static char* test_receive_from_messenger(void *context)
{
nx_allocator_initialize(nx_allocator_default_config());
pn_message_t *pn_msg = pn_message();
pn_message_set_address(pn_msg, "test_addr_1");
nx_buffer_t *buf = nx_allocate_buffer();
size_t size = nx_buffer_capacity(buf);
int result = pn_message_encode(pn_msg, (char*) nx_buffer_cursor(buf), &size);
if (result != 0) return "Error in pn_message_encode";
nx_buffer_insert(buf, size);
nx_message_t *msg = nx_allocate_message();
DEQ_INSERT_TAIL(msg->buffers, buf);
int valid = nx_message_check(msg, NX_DEPTH_ALL);
if (!valid) return "nx_message_check returns 'invalid'";
nx_field_iterator_t *iter = nx_message_field_to(msg);
if (iter == 0) return "Expected an iterator for the 'to' field";
if (!nx_field_iterator_equal(iter, (unsigned char*) "test_addr_1"))
return "Mismatched 'to' field contents";
pn_message_free(pn_msg);
nx_free_message(msg);
nx_allocator_finalize();
return 0;
}
static char* test_insufficient_check_depth(void *context)
{
nx_allocator_initialize(nx_allocator_default_config());
pn_message_t *pn_msg = pn_message();
pn_message_set_address(pn_msg, "test_addr_2");
nx_buffer_t *buf = nx_allocate_buffer();
size_t size = nx_buffer_capacity(buf);
int result = pn_message_encode(pn_msg, (char*) nx_buffer_cursor(buf), &size);
if (result != 0) return "Error in pn_message_encode";
nx_buffer_insert(buf, size);
nx_message_t *msg = nx_allocate_message();
DEQ_INSERT_TAIL(msg->buffers, buf);
int valid = nx_message_check(msg, NX_DEPTH_DELIVERY_ANNOTATIONS);
if (!valid) return "nx_message_check returns 'invalid'";
nx_field_iterator_t *iter = nx_message_field_to(msg);
if (iter) return "Expected no iterator for the 'to' field";
nx_free_message(msg);
nx_allocator_finalize();
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 void test_overflow_error(void)
{
pn_message_t *message = pn_message();
char buf[6];
size_t size = 6;
int err = pn_message_encode(message, buf, &size);
assert(err == PN_OVERFLOW);
assert(pn_message_errno(message) == 0);
pn_message_free(message);
}
void message::encode(std::vector<char> &s) const {
impl().flush();
size_t sz = std::max(s.capacity(), size_t(512));
while (true) {
s.resize(sz);
assert(!s.empty());
int err = pn_message_encode(pn_msg(), const_cast<char*>(&s[0]), &sz);
if (err) {
if (err != PN_OVERFLOW)
check(err);
} else {
s.resize(sz);
return;
}
sz *= 2;
}
}
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 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;
}
}
int main(int argc, char** argv)
{
const char *address = "localhost";
const char *msgtext = "Hello World!";
const char *container = "SendExample";
int c;
pn_message_t *message = NULL;
pn_data_t *body = NULL;
pn_reactor_t *reactor = NULL;
pn_url_t *url = NULL;
pn_connection_t *conn = NULL;
/* Create a handler for the connection's events. event_handler() will be
* called for each event and delete_handler will be called when the
* connection is released. The handler will allocate an app_data_t
* instance which can be accessed when the event_handler is called.
*/
pn_handler_t *handler = pn_handler_new(event_handler,
sizeof(app_data_t),
delete_handler);
/* set up the application data with defaults */
app_data_t *app_data = GET_APP_DATA(handler);
memset(app_data, 0, sizeof(app_data_t));
app_data->count = 1;
app_data->target = "examples";
/* Attach the pn_handshaker() handler. This handler deals with endpoint
* events from the peer so we don't have to.
*/
{
pn_handler_t *handshaker = pn_handshaker();
pn_handler_add(handler, handshaker);
pn_decref(handshaker);
}
/* command line options */
opterr = 0;
while((c = getopt(argc, argv, "i:a:c:t:nhq")) != -1) {
switch(c) {
case 'h': usage(); break;
case 'a': address = optarg; break;
case 'c':
app_data->count = atoi(optarg);
if (app_data->count < 1) usage();
break;
case 't': app_data->target = optarg; break;
case 'n': app_data->anon = 1; break;
case 'i': container = optarg; break;
case 'q': quiet = 1; break;
default:
usage();
break;
}
}
if (optind < argc) msgtext = argv[optind];
// create a single message and pre-encode it so we only have to do that
// once. All transmits will use the same pre-encoded message simply for
// speed.
//
message = pn_message();
pn_message_set_address(message, app_data->target);
body = pn_message_body(message);
pn_data_clear(body);
// This message's body contains a single string
if (pn_data_fill(body, "S", msgtext)) {
fprintf(stderr, "Error building message!\n");
exit(1);
}
pn_data_rewind(body);
{
// encode the message, expanding the encode buffer as needed
//
size_t len = 128;
char *buf = (char *)malloc(len);
int rc = 0;
do {
rc = pn_message_encode(message, buf, &len);
if (rc == PN_OVERFLOW) {
free(buf);
len *= 2;
buf = (char *)malloc(len);
}
} while (rc == PN_OVERFLOW);
app_data->msg_len = len;
app_data->msg_data = buf;
}
pn_decref(message); // message no longer needed
reactor = pn_reactor();
url = pn_url_parse(address);
if (url == NULL) {
fprintf(stderr, "Invalid host address %s\n", address);
exit(1);
}
conn = pn_reactor_connection_to_host(reactor,
pn_url_get_host(url),
pn_url_get_port(url),
handler);
pn_decref(url);
pn_decref(handler);
// the container name should be unique for each client
pn_connection_set_container(conn, container);
// wait up to 5 seconds for activity before returning from
// pn_reactor_process()
pn_reactor_set_timeout(reactor, 5000);
pn_reactor_start(reactor);
while (pn_reactor_process(reactor)) {
/* Returns 'true' until the connection is shut down.
* pn_reactor_process() will return true at least once every 5 seconds
* (due to the timeout). If no timeout was configured,
* pn_reactor_process() returns as soon as it finishes processing all
* pending I/O and events. Once the connection has closed,
* pn_reactor_process() will return false.
*/
}
pn_decref(reactor);
return 0;
}