/**
* Outgoing Link Writable Handler
*/
static int router_writable_link_handler(void* context, dx_link_t *link)
{
dx_router_t *router = (dx_router_t*) context;
int grant_delivery = 0;
pn_delivery_t *delivery;
dx_router_link_t *rlink = (dx_router_link_t*) dx_link_get_context(link);
pn_link_t *pn_link = dx_link_pn(link);
uint64_t tag;
sys_mutex_lock(router->lock);
if (DEQ_SIZE(rlink->out_fifo) > 0) {
grant_delivery = 1;
tag = router->dtag++;
}
sys_mutex_unlock(router->lock);
if (grant_delivery) {
pn_delivery(pn_link, pn_dtag((char*) &tag, 8));
delivery = pn_link_current(pn_link);
if (delivery) {
router_tx_handler(context, link, delivery);
return 1;
}
}
return 0;
}
void process_flow(ldp_connection_t *conn, pn_event_t *event) {
fprintf(stderr, "flow event %s\n", pn_event_type_name(pn_event_type(event)));
pn_link_t *sender = pn_event_link(event);
pn_message_t *message = pn_message();
pn_message_set_address(message, "amqp://foo/bar");
pn_data_t *body = pn_message_body(message);
char *msgtext = "hello world!";
pn_data_put_string(body, pn_bytes(strlen(msgtext), msgtext));
pn_buffer_t *buffer = pn_buffer(1000);
char *encoded = pn_buffer_bytes(buffer).start;
size_t size = pn_buffer_capacity(buffer);
int err = pn_message_encode(message, encoded, &size);
if (err) {
fprintf(stderr, "trouble encoding message\n");
} else {
char tag[8];
static uint64_t next_tag;
*((uint64_t*)tag) = ++next_tag;
pn_delivery_t *d = pn_delivery(sender, pn_dtag(tag, 8));
pn_link_send(sender, encoded, size);
pn_link_advance(sender);
}
pn_buffer_free(buffer);
pn_message_free(message);
}
static pn_event_type_t message_stream_handler(test_handler_t *th, pn_event_t *e) {
struct message_stream_context *ctx = (struct message_stream_context*)th->context;
switch (pn_event_type(e)) {
case PN_CONNECTION_BOUND:
pn_transport_set_max_frame(pn_event_transport(e), FRAME);
return PN_EVENT_NONE;
case PN_SESSION_INIT:
pn_session_set_incoming_capacity(pn_event_session(e), FRAME); /* Single frame incoming */
pn_session_set_outgoing_window(pn_event_session(e), 1); /* Single frame outgoing */
return PN_EVENT_NONE;
case PN_LINK_REMOTE_OPEN:
common_handler(th, e);
if (pn_link_is_receiver(pn_event_link(e))) {
pn_link_flow(pn_event_link(e), 1);
} else {
ctx->sender = pn_event_link(e);
}
return PN_EVENT_NONE;
case PN_LINK_FLOW: /* Start a delivery */
if (pn_link_is_sender(pn_event_link(e)) && !ctx->dlv) {
ctx->dlv = pn_delivery(pn_event_link(e), pn_dtag("x", 1));
}
return PN_LINK_FLOW;
case PN_CONNECTION_WAKE: { /* Send a chunk */
ssize_t remains = ctx->size - ctx->sent;
ssize_t n = (CHUNK < remains) ? CHUNK : remains;
TEST_CHECK(th->t, n == pn_link_send(ctx->sender, ctx->send_buf.start + ctx->sent, n));
ctx->sent += n;
if (ctx->sent == ctx->size) {
TEST_CHECK(th->t, pn_link_advance(ctx->sender));
}
return PN_CONNECTION_WAKE;
}
case PN_DELIVERY: { /* Receive a delivery - smaller than a chunk? */
pn_delivery_t *dlv = pn_event_delivery(e);
if (pn_delivery_readable(dlv)) {
ssize_t n = pn_delivery_pending(dlv);
rwbytes_ensure(&ctx->recv_buf, ctx->received + n);
TEST_ASSERT(n == pn_link_recv(pn_event_link(e), ctx->recv_buf.start + ctx->received, n));
ctx->received += n;
}
ctx->complete = !pn_delivery_partial(dlv);
return PN_DELIVERY;
}
default:
return common_handler(th, e);
}
}
tracker sender::send(const message &message) {
uint64_t id = ++tag_counter;
pn_delivery_t *dlv =
pn_delivery(pn_object(), pn_dtag(reinterpret_cast<const char*>(&id), sizeof(id)));
std::vector<char> buf;
message.encode(buf);
assert(!buf.empty());
pn_link_send(pn_object(), &buf[0], buf.size());
pn_link_advance(pn_object());
if (pn_link_snd_settle_mode(pn_object()) == PN_SND_SETTLED)
pn_delivery_settle(dlv);
if (!pn_link_credit(pn_object()))
link_context::get(pn_object()).draining = false;
return make_wrapper<tracker>(dlv);
}
static void CORE_link_deliver(void *context, qdr_link_t *link, qdr_delivery_t *dlv, bool settled)
{
qd_router_t *router = (qd_router_t*) context;
qd_link_t *qlink = (qd_link_t*) qdr_link_get_context(link);
if (!qlink)
return;
pn_link_t *plink = qd_link_pn(qlink);
if (!plink)
return;
const char *tag;
int tag_length;
qdr_delivery_tag(dlv, &tag, &tag_length);
pn_delivery(plink, pn_dtag(tag, tag_length));
pn_delivery_t *pdlv = pn_link_current(plink);
//
// If the remote send settle mode is set to 'settled', we should settle the delivery on behalf of the receiver.
//
bool remote_snd_settled = qd_link_remote_snd_settle_mode(qlink) == PN_SND_SETTLED;
if (!settled && !remote_snd_settled) {
pn_delivery_set_context(pdlv, dlv);
qdr_delivery_set_context(dlv, pdlv);
qdr_delivery_incref(dlv);
}
qd_message_send(qdr_delivery_message(dlv), qlink, qdr_link_strip_annotations_out(link));
if (!settled && remote_snd_settled)
// Tell the core that the delivery has been accepted and settled, since we are settling on behalf of the receiver
qdr_delivery_update_disposition(router->router_core, dlv, PN_ACCEPTED, true, false);
if (settled || remote_snd_settled)
pn_delivery_settle(pdlv);
pn_link_advance(plink);
}
int pn_messenger_put(pn_messenger_t *messenger, pn_message_t *msg)
{
if (!messenger) return PN_ARG_ERR;
if (!msg) return pn_error_set(messenger->error, PN_ARG_ERR, "null message");
outward_munge(messenger, msg);
const char *address = pn_message_get_address(msg);
pn_link_t *sender = pn_messenger_target(messenger, address);
if (!sender)
return pn_error_format(messenger->error, PN_ERR,
"unable to send to address: %s (%s)", address,
pn_driver_error(messenger->driver));
// XXX: proper tag
char tag[8];
void *ptr = &tag;
uint64_t next = messenger->next_tag++;
*((uint32_t *) ptr) = next;
pn_delivery(sender, pn_dtag(tag, 8));
size_t size = 1024;
// XXX: max message size
while (size < 16*1024) {
char encoded[size];
int err = pn_message_encode(msg, encoded, &size);
if (err == PN_OVERFLOW) {
size *= 2;
} else if (err) {
return err;
} else {
ssize_t n = pn_send(sender, encoded, size);
if (n < 0) {
return n;
} else {
pn_advance(sender);
pn_messenger_tsync(messenger, false_pred, 0);
return 0;
}
}
}
return PN_ERR;
}
void connection_dispatch(pn_handler_t *h, pn_event_t *event, pn_event_type_t type)
{
connection_context_t *cc = connection_context(h);
bool replying = cc->global->opts->reply;
switch (type) {
case PN_LINK_REMOTE_OPEN:
{
pn_link_t *link = pn_event_link(event);
if (pn_link_is_receiver(link)) {
check(cc->recv_link == NULL, "Multiple incomming links on one connection");
cc->recv_link = link;
pn_connection_t *conn = pn_event_connection(event);
pn_list_add(cc->global->active_connections, conn);
if (cc->global->shutting_down) {
pn_connection_close(conn);
break;
}
if (replying) {
// Set up a reply link and defer granting credit to the incoming link
pn_connection_t *conn = pn_session_connection(pn_link_session(link));
pn_session_t *ssn = pn_session(conn);
pn_session_open(ssn);
char name[100]; // prefer a multiplatform uuid generator
sprintf(name, "reply_sender_%d", cc->connection_id);
cc->reply_link = pn_sender(ssn, name);
pn_link_open(cc->reply_link);
}
else {
pn_flowcontroller_t *fc = pn_flowcontroller(1024);
pn_handler_add(h, fc);
pn_decref(fc);
}
}
}
break;
case PN_LINK_FLOW:
{
if (replying) {
pn_link_t *reply_link = pn_event_link(event);
// pn_flowcontroller handles the non-reply case
check(reply_link == cc->reply_link, "internal error");
// Grant the sender as much credit as just given to us for replies
int delta = pn_link_credit(reply_link) - pn_link_credit(cc->recv_link);
if (delta > 0)
pn_link_flow(cc->recv_link, delta);
}
}
break;
case PN_DELIVERY:
{
pn_link_t *recv_link = pn_event_link(event);
pn_delivery_t *dlv = pn_event_delivery(event);
if (pn_link_is_receiver(recv_link) && !pn_delivery_partial(dlv)) {
if (cc->global->received == 0) statistics_start(cc->global->stats);
size_t encoded_size = pn_delivery_pending(dlv);
cc->global->encoded_data = ensure_buffer(cc->global->encoded_data, encoded_size,
&cc->global->encoded_data_size);
check(cc->global->encoded_data, "decoding buffer realloc failure");
ssize_t n = pn_link_recv(recv_link, cc->global->encoded_data, encoded_size);
check(n == (ssize_t) encoded_size, "message data read fail");
pn_message_t *msg = cc->global->message;
int err = pn_message_decode(msg, cc->global->encoded_data, n);
check(err == 0, "message decode error");
cc->global->received++;
pn_delivery_settle(dlv);
statistics_msg_received(cc->global->stats, msg);
if (replying) {
const char *reply_addr = pn_message_get_reply_to(msg);
if (reply_addr) {
pn_link_t *rl = cc->reply_link;
check(pn_link_credit(rl) > 0, "message received without corresponding reply credit");
LOG("Replying to: %s\n", reply_addr );
pn_message_set_address(msg, reply_addr);
pn_message_set_creation_time(msg, msgr_now());
char tag[8];
void *ptr = &tag;
*((uint64_t *) ptr) = cc->global->sent;
pn_delivery_t *dlv = pn_delivery(rl, pn_dtag(tag, 8));
size_t size = cc->global->encoded_data_size;
int err = pn_message_encode(msg, cc->global->encoded_data, &size);
check(err == 0, "message encoding error");
pn_link_send(rl, cc->global->encoded_data, size);
pn_delivery_settle(dlv);
cc->global->sent++;
}
}
}
if (cc->global->received >= cc->global->opts->msg_count) {
global_shutdown(cc->global);
}
}
break;
case PN_CONNECTION_UNBOUND:
{
pn_connection_t *conn = pn_event_connection(event);
pn_list_remove(cc->global->active_connections, conn);
pn_connection_release(conn);
}
break;
default:
break;
}
}
// check if a command needs processing
static void _poll_command(protocolState_t *ps)
{
if (ps->stopped) return;
threadIPC_t *ipc = ps->ipc;
pthread_mutex_lock(&ipc->lock);
switch (ipc->command) {
case COMMAND_SHUTDOWN:
DBGPRINTF("omamqp1: Protocol thread processing shutdown command\n");
ps->stopped = true;
_close_connection(ps);
// wait for the shutdown to complete before ack'ing this command
break;
case COMMAND_IS_READY:
DBGPRINTF("omamqp1: Protocol thread processing ready query command\n");
ipc->result = _is_ready(ps->sender)
? RS_RET_OK
: RS_RET_SUSPENDED;
ipc->command = COMMAND_DONE;
pthread_cond_signal(&ipc->condition);
break;
case COMMAND_SEND:
if (ps->delivery) break; // currently processing this command
DBGPRINTF("omamqp1: Protocol thread processing send message command\n");
if (!_is_ready(ps->sender)) {
ipc->result = RS_RET_SUSPENDED;
ipc->command = COMMAND_DONE;
pthread_cond_signal(&ipc->condition);
break;
}
// send the message
++ps->tag;
ps->delivery = pn_delivery(ps->sender,
pn_dtag((const char *)&ps->tag, sizeof(ps->tag)));
pn_message_t *message = ipc->message;
assert(message);
int rc = 0;
size_t len = ps->buffer_size;
do {
rc = pn_message_encode(message, ps->encode_buffer, &len);
if (rc == PN_OVERFLOW) {
_grow_buffer(ps);
len = ps->buffer_size;
}
} while (rc == PN_OVERFLOW);
pn_link_send(ps->sender, ps->encode_buffer, len);
pn_link_advance(ps->sender);
++ps->msgs_sent;
// command completes when remote updates the delivery (see PN_DELIVERY)
break;
case COMMAND_DONE:
break;
}
pthread_mutex_unlock(&ipc->lock);
}
void client_callback(pn_connector_t *ctor)
{
struct client_context *ctx = pn_connector_context(ctor);
if (pn_connector_closed(ctor)) {
ctx->done = true;
}
pn_sasl_t *sasl = pn_connector_sasl(ctor);
while (pn_sasl_state(sasl) != PN_SASL_PASS) {
pn_sasl_state_t st = pn_sasl_state(sasl);
switch (st) {
case PN_SASL_IDLE:
return;
case PN_SASL_CONF:
if (ctx->mechanism && !strcmp(ctx->mechanism, "PLAIN")) {
pn_sasl_plain(sasl, ctx->username, ctx->password);
} else {
pn_sasl_mechanisms(sasl, ctx->mechanism);
pn_sasl_client(sasl);
}
break;
case PN_SASL_STEP:
if (pn_sasl_pending(sasl)) {
fprintf(stderr, "challenge failed\n");
ctx->done = true;
}
return;
case PN_SASL_FAIL:
fprintf(stderr, "authentication failed\n");
ctx->done = true;
return;
case PN_SASL_PASS:
break;
}
}
pn_connection_t *connection = pn_connector_connection(ctor);
char tagstr[1024];
char msg[ctx->size];
char data[ctx->size + 16];
for (int i = 0; i < ctx->size; i++) {
msg[i] = 'x';
}
size_t ndata = pn_message_data(data, ctx->size + 16, msg, ctx->size);
if (!ctx->init) {
ctx->init = true;
char container[1024];
if (gethostname(container, 1024)) pn_fatal("hostname lookup failed");
pn_connection_set_container(connection, container);
pn_connection_set_hostname(connection, ctx->hostname);
pn_session_t *ssn = pn_session(connection);
pn_connection_open(connection);
pn_session_open(ssn);
if (ctx->send_count) {
pn_link_t *snd = pn_sender(ssn, "sender");
pn_set_target(snd, ctx->address);
pn_link_open(snd);
char buf[16];
for (int i = 0; i < ctx->send_count; i++) {
sprintf(buf, "%x", i);
pn_delivery(snd, pn_dtag(buf, strlen(buf)));
}
}
if (ctx->recv_count) {
pn_link_t *rcv = pn_receiver(ssn, "receiver");
pn_set_source(rcv, ctx->address);
pn_link_open(rcv);
pn_flow(rcv, ctx->recv_count < ctx->high ? ctx->recv_count : ctx->high);
}
}
pn_delivery_t *delivery = pn_work_head(connection);
while (delivery)
{
pn_delivery_tag_t tag = pn_delivery_tag(delivery);
pn_quote_data(tagstr, 1024, tag.bytes, tag.size);
pn_link_t *link = pn_link(delivery);
if (pn_writable(delivery)) {
pn_send(link, data, ndata);
if (pn_advance(link)) {
if (!ctx->quiet) printf("sent delivery: %s\n", tagstr);
}
} else if (pn_readable(delivery)) {
if (!ctx->quiet) {
printf("received delivery: %s\n", tagstr);
printf(" payload = \"");
}
while (true) {
size_t n = pn_recv(link, msg, 1024);
if (n == PN_EOS) {
pn_advance(link);
pn_disposition(delivery, PN_ACCEPTED);
pn_settle(delivery);
if (!--ctx->recv_count) {
pn_link_close(link);
}
break;
} else if (!ctx->quiet) {
pn_print_data(msg, n);
}
}
if (!ctx->quiet) printf("\"\n");
if (pn_credit(link) < ctx->low && pn_credit(link) < ctx->recv_count) {
pn_flow(link, (ctx->recv_count < ctx->high ? ctx->recv_count : ctx->high) - pn_credit(link));
}
}
if (pn_updated(delivery)) {
if (!ctx->quiet) printf("disposition for %s: %u\n", tagstr, pn_remote_disposition(delivery));
pn_clear(delivery);
pn_settle(delivery);
if (!--ctx->send_count) {
pn_link_close(link);
}
}
delivery = pn_work_next(delivery);
}
if (!ctx->send_count && !ctx->recv_count) {
printf("closing\n");
// XXX: how do we close the session?
//pn_close((pn_endpoint_t *) ssn);
pn_connection_close(connection);
}
if (pn_connection_state(connection) == (PN_LOCAL_CLOSED | PN_REMOTE_CLOSED)) {
ctx->done = true;
}
}
void server_callback(pn_connector_t *ctor)
{
pn_sasl_t *sasl = pn_connector_sasl(ctor);
while (pn_sasl_state(sasl) != PN_SASL_PASS) {
switch (pn_sasl_state(sasl)) {
case PN_SASL_IDLE:
return;
case PN_SASL_CONF:
pn_sasl_mechanisms(sasl, "PLAIN ANONYMOUS");
pn_sasl_server(sasl);
break;
case PN_SASL_STEP:
{
size_t n = pn_sasl_pending(sasl);
char iresp[n];
pn_sasl_recv(sasl, iresp, n);
printf("%s", pn_sasl_remote_mechanisms(sasl));
printf(" response = ");
pn_print_data(iresp, n);
printf("\n");
pn_sasl_done(sasl, PN_SASL_OK);
pn_connector_set_connection(ctor, pn_connection());
}
break;
case PN_SASL_PASS:
break;
case PN_SASL_FAIL:
return;
}
}
pn_connection_t *conn = pn_connector_connection(ctor);
struct server_context *ctx = pn_connector_context(ctor);
char tagstr[1024];
char msg[10*1024];
char data[ctx->size + 16];
for (int i = 0; i < ctx->size; i++) {
msg[i] = 'x';
}
size_t ndata = pn_message_data(data, ctx->size + 16, msg, ctx->size);
if (pn_connection_state(conn) == (PN_LOCAL_UNINIT | PN_REMOTE_ACTIVE)) {
pn_connection_open(conn);
}
pn_session_t *ssn = pn_session_head(conn, PN_LOCAL_UNINIT | PN_REMOTE_ACTIVE);
while (ssn) {
pn_session_open(ssn);
ssn = pn_session_next(ssn, PN_LOCAL_UNINIT | PN_REMOTE_ACTIVE);
}
pn_link_t *link = pn_link_head(conn, PN_LOCAL_UNINIT | PN_REMOTE_ACTIVE);
while (link) {
printf("%s, %s\n", pn_remote_source(link), pn_remote_target(link));
pn_set_source(link, pn_remote_source(link));
pn_set_target(link, pn_remote_target(link));
pn_link_open(link);
if (pn_is_receiver(link)) {
pn_flow(link, 100);
} else {
pn_delivery(link, pn_dtag("blah", 4));
}
link = pn_link_next(link, PN_LOCAL_UNINIT | PN_REMOTE_ACTIVE);
}
pn_delivery_t *delivery = pn_work_head(conn);
while (delivery)
{
pn_delivery_tag_t tag = pn_delivery_tag(delivery);
pn_quote_data(tagstr, 1024, tag.bytes, tag.size);
pn_link_t *link = pn_link(delivery);
if (pn_readable(delivery)) {
if (!ctx->quiet) {
printf("received delivery: %s\n", tagstr);
printf(" payload = \"");
}
while (true) {
ssize_t n = pn_recv(link, msg, 1024);
if (n == PN_EOS) {
pn_advance(link);
pn_disposition(delivery, PN_ACCEPTED);
break;
} else if (!ctx->quiet) {
pn_print_data(msg, n);
}
}
if (!ctx->quiet) printf("\"\n");
if (pn_credit(link) < 50) pn_flow(link, 100);
} else if (pn_writable(delivery)) {
pn_send(link, data, ndata);
if (pn_advance(link)) {
if (!ctx->quiet) printf("sent delivery: %s\n", tagstr);
char tagbuf[16];
sprintf(tagbuf, "%i", ctx->count++);
pn_delivery(link, pn_dtag(tagbuf, strlen(tagbuf)));
}
}
if (pn_updated(delivery)) {
if (!ctx->quiet) printf("disposition for %s: %u\n", tagstr, pn_remote_disposition(delivery));
pn_settle(delivery);
}
delivery = pn_work_next(delivery);
}
if (pn_connection_state(conn) == (PN_LOCAL_ACTIVE | PN_REMOTE_CLOSED)) {
pn_connection_close(conn);
}
ssn = pn_session_head(conn, PN_LOCAL_ACTIVE | PN_REMOTE_CLOSED);
while (ssn) {
pn_session_close(ssn);
ssn = pn_session_next(ssn, PN_LOCAL_ACTIVE | PN_REMOTE_CLOSED);
}
link = pn_link_head(conn, PN_LOCAL_ACTIVE | PN_REMOTE_CLOSED);
while (link) {
pn_link_close(link);
link = pn_link_next(link, PN_LOCAL_ACTIVE | PN_REMOTE_CLOSED);
}
}
void sender_dispatch(pn_handler_t *h, pn_event_t *event, pn_event_type_t type)
{
sender_context_t *sc = sender_context(h);
switch (type) {
case PN_CONNECTION_INIT:
{
pn_connection_t *conn = pn_event_connection(event);
pn_connection_set_container(conn, pn_string_get(sc->container_id));
pn_connection_set_hostname(conn, pn_string_get(sc->hostname));
pn_connection_open(conn);
pn_session_t *ssn = pn_session(conn);
pn_session_open(ssn);
pn_link_t *snd = pn_sender(ssn, "sender");
const char *path = pn_url_get_path(sc->send_url);
if (path && strlen(path)) {
pn_terminus_set_address(pn_link_target(snd), path);
pn_terminus_set_address(pn_link_source(snd), path);
}
pn_link_open(snd);
}
break;
case PN_LINK_FLOW:
{
pn_link_t *snd = pn_event_link(event);
while (pn_link_credit(snd) > 0 && sc->sent < sc->opts->msg_count) {
if (sc->sent == 0)
statistics_start(sc->stats);
char tag[8];
void *ptr = &tag;
*((uint64_t *) ptr) = sc->sent;
pn_delivery_t *dlv = pn_delivery(snd, pn_dtag(tag, 8));
// setup the message to send
pn_message_t *msg = sc->message;
pn_message_set_address(msg, sc->opts->targets.addresses[0]);
sc->id.u.as_ulong = sc->sent;
pn_message_set_correlation_id(msg, sc->id);
pn_message_set_creation_time(msg, msgr_now());
size_t size = sc->encoded_data_size;
int err = pn_message_encode(msg, sc->encoded_data, &size);
check(err == 0, "message encoding error");
pn_link_send(snd, sc->encoded_data, size);
pn_delivery_settle(dlv);
sc->sent++;
}
if (sc->sent == sc->opts->msg_count && !sc->opts->get_replies) {
pn_link_close(snd);
pn_connection_t *conn = pn_event_connection(event);
pn_connection_close(conn);
}
}
break;
case PN_LINK_INIT:
{
pn_link_t *link = pn_event_link(event);
if (pn_link_is_receiver(link)) {
// Response messages link. Could manage credit and deliveries in this handler but
// a dedicated handler also works.
pn_handler_t *replyto = replyto_handler(sc);
pn_flowcontroller_t *fc = pn_flowcontroller(1024);
pn_handler_add(replyto, fc);
pn_decref(fc);
pn_handshaker_t *handshaker = pn_handshaker();
pn_handler_add(replyto, handshaker);
pn_decref(handshaker);
pn_record_t *record = pn_link_attachments(link);
pn_record_set_handler(record, replyto);
pn_decref(replyto);
}
}
break;
case PN_CONNECTION_LOCAL_CLOSE:
{
statistics_report(sc->stats, sc->sent, sc->received);
}
break;
default:
break;
}
}
/* Process each event posted by the reactor.
*/
static void event_handler(pn_handler_t *handler,
pn_event_t *event,
pn_event_type_t type)
{
app_data_t *data = GET_APP_DATA(handler);
switch (type) {
case PN_CONNECTION_INIT: {
// Create and open all the endpoints needed to send a message
//
pn_connection_t *conn;
pn_session_t *ssn;
pn_link_t *sender;
conn = pn_event_connection(event);
pn_connection_open(conn);
ssn = pn_session(conn);
pn_session_open(ssn);
sender = pn_sender(ssn, "MySender");
// we do not wait for ack until the last message
pn_link_set_snd_settle_mode(sender, PN_SND_MIXED);
if (!data->anon) {
pn_terminus_set_address(pn_link_target(sender), data->target);
}
pn_link_open(sender);
} break;
case PN_LINK_FLOW: {
// the remote has given us some credit, now we can send messages
//
static long tag = 0; // a simple tag generator
pn_delivery_t *delivery;
pn_link_t *sender = pn_event_link(event);
int credit = pn_link_credit(sender);
while (credit > 0 && data->count > 0) {
--credit;
--data->count;
++tag;
delivery = pn_delivery(sender,
pn_dtag((const char *)&tag, sizeof(tag)));
pn_link_send(sender, data->msg_data, data->msg_len);
pn_link_advance(sender);
if (data->count > 0) {
// send pre-settled until the last one, then wait for an ack on
// the last sent message. This allows the sender to send
// messages as fast as possible and then exit when the consumer
// has dealt with the last one.
//
pn_delivery_settle(delivery);
}
}
} break;
case PN_DELIVERY: {
// Since the example sends all messages but the last pre-settled
// (pre-acked), only the last message's delivery will get updated with
// the remote state (acked/nacked).
//
pn_delivery_t *dlv = pn_event_delivery(event);
if (pn_delivery_updated(dlv) && pn_delivery_remote_state(dlv)) {
uint64_t rs = pn_delivery_remote_state(dlv);
int done = 1;
switch (rs) {
case PN_RECEIVED:
// This is not a terminal state - it is informational, and the
// peer is still processing the message.
done = 0;
break;
case PN_ACCEPTED:
pn_delivery_settle(dlv);
if (!quiet) fprintf(stdout, "Send complete!\n");
break;
case PN_REJECTED:
case PN_RELEASED:
case PN_MODIFIED:
pn_delivery_settle(dlv);
fprintf(stderr, "Message not accepted - code:%lu\n", (unsigned long)rs);
break;
default:
// ??? no other terminal states defined, so ignore anything else
pn_delivery_settle(dlv);
fprintf(stderr, "Unknown delivery failure - code=%lu\n", (unsigned long)rs);
break;
}
if (done) {
// initiate clean shutdown of the endpoints
pn_link_t *link = pn_delivery_link(dlv);
pn_session_t *ssn = pn_link_session(link);
pn_link_close(link);
pn_session_close(ssn);
pn_connection_close(pn_session_connection(ssn));
}
}
} break;
case PN_TRANSPORT_ERROR: {
// The connection to the peer failed.
//
pn_transport_t *tport = pn_event_transport(event);
pn_condition_t *cond = pn_transport_condition(tport);
fprintf(stderr, "Network transport failed!\n");
if (pn_condition_is_set(cond)) {
const char *name = pn_condition_get_name(cond);
const char *desc = pn_condition_get_description(cond);
fprintf(stderr, " Error: %s Description: %s\n",
(name) ? name : "<error name not provided>",
(desc) ? desc : "<no description provided>");
}
// pn_reactor_process() will exit with a false return value, stopping
// the main loop.
} break;
default:
break;
}
}
