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authorChristian Grothoff <christian@grothoff.org>2010-05-11 13:16:00 +0000
committerChristian Grothoff <christian@grothoff.org>2010-05-11 13:16:00 +0000
commitf6bad19e765e73886a1e5b6d32f0a7551e5757ba (patch)
treea8ab99a78b91a0756f4f6cfc210a2f0083956b35 /src
parentbd54a7aac7b1c0ae885568992fb25b816269ce89 (diff)
downloadgnunet-f6bad19e765e73886a1e5b6d32f0a7551e5757ba.tar.gz
gnunet-f6bad19e765e73886a1e5b6d32f0a7551e5757ba.zip
moving code where it belongs:
Diffstat (limited to 'src')
-rw-r--r--src/arm/arm_api.c206
-rw-r--r--src/arm/test_exponential_backoff.c211
-rw-r--r--src/include/gnunet_client_lib.h23
-rw-r--r--src/util/client.c202
-rw-r--r--src/util/test_service.c18
5 files changed, 418 insertions, 242 deletions
diff --git a/src/arm/arm_api.c b/src/arm/arm_api.c
index ee53fd87b..f15c9ab53 100644
--- a/src/arm/arm_api.c
+++ b/src/arm/arm_api.c
@@ -65,6 +65,206 @@ struct GNUNET_ARM_Handle
65 65
66 66
67/** 67/**
68 * Context for handling the shutdown of a service.
69 */
70struct ShutdownContext
71{
72 /**
73 * Scheduler to be used to call continuation
74 */
75 struct GNUNET_SCHEDULER_Handle *sched;
76 /**
77 * Connection to the service that is being shutdown.
78 */
79 struct GNUNET_CLIENT_Connection *sock;
80
81 /**
82 * Time allowed for shutdown to happen.
83 */
84 struct GNUNET_TIME_Absolute timeout;
85
86 /**
87 * Task set up to cancel the shutdown request on timeout.
88 */
89 GNUNET_SCHEDULER_TaskIdentifier cancel_task;
90
91 /**
92 * Task to call once shutdown complete
93 */
94 GNUNET_CLIENT_ShutdownTask cont;
95
96 /**
97 * Closure for shutdown continuation
98 */
99 void *cont_cls;
100
101 /**
102 * We received a confirmation that the service will shut down.
103 */
104 int confirmed;
105
106};
107
108/**
109 * Handler receiving response to service shutdown requests.
110 * First call with NULL: service misbehaving, or something.
111 * First call with GNUNET_MESSAGE_TYPE_ARM_SHUTDOWN_ACK:
112 * - service will shutdown
113 * Second call with NULL:
114 * - service has now really shut down.
115 *
116 * @param cls closure
117 * @param msg NULL, indicating socket closure.
118 */
119static void
120service_shutdown_handler (void *cls, const struct GNUNET_MessageHeader *msg)
121{
122 struct ShutdownContext *shutdown_ctx = cls;
123
124 if ((msg == NULL) && (shutdown_ctx->confirmed != GNUNET_YES))
125 {
126 /* Means the other side closed the connection and never confirmed a shutdown */
127 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
128 "Service handle shutdown before ACK!\n");
129 if (shutdown_ctx->cont != NULL)
130 shutdown_ctx->cont(shutdown_ctx->cont_cls, GNUNET_SYSERR);
131 GNUNET_SCHEDULER_cancel(shutdown_ctx->sched, shutdown_ctx->cancel_task);
132 GNUNET_CLIENT_disconnect (shutdown_ctx->sock, GNUNET_NO);
133 GNUNET_free(shutdown_ctx);
134 }
135 else if ((msg == NULL) && (shutdown_ctx->confirmed == GNUNET_YES))
136 {
137 GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
138 "Service shutdown complete.\n");
139 if (shutdown_ctx->cont != NULL)
140 shutdown_ctx->cont(shutdown_ctx->cont_cls, GNUNET_NO);
141
142 GNUNET_SCHEDULER_cancel(shutdown_ctx->sched, shutdown_ctx->cancel_task);
143 GNUNET_CLIENT_disconnect (shutdown_ctx->sock, GNUNET_NO);
144 GNUNET_free(shutdown_ctx);
145 }
146 else
147 {
148 GNUNET_assert(ntohs(msg->size) == sizeof(struct GNUNET_MessageHeader));
149 switch (ntohs(msg->type))
150 {
151 case GNUNET_MESSAGE_TYPE_ARM_SHUTDOWN_ACK:
152 GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
153 "Received confirmation for service shutdown.\n");
154 shutdown_ctx->confirmed = GNUNET_YES;
155 GNUNET_CLIENT_receive (shutdown_ctx->sock,
156 &service_shutdown_handler,
157 shutdown_ctx,
158 GNUNET_TIME_UNIT_FOREVER_REL);
159 break;
160 default: /* Fall through */
161 GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
162 "Service shutdown refused!\n");
163 if (shutdown_ctx->cont != NULL)
164 shutdown_ctx->cont(shutdown_ctx->cont_cls, GNUNET_YES);
165
166 GNUNET_SCHEDULER_cancel(shutdown_ctx->sched, shutdown_ctx->cancel_task);
167 GNUNET_CLIENT_disconnect (shutdown_ctx->sock, GNUNET_NO);
168 GNUNET_free(shutdown_ctx);
169 break;
170 }
171 }
172}
173
174/**
175 * Shutting down took too long, cancel receive and return error.
176 *
177 * @param cls closure
178 * @param tc context information (why was this task triggered now)
179 */
180void service_shutdown_cancel (void *cls,
181 const struct GNUNET_SCHEDULER_TaskContext * tc)
182{
183 struct ShutdownContext *shutdown_ctx = cls;
184 GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "service_shutdown_cancel called!\n");
185 shutdown_ctx->cont(shutdown_ctx->cont_cls, GNUNET_SYSERR);
186 GNUNET_CLIENT_disconnect (shutdown_ctx->sock, GNUNET_NO);
187 GNUNET_free(shutdown_ctx);
188}
189
190
191/**
192 * If possible, write a shutdown message to the target
193 * buffer and destroy the client connection.
194 *
195 * @param cls the "struct GNUNET_CLIENT_Connection" to destroy
196 * @param size number of bytes available in buf
197 * @param buf NULL on error, otherwise target buffer
198 * @return number of bytes written to buf
199 */
200static size_t
201write_shutdown (void *cls, size_t size, void *buf)
202{
203 struct GNUNET_MessageHeader *msg;
204 struct ShutdownContext *shutdown_ctx = cls;
205
206 if (size < sizeof (struct GNUNET_MessageHeader))
207 {
208 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
209 _("Failed to transmit shutdown request to client.\n"));
210 shutdown_ctx->cont(shutdown_ctx->cont_cls, GNUNET_SYSERR);
211 GNUNET_CLIENT_disconnect (shutdown_ctx->sock, GNUNET_NO);
212 GNUNET_free(shutdown_ctx);
213 return 0; /* client disconnected */
214 }
215
216 GNUNET_CLIENT_receive (shutdown_ctx->sock,
217 &service_shutdown_handler, shutdown_ctx,
218 GNUNET_TIME_UNIT_FOREVER_REL);
219 shutdown_ctx->cancel_task = GNUNET_SCHEDULER_add_delayed (shutdown_ctx->sched,
220 GNUNET_TIME_absolute_get_remaining(shutdown_ctx->timeout),
221 &service_shutdown_cancel,
222 shutdown_ctx);
223 msg = (struct GNUNET_MessageHeader *) buf;
224 msg->type = htons (GNUNET_MESSAGE_TYPE_ARM_SHUTDOWN);
225 msg->size = htons (sizeof (struct GNUNET_MessageHeader));
226 return sizeof (struct GNUNET_MessageHeader);
227}
228
229
230/**
231 * Request that the service should shutdown.
232 * Afterwards, the connection will automatically be
233 * disconnected. Hence the "sock" should not
234 * be used by the caller after this call
235 * (calling this function frees "sock" after a while).
236 *
237 * @param sched the scheduler to use for calling shutdown continuation
238 * @param sock the socket connected to the service
239 * @param timeout how long to wait before giving up on transmission
240 * @param cont continuation to call once the service is really down
241 * @param cont_cls closure for continuation
242 *
243 */
244static void
245arm_service_shutdown (struct GNUNET_SCHEDULER_Handle *sched,
246 struct GNUNET_CLIENT_Connection *sock,
247 struct GNUNET_TIME_Relative timeout,
248 GNUNET_CLIENT_ShutdownTask cont,
249 void *cont_cls)
250{
251 struct ShutdownContext *shutdown_ctx;
252 shutdown_ctx = GNUNET_malloc(sizeof(struct ShutdownContext));
253 shutdown_ctx->sched = sched;
254 shutdown_ctx->cont = cont;
255 shutdown_ctx->cont_cls = cont_cls;
256 shutdown_ctx->sock = sock;
257 shutdown_ctx->timeout = GNUNET_TIME_relative_to_absolute(timeout);
258 GNUNET_CLIENT_notify_transmit_ready (sock,
259 sizeof (struct
260 GNUNET_MessageHeader),
261 timeout,
262 GNUNET_NO,
263 &write_shutdown, shutdown_ctx);
264}
265
266
267/**
68 * Setup a context for communicating with ARM. Note that this 268 * Setup a context for communicating with ARM. Note that this
69 * can be done even if the ARM service is not yet running. 269 * can be done even if the ARM service is not yet running.
70 * 270 *
@@ -498,7 +698,7 @@ GNUNET_ARM_stop_service (struct GNUNET_ARM_Handle *h,
498 arm_shutdown_ctx = GNUNET_malloc(sizeof(struct ARM_ShutdownContext)); 698 arm_shutdown_ctx = GNUNET_malloc(sizeof(struct ARM_ShutdownContext));
499 arm_shutdown_ctx->cb = cb; 699 arm_shutdown_ctx->cb = cb;
500 arm_shutdown_ctx->cb_cls = cb_cls; 700 arm_shutdown_ctx->cb_cls = cb_cls;
501 GNUNET_CLIENT_service_shutdown (h->sched, h->client, timeout, &arm_shutdown_callback, arm_shutdown_ctx); 701 arm_service_shutdown (h->sched, h->client, timeout, &arm_shutdown_callback, arm_shutdown_ctx);
502 h->client = NULL; 702 h->client = NULL;
503 return; 703 return;
504 } 704 }
@@ -669,4 +869,8 @@ GNUNET_ARM_stop_services (const struct GNUNET_CONFIGURATION_Handle *cfg,
669} 869}
670 870
671 871
872
873
874
875
672/* end of arm_api.c */ 876/* end of arm_api.c */
diff --git a/src/arm/test_exponential_backoff.c b/src/arm/test_exponential_backoff.c
index 8657563fc..0ff0ebdad 100644
--- a/src/arm/test_exponential_backoff.c
+++ b/src/arm/test_exponential_backoff.c
@@ -26,6 +26,7 @@
26#include "gnunet_client_lib.h" 26#include "gnunet_client_lib.h"
27#include "gnunet_configuration_lib.h" 27#include "gnunet_configuration_lib.h"
28#include "gnunet_program_lib.h" 28#include "gnunet_program_lib.h"
29#include "gnunet_protocols.h"
29 30
30#define VERBOSE GNUNET_NO 31#define VERBOSE GNUNET_NO
31#define START_ARM GNUNET_YES 32#define START_ARM GNUNET_YES
@@ -49,6 +50,206 @@ static char *killLogFileName;
49#endif 50#endif
50 51
51 52
53/**
54 * Context for handling the shutdown of a service.
55 */
56struct ShutdownContext
57{
58 /**
59 * Scheduler to be used to call continuation
60 */
61 struct GNUNET_SCHEDULER_Handle *sched;
62 /**
63 * Connection to the service that is being shutdown.
64 */
65 struct GNUNET_CLIENT_Connection *sock;
66
67 /**
68 * Time allowed for shutdown to happen.
69 */
70 struct GNUNET_TIME_Absolute timeout;
71
72 /**
73 * Task set up to cancel the shutdown request on timeout.
74 */
75 GNUNET_SCHEDULER_TaskIdentifier cancel_task;
76
77 /**
78 * Task to call once shutdown complete
79 */
80 GNUNET_CLIENT_ShutdownTask cont;
81
82 /**
83 * Closure for shutdown continuation
84 */
85 void *cont_cls;
86
87 /**
88 * We received a confirmation that the service will shut down.
89 */
90 int confirmed;
91
92};
93
94/**
95 * Handler receiving response to service shutdown requests.
96 * First call with NULL: service misbehaving, or something.
97 * First call with GNUNET_MESSAGE_TYPE_ARM_SHUTDOWN_ACK:
98 * - service will shutdown
99 * Second call with NULL:
100 * - service has now really shut down.
101 *
102 * @param cls closure
103 * @param msg NULL, indicating socket closure.
104 */
105static void
106service_shutdown_handler (void *cls, const struct GNUNET_MessageHeader *msg)
107{
108 struct ShutdownContext *shutdown_ctx = cls;
109
110 if ((msg == NULL) && (shutdown_ctx->confirmed != GNUNET_YES))
111 {
112 /* Means the other side closed the connection and never confirmed a shutdown */
113 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
114 "Service handle shutdown before ACK!\n");
115 if (shutdown_ctx->cont != NULL)
116 shutdown_ctx->cont(shutdown_ctx->cont_cls, GNUNET_SYSERR);
117 GNUNET_SCHEDULER_cancel(shutdown_ctx->sched, shutdown_ctx->cancel_task);
118 GNUNET_CLIENT_disconnect (shutdown_ctx->sock, GNUNET_NO);
119 GNUNET_free(shutdown_ctx);
120 }
121 else if ((msg == NULL) && (shutdown_ctx->confirmed == GNUNET_YES))
122 {
123 GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
124 "Service shutdown complete.\n");
125 if (shutdown_ctx->cont != NULL)
126 shutdown_ctx->cont(shutdown_ctx->cont_cls, GNUNET_NO);
127
128 GNUNET_SCHEDULER_cancel(shutdown_ctx->sched, shutdown_ctx->cancel_task);
129 GNUNET_CLIENT_disconnect (shutdown_ctx->sock, GNUNET_NO);
130 GNUNET_free(shutdown_ctx);
131 }
132 else
133 {
134 GNUNET_assert(ntohs(msg->size) == sizeof(struct GNUNET_MessageHeader));
135 switch (ntohs(msg->type))
136 {
137 case GNUNET_MESSAGE_TYPE_ARM_SHUTDOWN_ACK:
138 GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
139 "Received confirmation for service shutdown.\n");
140 shutdown_ctx->confirmed = GNUNET_YES;
141 GNUNET_CLIENT_receive (shutdown_ctx->sock,
142 &service_shutdown_handler,
143 shutdown_ctx,
144 GNUNET_TIME_UNIT_FOREVER_REL);
145 break;
146 default: /* Fall through */
147 GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
148 "Service shutdown refused!\n");
149 if (shutdown_ctx->cont != NULL)
150 shutdown_ctx->cont(shutdown_ctx->cont_cls, GNUNET_YES);
151
152 GNUNET_SCHEDULER_cancel(shutdown_ctx->sched, shutdown_ctx->cancel_task);
153 GNUNET_CLIENT_disconnect (shutdown_ctx->sock, GNUNET_NO);
154 GNUNET_free(shutdown_ctx);
155 break;
156 }
157 }
158}
159
160/**
161 * Shutting down took too long, cancel receive and return error.
162 *
163 * @param cls closure
164 * @param tc context information (why was this task triggered now)
165 */
166void service_shutdown_cancel (void *cls,
167 const struct GNUNET_SCHEDULER_TaskContext * tc)
168{
169 struct ShutdownContext *shutdown_ctx = cls;
170 GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "service_shutdown_cancel called!\n");
171 shutdown_ctx->cont(shutdown_ctx->cont_cls, GNUNET_SYSERR);
172 GNUNET_CLIENT_disconnect (shutdown_ctx->sock, GNUNET_NO);
173 GNUNET_free(shutdown_ctx);
174}
175
176
177/**
178 * If possible, write a shutdown message to the target
179 * buffer and destroy the client connection.
180 *
181 * @param cls the "struct GNUNET_CLIENT_Connection" to destroy
182 * @param size number of bytes available in buf
183 * @param buf NULL on error, otherwise target buffer
184 * @return number of bytes written to buf
185 */
186static size_t
187write_shutdown (void *cls, size_t size, void *buf)
188{
189 struct GNUNET_MessageHeader *msg;
190 struct ShutdownContext *shutdown_ctx = cls;
191
192 if (size < sizeof (struct GNUNET_MessageHeader))
193 {
194 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
195 _("Failed to transmit shutdown request to client.\n"));
196 shutdown_ctx->cont(shutdown_ctx->cont_cls, GNUNET_SYSERR);
197 GNUNET_CLIENT_disconnect (shutdown_ctx->sock, GNUNET_NO);
198 GNUNET_free(shutdown_ctx);
199 return 0; /* client disconnected */
200 }
201
202 GNUNET_CLIENT_receive (shutdown_ctx->sock,
203 &service_shutdown_handler, shutdown_ctx,
204 GNUNET_TIME_UNIT_FOREVER_REL);
205 shutdown_ctx->cancel_task = GNUNET_SCHEDULER_add_delayed (shutdown_ctx->sched,
206 GNUNET_TIME_absolute_get_remaining(shutdown_ctx->timeout),
207 &service_shutdown_cancel,
208 shutdown_ctx);
209 msg = (struct GNUNET_MessageHeader *) buf;
210 msg->type = htons (GNUNET_MESSAGE_TYPE_ARM_SHUTDOWN);
211 msg->size = htons (sizeof (struct GNUNET_MessageHeader));
212 return sizeof (struct GNUNET_MessageHeader);
213}
214
215
216/**
217 * Request that the service should shutdown.
218 * Afterwards, the connection will automatically be
219 * disconnected. Hence the "sock" should not
220 * be used by the caller after this call
221 * (calling this function frees "sock" after a while).
222 *
223 * @param sched the scheduler to use for calling shutdown continuation
224 * @param sock the socket connected to the service
225 * @param timeout how long to wait before giving up on transmission
226 * @param cont continuation to call once the service is really down
227 * @param cont_cls closure for continuation
228 *
229 */
230static void
231arm_service_shutdown (struct GNUNET_SCHEDULER_Handle *sched,
232 struct GNUNET_CLIENT_Connection *sock,
233 struct GNUNET_TIME_Relative timeout,
234 GNUNET_CLIENT_ShutdownTask cont,
235 void *cont_cls)
236{
237 struct ShutdownContext *shutdown_ctx;
238 shutdown_ctx = GNUNET_malloc(sizeof(struct ShutdownContext));
239 shutdown_ctx->sched = sched;
240 shutdown_ctx->cont = cont;
241 shutdown_ctx->cont_cls = cont_cls;
242 shutdown_ctx->sock = sock;
243 shutdown_ctx->timeout = GNUNET_TIME_relative_to_absolute(timeout);
244 GNUNET_CLIENT_notify_transmit_ready (sock,
245 sizeof (struct
246 GNUNET_MessageHeader),
247 timeout,
248 GNUNET_NO,
249 &write_shutdown, shutdown_ctx);
250}
251
252
52static void 253static void
53arm_notify_stop (void *cls, int success) 254arm_notify_stop (void *cls, int success)
54{ 255{
@@ -141,6 +342,8 @@ shutdown_cont (void *cls, int reason)
141 &do_test, 342 &do_test,
142 NULL); 343 NULL);
143} 344}
345
346
144static void 347static void
145kill_task (void *cbData, 348kill_task (void *cbData,
146 const struct GNUNET_SCHEDULER_TaskContext *tc) 349 const struct GNUNET_SCHEDULER_TaskContext *tc)
@@ -178,10 +381,10 @@ kill_task (void *cbData,
178 } 381 }
179 382
180 /* Use the created connection to kill the doNothingTask */ 383 /* Use the created connection to kill the doNothingTask */
181 GNUNET_CLIENT_service_shutdown(sched, 384 arm_service_shutdown(sched,
182 doNothingConnection, 385 doNothingConnection,
183 TIMEOUT, 386 TIMEOUT,
184 &shutdown_cont, NULL); 387 &shutdown_cont, NULL);
185} 388}
186 389
187 390
diff --git a/src/include/gnunet_client_lib.h b/src/include/gnunet_client_lib.h
index 56f6915a4..49ccc6c6b 100644
--- a/src/include/gnunet_client_lib.h
+++ b/src/include/gnunet_client_lib.h
@@ -207,29 +207,6 @@ GNUNET_CLIENT_transmit_and_get_response (struct GNUNET_CLIENT_Connection *sock,
207 void *rn_cls); 207 void *rn_cls);
208 208
209 209
210
211/**
212 * Request that the service should shutdown.
213 * Afterwards, the connection will automatically be
214 * disconnected. Hence the "sock" shoud not
215 * be used by the caller after this call
216 * (calling this function frees "sock" after a while).
217 *
218 * @param sched the scheduler to use for calling shutdown continuation
219 * @param sock the socket connected to the service
220 * @param timeout how long to wait before giving up on transmission
221 * @param cont continuation to call once the service is really down
222 * @param cont_cls closure for continuation
223 *
224 */
225void
226GNUNET_CLIENT_service_shutdown (struct GNUNET_SCHEDULER_Handle *sched,
227 struct GNUNET_CLIENT_Connection *sock,
228 struct GNUNET_TIME_Relative timeout,
229 GNUNET_CLIENT_ShutdownTask cont,
230 void *cont_cls);
231
232
233/** 210/**
234 * Wait until the service is running. 211 * Wait until the service is running.
235 * 212 *
diff --git a/src/util/client.c b/src/util/client.c
index c87d239e6..8a93bae9b 100644
--- a/src/util/client.c
+++ b/src/util/client.c
@@ -137,47 +137,6 @@ struct TransmitGetResponseContext
137}; 137};
138 138
139/** 139/**
140 * Context for handling the shutdown of a service.
141 */
142struct ShutdownContext
143{
144 /**
145 * Scheduler to be used to call continuation
146 */
147 struct GNUNET_SCHEDULER_Handle *sched;
148 /**
149 * Connection to the service that is being shutdown.
150 */
151 struct GNUNET_CLIENT_Connection *sock;
152
153 /**
154 * Time allowed for shutdown to happen.
155 */
156 struct GNUNET_TIME_Absolute timeout;
157
158 /**
159 * Task set up to cancel the shutdown request on timeout.
160 */
161 GNUNET_SCHEDULER_TaskIdentifier cancel_task;
162
163 /**
164 * Task to call once shutdown complete
165 */
166 GNUNET_CLIENT_ShutdownTask cont;
167
168 /**
169 * Closure for shutdown continuation
170 */
171 void *cont_cls;
172
173 /**
174 * We received a confirmation that the service will shut down.
175 */
176 int confirmed;
177
178};
179
180/**
181 * Struct to refer to a GNUnet TCP connection. 140 * Struct to refer to a GNUnet TCP connection.
182 * This is more than just a socket because if the server 141 * This is more than just a socket because if the server
183 * drops the connection, the client automatically tries 142 * drops the connection, the client automatically tries
@@ -581,167 +540,6 @@ GNUNET_CLIENT_receive (struct GNUNET_CLIENT_Connection *sock,
581 540
582 541
583/** 542/**
584 * Handler receiving response to service shutdown requests.
585 * First call with NULL: service misbehaving, or something.
586 * First call with GNUNET_MESSAGE_TYPE_SHUTDOWN_ACK:
587 * - service will shutdown
588 * First call with GNUNET_MESSAGE_TYPE_SHUTDOWN_REFUSE:
589 * - service will not be stopped!
590 *
591 * Second call with NULL:
592 * - service has now really shut down.
593 *
594 * @param cls closure
595 * @param msg NULL, indicating socket closure.
596 */
597static void
598service_shutdown_handler (void *cls, const struct GNUNET_MessageHeader *msg)
599{
600 struct ShutdownContext *shutdown_ctx = cls;
601
602 if ((msg == NULL) && (shutdown_ctx->confirmed != GNUNET_YES))
603 {
604 /* Means the other side closed the connection and never confirmed a shutdown */
605 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
606 "Service handle shutdown before ACK!\n");
607 if (shutdown_ctx->cont != NULL)
608 shutdown_ctx->cont(shutdown_ctx->cont_cls, GNUNET_SYSERR);
609 GNUNET_SCHEDULER_cancel(shutdown_ctx->sched, shutdown_ctx->cancel_task);
610 GNUNET_CLIENT_disconnect (shutdown_ctx->sock, GNUNET_NO);
611 GNUNET_free(shutdown_ctx);
612 }
613 else if ((msg == NULL) && (shutdown_ctx->confirmed == GNUNET_YES))
614 {
615 GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
616 "Service shutdown complete.\n");
617 if (shutdown_ctx->cont != NULL)
618 shutdown_ctx->cont(shutdown_ctx->cont_cls, GNUNET_NO);
619
620 GNUNET_SCHEDULER_cancel(shutdown_ctx->sched, shutdown_ctx->cancel_task);
621 GNUNET_CLIENT_disconnect (shutdown_ctx->sock, GNUNET_NO);
622 GNUNET_free(shutdown_ctx);
623 }
624 else
625 {
626 GNUNET_assert(ntohs(msg->size) == sizeof(struct GNUNET_MessageHeader));
627 switch (ntohs(msg->type))
628 {
629 case GNUNET_MESSAGE_TYPE_SHUTDOWN_ACK:
630 GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
631 "Received confirmation for service shutdown.\n");
632 shutdown_ctx->confirmed = GNUNET_YES;
633 GNUNET_CLIENT_receive (shutdown_ctx->sock,
634 &service_shutdown_handler,
635 shutdown_ctx,
636 GNUNET_TIME_UNIT_FOREVER_REL);
637 break;
638 default: /* Fall through */
639 GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
640 "Service shutdown refused!\n");
641 if (shutdown_ctx->cont != NULL)
642 shutdown_ctx->cont(shutdown_ctx->cont_cls, GNUNET_YES);
643
644 GNUNET_SCHEDULER_cancel(shutdown_ctx->sched, shutdown_ctx->cancel_task);
645 GNUNET_CLIENT_disconnect (shutdown_ctx->sock, GNUNET_NO);
646 GNUNET_free(shutdown_ctx);
647 break;
648 }
649 }
650}
651
652/**
653 * Shutting down took too long, cancel receive and return error.
654 *
655 * @param cls closure
656 * @param tc context information (why was this task triggered now)
657 */
658void service_shutdown_cancel (void *cls,
659 const struct GNUNET_SCHEDULER_TaskContext * tc)
660{
661 struct ShutdownContext *shutdown_ctx = cls;
662 GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "service_shutdown_cancel called!\n");
663 shutdown_ctx->cont(shutdown_ctx->cont_cls, GNUNET_SYSERR);
664 GNUNET_CLIENT_disconnect (shutdown_ctx->sock, GNUNET_NO);
665 GNUNET_free(shutdown_ctx);
666}
667
668
669/**
670 * If possible, write a shutdown message to the target
671 * buffer and destroy the client connection.
672 *
673 * @param cls the "struct GNUNET_CLIENT_Connection" to destroy
674 * @param size number of bytes available in buf
675 * @param buf NULL on error, otherwise target buffer
676 * @return number of bytes written to buf
677 */
678static size_t
679write_shutdown (void *cls, size_t size, void *buf)
680{
681 struct GNUNET_MessageHeader *msg;
682 struct ShutdownContext *shutdown_ctx = cls;
683
684 if (size < sizeof (struct GNUNET_MessageHeader))
685 {
686 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
687 _("Failed to transmit shutdown request to client.\n"));
688 shutdown_ctx->cont(shutdown_ctx->cont_cls, GNUNET_SYSERR);
689 GNUNET_CLIENT_disconnect (shutdown_ctx->sock, GNUNET_NO);
690 GNUNET_free(shutdown_ctx);
691 return 0; /* client disconnected */
692 }
693
694 GNUNET_CLIENT_receive (shutdown_ctx->sock,
695 &service_shutdown_handler, shutdown_ctx,
696 GNUNET_TIME_UNIT_FOREVER_REL);
697 shutdown_ctx->cancel_task = GNUNET_SCHEDULER_add_delayed (shutdown_ctx->sched,
698 GNUNET_TIME_absolute_get_remaining(shutdown_ctx->timeout),
699 &service_shutdown_cancel,
700 shutdown_ctx);
701 msg = (struct GNUNET_MessageHeader *) buf;
702 msg->type = htons (GNUNET_MESSAGE_TYPE_ARM_SHUTDOWN);
703 msg->size = htons (sizeof (struct GNUNET_MessageHeader));
704 return sizeof (struct GNUNET_MessageHeader);
705}
706
707
708/**
709 * Request that the service should shutdown.
710 * Afterwards, the connection will automatically be
711 * disconnected. Hence the "sock" should not
712 * be used by the caller after this call
713 * (calling this function frees "sock" after a while).
714 *
715 * @param sched the scheduler to use for calling shutdown continuation
716 * @param sock the socket connected to the service
717 * @param timeout how long to wait before giving up on transmission
718 * @param cont continuation to call once the service is really down
719 * @param cont_cls closure for continuation
720 *
721 */
722void
723GNUNET_CLIENT_service_shutdown (struct GNUNET_SCHEDULER_Handle *sched,
724 struct GNUNET_CLIENT_Connection *sock,
725 struct GNUNET_TIME_Relative timeout,
726 GNUNET_CLIENT_ShutdownTask cont,
727 void *cont_cls)
728{
729 struct ShutdownContext *shutdown_ctx;
730 shutdown_ctx = GNUNET_malloc(sizeof(struct ShutdownContext));
731 shutdown_ctx->sched = sched;
732 shutdown_ctx->cont = cont;
733 shutdown_ctx->cont_cls = cont_cls;
734 shutdown_ctx->sock = sock;
735 shutdown_ctx->timeout = GNUNET_TIME_relative_to_absolute(timeout);
736 GNUNET_CONNECTION_notify_transmit_ready (sock->sock,
737 sizeof (struct
738 GNUNET_MessageHeader),
739 timeout,
740 &write_shutdown, shutdown_ctx);
741}
742
743
744/**
745 * Report service unavailable. 543 * Report service unavailable.
746 */ 544 */
747static void 545static void
diff --git a/src/util/test_service.c b/src/util/test_service.c
index 544f86fba..5f3146205 100644
--- a/src/util/test_service.c
+++ b/src/util/test_service.c
@@ -43,24 +43,18 @@ static struct GNUNET_SERVICE_Context *sctx;
43 43
44static int ok = 1; 44static int ok = 1;
45 45
46void
47end_cont (void *cls,
48 int reason)
49{
50 if (sctx != NULL)
51 GNUNET_SERVICE_stop (sctx);
52 else
53 GNUNET_SCHEDULER_shutdown (sched);
54 ok = 0;
55}
56
57static void 46static void
58end_it (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc) 47end_it (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
59{ 48{
60 struct GNUNET_CLIENT_Connection *client = cls; 49 struct GNUNET_CLIENT_Connection *client = cls;
61 50
62 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Shutting down service\n"); 51 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Shutting down service\n");
63 GNUNET_CLIENT_service_shutdown (sched, client, GNUNET_TIME_UNIT_FOREVER_REL, &end_cont, NULL); 52 GNUNET_CLIENT_disconnect (client, GNUNET_NO);
53 if (sctx != NULL)
54 {
55 GNUNET_SERVICE_stop (sctx);
56 sctx = NULL;
57 }
64} 58}
65 59
66 60