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Diffstat (limited to 'third-party/libuv/src/unix/tcp.c')
-rw-r--r--third-party/libuv/src/unix/tcp.c312
1 files changed, 312 insertions, 0 deletions
diff --git a/third-party/libuv/src/unix/tcp.c b/third-party/libuv/src/unix/tcp.c
new file mode 100644
index 0000000000..2c36dc3ffc
--- /dev/null
+++ b/third-party/libuv/src/unix/tcp.c
@@ -0,0 +1,312 @@
+/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include "uv.h"
+#include "internal.h"
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <assert.h>
+#include <errno.h>
+
+
+int uv_tcp_init(uv_loop_t* loop, uv_tcp_t* tcp) {
+ uv__stream_init(loop, (uv_stream_t*)tcp, UV_TCP);
+ return 0;
+}
+
+
+static int maybe_new_socket(uv_tcp_t* handle, int domain, int flags) {
+ int sockfd;
+ int err;
+
+ if (uv__stream_fd(handle) != -1)
+ return 0;
+
+ err = uv__socket(domain, SOCK_STREAM, 0);
+ if (err < 0)
+ return err;
+ sockfd = err;
+
+ err = uv__stream_open((uv_stream_t*) handle, sockfd, flags);
+ if (err) {
+ uv__close(sockfd);
+ return err;
+ }
+
+ return 0;
+}
+
+
+int uv__tcp_bind(uv_tcp_t* tcp,
+ const struct sockaddr* addr,
+ unsigned int addrlen,
+ unsigned int flags) {
+ int err;
+ int on;
+
+ 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;
+ 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
+ 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;
+}
+
+
+int uv_tcp_open(uv_tcp_t* handle, uv_os_sock_t sock) {
+ return uv__stream_open((uv_stream_t*)handle,
+ sock,
+ UV_STREAM_READABLE | UV_STREAM_WRITABLE);
+}
+
+
+int uv_tcp_getsockname(uv_tcp_t* handle,
+ struct sockaddr* name,
+ int* namelen) {
+ socklen_t socklen;
+
+ if (handle->delayed_error)
+ return handle->delayed_error;
+
+ if (uv__stream_fd(handle) < 0)
+ return -EINVAL; /* FIXME(bnoordhuis) -EBADF */
+
+ /* sizeof(socklen_t) != sizeof(int) on some systems. */
+ socklen = (socklen_t) *namelen;
+
+ if (getsockname(uv__stream_fd(handle), name, &socklen))
+ return -errno;
+
+ *namelen = (int) socklen;
+ return 0;
+}
+
+
+int uv_tcp_getpeername(uv_tcp_t* handle,
+ struct sockaddr* name,
+ int* namelen) {
+ socklen_t socklen;
+
+ if (handle->delayed_error)
+ return handle->delayed_error;
+
+ if (uv__stream_fd(handle) < 0)
+ return -EINVAL; /* FIXME(bnoordhuis) -EBADF */
+
+ /* sizeof(socklen_t) != sizeof(int) on some systems. */
+ socklen = (socklen_t) *namelen;
+
+ if (getpeername(uv__stream_fd(handle), name, &socklen))
+ return -errno;
+
+ *namelen = (int) socklen;
+ return 0;
+}
+
+
+int uv_tcp_listen(uv_tcp_t* tcp, int backlog, uv_connection_cb cb) {
+ static int single_accept = -1;
+ 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;
+
+ err = maybe_new_socket(tcp, AF_INET, UV_STREAM_READABLE);
+ if (err)
+ return err;
+
+ if (listen(tcp->io_watcher.fd, backlog))
+ return -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;
+}
+
+
+int uv__tcp_nodelay(int fd, int on) {
+ return setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &on, sizeof(on));
+}
+
+
+int uv__tcp_keepalive(int fd, int on, unsigned int delay) {
+ if (setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &on, sizeof(on)))
+ return -errno;
+
+#ifdef TCP_KEEPIDLE
+ if (on && setsockopt(fd, IPPROTO_TCP, TCP_KEEPIDLE, &delay, sizeof(delay)))
+ return -errno;
+#endif
+
+ /* Solaris/SmartOS, if you don't support keep-alive,
+ * then don't advertise it in your system headers...
+ */
+ /* FIXME(bnoordhuis) That's possibly because sizeof(delay) should be 1. */
+#if defined(TCP_KEEPALIVE) && !defined(__sun)
+ if (on && setsockopt(fd, IPPROTO_TCP, TCP_KEEPALIVE, &delay, sizeof(delay)))
+ return -errno;
+#endif
+
+ return 0;
+}
+
+
+int uv_tcp_nodelay(uv_tcp_t* handle, int on) {
+ int err;
+
+ if (uv__stream_fd(handle) != -1) {
+ err = uv__tcp_nodelay(uv__stream_fd(handle), on);
+ if (err)
+ return err;
+ }
+
+ if (on)
+ handle->flags |= UV_TCP_NODELAY;
+ else
+ handle->flags &= ~UV_TCP_NODELAY;
+
+ return 0;
+}
+
+
+int uv_tcp_keepalive(uv_tcp_t* handle, int on, unsigned int delay) {
+ int err;
+
+ if (uv__stream_fd(handle) != -1) {
+ err =uv__tcp_keepalive(uv__stream_fd(handle), on, delay);
+ if (err)
+ return err;
+ }
+
+ if (on)
+ handle->flags |= UV_TCP_KEEPALIVE;
+ else
+ handle->flags &= ~UV_TCP_KEEPALIVE;
+
+ /* TODO Store delay if uv__stream_fd(handle) == -1 but don't want to enlarge
+ * uv_tcp_t with an int that's almost never used...
+ */
+
+ return 0;
+}
+
+
+int uv_tcp_simultaneous_accepts(uv_tcp_t* handle, int enable) {
+ if (enable)
+ handle->flags &= ~UV_TCP_SINGLE_ACCEPT;
+ else
+ handle->flags |= UV_TCP_SINGLE_ACCEPT;
+ return 0;
+}
+
+
+void uv__tcp_close(uv_tcp_t* handle) {
+ uv__stream_close((uv_stream_t*)handle);
+}
generated by cgit (git 2.34.1) at 2025-11-04 12:16:59 +0000