int nn_binproc_create (void *hint, struct nn_epbase **epbase)
{
int rc;
struct nn_binproc *self;
self = nn_alloc (sizeof (struct nn_binproc), "binproc");
alloc_assert (self);
nn_ins_item_init (&self->item, &nn_binproc_vfptr, hint);
nn_fsm_init_root (&self->fsm, nn_binproc_handler, nn_binproc_shutdown,
nn_epbase_getctx (&self->item.epbase));
self->state = NN_BINPROC_STATE_IDLE;
nn_list_init (&self->sinprocs);
/* Start the state machine. */
nn_fsm_start (&self->fsm);
/* Register the inproc endpoint into a global repository. */
rc = nn_ins_bind (&self->item, nn_binproc_connect);
if (nn_slow (rc < 0)) {
nn_list_term (&self->sinprocs);
/* TODO: Now, this is ugly! We are getting the state machine into
the idle state manually. How should it be done correctly? */
self->fsm.state = 1;
nn_fsm_term (&self->fsm);
nn_ins_item_term (&self->item);
nn_free (self);
return rc;
}
*epbase = &self->item.epbase;
return 0;
}
struct nn_binproc *nn_binproc_create (void *hint)
{
struct nn_binproc *self;
size_t sz;
self = nn_alloc (sizeof (struct nn_binproc), "binproc");
alloc_assert (self);
nn_epbase_init (&self->epbase, &nn_binproc_vfptr, hint);
nn_fsm_init_root (&self->fsm, nn_binproc_handler,
nn_epbase_getctx (&self->epbase));
self->state = NN_BINPROC_STATE_IDLE;
nn_list_init (&self->sinprocs);
nn_list_item_init (&self->item);
sz = sizeof (self->protocol);
nn_epbase_getopt (&self->epbase, NN_SOL_SOCKET, NN_PROTOCOL,
&self->protocol, &sz);
nn_assert (sz == sizeof (self->protocol));
self->connects = 0;
/* Start the state machine. */
nn_fsm_start (&self->fsm);
return self;
}
int nn_bipc_create (void *hint, struct nn_epbase **epbase)
{
struct nn_bipc *self;
/* Allocate the new endpoint object. */
self = nn_alloc (sizeof (struct nn_bipc), "bipc");
alloc_assert (self);
/* Initialise the structure. */
nn_epbase_init (&self->epbase, &nn_bipc_epbase_vfptr, hint);
nn_fsm_init_root (&self->fsm, nn_bipc_handler,
nn_epbase_getctx (&self->epbase));
self->state = NN_BIPC_STATE_IDLE;
nn_usock_init (&self->usock, NN_BIPC_SRC_USOCK, &self->fsm);
self->aipc = NULL;
nn_list_init (&self->aipcs);
/* Start the state machine. */
nn_fsm_start (&self->fsm);
/* Return the base class as an out parameter. */
*epbase = &self->epbase;
return 0;
}
int nn_cinproc_create (struct nn_ep *ep)
{
struct nn_cinproc *self;
self = nn_alloc (sizeof (struct nn_cinproc), "cinproc");
alloc_assert (self);
nn_ep_tran_setup (ep, &nn_cinproc_ops, self);
nn_ins_item_init (&self->item, ep);
nn_fsm_init_root (&self->fsm, nn_cinproc_handler, nn_cinproc_shutdown,
nn_ep_getctx (ep));
self->state = NN_CINPROC_STATE_IDLE;
nn_list_init (&self->sinprocs);
nn_ep_stat_increment (ep, NN_STAT_INPROGRESS_CONNECTIONS, 1);
/* Start the state machine. */
nn_fsm_start (&self->fsm);
/* Register the inproc endpoint into a global repository. */
nn_ins_connect (&self->item, nn_cinproc_connect);
return 0;
}
void nn_req_init (struct nn_req *self,
const struct nn_sockbase_vfptr *vfptr, void *hint)
{
nn_req_handle hndl;
nn_xreq_init (&self->xreq, vfptr, hint);
nn_fsm_init_root (&self->fsm, nn_req_handler, nn_req_shutdown,
nn_sockbase_getctx (&self->xreq.sockbase));
self->state = NN_REQ_STATE_IDLE;
/* Start assigning request IDs beginning with a random number. This way
there should be no key clashes even if the executable is re-started. */
nn_random_generate (&self->lastid, sizeof (self->lastid));
self->task.sent_to = NULL;
nn_msg_init (&self->task.request, 0);
nn_msg_init (&self->task.reply, 0);
nn_timer_init (&self->task.timer, NN_REQ_SRC_RESEND_TIMER, &self->fsm);
self->resend_ivl = NN_REQ_DEFAULT_RESEND_IVL;
/* For now, handle is empty. */
memset (&hndl, 0, sizeof (hndl));
nn_task_init (&self->task, self->lastid, hndl);
/* Start the state machine. */
nn_fsm_start (&self->fsm);
}
static void nn_surveyor_init (struct nn_surveyor *self,
const struct nn_sockbase_vfptr *vfptr, void *hint)
{
nn_xsurveyor_init (&self->xsurveyor, vfptr, hint);
nn_fsm_init_root (&self->fsm, nn_surveyor_handler,
nn_sockbase_getctx (&self->xsurveyor.sockbase));
self->state = NN_SURVEYOR_STATE_IDLE;
/* Start assigning survey IDs beginning with a random number. This way
there should be no key clashes even if the executable is re-started. */
nn_random_generate (&self->surveyid, sizeof (self->surveyid));
nn_timer_init (&self->timer, NN_SURVEYOR_SRC_DEADLINE_TIMER, &self->fsm);
nn_msg_init (&self->tosend, 0);
self->deadline = NN_SURVEYOR_DEFAULT_DEADLINE;
/* Start the state machine. */
nn_fsm_start (&self->fsm);
}
int nn_bipc_create (void *hint, struct nn_epbase **epbase)
{
struct nn_bipc *self;
int reconnect_ivl;
int reconnect_ivl_max;
size_t sz;
/* Allocate the new endpoint object. */
self = nn_alloc (sizeof (struct nn_bipc), "bipc");
alloc_assert (self);
/* Initialise the structure. */
nn_epbase_init (&self->epbase, &nn_bipc_epbase_vfptr, hint);
nn_fsm_init_root (&self->fsm, nn_bipc_handler, nn_bipc_shutdown,
nn_epbase_getctx (&self->epbase));
self->state = NN_BIPC_STATE_IDLE;
sz = sizeof (reconnect_ivl);
nn_epbase_getopt (&self->epbase, NN_SOL_SOCKET, NN_RECONNECT_IVL,
&reconnect_ivl, &sz);
nn_assert (sz == sizeof (reconnect_ivl));
sz = sizeof (reconnect_ivl_max);
nn_epbase_getopt (&self->epbase, NN_SOL_SOCKET, NN_RECONNECT_IVL_MAX,
&reconnect_ivl_max, &sz);
nn_assert (sz == sizeof (reconnect_ivl_max));
if (reconnect_ivl_max == 0)
reconnect_ivl_max = reconnect_ivl;
nn_backoff_init (&self->retry, NN_BIPC_SRC_RECONNECT_TIMER,
reconnect_ivl, reconnect_ivl_max, &self->fsm);
nn_usock_init (&self->usock, NN_BIPC_SRC_USOCK, &self->fsm);
self->aipc = NULL;
nn_list_init (&self->aipcs);
/* Start the state machine. */
nn_fsm_start (&self->fsm);
/* Return the base class as an out parameter. */
*epbase = &self->epbase;
return 0;
}
int nn_cinproc_create (void *hint, struct nn_epbase **epbase)
{
struct nn_cinproc *self;
self = nn_alloc (sizeof (struct nn_cinproc), "cinproc");
alloc_assert (self);
nn_ins_item_init (&self->item, &nn_cinproc_vfptr, hint);
nn_fsm_init_root (&self->fsm, nn_cinproc_handler, nn_cinproc_shutdown,
nn_epbase_getctx (&self->item.epbase));
self->state = NN_CINPROC_STATE_IDLE;
nn_sinproc_init (&self->sinproc, NN_CINPROC_SRC_SINPROC,
&self->item.epbase, &self->fsm);
/* Start the state machine. */
nn_fsm_start (&self->fsm);
/* Register the inproc endpoint into a global repository. */
nn_ins_connect (&self->item, nn_cinproc_connect);
*epbase = &self->item.epbase;
return 0;
}
int nn_cipc_create (struct nn_ep *ep)
{
struct nn_cipc *self;
int reconnect_ivl;
int reconnect_ivl_max;
size_t sz;
/* Allocate the new endpoint object. */
self = nn_alloc (sizeof (struct nn_cipc), "cipc");
alloc_assert (self);
/* Initialise the structure. */
self->ep = ep;
nn_ep_tran_setup (ep, &nn_cipc_ep_ops, self);
nn_fsm_init_root (&self->fsm, nn_cipc_handler, nn_cipc_shutdown,
nn_ep_getctx (ep));
self->state = NN_CIPC_STATE_IDLE;
nn_usock_init (&self->usock, NN_CIPC_SRC_USOCK, &self->fsm);
sz = sizeof (reconnect_ivl);
nn_ep_getopt (ep, NN_SOL_SOCKET, NN_RECONNECT_IVL, &reconnect_ivl, &sz);
nn_assert (sz == sizeof (reconnect_ivl));
sz = sizeof (reconnect_ivl_max);
nn_ep_getopt (ep, NN_SOL_SOCKET, NN_RECONNECT_IVL_MAX,
&reconnect_ivl_max, &sz);
nn_assert (sz == sizeof (reconnect_ivl_max));
if (reconnect_ivl_max == 0)
reconnect_ivl_max = reconnect_ivl;
nn_backoff_init (&self->retry, NN_CIPC_SRC_RECONNECT_TIMER,
reconnect_ivl, reconnect_ivl_max, &self->fsm);
nn_sipc_init (&self->sipc, NN_CIPC_SRC_SIPC, ep, &self->fsm);
/* Start the state machine. */
nn_fsm_start (&self->fsm);
return 0;
}
int nn_btcp_create (void *hint, struct nn_epbase **epbase)
{
int rc;
struct nn_btcp *self;
const char *addr;
const char *end;
const char *pos;
struct sockaddr_storage ss;
size_t sslen;
int ipv4only;
size_t ipv4onlylen;
/* Allocate the new endpoint object. */
self = nn_alloc (sizeof (struct nn_btcp), "btcp");
alloc_assert (self);
/* Initalise the epbase. */
nn_epbase_init (&self->epbase, &nn_btcp_epbase_vfptr, hint);
addr = nn_epbase_getaddr (&self->epbase);
/* Parse the port. */
end = addr + strlen (addr);
pos = strrchr (addr, ':');
if (nn_slow (!pos)) {
nn_epbase_term (&self->epbase);
return -EINVAL;
}
++pos;
rc = nn_port_resolve (pos, end - pos);
if (nn_slow (rc < 0)) {
nn_epbase_term (&self->epbase);
return -EINVAL;
}
/* Check whether IPv6 is to be used. */
ipv4onlylen = sizeof (ipv4only);
nn_epbase_getopt (&self->epbase, NN_SOL_SOCKET, NN_IPV4ONLY,
&ipv4only, &ipv4onlylen);
nn_assert (ipv4onlylen == sizeof (ipv4only));
/* Parse the address. */
rc = nn_iface_resolve (addr, pos - addr - 1, ipv4only, &ss, &sslen);
if (nn_slow (rc < 0)) {
nn_epbase_term (&self->epbase);
return -ENODEV;
}
/* Initialise the structure. */
nn_fsm_init_root (&self->fsm, nn_btcp_handler, nn_btcp_shutdown,
nn_epbase_getctx (&self->epbase));
self->state = NN_BTCP_STATE_IDLE;
nn_usock_init (&self->usock, NN_BTCP_SRC_USOCK, &self->fsm);
self->atcp = NULL;
nn_list_init (&self->atcps);
/* Start the state machine. */
nn_fsm_start (&self->fsm);
/* Return the base class as an out parameter. */
*epbase = &self->epbase;
return 0;
}
/* Initialize a socket. A hold is placed on the initialized socket for
the caller as well. */
int nn_sock_init (struct nn_sock *self, struct nn_socktype *socktype, int fd)
{
int rc;
int i;
/* Make sure that at least one message direction is supported. */
nn_assert (!(socktype->flags & NN_SOCKTYPE_FLAG_NOSEND) ||
!(socktype->flags & NN_SOCKTYPE_FLAG_NORECV));
/* Create the AIO context for the SP socket. */
nn_ctx_init (&self->ctx, nn_global_getpool (), nn_sock_onleave);
/* Initialise the state machine. */
nn_fsm_init_root (&self->fsm, nn_sock_handler,
nn_sock_shutdown, &self->ctx);
self->state = NN_SOCK_STATE_INIT;
/* Open the NN_SNDFD and NN_RCVFD efds. Do so, only if the socket type
supports send/recv, as appropriate. */
if (socktype->flags & NN_SOCKTYPE_FLAG_NOSEND)
memset (&self->sndfd, 0xcd, sizeof (self->sndfd));
else {
rc = nn_efd_init (&self->sndfd);
if (nn_slow (rc < 0))
return rc;
}
if (socktype->flags & NN_SOCKTYPE_FLAG_NORECV)
memset (&self->rcvfd, 0xcd, sizeof (self->rcvfd));
else {
rc = nn_efd_init (&self->rcvfd);
if (nn_slow (rc < 0)) {
if (!(socktype->flags & NN_SOCKTYPE_FLAG_NOSEND))
nn_efd_term (&self->sndfd);
return rc;
}
}
nn_sem_init (&self->termsem);
nn_sem_init (&self->relesem);
if (nn_slow (rc < 0)) {
if (!(socktype->flags & NN_SOCKTYPE_FLAG_NORECV))
nn_efd_term (&self->rcvfd);
if (!(socktype->flags & NN_SOCKTYPE_FLAG_NOSEND))
nn_efd_term (&self->sndfd);
return rc;
}
self->holds = 1; /* Callers hold. */
self->flags = 0;
nn_clock_init (&self->clock);
nn_list_init (&self->eps);
nn_list_init (&self->sdeps);
self->eid = 1;
/* Default values for NN_SOL_SOCKET options. */
self->linger = 1000;
self->sndbuf = 128 * 1024;
self->rcvbuf = 128 * 1024;
self->rcvmaxsize = 1024 * 1024;
self->sndtimeo = -1;
self->rcvtimeo = -1;
self->reconnect_ivl = 100;
self->reconnect_ivl_max = 0;
self->ep_template.sndprio = 8;
self->ep_template.rcvprio = 8;
self->ep_template.ipv4only = 1;
/* Initialize statistic entries */
self->statistics.established_connections = 0;
self->statistics.accepted_connections = 0;
self->statistics.dropped_connections = 0;
self->statistics.broken_connections = 0;
self->statistics.connect_errors = 0;
self->statistics.bind_errors = 0;
self->statistics.accept_errors = 0;
self->statistics.messages_sent = 0;
self->statistics.messages_received = 0;
self->statistics.bytes_sent = 0;
self->statistics.bytes_received = 0;
self->statistics.current_connections = 0;
self->statistics.inprogress_connections = 0;
self->statistics.current_snd_priority = 0;
self->statistics.current_ep_errors = 0;
/* Should be pretty much enough space for just the number */
sprintf(self->socket_name, "%d", fd);
/* The transport-specific options are not initialised immediately,
rather, they are allocated later on when needed. */
for (i = 0; i != NN_MAX_TRANSPORT; ++i)
self->optsets [i] = NULL;
/* Create the specific socket type itself. */
rc = socktype->create ((void*) self, &self->sockbase);
errnum_assert (rc == 0, -rc);
self->socktype = socktype;
/* Launch the state machine. */
nn_ctx_enter (&self->ctx);
nn_fsm_start (&self->fsm);
nn_ctx_leave (&self->ctx);
return 0;
}
int nn_ctcp_create (void *hint, struct nn_epbase **epbase)
{
int rc;
const char *addr;
size_t addrlen;
const char *semicolon;
const char *hostname;
const char *colon;
const char *end;
struct sockaddr_storage ss;
size_t sslen;
int ipv4only;
size_t ipv4onlylen;
struct nn_ctcp *self;
int reconnect_ivl;
int reconnect_ivl_max;
size_t sz;
/* Allocate the new endpoint object. */
self = nn_alloc (sizeof (struct nn_ctcp), "ctcp");
alloc_assert (self);
/* Initalise the endpoint. */
nn_epbase_init (&self->epbase, &nn_ctcp_epbase_vfptr, hint);
/* Check whether IPv6 is to be used. */
ipv4onlylen = sizeof (ipv4only);
nn_epbase_getopt (&self->epbase, NN_SOL_SOCKET, NN_IPV4ONLY,
&ipv4only, &ipv4onlylen);
nn_assert (ipv4onlylen == sizeof (ipv4only));
/* Start parsing the address. */
addr = nn_epbase_getaddr (&self->epbase);
addrlen = strlen (addr);
semicolon = strchr (addr, ';');
hostname = semicolon ? semicolon + 1 : addr;
colon = strrchr (addr, ':');
end = addr + addrlen;
/* Parse the port. */
if (nn_slow (!colon)) {
nn_epbase_term (&self->epbase);
return -EINVAL;
}
rc = nn_port_resolve (colon + 1, end - colon - 1);
if (nn_slow (rc < 0)) {
nn_epbase_term (&self->epbase);
return -EINVAL;
}
/* Check whether the host portion of the address is either a literal
or a valid hostname. */
if (nn_dns_check_hostname (hostname, colon - hostname) < 0 &&
nn_literal_resolve (hostname, colon - hostname, ipv4only,
&ss, &sslen) < 0) {
nn_epbase_term (&self->epbase);
return -EINVAL;
}
/* If local address is specified, check whether it is valid. */
if (semicolon) {
rc = nn_iface_resolve (addr, semicolon - addr, ipv4only, &ss, &sslen);
if (rc < 0) {
nn_epbase_term (&self->epbase);
return -ENODEV;
}
}
/* Initialise the structure. */
nn_fsm_init_root (&self->fsm, nn_ctcp_handler, nn_ctcp_shutdown,
nn_epbase_getctx (&self->epbase));
self->state = NN_CTCP_STATE_IDLE;
nn_usock_init (&self->usock, NN_CTCP_SRC_USOCK, &self->fsm);
sz = sizeof (reconnect_ivl);
nn_epbase_getopt (&self->epbase, NN_SOL_SOCKET, NN_RECONNECT_IVL,
&reconnect_ivl, &sz);
nn_assert (sz == sizeof (reconnect_ivl));
sz = sizeof (reconnect_ivl_max);
nn_epbase_getopt (&self->epbase, NN_SOL_SOCKET, NN_RECONNECT_IVL_MAX,
&reconnect_ivl_max, &sz);
nn_assert (sz == sizeof (reconnect_ivl_max));
if (reconnect_ivl_max == 0)
reconnect_ivl_max = reconnect_ivl;
nn_backoff_init (&self->retry, NN_CTCP_SRC_RECONNECT_TIMER,
reconnect_ivl, reconnect_ivl_max, &self->fsm);
nn_stcp_init (&self->stcp, NN_CTCP_SRC_STCP, &self->epbase, &self->fsm);
nn_dns_init (&self->dns, NN_CTCP_SRC_DNS, &self->fsm);
/* Start the state machine. */
nn_fsm_start (&self->fsm);
/* Return the base class as an out parameter. */
*epbase = &self->epbase;
return 0;
}
static void nn_global_init (void)
{
int i;
char *envvar;
int rc;
char *addr;
#if defined NN_HAVE_WINDOWS
WSADATA data;
#endif
/* Check whether the library was already initialised. If so, do nothing. */
if (self.socks)
return;
/* On Windows, initialise the socket library. */
#if defined NN_HAVE_WINDOWS
rc = WSAStartup (MAKEWORD (2, 2), &data);
nn_assert (rc == 0);
nn_assert (LOBYTE (data.wVersion) == 2 &&
HIBYTE (data.wVersion) == 2);
#endif
/* Initialise the memory allocation subsystem. */
nn_alloc_init ();
/* Seed the pseudo-random number generator. */
nn_random_seed ();
/* Allocate the global table of SP sockets. */
self.socks = nn_alloc ((sizeof (struct nn_sock*) * NN_MAX_SOCKETS) +
(sizeof (uint16_t) * NN_MAX_SOCKETS), "socket table");
alloc_assert (self.socks);
for (i = 0; i != NN_MAX_SOCKETS; ++i)
self.socks [i] = NULL;
self.nsocks = 0;
self.flags = 0;
/* Print connection and accepting errors to the stderr */
envvar = getenv("NN_PRINT_ERRORS");
/* any non-empty string is true */
self.print_errors = envvar && *envvar;
/* Print socket statistics to stderr */
envvar = getenv("NN_PRINT_STATISTICS");
self.print_statistics = envvar && *envvar;
/* Allocate the stack of unused file descriptors. */
self.unused = (uint16_t*) (self.socks + NN_MAX_SOCKETS);
alloc_assert (self.unused);
for (i = 0; i != NN_MAX_SOCKETS; ++i)
self.unused [i] = NN_MAX_SOCKETS - i - 1;
/* Initialise other parts of the global state. */
nn_list_init (&self.transports);
nn_list_init (&self.socktypes);
/* Plug in individual transports. */
nn_global_add_transport (nn_inproc);
nn_global_add_transport (nn_ipc);
nn_global_add_transport (nn_tcp);
nn_global_add_transport (nn_ws);
nn_global_add_transport (nn_tcpmux);
/* Plug in individual socktypes. */
nn_global_add_socktype (nn_pair_socktype);
nn_global_add_socktype (nn_xpair_socktype);
nn_global_add_socktype (nn_pub_socktype);
nn_global_add_socktype (nn_sub_socktype);
nn_global_add_socktype (nn_xpub_socktype);
nn_global_add_socktype (nn_xsub_socktype);
nn_global_add_socktype (nn_rep_socktype);
nn_global_add_socktype (nn_req_socktype);
nn_global_add_socktype (nn_xrep_socktype);
nn_global_add_socktype (nn_xreq_socktype);
nn_global_add_socktype (nn_push_socktype);
nn_global_add_socktype (nn_xpush_socktype);
nn_global_add_socktype (nn_pull_socktype);
nn_global_add_socktype (nn_xpull_socktype);
nn_global_add_socktype (nn_respondent_socktype);
nn_global_add_socktype (nn_surveyor_socktype);
nn_global_add_socktype (nn_xrespondent_socktype);
nn_global_add_socktype (nn_xsurveyor_socktype);
nn_global_add_socktype (nn_bus_socktype);
nn_global_add_socktype (nn_xbus_socktype);
/* Start the worker threads. */
nn_pool_init (&self.pool);
/* Start FSM */
nn_fsm_init_root (&self.fsm, nn_global_handler, nn_global_shutdown,
&self.ctx);
self.state = NN_GLOBAL_STATE_IDLE;
nn_ctx_init (&self.ctx, nn_global_getpool (), NULL);
nn_timer_init (&self.stat_timer, NN_GLOBAL_SRC_STAT_TIMER, &self.fsm);
nn_fsm_start (&self.fsm);
/* Initializing special sockets. */
addr = getenv ("NN_STATISTICS_SOCKET");
if (addr) {
self.statistics_socket = nn_global_create_socket (AF_SP, NN_PUB);
errno_assert (self.statistics_socket >= 0);
rc = nn_global_create_ep (self.statistics_socket, addr, 0);
errno_assert (rc >= 0);
} else {
self.statistics_socket = -1;
}
addr = getenv ("NN_APPLICATION_NAME");
if (addr) {
strncpy (self.appname, addr, 63);
self.appname[63] = '\0';
} else {
/* No cross-platform way to find out application binary.
Also, MSVC suggests using _getpid() instead of getpid(),
however, it's not clear whether the former is supported
by older versions of Windows/MSVC. */
#if defined _MSC_VER
#pragma warning (push)
#pragma warning (disable:4996)
#endif
sprintf (self.appname, "nanomsg.%d", getpid());
#if defined _MSC_VER
#pragma warning (pop)
#endif
}
addr = getenv ("NN_HOSTNAME");
if (addr) {
strncpy (self.hostname, addr, 63);
self.hostname[63] = '\0';
} else {
rc = gethostname (self.hostname, 63);
errno_assert (rc == 0);
self.hostname[63] = '\0';
}
}
int nn_cws_create (void *hint, struct nn_epbase **epbase)
{
int rc;
const char *addr;
size_t addrlen;
const char *semicolon;
const char *hostname;
size_t hostlen;
const char *colon;
const char *slash;
const char *resource;
size_t resourcelen;
struct sockaddr_storage ss;
size_t sslen;
int ipv4only;
size_t ipv4onlylen;
struct nn_cws *self;
int reconnect_ivl;
int reconnect_ivl_max;
int msg_type;
size_t sz;
/* Allocate the new endpoint object. */
self = nn_alloc (sizeof (struct nn_cws), "cws");
alloc_assert (self);
/* Initalise the endpoint. */
nn_epbase_init (&self->epbase, &nn_cws_epbase_vfptr, hint);
/* Check whether IPv6 is to be used. */
ipv4onlylen = sizeof (ipv4only);
nn_epbase_getopt (&self->epbase, NN_SOL_SOCKET, NN_IPV4ONLY,
&ipv4only, &ipv4onlylen);
nn_assert (ipv4onlylen == sizeof (ipv4only));
/* Start parsing the address. */
addr = nn_epbase_getaddr (&self->epbase);
addrlen = strlen (addr);
semicolon = strchr (addr, ';');
hostname = semicolon ? semicolon + 1 : addr;
colon = strrchr (addr, ':');
slash = colon ? strchr (colon, '/') : strchr (addr, '/');
resource = slash ? slash : addr + addrlen;
self->remote_hostname_len = colon ? colon - hostname : resource - hostname;
/* Host contains both hostname and port. */
hostlen = resource - hostname;
/* Parse the port; assume port 80 if not explicitly declared. */
if (nn_slow (colon != NULL)) {
rc = nn_port_resolve (colon + 1, resource - colon - 1);
if (nn_slow (rc < 0)) {
nn_epbase_term (&self->epbase);
return -EINVAL;
}
self->remote_port = rc;
}
else {
self->remote_port = 80;
}
/* Check whether the host portion of the address is either a literal
or a valid hostname. */
if (nn_dns_check_hostname (hostname, self->remote_hostname_len) < 0 &&
nn_literal_resolve (hostname, self->remote_hostname_len, ipv4only,
&ss, &sslen) < 0) {
nn_epbase_term (&self->epbase);
return -EINVAL;
}
/* If local address is specified, check whether it is valid. */
if (semicolon) {
rc = nn_iface_resolve (addr, semicolon - addr, ipv4only, &ss, &sslen);
if (rc < 0) {
nn_epbase_term (&self->epbase);
return -ENODEV;
}
}
/* At this point, the address is valid, so begin allocating resources. */
nn_chunkref_init (&self->remote_host, hostlen + 1);
memcpy (nn_chunkref_data (&self->remote_host), hostname, hostlen);
((uint8_t *) nn_chunkref_data (&self->remote_host)) [hostlen] = '\0';
if (semicolon) {
nn_chunkref_init (&self->nic, semicolon - addr);
memcpy (nn_chunkref_data (&self->nic),
addr, semicolon - addr);
}
else {
nn_chunkref_init (&self->nic, 1);
memcpy (nn_chunkref_data (&self->nic), "*", 1);
}
/* The requested resource is used in opening handshake. */
resourcelen = strlen (resource);
if (resourcelen) {
nn_chunkref_init (&self->resource, resourcelen + 1);
strncpy (nn_chunkref_data (&self->resource),
resource, resourcelen + 1);
}
else {
/* No resource specified, so allocate base path. */
nn_chunkref_init (&self->resource, 2);
strncpy (nn_chunkref_data (&self->resource), "/", 2);
}
/* Initialise the structure. */
nn_fsm_init_root (&self->fsm, nn_cws_handler, nn_cws_shutdown,
nn_epbase_getctx (&self->epbase));
self->state = NN_CWS_STATE_IDLE;
nn_usock_init (&self->usock, NN_CWS_SRC_USOCK, &self->fsm);
sz = sizeof (msg_type);
nn_epbase_getopt (&self->epbase, NN_WS, NN_WS_MSG_TYPE,
&msg_type, &sz);
nn_assert (sz == sizeof (msg_type));
self->msg_type = (uint8_t) msg_type;
sz = sizeof (reconnect_ivl);
nn_epbase_getopt (&self->epbase, NN_SOL_SOCKET, NN_RECONNECT_IVL,
&reconnect_ivl, &sz);
nn_assert (sz == sizeof (reconnect_ivl));
sz = sizeof (reconnect_ivl_max);
nn_epbase_getopt (&self->epbase, NN_SOL_SOCKET, NN_RECONNECT_IVL_MAX,
&reconnect_ivl_max, &sz);
nn_assert (sz == sizeof (reconnect_ivl_max));
if (reconnect_ivl_max == 0)
reconnect_ivl_max = reconnect_ivl;
nn_backoff_init (&self->retry, NN_CWS_SRC_RECONNECT_TIMER,
reconnect_ivl, reconnect_ivl_max, &self->fsm);
nn_sws_init (&self->sws, NN_CWS_SRC_SWS, &self->epbase, &self->fsm);
nn_dns_init (&self->dns, NN_CWS_SRC_DNS, &self->fsm);
/* Start the state machine. */
nn_fsm_start (&self->fsm);
/* Return the base class as an out parameter. */
*epbase = &self->epbase;
return 0;
}