int uv_tcp_listen(uv_tcp_t* tcp, int backlog, uv_connection_cb cb) {
static int single_accept = -1;
if (tcp->delayed_error)
return uv__set_sys_error(tcp->loop, tcp->delayed_error);
if (single_accept == -1) {
const char* val = getenv("UV_TCP_SINGLE_ACCEPT");
single_accept = (val != NULL && atoi(val) != 0); /* Off by default. */
}
if (single_accept)
tcp->flags |= UV_TCP_SINGLE_ACCEPT;
if (maybe_new_socket(tcp, AF_INET, UV_STREAM_READABLE))
return -1;
if (listen(tcp->io_watcher.fd, backlog))
return uv__set_sys_error(tcp->loop, errno);
tcp->connection_cb = cb;
/* Start listening for connections. */
tcp->io_watcher.cb = uv__server_io;
uv__io_start(tcp->loop, &tcp->io_watcher, UV__POLLIN);
return 0;
}
static int uv__bind(uv_tcp_t* tcp,
int domain,
struct sockaddr* addr,
int addrsize) {
int on;
if (maybe_new_socket(tcp, domain, UV_STREAM_READABLE|UV_STREAM_WRITABLE))
return -1;
on = 1;
if (setsockopt(tcp->io_watcher.fd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)))
return uv__set_sys_error(tcp->loop, errno);
if (tcp->flags & UV_TCP_V6ONLY) {
on = 1;
if (setsockopt(tcp->io_watcher.fd, IPPROTO_IPV6, IPV6_V6ONLY, &on, sizeof(on)) == -1)
return uv__set_sys_error(tcp->loop, errno);
}
errno = 0;
if (bind(tcp->io_watcher.fd, addr, addrsize) && errno != EADDRINUSE)
return uv__set_sys_error(tcp->loop, errno);
tcp->delayed_error = errno;
return 0;
}
static int uv__bind(uv_tcp_t* tcp,
int domain,
struct sockaddr* addr,
int addrsize) {
int saved_errno;
int status;
saved_errno = errno;
status = -1;
if (maybe_new_socket(tcp, domain, UV_STREAM_READABLE|UV_STREAM_WRITABLE))
return -1;
tcp->delayed_error = 0;
if (bind(tcp->fd, addr, addrsize) == -1) {
if (errno == EADDRINUSE) {
tcp->delayed_error = errno;
} else {
uv__set_sys_error(tcp->loop, errno);
goto out;
}
}
status = 0;
out:
errno = saved_errno;
return status;
}
int uv_tcp_init_ex(uv_loop_t* loop, uv_tcp_t* tcp, unsigned int flags) {
int domain;
/* Use the lower 8 bits for the domain */
domain = flags & 0xFF;
if (domain != AF_INET && domain != AF_INET6 && domain != AF_UNSPEC)
return -EINVAL;
if (flags & ~0xFF)
return -EINVAL;
uv__stream_init(loop, (uv_stream_t*)tcp, UV_TCP);
/* If anything fails beyond this point we need to remove the handle from
* the handle queue, since it was added by uv__handle_init in uv_stream_init.
*/
if (domain != AF_UNSPEC) {
int err = maybe_new_socket(tcp, domain, 0);
if (err) {
QUEUE_REMOVE(&tcp->handle_queue);
return err;
}
}
return 0;
}
int uv__tcp_connect(uv_connect_t* req,
uv_tcp_t* handle,
const struct sockaddr* addr,
unsigned int addrlen,
uv_connect_cb cb) {
int err;
int r;
assert(handle->type == UV_TCP);
if (handle->connect_req != NULL)
return -EALREADY; /* FIXME(bnoordhuis) -EINVAL or maybe -EBUSY. */
err = maybe_new_socket(handle,
addr->sa_family,
UV_STREAM_READABLE | UV_STREAM_WRITABLE);
if (err)
return err;
handle->delayed_error = 0;
do {
errno = 0;
r = connect(uv__stream_fd(handle), addr, addrlen);
} while (r == -1 && errno == EINTR);
/* We not only check the return value, but also check the errno != 0.
* Because in rare cases connect() will return -1 but the errno
* is 0 (for example, on Android 4.3, OnePlus phone A0001_12_150227)
* and actually the tcp three-way handshake is completed.
*/
if (r == -1 && errno != 0) {
if (errno == EINPROGRESS)
; /* not an error */
else if (errno == ECONNREFUSED)
/* If we get a ECONNREFUSED wait until the next tick to report the
* error. Solaris wants to report immediately--other unixes want to
* wait.
*/
handle->delayed_error = -errno;
else
return -errno;
}
uv__req_init(handle->loop, req, UV_CONNECT);
req->cb = cb;
req->handle = (uv_stream_t*) handle;
QUEUE_INIT(&req->queue);
handle->connect_req = req;
uv__io_start(handle->loop, &handle->io_watcher, POLLOUT);
if (handle->delayed_error)
uv__io_feed(handle->loop, &handle->io_watcher);
return 0;
}
int uv__tcp_bind(uv_tcp_t* tcp,
const struct sockaddr* addr,
unsigned int addrlen,
unsigned int flags) {
int err;
int on;
/* Cannot set IPv6-only mode on non-IPv6 socket. */
if ((flags & UV_TCP_IPV6ONLY) && addr->sa_family != AF_INET6)
return -EINVAL;
err = maybe_new_socket(tcp, addr->sa_family, 0);
if (err)
return err;
on = 1;
if (setsockopt(tcp->io_watcher.fd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)))
return -errno;
#ifdef IPV6_V6ONLY
if (addr->sa_family == AF_INET6) {
on = (flags & UV_TCP_IPV6ONLY) != 0;
if (setsockopt(tcp->io_watcher.fd,
IPPROTO_IPV6,
IPV6_V6ONLY,
&on,
sizeof on) == -1) {
#if defined(__MVS__)
if (errno == EOPNOTSUPP)
return -EINVAL;
#endif
return -errno;
}
}
#endif
errno = 0;
if (bind(tcp->io_watcher.fd, addr, addrlen) && errno != EADDRINUSE) {
if (errno == EAFNOSUPPORT)
/* OSX, other BSDs and SunoS fail with EAFNOSUPPORT when binding a
* socket created with AF_INET to an AF_INET6 address or vice versa. */
return -EINVAL;
return -errno;
}
tcp->delayed_error = -errno;
tcp->flags |= UV_HANDLE_BOUND;
if (addr->sa_family == AF_INET6)
tcp->flags |= UV_HANDLE_IPV6;
return 0;
}
static int uv__connect(uv_connect_t* req,
uv_tcp_t* handle,
struct sockaddr* addr,
socklen_t addrlen,
uv_connect_cb cb) {
int err;
int r;
assert(handle->type == UV_TCP);
if (handle->connect_req != NULL)
return -EALREADY; /* FIXME(bnoordhuis) -EINVAL or maybe -EBUSY. */
err = maybe_new_socket(handle,
addr->sa_family,
UV_STREAM_READABLE | UV_STREAM_WRITABLE);
if (err)
return err;
handle->delayed_error = 0;
do
r = connect(uv__stream_fd(handle), addr, addrlen);
while (r == -1 && errno == EINTR);
if (r == -1) {
if (errno == EINPROGRESS)
; /* not an error */
else if (errno == ECONNREFUSED)
/* If we get a ECONNREFUSED wait until the next tick to report the
* error. Solaris wants to report immediately--other unixes want to
* wait.
*/
handle->delayed_error = -errno;
else
return -errno;
}
uv__req_init(handle->loop, req, UV_CONNECT);
req->cb = cb;
req->handle = (uv_stream_t*) handle;
QUEUE_INIT(&req->queue);
handle->connect_req = req;
uv__io_start(handle->loop, &handle->io_watcher, UV__POLLOUT);
if (handle->delayed_error)
uv__io_feed(handle->loop, &handle->io_watcher);
return 0;
}
static int uv__connect(uv_connect_t* req,
uv_tcp_t* handle,
struct sockaddr* addr,
socklen_t addrlen,
uv_connect_cb cb) {
int r;
assert(handle->type == UV_TCP);
if (handle->connect_req)
return uv__set_sys_error(handle->loop, EALREADY);
if (maybe_new_socket(handle,
addr->sa_family,
UV_STREAM_READABLE|UV_STREAM_WRITABLE)) {
return -1;
}
handle->delayed_error = 0;
do
r = connect(handle->fd, addr, addrlen);
while (r == -1 && errno == EINTR);
if (r == -1) {
if (errno == EINPROGRESS)
; /* not an error */
else if (errno == ECONNREFUSED)
/* If we get a ECONNREFUSED wait until the next tick to report the
* error. Solaris wants to report immediately--other unixes want to
* wait.
*/
handle->delayed_error = errno;
else
return uv__set_sys_error(handle->loop, errno);
}
uv__req_init(handle->loop, req, UV_CONNECT);
req->cb = cb;
req->handle = (uv_stream_t*) handle;
ngx_queue_init(&req->queue);
handle->connect_req = req;
uv__io_start(handle->loop, &handle->write_watcher);
if (handle->delayed_error)
uv__io_feed(handle->loop, &handle->write_watcher, UV__IO_WRITE);
return 0;
}
int uv_tcp_listen(uv_tcp_t* tcp, int backlog, uv_connection_cb cb) {
if (tcp->delayed_error)
return uv__set_sys_error(tcp->loop, tcp->delayed_error);
if (maybe_new_socket(tcp, AF_INET, UV_STREAM_READABLE))
return -1;
if (listen(tcp->fd, backlog))
return uv__set_sys_error(tcp->loop, errno);
tcp->connection_cb = cb;
/* Start listening for connections. */
uv__io_set(&tcp->read_watcher, uv__server_io, tcp->fd, UV__IO_READ);
uv__io_start(tcp->loop, &tcp->read_watcher);
return 0;
}
int uv__tcp_bind(uv_tcp_t* tcp,
const struct sockaddr* addr,
unsigned int addrlen,
unsigned int flags) {
int err;
int on;
/* Cannot set IPv6-only mode on non-IPv6 socket. */
if ((flags & UV_TCP_IPV6ONLY) && addr->sa_family != AF_INET6)
return -EINVAL;
err = maybe_new_socket(tcp,
addr->sa_family,
UV_STREAM_READABLE | UV_STREAM_WRITABLE);
if (err)
return err;
on = 1;
if (setsockopt(tcp->io_watcher.fd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)))
return -errno;
#ifdef IPV6_V6ONLY
if (addr->sa_family == AF_INET6) {
on = (flags & UV_TCP_IPV6ONLY) != 0;
if (setsockopt(tcp->io_watcher.fd,
IPPROTO_IPV6,
IPV6_V6ONLY,
&on,
sizeof on) == -1) {
return -errno;
}
}
#endif
errno = 0;
if (bind(tcp->io_watcher.fd, addr, addrlen) && errno != EADDRINUSE)
return -errno;
tcp->delayed_error = -errno;
if (addr->sa_family == AF_INET6)
tcp->flags |= UV_HANDLE_IPV6;
return 0;
}
int uv_tcp_listen(uv_tcp_t* tcp, int backlog, uv_connection_cb cb) {
static int single_accept = -1;
unsigned long flags;
int err;
if (tcp->delayed_error)
return tcp->delayed_error;
if (single_accept == -1) {
const char* val = getenv("UV_TCP_SINGLE_ACCEPT");
single_accept = (val != NULL && atoi(val) != 0); /* Off by default. */
}
if (single_accept)
tcp->flags |= UV_TCP_SINGLE_ACCEPT;
flags = 0;
#if defined(__MVS__)
/* on zOS the listen call does not bind automatically
if the socket is unbound. Hence the manual binding to
an arbitrary port is required to be done manually
*/
flags |= UV_HANDLE_BOUND;
#endif
err = maybe_new_socket(tcp, AF_INET, flags);
if (err)
return err;
if (listen(tcp->io_watcher.fd, backlog))
return -errno;
tcp->connection_cb = cb;
tcp->flags |= UV_HANDLE_BOUND;
/* Start listening for connections. */
tcp->io_watcher.cb = uv__server_io;
uv__io_start(tcp->loop, &tcp->io_watcher, POLLIN);
return 0;
}
static int uv__bind(uv_tcp_t* tcp,
int domain,
struct sockaddr* addr,
int addrsize) {
int err;
int on;
err = maybe_new_socket(tcp, domain, UV_STREAM_READABLE | UV_STREAM_WRITABLE);
if (err)
return err;
on = 1;
if (setsockopt(tcp->io_watcher.fd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)))
return -errno;
errno = 0;
if (bind(tcp->io_watcher.fd, addr, addrsize) && errno != EADDRINUSE)
return -errno;
tcp->delayed_error = -errno;
return 0;
}
int uv_tcp_listen(uv_tcp_t* tcp, int backlog, uv_connection_cb cb) {
static int single_accept = -1;
if (tcp->delayed_error)
return uv__set_sys_error(tcp->loop, tcp->delayed_error);
if (single_accept == -1) {
const char* val = getenv("UV_TCP_SINGLE_ACCEPT");
single_accept = (val == NULL) || (atoi(val) != 0); /* on by default */
}
if (!single_accept)
goto no_single_accept;
tcp->idle_handle = malloc(sizeof(*tcp->idle_handle));
if (tcp->idle_handle == NULL)
return uv__set_sys_error(tcp->loop, ENOMEM);
if (uv_idle_init(tcp->loop, tcp->idle_handle))
abort();
tcp->flags |= UV_TCP_SINGLE_ACCEPT;
no_single_accept:
if (maybe_new_socket(tcp, AF_INET, UV_STREAM_READABLE))
return -1;
if (listen(tcp->fd, backlog))
return uv__set_sys_error(tcp->loop, errno);
tcp->connection_cb = cb;
/* Start listening for connections. */
uv__io_set(&tcp->read_watcher, uv__server_io, tcp->fd, UV__IO_READ);
uv__io_start(tcp->loop, &tcp->read_watcher);
return 0;
}
