "gnunet_protocols.h"
29 #include "gnunet_constants.h"
30 #include "gnunet_resolver_service.h"
34 * Creates the "main" function for a GNUnet service. You
35 * should almost always use the #GNUNET_SERVICE_MAIN macro
36 * instead of calling this function directly (except
37 * for ARM, which should call this function directly).
39 * The function will launch the service with the name @a service_name
40 * using the @a service_options to configure its shutdown
41 * behavior. Once the service is ready, the @a init_cb will be called
42 * for service-specific initialization. @a init_cb will be given the
43 * service handler which can be used to control the service's
44 * availability. When clients connect or disconnect, the respective
45 * @a connect_cb or @a disconnect_cb functions will be called. For
46 * messages received from the clients, the respective @a handlers will
47 * be invoked; for the closure of the handlers we use the return value
48 * from the @a connect_cb invocation of the respective client.
50 * Each handler MUST call #GNUNET_SERVICE_client_continue() after each
51 * message to receive further messages from this client. If
52 * #GNUNET_SERVICE_client_continue() is not called within a short
53 * time, a warning will be logged. If delays are expected, services
54 * should call #GNUNET_SERVICE_client_disable_continue_warning() to
55 * disable the warning.
57 * Clients sending invalid messages (based on @a handlers) will be
58 * dropped. Additionally, clients can be dropped at any time using
59 * #GNUNET_SERVICE_client_drop().
61 * @param argc number of command-line arguments in @a argv
62 * @param argv array of command-line arguments
63 * @param service_name name of the service to run
64 * @param options options controlling shutdown of the service
65 * @param service_init_cb function to call once the service is ready
66 * @param connect_cb function to call whenever a client connects
67 * @param disconnect_cb function to call whenever a client disconnects
68 * @param cls closure argument for @a service_init_cb, @a connect_cb and @a disconnect_cb
69 * @param handlers NULL-terminated array of message handlers for the service,
70 * the closure will be set to the value returned by
71 * the @a connect_cb for the respective connection
72 * @return 0 on success, non-zero on error
75 GNUNET_SERVICE_ruN_ (int argc,
77 const char *service_name,
78 enum GNUNET_SERVICE_Options options,
79 GNUNET_SERVICE_InitCallback service_init_cb,
80 GNUNET_SERVICE_ConnectHandler connect_cb,
81 GNUNET_SERVICE_DisconnectHandler disconnect_cb,
83 const struct GNUNET_MQ_MessageHandler *handlers)
85 GNUNET_break (0); // not implemented
91 * Suspend accepting connections from the listen socket temporarily.
92 * Resume activity using #GNUNET_SERVICE_resume.
94 * @param sh service to stop accepting connections.
97 GNUNET_SERVICE_suspend (struct GNUNET_SERVICE_Handle *sh)
99 GNUNET_break (0); // not implemented
104 * Resume accepting connections from the listen socket.
106 * @param sh service to resume accepting connections.
109 GNUNET_SERVICE_resume (struct GNUNET_SERVICE_Handle *sh)
111 GNUNET_break (0); // not implemented
116 * Continue receiving further messages from the given client.
117 * Must be called after each message received.
119 * @param c the client to continue receiving from
122 GNUNET_SERVICE_client_continue (struct GNUNET_SERVICE_Client *c)
124 GNUNET_break (0); // not implemented
129 * Disable the warning the server issues if a message is not
130 * acknowledged in a timely fashion. Use this call if a client is
131 * intentionally delayed for a while. Only applies to the current
134 * @param c client for which to disable the warning
137 GNUNET_SERVICE_client_disable_continue_warning (struct GNUNET_SERVICE_Client *c)
139 GNUNET_break (0); // not implemented
144 * Ask the server to disconnect from the given client. This is the
145 * same as returning #GNUNET_SYSERR within the check procedure when
146 * handling a message, wexcept that it allows dropping of a client even
147 * when not handling a message from that client. The `disconnect_cb`
148 * will be called on @a c even if the application closes the connection
149 * using this function.
151 * @param c client to disconnect now
154 GNUNET_SERVICE_client_drop (struct GNUNET_SERVICE_Client *c)
156 GNUNET_break (0); // not implemented
161 * Stop the listen socket and get ready to shutdown the server once
162 * only clients marked using #GNUNET_SERVER_client_mark_monitor are
165 * @param sh server to stop listening on
168 GNUNET_SERVICE_stop_listening (struct GNUNET_SERVICE_Handle *sh)
170 GNUNET_break (0); // not implemented
175 * Set the 'monitor' flag on this client. Clients which have been
176 * marked as 'monitors' won't prevent the server from shutting down
177 * once #GNUNET_SERVICE_stop_listening() has been invoked. The idea is
178 * that for "normal" clients we likely want to allow them to process
179 * their requests; however, monitor-clients are likely to 'never'
180 * disconnect during shutdown and thus will not be considered when
181 * determining if the server should continue to exist after
182 * shutdown has been triggered.
184 * @param c client to mark as a monitor
187 GNUNET_SERVICE_client_mark_monitor (struct GNUNET_SERVICE_Client *c)
189 GNUNET_break (0); // not implemented
194 * Set the persist option on this client. Indicates that the
195 * underlying socket or fd should never really be closed. Used for
196 * indicating process death.
198 * @param c client to persist the socket (never to be closed)
201 GNUNET_SERVICE_client_persist (struct GNUNET_SERVICE_Client *c)
203 GNUNET_break (0); // not implemented
208 /* end of service_new.c */