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git.proxmox.com Git - ovs.git/blob - lib/jsonrpc.c
2 * Copyright (c) 2009, 2010, 2011, 2012 Nicira Networks.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
25 #include "dynamic-string.h"
26 #include "fatal-signal.h"
30 #include "poll-loop.h"
31 #include "reconnect.h"
36 VLOG_DEFINE_THIS_MODULE(jsonrpc
);
39 struct stream
*stream
;
45 struct json_parser
*parser
;
46 struct jsonrpc_msg
*received
;
49 struct list output
; /* Contains "struct ofpbuf"s. */
53 /* Rate limit for error messages. */
54 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(5, 5);
56 static void jsonrpc_received(struct jsonrpc
*);
57 static void jsonrpc_cleanup(struct jsonrpc
*);
58 static void jsonrpc_error(struct jsonrpc
*, int error
);
60 /* This is just the same as stream_open() except that it uses the default
61 * JSONRPC ports if none is specified. */
63 jsonrpc_stream_open(const char *name
, struct stream
**streamp
, uint8_t dscp
)
65 return stream_open_with_default_ports(name
, JSONRPC_TCP_PORT
,
66 JSONRPC_SSL_PORT
, streamp
,
70 /* This is just the same as pstream_open() except that it uses the default
71 * JSONRPC ports if none is specified. */
73 jsonrpc_pstream_open(const char *name
, struct pstream
**pstreamp
, uint8_t dscp
)
75 return pstream_open_with_default_ports(name
, JSONRPC_TCP_PORT
,
76 JSONRPC_SSL_PORT
, pstreamp
, dscp
);
79 /* Returns a new JSON-RPC stream that uses 'stream' for input and output. The
80 * new jsonrpc object takes ownership of 'stream'. */
82 jsonrpc_open(struct stream
*stream
)
86 assert(stream
!= NULL
);
88 rpc
= xzalloc(sizeof *rpc
);
89 rpc
->name
= xstrdup(stream_get_name(stream
));
91 byteq_init(&rpc
->input
);
92 list_init(&rpc
->output
);
97 /* Destroys 'rpc', closing the stream on which it is based, and frees its
100 jsonrpc_close(struct jsonrpc
*rpc
)
103 jsonrpc_cleanup(rpc
);
109 /* Performs periodic maintenance on 'rpc', such as flushing output buffers. */
111 jsonrpc_run(struct jsonrpc
*rpc
)
117 stream_run(rpc
->stream
);
118 while (!list_is_empty(&rpc
->output
)) {
119 struct ofpbuf
*buf
= ofpbuf_from_list(rpc
->output
.next
);
122 retval
= stream_send(rpc
->stream
, buf
->data
, buf
->size
);
124 rpc
->backlog
-= retval
;
125 ofpbuf_pull(buf
, retval
);
127 list_remove(&buf
->list_node
);
131 if (retval
!= -EAGAIN
) {
132 VLOG_WARN_RL(&rl
, "%s: send error: %s",
133 rpc
->name
, strerror(-retval
));
134 jsonrpc_error(rpc
, -retval
);
141 /* Arranges for the poll loop to wake up when 'rpc' needs to perform
142 * maintenance activities. */
144 jsonrpc_wait(struct jsonrpc
*rpc
)
147 stream_run_wait(rpc
->stream
);
148 if (!list_is_empty(&rpc
->output
)) {
149 stream_send_wait(rpc
->stream
);
155 * Returns the current status of 'rpc'. The possible return values are:
158 * - EOF: end of file (remote end closed connection; not necessarily an error).
160 * When this functions nonzero, 'rpc' is effectively out of commission. 'rpc'
161 * will not receive any more messages and any further messages that one
162 * attempts to send with 'rpc' will be discarded. The caller can keep 'rpc'
163 * around as long as it wants, but it's not going to provide any more useful
167 jsonrpc_get_status(const struct jsonrpc
*rpc
)
172 /* Returns the number of bytes buffered by 'rpc' to be written to the
173 * underlying stream. Always returns 0 if 'rpc' has encountered an error or if
174 * the remote end closed the connection. */
176 jsonrpc_get_backlog(const struct jsonrpc
*rpc
)
178 return rpc
->status
? 0 : rpc
->backlog
;
181 /* Returns 'rpc''s name, that is, the name returned by stream_get_name() for
182 * the stream underlying 'rpc' when 'rpc' was created. */
184 jsonrpc_get_name(const struct jsonrpc
*rpc
)
190 jsonrpc_log_msg(const struct jsonrpc
*rpc
, const char *title
,
191 const struct jsonrpc_msg
*msg
)
193 if (VLOG_IS_DBG_ENABLED()) {
194 struct ds s
= DS_EMPTY_INITIALIZER
;
196 ds_put_format(&s
, ", method=\"%s\"", msg
->method
);
199 ds_put_cstr(&s
, ", params=");
200 json_to_ds(msg
->params
, 0, &s
);
203 ds_put_cstr(&s
, ", result=");
204 json_to_ds(msg
->result
, 0, &s
);
207 ds_put_cstr(&s
, ", error=");
208 json_to_ds(msg
->error
, 0, &s
);
211 ds_put_cstr(&s
, ", id=");
212 json_to_ds(msg
->id
, 0, &s
);
214 VLOG_DBG("%s: %s %s%s", rpc
->name
, title
,
215 jsonrpc_msg_type_to_string(msg
->type
), ds_cstr(&s
));
220 /* Schedules 'msg' to be sent on 'rpc' and returns 'rpc''s status (as with
221 * jsonrpc_get_status()).
223 * If 'msg' cannot be sent immediately, it is appended to a buffer. The caller
224 * is responsible for ensuring that the amount of buffered data is somehow
225 * limited. (jsonrpc_get_backlog() returns the amount of data currently
226 * buffered in 'rpc'.)
228 * Always takes ownership of 'msg', regardless of success. */
230 jsonrpc_send(struct jsonrpc
*rpc
, struct jsonrpc_msg
*msg
)
238 jsonrpc_msg_destroy(msg
);
242 jsonrpc_log_msg(rpc
, "send", msg
);
244 json
= jsonrpc_msg_to_json(msg
);
245 s
= json_to_string(json
, 0);
249 buf
= xmalloc(sizeof *buf
);
250 ofpbuf_use(buf
, s
, length
);
252 list_push_back(&rpc
->output
, &buf
->list_node
);
253 rpc
->backlog
+= length
;
255 if (rpc
->backlog
== length
) {
261 /* Attempts to receive a message from 'rpc'.
263 * If successful, stores the received message in '*msgp' and returns 0. The
264 * caller takes ownership of '*msgp' and must eventually destroy it with
265 * jsonrpc_msg_destroy().
267 * Otherwise, stores NULL in '*msgp' and returns one of the following:
269 * - EAGAIN: No message has been received.
271 * - EOF: The remote end closed the connection gracefully.
273 * - Otherwise an errno value that represents a JSON-RPC protocol violation
274 * or another error fatal to the connection. 'rpc' will not send or
275 * receive any more messages.
278 jsonrpc_recv(struct jsonrpc
*rpc
, struct jsonrpc_msg
**msgp
)
285 while (!rpc
->received
) {
286 if (byteq_is_empty(&rpc
->input
)) {
290 chunk
= byteq_headroom(&rpc
->input
);
291 retval
= stream_recv(rpc
->stream
, byteq_head(&rpc
->input
), chunk
);
293 if (retval
== -EAGAIN
) {
296 VLOG_WARN_RL(&rl
, "%s: receive error: %s",
297 rpc
->name
, strerror(-retval
));
298 jsonrpc_error(rpc
, -retval
);
301 } else if (retval
== 0) {
302 jsonrpc_error(rpc
, EOF
);
305 byteq_advance_head(&rpc
->input
, retval
);
310 rpc
->parser
= json_parser_create(0);
312 n
= byteq_tailroom(&rpc
->input
);
313 used
= json_parser_feed(rpc
->parser
,
314 (char *) byteq_tail(&rpc
->input
), n
);
315 byteq_advance_tail(&rpc
->input
, used
);
316 if (json_parser_is_done(rpc
->parser
)) {
317 jsonrpc_received(rpc
);
319 const struct byteq
*q
= &rpc
->input
;
320 if (q
->head
<= BYTEQ_SIZE
) {
321 stream_report_content(q
->buffer
, q
->head
,
323 THIS_MODULE
, rpc
->name
);
331 *msgp
= rpc
->received
;
332 rpc
->received
= NULL
;
336 /* Causes the poll loop to wake up when jsonrpc_recv() may return a value other
339 jsonrpc_recv_wait(struct jsonrpc
*rpc
)
341 if (rpc
->status
|| rpc
->received
|| !byteq_is_empty(&rpc
->input
)) {
342 (poll_immediate_wake
)(rpc
->name
);
344 stream_recv_wait(rpc
->stream
);
348 /* Sends 'msg' on 'rpc' and waits for it to be successfully queued to the
349 * underlying stream. Returns 0 if 'msg' was sent successfully, otherwise a
350 * status value (see jsonrpc_get_status()).
352 * Always takes ownership of 'msg', regardless of success. */
354 jsonrpc_send_block(struct jsonrpc
*rpc
, struct jsonrpc_msg
*msg
)
360 error
= jsonrpc_send(rpc
, msg
);
367 if (list_is_empty(&rpc
->output
) || rpc
->status
) {
375 /* Waits for a message to be received on 'rpc'. Same semantics as
376 * jsonrpc_recv() except that EAGAIN will never be returned. */
378 jsonrpc_recv_block(struct jsonrpc
*rpc
, struct jsonrpc_msg
**msgp
)
381 int error
= jsonrpc_recv(rpc
, msgp
);
382 if (error
!= EAGAIN
) {
389 jsonrpc_recv_wait(rpc
);
394 /* Sends 'request' to 'rpc' then waits for a reply. The return value is 0 if
395 * successful, in which case '*replyp' is set to the reply, which the caller
396 * must eventually free with jsonrpc_msg_destroy(). Otherwise returns a status
397 * value (see jsonrpc_get_status()).
399 * Discards any message received on 'rpc' that is not a reply to 'request'
400 * (based on message id).
402 * Always takes ownership of 'request', regardless of success. */
404 jsonrpc_transact_block(struct jsonrpc
*rpc
, struct jsonrpc_msg
*request
,
405 struct jsonrpc_msg
**replyp
)
407 struct jsonrpc_msg
*reply
= NULL
;
411 id
= json_clone(request
->id
);
412 error
= jsonrpc_send_block(rpc
, request
);
415 error
= jsonrpc_recv_block(rpc
, &reply
);
419 if ((reply
->type
== JSONRPC_REPLY
|| reply
->type
== JSONRPC_ERROR
)
420 && json_equal(id
, reply
->id
)) {
423 jsonrpc_msg_destroy(reply
);
426 *replyp
= error
? NULL
: reply
;
432 jsonrpc_received(struct jsonrpc
*rpc
)
434 struct jsonrpc_msg
*msg
;
438 json
= json_parser_finish(rpc
->parser
);
440 if (json
->type
== JSON_STRING
) {
441 VLOG_WARN_RL(&rl
, "%s: error parsing stream: %s",
442 rpc
->name
, json_string(json
));
443 jsonrpc_error(rpc
, EPROTO
);
448 error
= jsonrpc_msg_from_json(json
, &msg
);
450 VLOG_WARN_RL(&rl
, "%s: received bad JSON-RPC message: %s",
453 jsonrpc_error(rpc
, EPROTO
);
457 jsonrpc_log_msg(rpc
, "received", msg
);
462 jsonrpc_error(struct jsonrpc
*rpc
, int error
)
467 jsonrpc_cleanup(rpc
);
472 jsonrpc_cleanup(struct jsonrpc
*rpc
)
474 stream_close(rpc
->stream
);
477 json_parser_abort(rpc
->parser
);
480 jsonrpc_msg_destroy(rpc
->received
);
481 rpc
->received
= NULL
;
483 ofpbuf_list_delete(&rpc
->output
);
487 static struct jsonrpc_msg
*
488 jsonrpc_create(enum jsonrpc_msg_type type
, const char *method
,
489 struct json
*params
, struct json
*result
, struct json
*error
,
492 struct jsonrpc_msg
*msg
= xmalloc(sizeof *msg
);
494 msg
->method
= method
? xstrdup(method
) : NULL
;
495 msg
->params
= params
;
496 msg
->result
= result
;
503 jsonrpc_create_id(void)
505 static unsigned int id
;
506 return json_integer_create(id
++);
510 jsonrpc_create_request(const char *method
, struct json
*params
,
513 struct json
*id
= jsonrpc_create_id();
515 *idp
= json_clone(id
);
517 return jsonrpc_create(JSONRPC_REQUEST
, method
, params
, NULL
, NULL
, id
);
521 jsonrpc_create_notify(const char *method
, struct json
*params
)
523 return jsonrpc_create(JSONRPC_NOTIFY
, method
, params
, NULL
, NULL
, NULL
);
527 jsonrpc_create_reply(struct json
*result
, const struct json
*id
)
529 return jsonrpc_create(JSONRPC_REPLY
, NULL
, NULL
, result
, NULL
,
534 jsonrpc_create_error(struct json
*error
, const struct json
*id
)
536 return jsonrpc_create(JSONRPC_REPLY
, NULL
, NULL
, NULL
, error
,
541 jsonrpc_msg_type_to_string(enum jsonrpc_msg_type type
)
544 case JSONRPC_REQUEST
:
548 return "notification";
560 jsonrpc_msg_is_valid(const struct jsonrpc_msg
*m
)
562 const char *type_name
;
563 unsigned int pattern
;
565 if (m
->params
&& m
->params
->type
!= JSON_ARRAY
) {
566 return xstrdup("\"params\" must be JSON array");
570 case JSONRPC_REQUEST
:
587 return xasprintf("invalid JSON-RPC message type %d", m
->type
);
590 type_name
= jsonrpc_msg_type_to_string(m
->type
);
591 if ((m
->method
!= NULL
) != ((pattern
& 0x10000) != 0)) {
592 return xasprintf("%s must%s have \"method\"",
593 type_name
, (pattern
& 0x10000) ? "" : " not");
596 if ((m
->params
!= NULL
) != ((pattern
& 0x1000) != 0)) {
597 return xasprintf("%s must%s have \"params\"",
598 type_name
, (pattern
& 0x1000) ? "" : " not");
601 if ((m
->result
!= NULL
) != ((pattern
& 0x100) != 0)) {
602 return xasprintf("%s must%s have \"result\"",
603 type_name
, (pattern
& 0x100) ? "" : " not");
606 if ((m
->error
!= NULL
) != ((pattern
& 0x10) != 0)) {
607 return xasprintf("%s must%s have \"error\"",
608 type_name
, (pattern
& 0x10) ? "" : " not");
611 if ((m
->id
!= NULL
) != ((pattern
& 0x1) != 0)) {
612 return xasprintf("%s must%s have \"id\"",
613 type_name
, (pattern
& 0x1) ? "" : " not");
620 jsonrpc_msg_destroy(struct jsonrpc_msg
*m
)
624 json_destroy(m
->params
);
625 json_destroy(m
->result
);
626 json_destroy(m
->error
);
633 null_from_json_null(struct json
*json
)
635 if (json
&& json
->type
== JSON_NULL
) {
643 jsonrpc_msg_from_json(struct json
*json
, struct jsonrpc_msg
**msgp
)
645 struct json
*method
= NULL
;
646 struct jsonrpc_msg
*msg
= NULL
;
647 struct shash
*object
;
650 if (json
->type
!= JSON_OBJECT
) {
651 error
= xstrdup("message is not a JSON object");
654 object
= json_object(json
);
656 method
= shash_find_and_delete(object
, "method");
657 if (method
&& method
->type
!= JSON_STRING
) {
658 error
= xstrdup("method is not a JSON string");
662 msg
= xzalloc(sizeof *msg
);
663 msg
->method
= method
? xstrdup(method
->u
.string
) : NULL
;
664 msg
->params
= null_from_json_null(shash_find_and_delete(object
, "params"));
665 msg
->result
= null_from_json_null(shash_find_and_delete(object
, "result"));
666 msg
->error
= null_from_json_null(shash_find_and_delete(object
, "error"));
667 msg
->id
= null_from_json_null(shash_find_and_delete(object
, "id"));
668 msg
->type
= (msg
->result
? JSONRPC_REPLY
669 : msg
->error
? JSONRPC_ERROR
670 : msg
->id
? JSONRPC_REQUEST
672 if (!shash_is_empty(object
)) {
673 error
= xasprintf("message has unexpected member \"%s\"",
674 shash_first(object
)->name
);
677 error
= jsonrpc_msg_is_valid(msg
);
683 json_destroy(method
);
686 jsonrpc_msg_destroy(msg
);
694 jsonrpc_msg_to_json(struct jsonrpc_msg
*m
)
696 struct json
*json
= json_object_create();
699 json_object_put(json
, "method", json_string_create_nocopy(m
->method
));
703 json_object_put(json
, "params", m
->params
);
707 json_object_put(json
, "result", m
->result
);
708 } else if (m
->type
== JSONRPC_ERROR
) {
709 json_object_put(json
, "result", json_null_create());
713 json_object_put(json
, "error", m
->error
);
714 } else if (m
->type
== JSONRPC_REPLY
) {
715 json_object_put(json
, "error", json_null_create());
719 json_object_put(json
, "id", m
->id
);
720 } else if (m
->type
== JSONRPC_NOTIFY
) {
721 json_object_put(json
, "id", json_null_create());
729 /* A JSON-RPC session with reconnection. */
731 struct jsonrpc_session
{
732 struct reconnect
*reconnect
;
734 struct stream
*stream
;
735 struct pstream
*pstream
;
740 /* Creates and returns a jsonrpc_session to 'name', which should be a string
741 * acceptable to stream_open() or pstream_open().
743 * If 'name' is an active connection method, e.g. "tcp:127.1.2.3", the new
744 * jsonrpc_session connects and reconnects, with back-off, to 'name'.
746 * If 'name' is a passive connection method, e.g. "ptcp:", the new
747 * jsonrpc_session listens for connections to 'name'. It maintains at most one
748 * connection at any given time. Any new connection causes the previous one
749 * (if any) to be dropped. */
750 struct jsonrpc_session
*
751 jsonrpc_session_open(const char *name
)
753 struct jsonrpc_session
*s
;
755 s
= xmalloc(sizeof *s
);
756 s
->reconnect
= reconnect_create(time_msec());
757 reconnect_set_name(s
->reconnect
, name
);
758 reconnect_enable(s
->reconnect
, time_msec());
765 if (!pstream_verify_name(name
)) {
766 reconnect_set_passive(s
->reconnect
, true, time_msec());
769 if (!stream_or_pstream_needs_probes(name
)) {
770 reconnect_set_probe_interval(s
->reconnect
, 0);
776 /* Creates and returns a jsonrpc_session that is initially connected to
777 * 'jsonrpc'. If the connection is dropped, it will not be reconnected.
779 * On the assumption that such connections are likely to be short-lived
780 * (e.g. from ovs-vsctl), informational logging for them is suppressed. */
781 struct jsonrpc_session
*
782 jsonrpc_session_open_unreliably(struct jsonrpc
*jsonrpc
)
784 struct jsonrpc_session
*s
;
786 s
= xmalloc(sizeof *s
);
787 s
->reconnect
= reconnect_create(time_msec());
788 reconnect_set_quiet(s
->reconnect
, true);
789 reconnect_set_name(s
->reconnect
, jsonrpc_get_name(jsonrpc
));
790 reconnect_set_max_tries(s
->reconnect
, 0);
791 reconnect_connected(s
->reconnect
, time_msec());
801 jsonrpc_session_close(struct jsonrpc_session
*s
)
804 jsonrpc_close(s
->rpc
);
805 reconnect_destroy(s
->reconnect
);
806 stream_close(s
->stream
);
807 pstream_close(s
->pstream
);
813 jsonrpc_session_disconnect(struct jsonrpc_session
*s
)
816 jsonrpc_error(s
->rpc
, EOF
);
817 jsonrpc_close(s
->rpc
);
820 } else if (s
->stream
) {
821 stream_close(s
->stream
);
828 jsonrpc_session_connect(struct jsonrpc_session
*s
)
830 const char *name
= reconnect_get_name(s
->reconnect
);
833 jsonrpc_session_disconnect(s
);
834 if (!reconnect_is_passive(s
->reconnect
)) {
835 error
= jsonrpc_stream_open(name
, &s
->stream
, s
->dscp
);
837 reconnect_connecting(s
->reconnect
, time_msec());
840 error
= s
->pstream
? 0 : jsonrpc_pstream_open(name
, &s
->pstream
,
843 reconnect_listening(s
->reconnect
, time_msec());
848 reconnect_connect_failed(s
->reconnect
, time_msec(), error
);
854 jsonrpc_session_run(struct jsonrpc_session
*s
)
857 struct stream
*stream
;
860 error
= pstream_accept(s
->pstream
, &stream
);
862 if (s
->rpc
|| s
->stream
) {
864 "%s: new connection replacing active connection",
865 reconnect_get_name(s
->reconnect
));
866 jsonrpc_session_disconnect(s
);
868 reconnect_connected(s
->reconnect
, time_msec());
869 s
->rpc
= jsonrpc_open(stream
);
870 } else if (error
!= EAGAIN
) {
871 reconnect_listen_error(s
->reconnect
, time_msec(), error
);
872 pstream_close(s
->pstream
);
881 error
= jsonrpc_get_status(s
->rpc
);
883 reconnect_disconnected(s
->reconnect
, time_msec(), error
);
884 jsonrpc_session_disconnect(s
);
886 } else if (s
->stream
) {
889 stream_run(s
->stream
);
890 error
= stream_connect(s
->stream
);
892 reconnect_connected(s
->reconnect
, time_msec());
893 s
->rpc
= jsonrpc_open(s
->stream
);
895 } else if (error
!= EAGAIN
) {
896 reconnect_connect_failed(s
->reconnect
, time_msec(), error
);
897 stream_close(s
->stream
);
902 switch (reconnect_run(s
->reconnect
, time_msec())) {
903 case RECONNECT_CONNECT
:
904 jsonrpc_session_connect(s
);
907 case RECONNECT_DISCONNECT
:
908 reconnect_disconnected(s
->reconnect
, time_msec(), 0);
909 jsonrpc_session_disconnect(s
);
912 case RECONNECT_PROBE
:
915 struct jsonrpc_msg
*request
;
917 params
= json_array_create_empty();
918 request
= jsonrpc_create_request("echo", params
, NULL
);
919 json_destroy(request
->id
);
920 request
->id
= json_string_create("echo");
921 jsonrpc_send(s
->rpc
, request
);
928 jsonrpc_session_wait(struct jsonrpc_session
*s
)
931 jsonrpc_wait(s
->rpc
);
932 } else if (s
->stream
) {
933 stream_run_wait(s
->stream
);
934 stream_connect_wait(s
->stream
);
937 pstream_wait(s
->pstream
);
939 reconnect_wait(s
->reconnect
, time_msec());
943 jsonrpc_session_get_backlog(const struct jsonrpc_session
*s
)
945 return s
->rpc
? jsonrpc_get_backlog(s
->rpc
) : 0;
948 /* Always returns a pointer to a valid C string, assuming 's' was initialized
951 jsonrpc_session_get_name(const struct jsonrpc_session
*s
)
953 return reconnect_get_name(s
->reconnect
);
956 /* Always takes ownership of 'msg', regardless of success. */
958 jsonrpc_session_send(struct jsonrpc_session
*s
, struct jsonrpc_msg
*msg
)
961 return jsonrpc_send(s
->rpc
, msg
);
963 jsonrpc_msg_destroy(msg
);
969 jsonrpc_session_recv(struct jsonrpc_session
*s
)
972 struct jsonrpc_msg
*msg
;
973 jsonrpc_recv(s
->rpc
, &msg
);
975 reconnect_received(s
->reconnect
, time_msec());
976 if (msg
->type
== JSONRPC_REQUEST
&& !strcmp(msg
->method
, "echo")) {
977 /* Echo request. Send reply. */
978 struct jsonrpc_msg
*reply
;
980 reply
= jsonrpc_create_reply(json_clone(msg
->params
), msg
->id
);
981 jsonrpc_session_send(s
, reply
);
982 } else if (msg
->type
== JSONRPC_REPLY
983 && msg
->id
&& msg
->id
->type
== JSON_STRING
984 && !strcmp(msg
->id
->u
.string
, "echo")) {
985 /* It's a reply to our echo request. Suppress it. */
989 jsonrpc_msg_destroy(msg
);
996 jsonrpc_session_recv_wait(struct jsonrpc_session
*s
)
999 jsonrpc_recv_wait(s
->rpc
);
1004 jsonrpc_session_is_alive(const struct jsonrpc_session
*s
)
1006 return s
->rpc
|| s
->stream
|| reconnect_get_max_tries(s
->reconnect
);
1010 jsonrpc_session_is_connected(const struct jsonrpc_session
*s
)
1012 return s
->rpc
!= NULL
;
1016 jsonrpc_session_get_seqno(const struct jsonrpc_session
*s
)
1022 jsonrpc_session_get_status(const struct jsonrpc_session
*s
)
1024 return s
&& s
->rpc
? jsonrpc_get_status(s
->rpc
) : 0;
1028 jsonrpc_session_get_reconnect_stats(const struct jsonrpc_session
*s
,
1029 struct reconnect_stats
*stats
)
1031 reconnect_get_stats(s
->reconnect
, time_msec(), stats
);
1035 jsonrpc_session_force_reconnect(struct jsonrpc_session
*s
)
1037 reconnect_force_reconnect(s
->reconnect
, time_msec());
1041 jsonrpc_session_set_max_backoff(struct jsonrpc_session
*s
, int max_backoff
)
1043 reconnect_set_backoff(s
->reconnect
, 0, max_backoff
);
1047 jsonrpc_session_set_probe_interval(struct jsonrpc_session
*s
,
1050 reconnect_set_probe_interval(s
->reconnect
, probe_interval
);
1054 jsonrpc_session_set_dscp(struct jsonrpc_session
*s
,