void nn_ins_connect (struct nn_ins_item *item, nn_ins_fn fn)
{
struct nn_list_item *it;
struct nn_ins_item *bitem;
nn_mutex_lock (&self.sync);
/* Insert the entry into the endpoint repository. */
nn_list_insert (&self.connected, &item->item,
nn_list_end (&self.connected));
/* During this process a pipe may be created. */
for (it = nn_list_begin (&self.bound);
it != nn_list_end (&self.bound);
it = nn_list_next (&self.bound, it)) {
bitem = nn_cont (it, struct nn_ins_item, item);
if (strncmp (nn_epbase_getaddr (&item->epbase),
nn_epbase_getaddr (&bitem->epbase), NN_SOCKADDR_MAX) == 0) {
/* Check whether the two sockets are compatible. */
if (!nn_epbase_ispeer (&item->epbase, bitem->protocol))
break;
/* Call back to cinproc to create actual connection. */
fn (item, bitem);
break;
}
}
nn_mutex_unlock (&self.sync);
}
static void nn_ctcp_start_resolving (struct nn_ctcp *self)
{
const char *addr;
const char *begin;
const char *end;
int ipv4only;
size_t ipv4onlylen;
/* Extract the hostname part from address string. */
addr = nn_epbase_getaddr (&self->epbase);
begin = strchr (addr, ';');
if (!begin)
begin = addr;
else
++begin;
end = strrchr (addr, ':');
nn_assert (end);
/* 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));
/* TODO: Get the actual value of IPV4ONLY option. */
nn_dns_start (&self->dns, begin, end - begin, ipv4only, &self->dns_result);
self->state = NN_CTCP_STATE_RESOLVING;
}
static void nn_bipc_start_listening (struct nn_bipc *self)
{
int rc;
struct sockaddr_storage ss;
struct sockaddr_un *un;
const char *addr;
/* First, create the AF_UNIX address. */
addr = nn_epbase_getaddr (&self->epbase);
memset (&ss, 0, sizeof (ss));
un = (struct sockaddr_un*) &ss;
nn_assert (strlen (addr) < sizeof (un->sun_path));
ss.ss_family = AF_UNIX;
strncpy (un->sun_path, addr, sizeof (un->sun_path));
/* Delete the IPC file left over by eventual previous runs of
the application. */
rc = unlink (addr);
errno_assert (rc == 0 || errno == ENOENT);
/* Start listening for incoming connections. */
rc = nn_usock_start (&self->usock, AF_UNIX, SOCK_STREAM, 0);
/* TODO: EMFILE error can happen here. We can wait a bit and re-try. */
errnum_assert (rc == 0, -rc);
rc = nn_usock_bind (&self->usock,
(struct sockaddr*) &ss, sizeof (struct sockaddr_un));
errnum_assert (rc == 0, -rc);
rc = nn_usock_listen (&self->usock, NN_BIPC_BACKLOG);
errnum_assert (rc == 0, -rc);
}
static void nn_cstream_waiting_timeout (const struct nn_cp_sink **self,
struct nn_timer *timer)
{
int rc;
struct nn_cstream *cstream;
struct sockaddr_storage ss;
socklen_t sslen;
cstream = nn_cont (self, struct nn_cstream, sink);
/* Retry timer expired. Now we'll try to resolve the address. */
rc = cstream->resolvefn (nn_epbase_getaddr (&cstream->epbase), &ss, &sslen);
/* If the address resolution have failed, wait and re-try. */
if (rc < 0) {
cstream->sink = &nn_cstream_state_waiting;
nn_timer_start (&cstream->retry_timer,
nn_cstream_compute_retry_ivl (cstream));
return;
}
/* Open the socket and start connecting. */
cstream->sink = &nn_cstream_state_connecting;
nn_usock_connect (&cstream->usock, (struct sockaddr*) &ss, sslen);
}
int nn_ins_bind (struct nn_ins_item *item, nn_ins_fn fn)
{
struct nn_list_item *it;
struct nn_ins_item *bitem;
struct nn_ins_item *citem;
nn_mutex_lock (&self.sync);
/* Check whether the endpoint isn't already bound. */
/* TODO: This is an O(n) algorithm! */
for (it = nn_list_begin (&self.bound); it != nn_list_end (&self.bound);
it = nn_list_next (&self.bound, it)) {
bitem = nn_cont (it, struct nn_ins_item, item);
if (strncmp (nn_epbase_getaddr (&item->epbase),
nn_epbase_getaddr (&bitem->epbase), NN_SOCKADDR_MAX) == 0) {
nn_mutex_unlock (&self.sync);
return -EADDRINUSE;
}
}
/* Insert the entry into the endpoint repository. */
nn_list_insert (&self.bound, &item->item,
nn_list_end (&self.bound));
/* During this process new pipes may be created. */
for (it = nn_list_begin (&self.connected);
it != nn_list_end (&self.connected);
it = nn_list_next (&self.connected, it)) {
citem = nn_cont (it, struct nn_ins_item, item);
if (strncmp (nn_epbase_getaddr (&item->epbase),
nn_epbase_getaddr (&citem->epbase), NN_SOCKADDR_MAX) == 0) {
/* Check whether the two sockets are compatible. */
if (!nn_epbase_ispeer (&item->epbase, citem->protocol))
continue;
fn (item, citem);
}
}
nn_mutex_unlock (&self.sync);
return 0;
}
static void nn_cipc_start_connecting (struct nn_cipc *self)
{
int rc;
struct sockaddr_storage ss;
struct sockaddr_un *un;
const char *addr;
int val;
size_t sz;
/* Try to start the underlying socket. */
addr = nn_epbase_getaddr (&self->epbase);
rc = nn_usock_start (&self->usock, AF_UNIX, SOCK_STREAM, 0,addr);
if (nn_slow (rc < 0)) {
nn_backoff_start (&self->retry);
self->state = NN_CIPC_STATE_WAITING;
return;
}
/* Set the relevant socket options. */
sz = sizeof (val);
nn_epbase_getopt (&self->epbase, NN_SOL_SOCKET, NN_SNDBUF, &val, &sz);
nn_assert (sz == sizeof (val));
nn_usock_setsockopt (&self->usock, SOL_SOCKET, SO_SNDBUF,&val, sizeof (val));
sz = sizeof (val);
nn_epbase_getopt (&self->epbase, NN_SOL_SOCKET, NN_RCVBUF, &val, &sz);
nn_assert (sz == sizeof (val));
nn_usock_setsockopt (&self->usock, SOL_SOCKET, SO_RCVBUF,&val, sizeof (val));
/* Create the IPC address from the address string. */
addr = nn_epbase_getaddr (&self->epbase);
memset (&ss, 0, sizeof (ss));
un = (struct sockaddr_un*) &ss;
nn_assert (strlen (addr) < sizeof (un->sun_path));
ss.ss_family = AF_UNIX;
strncpy (un->sun_path, addr, sizeof (un->sun_path));
/* Start connecting. */
nn_usock_connect (&self->usock, (struct sockaddr*) &ss,
sizeof (struct sockaddr_un));
self->state = NN_CIPC_STATE_CONNECTING;
nn_epbase_stat_increment (&self->epbase,
NN_STAT_INPROGRESS_CONNECTIONS, 1);
}
static void nn_btcp_start_listening (struct nn_btcp *self)
{
int rc;
struct sockaddr_storage ss;
size_t sslen;
int ipv4only;
size_t ipv4onlylen;
const char *addr;
const char *end;
const char *pos;
uint16_t port;
/* First, resolve the IP address. */
addr = nn_epbase_getaddr (&self->epbase);
memset (&ss, 0, sizeof (ss));
/* Parse the port. */
end = addr + strlen (addr);
pos = strrchr (addr, ':');
nn_assert (pos);
++pos;
rc = nn_port_resolve (pos, end - pos);
nn_assert (rc >= 0);
port = rc;
/* Parse the address. */
ipv4onlylen = sizeof (ipv4only);
nn_epbase_getopt (&self->epbase, NN_SOL_SOCKET, NN_IPV4ONLY,
&ipv4only, &ipv4onlylen);
nn_assert (ipv4onlylen == sizeof (ipv4only));
rc = nn_iface_resolve (addr, pos - addr - 1, ipv4only, &ss, &sslen);
errnum_assert (rc == 0, -rc);
/* Combine the port and the address. */
if (ss.ss_family == AF_INET) {
((struct sockaddr_in*) &ss)->sin_port = htons (port);
sslen = sizeof (struct sockaddr_in);
}
else if (ss.ss_family == AF_INET6) {
((struct sockaddr_in6*) &ss)->sin6_port = htons (port);
sslen = sizeof (struct sockaddr_in6);
}
else
nn_assert (0);
/* Start listening for incoming connections. */
rc = nn_usock_start (&self->usock, ss.ss_family, SOCK_STREAM, 0);
/* TODO: EMFILE error can happen here. We can wait a bit and re-try. */
errnum_assert (rc == 0, -rc);
rc = nn_usock_bind (&self->usock, (struct sockaddr*) &ss, (size_t) sslen);
errnum_assert (rc == 0, -rc);
rc = nn_usock_listen (&self->usock, NN_BTCP_BACKLOG);
errnum_assert (rc == 0, -rc);
}
void nn_usock_create_ipc_address(struct nn_epbase *ep, struct sockaddr_storage *ss)
{
struct sockaddr_un *un;
const char *addr;
addr = nn_epbase_getaddr(ep);
memset(ss, 0, sizeof(ss[0]));
un = (struct sockaddr_un*)ss;
nn_assert(strlen(addr) < sizeof(un->sun_path));
un->sun_family = AF_UNIX;
strncpy(un->sun_path, addr, sizeof(un->sun_path));
}
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;
}
static void nn_bipc_start_listening (struct nn_bipc *self)
{
int rc;
struct sockaddr_storage ss;
struct sockaddr_un *un;
const char *addr;
#if !defined NN_HAVE_WINDOWS
int fd;
int opt;
#endif
/* First, create the AF_UNIX address. */
addr = nn_epbase_getaddr (&self->epbase);
memset (&ss, 0, sizeof (ss));
un = (struct sockaddr_un*) &ss;
nn_assert (strlen (addr) < sizeof (un->sun_path));
ss.ss_family = AF_UNIX;
strncpy (un->sun_path, addr, sizeof (un->sun_path));
/* Delete the IPC file left over by eventual previous runs of
the application. We'll check whether the file is still in use by
connecting to the endpoint. On Windows plaform, NamedPipe is used
which does not have an underlying file. */
#if !defined NN_HAVE_WINDOWS
fd = socket (AF_UNIX, SOCK_STREAM, 0);
if (fd >= 0) {
rc = fcntl (fd, F_SETFL, O_NONBLOCK);
errno_assert (rc != -1 || errno == EINVAL);
rc = connect (fd, (struct sockaddr*) &ss,
sizeof (struct sockaddr_un));
if (rc == -1 && errno == ECONNREFUSED) {
rc = unlink (addr);
errno_assert (rc == 0 || errno == ENOENT);
}
rc = close (fd);
errno_assert (rc == 0);
}
#endif
/* Start listening for incoming connections. */
rc = nn_usock_start (&self->usock, AF_UNIX, SOCK_STREAM, 0);
if (nn_slow (rc < 0)) {
nn_backoff_start (&self->retry);
self->state = NN_BIPC_STATE_WAITING;
return;
}
rc = nn_usock_bind (&self->usock,
(struct sockaddr*) &ss, sizeof (struct sockaddr_un));
if (nn_slow (rc < 0)) {
nn_usock_stop (&self->usock);
self->state = NN_BIPC_STATE_CLOSING;
return;
}
rc = nn_usock_listen (&self->usock, NN_BIPC_BACKLOG);
if (nn_slow (rc < 0)) {
nn_usock_stop (&self->usock);
self->state = NN_BIPC_STATE_CLOSING;
return;
}
nn_bipc_start_accepting (self);
self->state = NN_BIPC_STATE_ACTIVE;
}
const char *nn_binproc_getaddr (struct nn_binproc *self)
{
return nn_epbase_getaddr (&self->epbase);
}
static void nn_ctcp_start_connecting (struct nn_ctcp *self,
struct sockaddr_storage *ss, size_t sslen)
{
int rc;
struct sockaddr_storage remote;
size_t remotelen;
struct sockaddr_storage local;
size_t locallen;
const char *addr;
const char *end;
const char *colon;
const char *semicolon;
uint16_t port;
int ipv4only;
size_t ipv4onlylen;
int val;
size_t sz;
/* Create IP address from the address string. */
addr = nn_epbase_getaddr (&self->epbase);
memset (&remote, 0, sizeof (remote));
/* Parse the port. */
end = addr + strlen (addr);
colon = strrchr (addr, ':');
rc = nn_port_resolve (colon + 1, end - colon - 1);
errnum_assert (rc > 0, -rc);
port = rc;
/* 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 local address, if any. */
semicolon = strchr (addr, ';');
memset (&local, 0, sizeof (local));
if (semicolon)
rc = nn_iface_resolve (addr, semicolon - addr, ipv4only,
&local, &locallen);
else
rc = nn_iface_resolve ("*", 1, ipv4only, &local, &locallen);
if (nn_slow (rc < 0)) {
nn_backoff_start (&self->retry);
self->state = NN_CTCP_STATE_WAITING;
return;
}
/* Combine the remote address and the port. */
remote = *ss;
remotelen = sslen;
if (remote.ss_family == AF_INET)
((struct sockaddr_in*) &remote)->sin_port = htons (port);
else if (remote.ss_family == AF_INET6)
((struct sockaddr_in6*) &remote)->sin6_port = htons (port);
else
nn_assert (0);
/* Try to start the underlying socket. */
rc = nn_usock_start (&self->usock, remote.ss_family, SOCK_STREAM, 0);
if (nn_slow (rc < 0)) {
nn_backoff_start (&self->retry);
self->state = NN_CTCP_STATE_WAITING;
return;
}
/* Set the relevant socket options. */
sz = sizeof (val);
nn_epbase_getopt (&self->epbase, NN_SOL_SOCKET, NN_SNDBUF, &val, &sz);
nn_assert (sz == sizeof (val));
nn_usock_setsockopt (&self->usock, SOL_SOCKET, SO_SNDBUF,
&val, sizeof (val));
sz = sizeof (val);
nn_epbase_getopt (&self->epbase, NN_SOL_SOCKET, NN_RCVBUF, &val, &sz);
nn_assert (sz == sizeof (val));
nn_usock_setsockopt (&self->usock, SOL_SOCKET, SO_RCVBUF,
&val, sizeof (val));
/* Bind the socket to the local network interface. */
rc = nn_usock_bind (&self->usock, (struct sockaddr*) &local, locallen);
if (nn_slow (rc != 0)) {
nn_backoff_start (&self->retry);
self->state = NN_CTCP_STATE_WAITING;
return;
}
/* Start connecting. */
nn_usock_connect (&self->usock, (struct sockaddr*) &remote, remotelen);
self->state = NN_CTCP_STATE_CONNECTING;
nn_epbase_stat_increment (&self->epbase,
NN_STAT_INPROGRESS_CONNECTIONS, 1);
}
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;
}
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;
}
static int nn_bws_listen (struct nn_bws *self)
{
int rc;
struct sockaddr_storage ss;
size_t sslen;
int ipv4only;
size_t ipv4onlylen;
const char *addr;
const char *end;
const char *pos;
uint16_t port;
/* First, resolve the IP address. */
addr = nn_epbase_getaddr (&self->epbase);
memset (&ss, 0, sizeof (ss));
/* Parse the port. */
end = addr + strlen (addr);
pos = strrchr (addr, ':');
nn_assert (pos);
++pos;
rc = nn_port_resolve (pos, end - pos);
if (rc < 0) {
return rc;
}
port = (uint16_t) rc;
/* Parse the address. */
ipv4onlylen = sizeof (ipv4only);
nn_epbase_getopt (&self->epbase, NN_SOL_SOCKET, NN_IPV4ONLY,
&ipv4only, &ipv4onlylen);
nn_assert (ipv4onlylen == sizeof (ipv4only));
rc = nn_iface_resolve (addr, pos - addr - 1, ipv4only, &ss, &sslen);
if (rc < 0) {
return rc;
}
/* Combine the port and the address. */
if (ss.ss_family == AF_INET) {
((struct sockaddr_in*) &ss)->sin_port = htons (port);
sslen = sizeof (struct sockaddr_in);
}
else if (ss.ss_family == AF_INET6) {
((struct sockaddr_in6*) &ss)->sin6_port = htons (port);
sslen = sizeof (struct sockaddr_in6);
}
else
nn_assert (0);
/* Start listening for incoming connections. */
rc = nn_usock_start (&self->usock, ss.ss_family, SOCK_STREAM, 0);
if (rc < 0) {
return rc;
}
rc = nn_usock_bind (&self->usock, (struct sockaddr*) &ss, (size_t) sslen);
if (rc < 0) {
nn_usock_stop (&self->usock);
return rc;
}
rc = nn_usock_listen (&self->usock, NN_BWS_BACKLOG);
if (rc < 0) {
nn_usock_stop (&self->usock);
return rc;
}
nn_bws_start_accepting(self);
return 0;
}
