static void test_atreadeof(abts_case *tc, void *data)
{
apr_status_t rv;
apr_socket_t *sock;
apr_socket_t *sock2;
apr_proc_t proc;
apr_size_t length = STRLEN;
char datastr[STRLEN];
int atreadeof = -1;
sock = setup_socket(tc);
if (!sock) return;
launch_child(tc, &proc, "write", p);
rv = apr_socket_accept(&sock2, sock, p);
APR_ASSERT_SUCCESS(tc, "Problem with receiving connection", rv);
/* Check that the remote socket is still open */
rv = apr_socket_atreadeof(sock2, &atreadeof);
APR_ASSERT_SUCCESS(tc, "Determine whether at EOF, #1", rv);
ABTS_INT_EQUAL(tc, 0, atreadeof);
memset(datastr, 0, STRLEN);
apr_socket_recv(sock2, datastr, &length);
/* Make sure that the server received the data we sent */
ABTS_STR_EQUAL(tc, DATASTR, datastr);
ABTS_SIZE_EQUAL(tc, strlen(datastr), wait_child(tc, &proc));
/* The child is dead, so should be the remote socket */
rv = apr_socket_atreadeof(sock2, &atreadeof);
APR_ASSERT_SUCCESS(tc, "Determine whether at EOF, #2", rv);
ABTS_INT_EQUAL(tc, 1, atreadeof);
rv = apr_socket_close(sock2);
APR_ASSERT_SUCCESS(tc, "Problem closing connected socket", rv);
launch_child(tc, &proc, "close", p);
rv = apr_socket_accept(&sock2, sock, p);
APR_ASSERT_SUCCESS(tc, "Problem with receiving connection", rv);
/* The child closed the socket as soon as it could... */
rv = apr_socket_atreadeof(sock2, &atreadeof);
APR_ASSERT_SUCCESS(tc, "Determine whether at EOF, #3", rv);
if (!atreadeof) { /* ... but perhaps not yet; wait a moment */
apr_sleep(apr_time_from_msec(5));
rv = apr_socket_atreadeof(sock2, &atreadeof);
APR_ASSERT_SUCCESS(tc, "Determine whether at EOF, #4", rv);
}
ABTS_INT_EQUAL(tc, 1, atreadeof);
wait_child(tc, &proc);
rv = apr_socket_close(sock2);
APR_ASSERT_SUCCESS(tc, "Problem closing connected socket", rv);
rv = apr_socket_close(sock);
APR_ASSERT_SUCCESS(tc, "Problem closing socket", rv);
}
void zmq::ipc_listener_t::in_event ()
{
fd_t fd = accept ();
// If connection was reset by the peer in the meantime, just ignore it.
// TODO: Handle specific errors like ENFILE/EMFILE etc.
if (fd == retired_fd) {
socket->monitor_event (ZMQ_EVENT_ACCEPT_FAILED, endpoint.c_str(), zmq_errno());
return;
}
// Create the engine object for this connection.
stream_engine_t *engine = new (std::nothrow) stream_engine_t (fd, options);
alloc_assert (engine);
// Choose I/O thread to run connecter in. Given that we are already
// running in an I/O thread, there must be at least one available.
io_thread_t *io_thread = choose_io_thread (options.affinity);
zmq_assert (io_thread);
// Create and launch a session object.
session_base_t *session = session_base_t::create (io_thread, false, socket,
options, NULL);
errno_assert (session);
session->inc_seqnum ();
launch_child (session);
send_attach (session, engine, false);
socket->monitor_event (ZMQ_EVENT_ACCEPTED, endpoint.c_str(), fd);
}
static void test_recv(abts_case *tc, void *data)
{
apr_status_t rv;
apr_socket_t *sock;
apr_socket_t *sock2;
apr_proc_t proc;
int protocol;
apr_size_t length = STRLEN;
char datastr[STRLEN];
sock = setup_socket(tc);
if (!sock) return;
launch_child(tc, &proc, "write", p);
rv = apr_socket_accept(&sock2, sock, p);
APR_ASSERT_SUCCESS(tc, "Problem with receiving connection", rv);
apr_socket_protocol_get(sock2, &protocol);
ABTS_INT_EQUAL(tc, APR_PROTO_TCP, protocol);
memset(datastr, 0, STRLEN);
apr_socket_recv(sock2, datastr, &length);
/* Make sure that the server received the data we sent */
ABTS_STR_EQUAL(tc, DATASTR, datastr);
ABTS_SIZE_EQUAL(tc, strlen(datastr), wait_child(tc, &proc));
rv = apr_socket_close(sock2);
APR_ASSERT_SUCCESS(tc, "Problem closing connected socket", rv);
rv = apr_socket_close(sock);
APR_ASSERT_SUCCESS(tc, "Problem closing socket", rv);
}
static void test_timeout(abts_case *tc, void *data)
{
apr_status_t rv;
apr_socket_t *sock;
apr_socket_t *sock2;
apr_proc_t proc;
int protocol;
int exit;
sock = setup_socket(tc);
if (!sock) return;
launch_child(tc, &proc, "read", p);
rv = apr_socket_accept(&sock2, sock, p);
APR_ASSERT_SUCCESS(tc, "Problem with receiving connection", rv);
apr_socket_protocol_get(sock2, &protocol);
ABTS_INT_EQUAL(tc, APR_PROTO_TCP, protocol);
exit = wait_child(tc, &proc);
ABTS_INT_EQUAL(tc, SOCKET_TIMEOUT, exit);
/* We didn't write any data, so make sure the child program returns
* an error.
*/
rv = apr_socket_close(sock2);
APR_ASSERT_SUCCESS(tc, "Problem closing connected socket", rv);
rv = apr_socket_close(sock);
APR_ASSERT_SUCCESS(tc, "Problem closing socket", rv);
}
static void test_send(abts_case *tc, void *data)
{
apr_status_t rv;
apr_socket_t *sock;
apr_socket_t *sock2;
apr_proc_t proc;
int protocol;
apr_size_t length;
sock = setup_socket(tc);
if (!sock) return;
launch_child(tc, &proc, "read", p);
rv = apr_socket_accept(&sock2, sock, p);
APR_ASSERT_SUCCESS(tc, "Problem with receiving connection", rv);
apr_socket_protocol_get(sock2, &protocol);
ABTS_INT_EQUAL(tc, APR_PROTO_TCP, protocol);
length = strlen(DATASTR);
apr_socket_send(sock2, DATASTR, &length);
/* Make sure that the client received the data we sent */
ABTS_SIZE_EQUAL(tc, strlen(DATASTR), wait_child(tc, &proc));
rv = apr_socket_close(sock2);
APR_ASSERT_SUCCESS(tc, "Problem closing connected socket", rv);
rv = apr_socket_close(sock);
APR_ASSERT_SUCCESS(tc, "Problem closing socket", rv);
}
int zmq::socket_base_t::bind (const char *addr_)
{
if (unlikely (ctx_terminated)) {
errno = ETERM;
return -1;
}
// Parse addr_ string.
std::string protocol;
std::string address;
int rc = parse_uri (addr_, protocol, address);
if (rc != 0)
return -1;
rc = check_protocol (protocol);
if (rc != 0)
return -1;
if (protocol == "inproc" || protocol == "sys") {
endpoint_t endpoint = {this, options};
return register_endpoint (addr_, endpoint);
}
if (protocol == "tcp" || protocol == "ipc") {
// Choose I/O thread to run the listerner in.
io_thread_t *io_thread = choose_io_thread (options.affinity);
if (!io_thread) {
errno = EMTHREAD;
return -1;
}
// Create and run the listener.
zmq_listener_t *listener = new (std::nothrow) zmq_listener_t (
io_thread, this, options);
alloc_assert (listener);
int rc = listener->set_address (protocol.c_str(), address.c_str ());
if (rc != 0) {
delete listener;
return -1;
}
launch_child (listener);
return 0;
}
if (protocol == "pgm" || protocol == "epgm") {
// For convenience's sake, bind can be used interchageable with
// connect for PGM and EPGM transports.
return connect (addr_);
}
zmq_assert (false);
return -1;
}
void ensure_handlers_started() {
struct handler *h = handlers;
while(h) {
struct handler *next = h->next;
if(h->h_type == PERSISTENT) {
if(!launch_child(h)) {
remove_handler(h);
}
}
h = next;
}
}
void broadcast(struct message *m, fd_set *writefds) {
struct handler *h = handlers;
while(h) {
if(h->h_type == PERSISTENT) {
char *buff;
switch(h->i_type) {
case JSON:
buff = message_to_json(m);
if(! (ensure_write(h->fdout, buff, strlen(buff))
&& ensure_write(h->fdout, "\n", 1))) {
fprintf(stderr, "Failed to write to handler %s\n", h->command);
}
break;
case RAW:
buff = message_to_IRC(m);
break;
}
}
else if(h->h_type == TRANSIENT) {
kill_child(h);
launch_child(h);
char *buff;
switch(h->i_type) {
case JSON:
buff = message_to_json(m);
if(! (ensure_write(h->fdout, buff, strlen(buff))
&& ensure_write(h->fdout, "\n", 1))) {
fprintf(stderr, "Failed to write to handler %s\n", h->command);
}
close(h->fdout);
break;
case RAW:
buff = message_to_IRC(m);
if( ! ensure_write(h->fdout, buff, strlen(buff))) {
fprintf(stderr, "Failed to write to handler %s\n", h->command);
}
close(h->fdout);
break;
}
}
h = h->next;
}
}
void zmq::zmq_listener_t::in_event ()
{
fd_t fd = tcp_listener.accept ();
// If connection was reset by the peer in the meantime, just ignore it.
// TODO: Handle specific errors like ENFILE/EMFILE etc.
if (fd == retired_fd)
return;
// Choose I/O thread to run connecter in. Given that we are already
// running in an I/O thread, there must be at least one available.
io_thread_t *io_thread = choose_io_thread (options.affinity);
zmq_assert (io_thread);
// Create and launch an init object.
zmq_init_t *init = new (std::nothrow) zmq_init_t (io_thread, socket,
NULL, fd, options);
alloc_assert (init);
launch_child (init);
}
void zmq::vmci_listener_t::in_event ()
{
fd_t fd = accept ();
// If connection was reset by the peer in the meantime, just ignore it.
if (fd == retired_fd) {
socket->event_accept_failed (endpoint, zmq_errno());
return;
}
tune_vmci_buffer_size (this->get_ctx (), fd, options.vmci_buffer_size, options.vmci_buffer_min_size, options.vmci_buffer_max_size);
if (options.vmci_connect_timeout > 0)
{
#if defined ZMQ_HAVE_WINDOWS
tune_vmci_connect_timeout (this->get_ctx (), fd, options.vmci_connect_timeout);
#else
struct timeval timeout = {0, options.vmci_connect_timeout * 1000};
tune_vmci_connect_timeout (this->get_ctx (), fd, timeout);
#endif
}
// Create the engine object for this connection.
stream_engine_t *engine = new (std::nothrow)
stream_engine_t (fd, options, endpoint);
alloc_assert (engine);
// Choose I/O thread to run connecter in. Given that we are already
// running in an I/O thread, there must be at least one available.
io_thread_t *io_thread = choose_io_thread (options.affinity);
zmq_assert (io_thread);
// Create and launch a session object.
session_base_t *session = session_base_t::create (io_thread, false, socket,
options, NULL);
errno_assert (session);
session->inc_seqnum ();
launch_child (session);
send_attach (session, engine, false);
socket->event_accepted (endpoint, fd);
}
void zmq::tcp_listener_t::in_event ()
{
fd_t fd = accept ();
// If connection was reset by the peer in the meantime, just ignore it.
// TODO: Handle specific errors like ENFILE/EMFILE etc.
if (fd == retired_fd) {
socket->event_accept_failed (endpoint, zmq_errno ());
return;
}
int rc = tune_tcp_socket (fd);
rc = rc
| tune_tcp_keepalives (
fd, options.tcp_keepalive, options.tcp_keepalive_cnt,
options.tcp_keepalive_idle, options.tcp_keepalive_intvl);
rc = rc | tune_tcp_maxrt (fd, options.tcp_maxrt);
if (rc != 0) {
socket->event_accept_failed (endpoint, zmq_errno ());
return;
}
// Create the engine object for this connection.
stream_engine_t *engine =
new (std::nothrow) stream_engine_t (fd, options, endpoint);
alloc_assert (engine);
// Choose I/O thread to run connecter in. Given that we are already
// running in an I/O thread, there must be at least one available.
io_thread_t *io_thread = choose_io_thread (options.affinity);
zmq_assert (io_thread);
// Create and launch a session object.
session_base_t *session =
session_base_t::create (io_thread, false, socket, options, NULL);
errno_assert (session);
session->inc_seqnum ();
launch_child (session);
send_attach (session, engine, false);
socket->event_accepted (endpoint, (int) fd);
}
void zmq::socket_base_t::add_endpoint (const char *addr_, own_t *endpoint_)
{
// Activate the session. Make it a child of this socket.
launch_child (endpoint_);
endpoints.insert (std::make_pair (std::string (addr_), endpoint_));
}
void zmq::socket_base_t::add_endpoint (const char *addr_, own_t *endpoint_, pipe_t *pipe)
{
// Activate the session. Make it a child of this socket.
launch_child (endpoint_);
endpoints.insert (endpoints_t::value_type (std::string (addr_), endpoint_pipe_t(endpoint_, pipe)));
}
int zmq::socket_base_t::connect (const char *addr_)
{
if (unlikely (ctx_terminated)) {
errno = ETERM;
return -1;
}
// Parse addr_ string.
std::string protocol;
std::string address;
int rc = parse_uri (addr_, protocol, address);
if (rc != 0)
return -1;
rc = check_protocol (protocol);
if (rc != 0)
return -1;
if (protocol == "inproc" || protocol == "sys") {
// TODO: inproc connect is specific with respect to creating pipes
// as there's no 'reconnect' functionality implemented. Once that
// is in place we should follow generic pipe creation algorithm.
// Find the peer endpoint.
endpoint_t peer = find_endpoint (addr_);
if (!peer.socket)
return -1;
reader_t *inpipe_reader = NULL;
writer_t *inpipe_writer = NULL;
reader_t *outpipe_reader = NULL;
writer_t *outpipe_writer = NULL;
// The total HWM for an inproc connection should be the sum of
// the binder's HWM and the connector's HWM. (Similarly for the
// SWAP.)
int64_t hwm;
if (options.hwm == 0 || peer.options.hwm == 0)
hwm = 0;
else
hwm = options.hwm + peer.options.hwm;
int64_t swap;
if (options.swap == 0 && peer.options.swap == 0)
swap = 0;
else
swap = options.swap + peer.options.swap;
// Create inbound pipe, if required.
if (options.requires_in)
create_pipe (this, peer.socket, hwm, swap,
&inpipe_reader, &inpipe_writer);
// Create outbound pipe, if required.
if (options.requires_out)
create_pipe (peer.socket, this, hwm, swap,
&outpipe_reader, &outpipe_writer);
// Attach the pipes to this socket object.
attach_pipes (inpipe_reader, outpipe_writer, peer.options.identity);
// Attach the pipes to the peer socket. Note that peer's seqnum
// was incremented in find_endpoint function. We don't need it
// increased here.
send_bind (peer.socket, outpipe_reader, inpipe_writer,
options.identity, false);
return 0;
}
// Choose the I/O thread to run the session in.
io_thread_t *io_thread = choose_io_thread (options.affinity);
if (!io_thread) {
errno = EMTHREAD;
return -1;
}
// Create session.
connect_session_t *session = new (std::nothrow) connect_session_t (
io_thread, this, options, protocol.c_str (), address.c_str ());
alloc_assert (session);
// If 'immediate connect' feature is required, we'll create the pipes
// to the session straight away. Otherwise, they'll be created by the
// session once the connection is established.
if (options.immediate_connect) {
reader_t *inpipe_reader = NULL;
writer_t *inpipe_writer = NULL;
reader_t *outpipe_reader = NULL;
writer_t *outpipe_writer = NULL;
// Create inbound pipe, if required.
if (options.requires_in)
create_pipe (this, session, options.hwm, options.swap,
&inpipe_reader, &inpipe_writer);
// Create outbound pipe, if required.
if (options.requires_out)
create_pipe (session, this, options.hwm, options.swap,
&outpipe_reader, &outpipe_writer);
// Attach the pipes to the socket object.
attach_pipes (inpipe_reader, outpipe_writer, blob_t ());
// Attach the pipes to the session object.
session->attach_pipes (outpipe_reader, inpipe_writer, blob_t ());
}
// Activate the session. Make it a child of this socket.
launch_child (session);
return 0;
}
int zmq::socket_base_t::bind (const char *addr_)
{
if (unlikely (ctx_terminated)) {
errno = ETERM;
return -1;
}
// Parse addr_ string.
std::string protocol;
std::string address;
int rc = parse_uri (addr_, protocol, address);
if (rc != 0)
return -1;
rc = check_protocol (protocol);
if (rc != 0)
return -1;
if (protocol == "inproc" || protocol == "sys") {
endpoint_t endpoint = {this, options};
return register_endpoint (addr_, endpoint);
}
if (protocol == "pgm" || protocol == "epgm") {
// For convenience's sake, bind can be used interchageable with
// connect for PGM and EPGM transports.
return connect (addr_);
}
// Remaining trasnports require to be run in an I/O thread, so at this
// point we'll choose one.
io_thread_t *io_thread = choose_io_thread (options.affinity);
if (!io_thread) {
errno = EMTHREAD;
return -1;
}
if (protocol == "tcp") {
tcp_listener_t *listener = new (std::nothrow) tcp_listener_t (
io_thread, this, options);
alloc_assert (listener);
int rc = listener->set_address (address.c_str ());
if (rc != 0) {
delete listener;
return -1;
}
launch_child (listener);
return 0;
}
#if !defined ZMQ_HAVE_WINDOWS && !defined ZMQ_HAVE_OPENVMS
if (protocol == "ipc") {
ipc_listener_t *listener = new (std::nothrow) ipc_listener_t (
io_thread, this, options);
alloc_assert (listener);
int rc = listener->set_address (address.c_str ());
if (rc != 0) {
delete listener;
return -1;
}
launch_child (listener);
return 0;
}
#endif
zmq_assert (false);
return -1;
}
void zmq::session_base_t::start_connecting (bool wait_)
{
zmq_assert (active);
// Choose I/O thread to run connecter in. Given that we are already
// running in an I/O thread, there must be at least one available.
io_thread_t *io_thread = choose_io_thread (options.affinity);
zmq_assert (io_thread);
// Create the connecter object.
if (addr->protocol == "tcp") {
if (!options.socks_proxy_address.empty()) {
address_t *proxy_address = new (std::nothrow)
address_t ("tcp", options.socks_proxy_address);
alloc_assert (proxy_address);
socks_connecter_t *connecter =
new (std::nothrow) socks_connecter_t (
io_thread, this, options, addr, proxy_address, wait_);
alloc_assert (connecter);
launch_child (connecter);
}
else {
tcp_connecter_t *connecter = new (std::nothrow)
tcp_connecter_t (io_thread, this, options, addr, wait_);
alloc_assert (connecter);
launch_child (connecter);
}
return;
}
#if !defined ZMQ_HAVE_WINDOWS && !defined ZMQ_HAVE_OPENVMS
if (addr->protocol == "ipc") {
ipc_connecter_t *connecter = new (std::nothrow) ipc_connecter_t (
io_thread, this, options, addr, wait_);
alloc_assert (connecter);
launch_child (connecter);
return;
}
#endif
#if defined ZMQ_HAVE_TIPC
if (addr->protocol == "tipc") {
tipc_connecter_t *connecter = new (std::nothrow) tipc_connecter_t (
io_thread, this, options, addr, wait_);
alloc_assert (connecter);
launch_child (connecter);
return;
}
#endif
#ifdef ZMQ_HAVE_OPENPGM
// Both PGM and EPGM transports are using the same infrastructure.
if (addr->protocol == "pgm" || addr->protocol == "epgm") {
zmq_assert (options.type == ZMQ_PUB || options.type == ZMQ_XPUB
|| options.type == ZMQ_SUB || options.type == ZMQ_XSUB);
// For EPGM transport with UDP encapsulation of PGM is used.
bool const udp_encapsulation = addr->protocol == "epgm";
// At this point we'll create message pipes to the session straight
// away. There's no point in delaying it as no concept of 'connect'
// exists with PGM anyway.
if (options.type == ZMQ_PUB || options.type == ZMQ_XPUB) {
// PGM sender.
pgm_sender_t *pgm_sender = new (std::nothrow) pgm_sender_t (
io_thread, options);
alloc_assert (pgm_sender);
int rc = pgm_sender->init (udp_encapsulation, addr->address.c_str ());
errno_assert (rc == 0);
send_attach (this, pgm_sender);
}
else {
// PGM receiver.
pgm_receiver_t *pgm_receiver = new (std::nothrow) pgm_receiver_t (
io_thread, options);
alloc_assert (pgm_receiver);
int rc = pgm_receiver->init (udp_encapsulation, addr->address.c_str ());
errno_assert (rc == 0);
send_attach (this, pgm_receiver);
}
return;
}
#endif
#ifdef ZMQ_HAVE_NORM
if (addr->protocol == "norm") {
// At this point we'll create message pipes to the session straight
// away. There's no point in delaying it as no concept of 'connect'
// exists with NORM anyway.
if (options.type == ZMQ_PUB || options.type == ZMQ_XPUB) {
// NORM sender.
norm_engine_t* norm_sender = new (std::nothrow) norm_engine_t(io_thread, options);
alloc_assert (norm_sender);
int rc = norm_sender->init (addr->address.c_str (), true, false);
errno_assert (rc == 0);
send_attach (this, norm_sender);
}
else { // ZMQ_SUB or ZMQ_XSUB
// NORM receiver.
norm_engine_t* norm_receiver = new (std::nothrow) norm_engine_t (io_thread, options);
alloc_assert (norm_receiver);
int rc = norm_receiver->init (addr->address.c_str (), false, true);
errno_assert (rc == 0);
send_attach (this, norm_receiver);
}
return;
}
#endif // ZMQ_HAVE_NORM
zmq_assert (false);
}
int zmq::socket_base_t::connect (const char *addr_)
{
if (unlikely (ctx_terminated)) {
errno = ETERM;
return -1;
}
// Parse addr_ string.
std::string protocol;
std::string address;
int rc = parse_uri (addr_, protocol, address);
if (rc != 0)
return -1;
rc = check_protocol (protocol);
if (rc != 0)
return -1;
if (protocol == "inproc" || protocol == "sys") {
// TODO: inproc connect is specific with respect to creating pipes
// as there's no 'reconnect' functionality implemented. Once that
// is in place we should follow generic pipe creation algorithm.
// Find the peer endpoint.
endpoint_t peer = find_endpoint (addr_);
if (!peer.socket)
return -1;
// The total HWM for an inproc connection should be the sum of
// the binder's HWM and the connector's HWM.
int sndhwm;
int rcvhwm;
if (options.sndhwm == 0 || peer.options.rcvhwm == 0)
sndhwm = 0;
else
sndhwm = options.sndhwm + peer.options.rcvhwm;
if (options.rcvhwm == 0 || peer.options.sndhwm == 0)
rcvhwm = 0;
else
rcvhwm = options.rcvhwm + peer.options.sndhwm;
// Create a bi-directional pipe to connect the peers.
object_t *parents [2] = {this, peer.socket};
pipe_t *pipes [2] = {NULL, NULL};
int hwms [2] = {sndhwm, rcvhwm};
bool delays [2] = {options.delay_on_disconnect, options.delay_on_close};
int rc = pipepair (parents, pipes, hwms, delays);
errno_assert (rc == 0);
// Attach local end of the pipe to this socket object.
attach_pipe (pipes [0]);
// If required, send the identity of the local socket to the peer.
if (options.send_identity) {
msg_t id;
rc = id.init_size (options.identity_size);
zmq_assert (rc == 0);
memcpy (id.data (), options.identity, options.identity_size);
id.set_flags (msg_t::identity);
bool written = pipes [0]->write (&id);
zmq_assert (written);
}
// Attach remote end of the pipe to the peer socket. Note that peer's
// seqnum was incremented in find_endpoint function. We don't need it
// increased here.
send_bind (peer.socket, pipes [1], false);
return 0;
}
// Choose the I/O thread to run the session in.
io_thread_t *io_thread = choose_io_thread (options.affinity);
if (!io_thread) {
errno = EMTHREAD;
return -1;
}
// Create session.
session_base_t *session = session_base_t::create (io_thread, true, this,
options, protocol.c_str (), address.c_str ());
errno_assert (session);
// Create a bi-directional pipe.
object_t *parents [2] = {this, session};
pipe_t *pipes [2] = {NULL, NULL};
int hwms [2] = {options.sndhwm, options.rcvhwm};
bool delays [2] = {options.delay_on_disconnect, options.delay_on_close};
rc = pipepair (parents, pipes, hwms, delays);
errno_assert (rc == 0);
// PGM does not support subscription forwarding; ask for all data to be
// sent to this pipe.
bool icanhasall = false;
if (protocol == "pgm" || protocol == "epgm")
icanhasall = true;
// Attach local end of the pipe to the socket object.
attach_pipe (pipes [0], icanhasall);
// Attach remote end of the pipe to the session object later on.
session->attach_pipe (pipes [1]);
// Activate the session. Make it a child of this socket.
launch_child (session);
return 0;
}
int zmq::socket_base_t::connect (const char *addr_)
{
if (unlikely (ctx_terminated)) {
errno = ETERM;
return -1;
}
// Parse addr_ string.
std::string protocol;
std::string address;
int rc = parse_uri (addr_, protocol, address);
if (rc != 0)
return -1;
// Checks that protocol is valid and supported on this system
rc = check_protocol (protocol);
if (rc != 0)
return -1;
// Parsed address for validation
sockaddr_storage addr;
socklen_t addr_len;
if (protocol == "tcp")
rc = resolve_ip_hostname (&addr, &addr_len, address.c_str ());
else
if (protocol == "ipc")
rc = resolve_local_path (&addr, &addr_len, address.c_str ());
if (rc != 0)
return -1;
if (protocol == "inproc" || protocol == "sys") {
// TODO: inproc connect is specific with respect to creating pipes
// as there's no 'reconnect' functionality implemented. Once that
// is in place we should follow generic pipe creation algorithm.
// Find the peer endpoint.
endpoint_t peer = find_endpoint (addr_);
if (!peer.socket)
return -1;
// The total HWM for an inproc connection should be the sum of
// the binder's HWM and the connector's HWM.
int sndhwm;
int rcvhwm;
if (options.sndhwm == 0 || peer.options.rcvhwm == 0)
sndhwm = 0;
else
sndhwm = options.sndhwm + peer.options.rcvhwm;
if (options.rcvhwm == 0 || peer.options.sndhwm == 0)
rcvhwm = 0;
else
rcvhwm = options.rcvhwm + peer.options.sndhwm;
// Create a bi-directional pipe to connect the peers.
object_t *parents [2] = {this, peer.socket};
pipe_t *pipes [2] = {NULL, NULL};
int hwms [2] = {sndhwm, rcvhwm};
bool delays [2] = {options.delay_on_disconnect, options.delay_on_close};
int rc = pipepair (parents, pipes, hwms, delays);
errno_assert (rc == 0);
// Attach local end of the pipe to this socket object.
attach_pipe (pipes [0], peer.options.identity);
// Attach remote end of the pipe to the peer socket. Note that peer's
// seqnum was incremented in find_endpoint function. We don't need it
// increased here.
send_bind (peer.socket, pipes [1], options.identity, false);
return 0;
}
// Choose the I/O thread to run the session in.
io_thread_t *io_thread = choose_io_thread (options.affinity);
if (!io_thread) {
errno = EMTHREAD;
return -1;
}
// Create session.
connect_session_t *session = new (std::nothrow) connect_session_t (
io_thread, this, options, protocol.c_str (), address.c_str ());
alloc_assert (session);
// If 'immediate connect' feature is required, we'll create the pipes
// to the session straight away. Otherwise, they'll be created by the
// session once the connection is established.
if (options.immediate_connect) {
// Create a bi-directional pipe.
object_t *parents [2] = {this, session};
pipe_t *pipes [2] = {NULL, NULL};
int hwms [2] = {options.sndhwm, options.rcvhwm};
bool delays [2] = {options.delay_on_disconnect, options.delay_on_close};
int rc = pipepair (parents, pipes, hwms, delays);
errno_assert (rc == 0);
// Attach local end of the pipe to the socket object.
attach_pipe (pipes [0], blob_t ());
// Attach remote end of the pipe to the session object later on.
session->attach_pipe (pipes [1]);
}
// Activate the session. Make it a child of this socket.
launch_child (session);
return 0;
}
void zmq::connect_session_t::start_connecting (bool wait_)
{
// Choose I/O thread to run connecter in. Given that we are already
// running in an I/O thread, there must be at least one available.
io_thread_t *io_thread = choose_io_thread (options.affinity);
zmq_assert (io_thread);
// Create the connecter object.
// Both TCP and IPC transports are using the same infrastructure.
if (protocol == "tcp" || protocol == "ipc") {
zmq_connecter_t *connecter = new (std::nothrow) zmq_connecter_t (
io_thread, this, options, protocol.c_str (), address.c_str (),
wait_);
alloc_assert (connecter);
launch_child (connecter);
return;
}
#if defined ZMQ_HAVE_OPENPGM
// Both PGM and EPGM transports are using the same infrastructure.
if (protocol == "pgm" || protocol == "epgm") {
// For EPGM transport with UDP encapsulation of PGM is used.
bool udp_encapsulation = (protocol == "epgm");
// At this point we'll create message pipes to the session straight
// away. There's no point in delaying it as no concept of 'connect'
// exists with PGM anyway.
if (options.type == ZMQ_PUB || options.type == ZMQ_XPUB) {
// PGM sender.
pgm_sender_t *pgm_sender = new (std::nothrow) pgm_sender_t (
io_thread, options);
alloc_assert (pgm_sender);
int rc = pgm_sender->init (udp_encapsulation, address.c_str ());
zmq_assert (rc == 0);
send_attach (this, pgm_sender, blob_t ());
}
else if (options.type == ZMQ_SUB || options.type == ZMQ_XSUB) {
// PGM receiver.
pgm_receiver_t *pgm_receiver = new (std::nothrow) pgm_receiver_t (
io_thread, options);
alloc_assert (pgm_receiver);
int rc = pgm_receiver->init (udp_encapsulation, address.c_str ());
zmq_assert (rc == 0);
send_attach (this, pgm_receiver, blob_t ());
}
else
zmq_assert (false);
return;
}
#endif
zmq_assert (false);
}
int string_launch_child(struct state *s, char *string)
{
char **vector, **tmp;
char *t;
unsigned int i, v, j, d, ws;
int run;
vector = NULL;
j = 0;
i = 0;
ws = 1;
v = 0;
for(run = 1; run > 0;){
switch(string[i]){
case '\0' :
run = 0;
/* fall */
case ' ' :
case '\t' :
if(ws == 0){
ws = 1;
tmp = realloc(vector, sizeof(char *) * (v + 2));
if(tmp == NULL){
run = (-1);
} else {
vector = tmp;
d = i - j;
t = malloc(sizeof(char) * (d + 1));
if(t == NULL){
run = (-1);
} else {
strncpy(t, string + j, d);
t[d] = '\0';
vector[v] = t;
v++;
vector[v] = NULL;
}
}
}
i++;
break;
default :
if(ws){
j = i;
ws = 0;
}
i++;
break;
}
}
if(vector == NULL){
sync_message_katcl(s->s_up, KATCP_LEVEL_ERROR, KCPCON_NAME, "no command found in string <%s>", string);
return -1;
}
if(run < 0){
sync_message_katcl(s->s_up, KATCP_LEVEL_ERROR, KCPCON_NAME, "allocation error while decomposing %s", string);
} else {
#ifdef DEBUG
fprintf(stderr, "have vector <%s ...> of %u entries\n", vector[0], v);
#endif
run = launch_child(s, vector);
}
if(vector){
for(i = 0; i < v; i++){
if(vector[i]){
free(vector[i]);
vector[i] = NULL;
}
}
free(vector);
}
return run;
}