871 lines
23 KiB
C
871 lines
23 KiB
C
/* 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 <assert.h>
|
|
|
|
#include "uv.h"
|
|
#include "../uv-common.h"
|
|
#include "internal.h"
|
|
|
|
|
|
/*
|
|
* Threshold of active tcp streams for which to preallocate tcp read buffers.
|
|
* (Due to node slab allocator performing poorly under this pattern,
|
|
* the optimization is temporarily disabled (threshold=0). This will be
|
|
* revisited once node allocator is improved.)
|
|
*/
|
|
const unsigned int uv_active_tcp_streams_threshold = 0;
|
|
|
|
/*
|
|
* Number of simultaneous pending AcceptEx calls.
|
|
*/
|
|
const unsigned int uv_simultaneous_server_accepts = 32;
|
|
|
|
/* A zero-size buffer for use by uv_tcp_read */
|
|
static char uv_zero_[] = "";
|
|
|
|
/* Counter to keep track of active tcp streams */
|
|
static unsigned int active_tcp_streams = 0;
|
|
|
|
|
|
static int uv_tcp_set_socket(uv_loop_t* loop, uv_tcp_t* handle,
|
|
SOCKET socket) {
|
|
DWORD yes = 1;
|
|
|
|
assert(handle->socket == INVALID_SOCKET);
|
|
|
|
/* Set the socket to nonblocking mode */
|
|
if (ioctlsocket(socket, FIONBIO, &yes) == SOCKET_ERROR) {
|
|
uv_set_sys_error(loop, WSAGetLastError());
|
|
return -1;
|
|
}
|
|
|
|
/* Make the socket non-inheritable */
|
|
if (!SetHandleInformation((HANDLE)socket, HANDLE_FLAG_INHERIT, 0)) {
|
|
uv_set_sys_error(loop, GetLastError());
|
|
return -1;
|
|
}
|
|
|
|
/* Associate it with the I/O completion port. */
|
|
/* Use uv_handle_t pointer as completion key. */
|
|
if (CreateIoCompletionPort((HANDLE)socket,
|
|
loop->iocp,
|
|
(ULONG_PTR)socket,
|
|
0) == NULL) {
|
|
uv_set_sys_error(loop, GetLastError());
|
|
return -1;
|
|
}
|
|
|
|
if (pSetFileCompletionNotificationModes) {
|
|
if (pSetFileCompletionNotificationModes((HANDLE) socket,
|
|
FILE_SKIP_SET_EVENT_ON_HANDLE |
|
|
FILE_SKIP_COMPLETION_PORT_ON_SUCCESS)) {
|
|
handle->flags |= UV_HANDLE_SYNC_BYPASS_IOCP;
|
|
} else if (GetLastError() != ERROR_INVALID_FUNCTION) {
|
|
uv_set_sys_error(loop, GetLastError());
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
handle->socket = socket;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
int uv_tcp_init(uv_loop_t* loop, uv_tcp_t* handle) {
|
|
uv_stream_init(loop, (uv_stream_t*)handle);
|
|
|
|
handle->accept_reqs = NULL;
|
|
handle->pending_accepts = NULL;
|
|
handle->socket = INVALID_SOCKET;
|
|
handle->type = UV_TCP;
|
|
handle->reqs_pending = 0;
|
|
|
|
loop->counters.tcp_init++;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
void uv_tcp_endgame(uv_loop_t* loop, uv_tcp_t* handle) {
|
|
uv_err_t err;
|
|
int status;
|
|
|
|
if (handle->flags & UV_HANDLE_CONNECTION &&
|
|
handle->flags & UV_HANDLE_SHUTTING &&
|
|
!(handle->flags & UV_HANDLE_SHUT) &&
|
|
handle->write_reqs_pending == 0) {
|
|
|
|
if (shutdown(handle->socket, SD_SEND) != SOCKET_ERROR) {
|
|
status = 0;
|
|
handle->flags |= UV_HANDLE_SHUT;
|
|
} else {
|
|
status = -1;
|
|
err = uv_new_sys_error(WSAGetLastError());
|
|
}
|
|
if (handle->shutdown_req->cb) {
|
|
if (status == -1) {
|
|
loop->last_error = err;
|
|
}
|
|
handle->shutdown_req->cb(handle->shutdown_req, status);
|
|
}
|
|
handle->reqs_pending--;
|
|
}
|
|
|
|
if (handle->flags & UV_HANDLE_CLOSING &&
|
|
handle->reqs_pending == 0) {
|
|
assert(!(handle->flags & UV_HANDLE_CLOSED));
|
|
handle->flags |= UV_HANDLE_CLOSED;
|
|
|
|
if (!(handle->flags & UV_HANDLE_CONNECTION) && handle->accept_reqs) {
|
|
free(handle->accept_reqs);
|
|
handle->accept_reqs = NULL;
|
|
}
|
|
|
|
if (handle->close_cb) {
|
|
handle->close_cb((uv_handle_t*)handle);
|
|
}
|
|
|
|
active_tcp_streams--;
|
|
|
|
uv_unref(loop);
|
|
}
|
|
}
|
|
|
|
|
|
static int uv__bind(uv_loop_t* loop, uv_tcp_t* handle, int domain,
|
|
struct sockaddr* addr, int addrsize) {
|
|
DWORD err;
|
|
int r;
|
|
SOCKET sock;
|
|
|
|
if (handle->socket == INVALID_SOCKET) {
|
|
sock = socket(domain, SOCK_STREAM, 0);
|
|
if (sock == INVALID_SOCKET) {
|
|
uv_set_sys_error(loop, WSAGetLastError());
|
|
return -1;
|
|
}
|
|
|
|
if (uv_tcp_set_socket(loop, handle, sock) == -1) {
|
|
closesocket(sock);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
r = bind(handle->socket, addr, addrsize);
|
|
|
|
if (r == SOCKET_ERROR) {
|
|
err = WSAGetLastError();
|
|
if (err == WSAEADDRINUSE) {
|
|
/* Some errors are not to be reported until connect() or listen() */
|
|
handle->bind_error = uv_new_sys_error(err);
|
|
handle->flags |= UV_HANDLE_BIND_ERROR;
|
|
} else {
|
|
uv_set_sys_error(loop, err);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
handle->flags |= UV_HANDLE_BOUND;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
int uv_tcp_bind(uv_tcp_t* handle, struct sockaddr_in addr) {
|
|
uv_loop_t* loop = handle->loop;
|
|
|
|
if (addr.sin_family != AF_INET) {
|
|
uv_set_sys_error(loop, WSAEFAULT);
|
|
return -1;
|
|
}
|
|
|
|
return uv__bind(loop,
|
|
handle,
|
|
AF_INET,
|
|
(struct sockaddr*)&addr,
|
|
sizeof(struct sockaddr_in));
|
|
}
|
|
|
|
|
|
int uv_tcp_bind6(uv_tcp_t* handle, struct sockaddr_in6 addr) {
|
|
uv_loop_t* loop = handle->loop;
|
|
|
|
if (addr.sin6_family != AF_INET6) {
|
|
uv_set_sys_error(loop, WSAEFAULT);
|
|
return -1;
|
|
}
|
|
|
|
if (uv_allow_ipv6) {
|
|
handle->flags |= UV_HANDLE_IPV6;
|
|
return uv__bind(loop,
|
|
handle,
|
|
AF_INET6,
|
|
(struct sockaddr*)&addr,
|
|
sizeof(struct sockaddr_in6));
|
|
|
|
} else {
|
|
uv_set_sys_error(loop, WSAEAFNOSUPPORT);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
|
|
static void uv_tcp_queue_accept(uv_tcp_t* handle, uv_tcp_accept_t* req) {
|
|
uv_loop_t* loop = handle->loop;
|
|
BOOL success;
|
|
DWORD bytes;
|
|
SOCKET accept_socket;
|
|
short family;
|
|
LPFN_ACCEPTEX pAcceptExFamily;
|
|
|
|
assert(handle->flags & UV_HANDLE_LISTENING);
|
|
assert(req->accept_socket == INVALID_SOCKET);
|
|
|
|
/* choose family and extension function */
|
|
if ((handle->flags & UV_HANDLE_IPV6) != 0) {
|
|
family = AF_INET6;
|
|
pAcceptExFamily = pAcceptEx6;
|
|
} else {
|
|
family = AF_INET;
|
|
pAcceptExFamily = pAcceptEx;
|
|
}
|
|
|
|
/* Open a socket for the accepted connection. */
|
|
accept_socket = socket(family, SOCK_STREAM, 0);
|
|
if (accept_socket == INVALID_SOCKET) {
|
|
SET_REQ_ERROR(req, WSAGetLastError());
|
|
uv_insert_pending_req(loop, (uv_req_t*)req);
|
|
handle->reqs_pending++;
|
|
return;
|
|
}
|
|
|
|
/* Prepare the overlapped structure. */
|
|
memset(&(req->overlapped), 0, sizeof(req->overlapped));
|
|
|
|
success = pAcceptExFamily(handle->socket,
|
|
accept_socket,
|
|
(void*)req->accept_buffer,
|
|
0,
|
|
sizeof(struct sockaddr_storage),
|
|
sizeof(struct sockaddr_storage),
|
|
&bytes,
|
|
&req->overlapped);
|
|
|
|
if (UV_SUCCEEDED_WITHOUT_IOCP(success)) {
|
|
/* Process the req without IOCP. */
|
|
req->accept_socket = accept_socket;
|
|
handle->reqs_pending++;
|
|
uv_insert_pending_req(loop, (uv_req_t*)req);
|
|
} else if (UV_SUCCEEDED_WITH_IOCP(success)) {
|
|
/* The req will be processed with IOCP. */
|
|
req->accept_socket = accept_socket;
|
|
handle->reqs_pending++;
|
|
} else {
|
|
/* Make this req pending reporting an error. */
|
|
SET_REQ_ERROR(req, WSAGetLastError());
|
|
uv_insert_pending_req(loop, (uv_req_t*)req);
|
|
handle->reqs_pending++;
|
|
/* Destroy the preallocated client socket. */
|
|
closesocket(accept_socket);
|
|
}
|
|
}
|
|
|
|
|
|
static void uv_tcp_queue_read(uv_loop_t* loop, uv_tcp_t* handle) {
|
|
uv_req_t* req;
|
|
uv_buf_t buf;
|
|
int result;
|
|
DWORD bytes, flags;
|
|
|
|
assert(handle->flags & UV_HANDLE_READING);
|
|
assert(!(handle->flags & UV_HANDLE_READ_PENDING));
|
|
|
|
req = &handle->read_req;
|
|
memset(&req->overlapped, 0, sizeof(req->overlapped));
|
|
|
|
/*
|
|
* Preallocate a read buffer if the number of active streams is below
|
|
* the threshold.
|
|
*/
|
|
if (active_tcp_streams < uv_active_tcp_streams_threshold) {
|
|
handle->flags &= ~UV_HANDLE_ZERO_READ;
|
|
handle->read_buffer = handle->alloc_cb((uv_handle_t*) handle, 65536);
|
|
assert(handle->read_buffer.len > 0);
|
|
buf = handle->read_buffer;
|
|
} else {
|
|
handle->flags |= UV_HANDLE_ZERO_READ;
|
|
buf.base = (char*) &uv_zero_;
|
|
buf.len = 0;
|
|
}
|
|
|
|
flags = 0;
|
|
result = WSARecv(handle->socket,
|
|
(WSABUF*)&buf,
|
|
1,
|
|
&bytes,
|
|
&flags,
|
|
&req->overlapped,
|
|
NULL);
|
|
|
|
if (UV_SUCCEEDED_WITHOUT_IOCP(result == 0)) {
|
|
/* Process the req without IOCP. */
|
|
handle->flags |= UV_HANDLE_READ_PENDING;
|
|
req->overlapped.InternalHigh = bytes;
|
|
handle->reqs_pending++;
|
|
uv_insert_pending_req(loop, req);
|
|
} else if (UV_SUCCEEDED_WITH_IOCP(result == 0)) {
|
|
/* The req will be processed with IOCP. */
|
|
handle->flags |= UV_HANDLE_READ_PENDING;
|
|
handle->reqs_pending++;
|
|
} else {
|
|
/* Make this req pending reporting an error. */
|
|
SET_REQ_ERROR(req, WSAGetLastError());
|
|
uv_insert_pending_req(loop, req);
|
|
handle->reqs_pending++;
|
|
}
|
|
}
|
|
|
|
|
|
int uv_tcp_listen(uv_tcp_t* handle, int backlog, uv_connection_cb cb) {
|
|
uv_loop_t* loop = handle->loop;
|
|
unsigned int i;
|
|
uv_tcp_accept_t* req;
|
|
|
|
assert(backlog > 0);
|
|
|
|
if (handle->flags & UV_HANDLE_BIND_ERROR) {
|
|
loop->last_error = handle->bind_error;
|
|
return -1;
|
|
}
|
|
|
|
if (handle->flags & UV_HANDLE_LISTENING ||
|
|
handle->flags & UV_HANDLE_READING) {
|
|
/* Already listening. */
|
|
uv_set_sys_error(loop, WSAEALREADY);
|
|
return -1;
|
|
}
|
|
|
|
if (!(handle->flags & UV_HANDLE_BOUND) &&
|
|
uv_tcp_bind(handle, uv_addr_ip4_any_) < 0)
|
|
return -1;
|
|
|
|
if (listen(handle->socket, backlog) == SOCKET_ERROR) {
|
|
uv_set_sys_error(loop, WSAGetLastError());
|
|
return -1;
|
|
}
|
|
|
|
handle->flags |= UV_HANDLE_LISTENING;
|
|
handle->connection_cb = cb;
|
|
|
|
assert(!handle->accept_reqs);
|
|
handle->accept_reqs = (uv_tcp_accept_t*)
|
|
malloc(uv_simultaneous_server_accepts * sizeof(uv_tcp_accept_t));
|
|
if (!handle->accept_reqs) {
|
|
uv_fatal_error(ERROR_OUTOFMEMORY, "malloc");
|
|
}
|
|
|
|
for (i = 0; i < uv_simultaneous_server_accepts; i++) {
|
|
req = &handle->accept_reqs[i];
|
|
uv_req_init(loop, (uv_req_t*)req);
|
|
req->type = UV_ACCEPT;
|
|
req->accept_socket = INVALID_SOCKET;
|
|
req->data = handle;
|
|
uv_tcp_queue_accept(handle, req);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
int uv_tcp_accept(uv_tcp_t* server, uv_tcp_t* client) {
|
|
uv_loop_t* loop = server->loop;
|
|
int rv = 0;
|
|
|
|
uv_tcp_accept_t* req = server->pending_accepts;
|
|
|
|
if (!req) {
|
|
/* No valid connections found, so we error out. */
|
|
uv_set_sys_error(loop, WSAEWOULDBLOCK);
|
|
return -1;
|
|
}
|
|
|
|
if (req->accept_socket == INVALID_SOCKET) {
|
|
uv_set_sys_error(loop, WSAENOTCONN);
|
|
return -1;
|
|
}
|
|
|
|
if (uv_tcp_set_socket(client->loop, client, req->accept_socket) == -1) {
|
|
closesocket(req->accept_socket);
|
|
rv = -1;
|
|
} else {
|
|
uv_connection_init((uv_stream_t*) client);
|
|
/* AcceptEx() implicitly binds the accepted socket. */
|
|
client->flags |= UV_HANDLE_BOUND;
|
|
}
|
|
|
|
/* Prepare the req to pick up a new connection */
|
|
server->pending_accepts = req->next_pending;
|
|
req->next_pending = NULL;
|
|
req->accept_socket = INVALID_SOCKET;
|
|
|
|
if (!(server->flags & UV_HANDLE_CLOSING)) {
|
|
uv_tcp_queue_accept(server, req);
|
|
}
|
|
|
|
active_tcp_streams++;
|
|
|
|
return rv;
|
|
}
|
|
|
|
|
|
int uv_tcp_read_start(uv_tcp_t* handle, uv_alloc_cb alloc_cb,
|
|
uv_read_cb read_cb) {
|
|
uv_loop_t* loop = handle->loop;
|
|
|
|
if (!(handle->flags & UV_HANDLE_CONNECTION)) {
|
|
uv_set_sys_error(loop, WSAEINVAL);
|
|
return -1;
|
|
}
|
|
|
|
if (handle->flags & UV_HANDLE_READING) {
|
|
uv_set_sys_error(loop, WSAEALREADY);
|
|
return -1;
|
|
}
|
|
|
|
if (handle->flags & UV_HANDLE_EOF) {
|
|
uv_set_sys_error(loop, WSAESHUTDOWN);
|
|
return -1;
|
|
}
|
|
|
|
handle->flags |= UV_HANDLE_READING;
|
|
handle->read_cb = read_cb;
|
|
handle->alloc_cb = alloc_cb;
|
|
|
|
/* If reading was stopped and then started again, there could stell be a */
|
|
/* read request pending. */
|
|
if (!(handle->flags & UV_HANDLE_READ_PENDING))
|
|
uv_tcp_queue_read(loop, handle);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
int uv_tcp_connect(uv_connect_t* req, uv_tcp_t* handle,
|
|
struct sockaddr_in address, uv_connect_cb cb) {
|
|
uv_loop_t* loop = handle->loop;
|
|
int addrsize = sizeof(struct sockaddr_in);
|
|
BOOL success;
|
|
DWORD bytes;
|
|
|
|
if (handle->flags & UV_HANDLE_BIND_ERROR) {
|
|
loop->last_error = handle->bind_error;
|
|
return -1;
|
|
}
|
|
|
|
if (address.sin_family != AF_INET) {
|
|
uv_set_sys_error(loop, WSAEFAULT);
|
|
return -1;
|
|
}
|
|
|
|
if (!(handle->flags & UV_HANDLE_BOUND) &&
|
|
uv_tcp_bind(handle, uv_addr_ip4_any_) < 0)
|
|
return -1;
|
|
|
|
uv_req_init(loop, (uv_req_t*) req);
|
|
req->type = UV_CONNECT;
|
|
req->handle = (uv_stream_t*) handle;
|
|
req->cb = cb;
|
|
memset(&req->overlapped, 0, sizeof(req->overlapped));
|
|
|
|
success = pConnectEx(handle->socket,
|
|
(struct sockaddr*) &address,
|
|
addrsize,
|
|
NULL,
|
|
0,
|
|
&bytes,
|
|
&req->overlapped);
|
|
|
|
if (UV_SUCCEEDED_WITHOUT_IOCP(success)) {
|
|
/* Process the req without IOCP. */
|
|
handle->reqs_pending++;
|
|
uv_insert_pending_req(loop, (uv_req_t*)req);
|
|
} else if (UV_SUCCEEDED_WITH_IOCP(success)) {
|
|
/* The req will be processed with IOCP. */
|
|
handle->reqs_pending++;
|
|
} else {
|
|
uv_set_sys_error(loop, WSAGetLastError());
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
int uv_tcp_connect6(uv_connect_t* req, uv_tcp_t* handle,
|
|
struct sockaddr_in6 address, uv_connect_cb cb) {
|
|
uv_loop_t* loop = handle->loop;
|
|
int addrsize = sizeof(struct sockaddr_in6);
|
|
BOOL success;
|
|
DWORD bytes;
|
|
|
|
if (!uv_allow_ipv6) {
|
|
uv_new_sys_error(WSAEAFNOSUPPORT);
|
|
return -1;
|
|
}
|
|
|
|
if (handle->flags & UV_HANDLE_BIND_ERROR) {
|
|
loop->last_error = handle->bind_error;
|
|
return -1;
|
|
}
|
|
|
|
if (address.sin6_family != AF_INET6) {
|
|
uv_set_sys_error(loop, WSAEFAULT);
|
|
return -1;
|
|
}
|
|
|
|
if (!(handle->flags & UV_HANDLE_BOUND) &&
|
|
uv_tcp_bind6(handle, uv_addr_ip6_any_) < 0)
|
|
return -1;
|
|
|
|
uv_req_init(loop, (uv_req_t*) req);
|
|
req->type = UV_CONNECT;
|
|
req->handle = (uv_stream_t*) handle;
|
|
req->cb = cb;
|
|
memset(&req->overlapped, 0, sizeof(req->overlapped));
|
|
|
|
success = pConnectEx6(handle->socket,
|
|
(struct sockaddr*) &address,
|
|
addrsize,
|
|
NULL,
|
|
0,
|
|
&bytes,
|
|
&req->overlapped);
|
|
|
|
if (UV_SUCCEEDED_WITHOUT_IOCP(success)) {
|
|
handle->reqs_pending++;
|
|
uv_insert_pending_req(loop, (uv_req_t*)req);
|
|
} else if (UV_SUCCEEDED_WITH_IOCP(success)) {
|
|
handle->reqs_pending++;
|
|
} else {
|
|
uv_set_sys_error(loop, WSAGetLastError());
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
int uv_tcp_getsockname(uv_tcp_t* handle, struct sockaddr* name,
|
|
int* namelen) {
|
|
uv_loop_t* loop = handle->loop;
|
|
int result;
|
|
|
|
if (!(handle->flags & UV_HANDLE_BOUND)) {
|
|
uv_set_sys_error(loop, WSAEINVAL);
|
|
return -1;
|
|
}
|
|
|
|
if (handle->flags & UV_HANDLE_BIND_ERROR) {
|
|
loop->last_error = handle->bind_error;
|
|
return -1;
|
|
}
|
|
|
|
result = getsockname(handle->socket, name, namelen);
|
|
if (result != 0) {
|
|
uv_set_sys_error(loop, WSAGetLastError());
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
int uv_tcp_getpeername(uv_tcp_t* handle, struct sockaddr* name,
|
|
int* namelen) {
|
|
uv_loop_t* loop = handle->loop;
|
|
int result;
|
|
|
|
if (!(handle->flags & UV_HANDLE_BOUND)) {
|
|
uv_set_sys_error(loop, WSAEINVAL);
|
|
return -1;
|
|
}
|
|
|
|
if (handle->flags & UV_HANDLE_BIND_ERROR) {
|
|
loop->last_error = handle->bind_error;
|
|
return -1;
|
|
}
|
|
|
|
result = getpeername(handle->socket, name, namelen);
|
|
if (result != 0) {
|
|
uv_set_sys_error(loop, WSAGetLastError());
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
int uv_tcp_write(uv_loop_t* loop, uv_write_t* req, uv_tcp_t* handle,
|
|
uv_buf_t bufs[], int bufcnt, uv_write_cb cb) {
|
|
int result;
|
|
DWORD bytes;
|
|
|
|
if (!(handle->flags & UV_HANDLE_CONNECTION)) {
|
|
uv_set_sys_error(loop, WSAEINVAL);
|
|
return -1;
|
|
}
|
|
|
|
if (handle->flags & UV_HANDLE_SHUTTING) {
|
|
uv_set_sys_error(loop, WSAESHUTDOWN);
|
|
return -1;
|
|
}
|
|
|
|
uv_req_init(loop, (uv_req_t*) req);
|
|
req->type = UV_WRITE;
|
|
req->handle = (uv_stream_t*) handle;
|
|
req->cb = cb;
|
|
memset(&req->overlapped, 0, sizeof(req->overlapped));
|
|
|
|
result = WSASend(handle->socket,
|
|
(WSABUF*)bufs,
|
|
bufcnt,
|
|
&bytes,
|
|
0,
|
|
&req->overlapped,
|
|
NULL);
|
|
|
|
if (UV_SUCCEEDED_WITHOUT_IOCP(result == 0)) {
|
|
/* Request completed immediately. */
|
|
req->queued_bytes = 0;
|
|
handle->reqs_pending++;
|
|
handle->write_reqs_pending++;
|
|
uv_insert_pending_req(loop, (uv_req_t*) req);
|
|
} else if (UV_SUCCEEDED_WITH_IOCP(result == 0)) {
|
|
/* Request queued by the kernel. */
|
|
req->queued_bytes = uv_count_bufs(bufs, bufcnt);
|
|
handle->reqs_pending++;
|
|
handle->write_reqs_pending++;
|
|
handle->write_queue_size += req->queued_bytes;
|
|
} else {
|
|
/* Send failed due to an error. */
|
|
uv_set_sys_error(loop, WSAGetLastError());
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
void uv_process_tcp_read_req(uv_loop_t* loop, uv_tcp_t* handle,
|
|
uv_req_t* req) {
|
|
DWORD bytes, flags, err;
|
|
uv_buf_t buf;
|
|
|
|
assert(handle->type == UV_TCP);
|
|
|
|
handle->flags &= ~UV_HANDLE_READ_PENDING;
|
|
|
|
if (!REQ_SUCCESS(req)) {
|
|
/* An error occurred doing the read. */
|
|
if ((handle->flags & UV_HANDLE_READING)) {
|
|
handle->flags &= ~UV_HANDLE_READING;
|
|
loop->last_error = GET_REQ_UV_SOCK_ERROR(req);
|
|
buf = (handle->flags & UV_HANDLE_ZERO_READ) ?
|
|
uv_buf_init(NULL, 0) : handle->read_buffer;
|
|
handle->read_cb((uv_stream_t*)handle, -1, buf);
|
|
}
|
|
} else {
|
|
if (!(handle->flags & UV_HANDLE_ZERO_READ)) {
|
|
/* The read was done with a non-zero buffer length. */
|
|
if (req->overlapped.InternalHigh > 0) {
|
|
/* Successful read */
|
|
handle->read_cb((uv_stream_t*)handle,
|
|
req->overlapped.InternalHigh,
|
|
handle->read_buffer);
|
|
/* Read again only if bytes == buf.len */
|
|
if (req->overlapped.InternalHigh < handle->read_buffer.len) {
|
|
goto done;
|
|
}
|
|
} else {
|
|
/* Connection closed */
|
|
handle->flags &= ~UV_HANDLE_READING;
|
|
handle->flags |= UV_HANDLE_EOF;
|
|
loop->last_error.code = UV_EOF;
|
|
loop->last_error.sys_errno_ = ERROR_SUCCESS;
|
|
buf.base = 0;
|
|
buf.len = 0;
|
|
handle->read_cb((uv_stream_t*)handle, -1, handle->read_buffer);
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
/* Do nonblocking reads until the buffer is empty */
|
|
while (handle->flags & UV_HANDLE_READING) {
|
|
buf = handle->alloc_cb((uv_handle_t*) handle, 65536);
|
|
assert(buf.len > 0);
|
|
flags = 0;
|
|
if (WSARecv(handle->socket,
|
|
(WSABUF*)&buf,
|
|
1,
|
|
&bytes,
|
|
&flags,
|
|
NULL,
|
|
NULL) != SOCKET_ERROR) {
|
|
if (bytes > 0) {
|
|
/* Successful read */
|
|
handle->read_cb((uv_stream_t*)handle, bytes, buf);
|
|
/* Read again only if bytes == buf.len */
|
|
if (bytes < buf.len) {
|
|
break;
|
|
}
|
|
} else {
|
|
/* Connection closed */
|
|
handle->flags &= ~UV_HANDLE_READING;
|
|
handle->flags |= UV_HANDLE_EOF;
|
|
loop->last_error.code = UV_EOF;
|
|
loop->last_error.sys_errno_ = ERROR_SUCCESS;
|
|
handle->read_cb((uv_stream_t*)handle, -1, buf);
|
|
break;
|
|
}
|
|
} else {
|
|
err = WSAGetLastError();
|
|
if (err == WSAEWOULDBLOCK) {
|
|
/* Read buffer was completely empty, report a 0-byte read. */
|
|
uv_set_sys_error(loop, WSAEWOULDBLOCK);
|
|
handle->read_cb((uv_stream_t*)handle, 0, buf);
|
|
} else {
|
|
/* Ouch! serious error. */
|
|
uv_set_sys_error(loop, err);
|
|
handle->flags &= ~UV_HANDLE_READING;
|
|
handle->read_cb((uv_stream_t*)handle, -1, buf);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
done:
|
|
/* Post another read if still reading and not closing. */
|
|
if ((handle->flags & UV_HANDLE_READING) &&
|
|
!(handle->flags & UV_HANDLE_READ_PENDING)) {
|
|
uv_tcp_queue_read(loop, handle);
|
|
}
|
|
}
|
|
|
|
DECREASE_PENDING_REQ_COUNT(handle);
|
|
}
|
|
|
|
|
|
void uv_process_tcp_write_req(uv_loop_t* loop, uv_tcp_t* handle,
|
|
uv_write_t* req) {
|
|
assert(handle->type == UV_TCP);
|
|
|
|
handle->write_queue_size -= req->queued_bytes;
|
|
|
|
if (req->cb) {
|
|
loop->last_error = GET_REQ_UV_SOCK_ERROR(req);
|
|
((uv_write_cb)req->cb)(req, loop->last_error.code == UV_OK ? 0 : -1);
|
|
}
|
|
|
|
handle->write_reqs_pending--;
|
|
if (handle->flags & UV_HANDLE_SHUTTING &&
|
|
handle->write_reqs_pending == 0) {
|
|
uv_want_endgame(loop, (uv_handle_t*)handle);
|
|
}
|
|
|
|
DECREASE_PENDING_REQ_COUNT(handle);
|
|
}
|
|
|
|
|
|
void uv_process_tcp_accept_req(uv_loop_t* loop, uv_tcp_t* handle,
|
|
uv_req_t* raw_req) {
|
|
uv_tcp_accept_t* req = (uv_tcp_accept_t*) raw_req;
|
|
|
|
assert(handle->type == UV_TCP);
|
|
|
|
/* If handle->accepted_socket is not a valid socket, then */
|
|
/* uv_queue_accept must have failed. This is a serious error. We stop */
|
|
/* accepting connections and report this error to the connection */
|
|
/* callback. */
|
|
if (req->accept_socket == INVALID_SOCKET) {
|
|
if (handle->flags & UV_HANDLE_LISTENING) {
|
|
handle->flags &= ~UV_HANDLE_LISTENING;
|
|
if (handle->connection_cb) {
|
|
loop->last_error = GET_REQ_UV_SOCK_ERROR(req);
|
|
handle->connection_cb((uv_stream_t*)handle, -1);
|
|
}
|
|
}
|
|
} else if (REQ_SUCCESS(req) &&
|
|
setsockopt(req->accept_socket,
|
|
SOL_SOCKET,
|
|
SO_UPDATE_ACCEPT_CONTEXT,
|
|
(char*)&handle->socket,
|
|
sizeof(handle->socket)) == 0) {
|
|
req->next_pending = handle->pending_accepts;
|
|
handle->pending_accepts = req;
|
|
|
|
/* Accept and SO_UPDATE_ACCEPT_CONTEXT were successful. */
|
|
if (handle->connection_cb) {
|
|
handle->connection_cb((uv_stream_t*)handle, 0);
|
|
}
|
|
} else {
|
|
/* Error related to accepted socket is ignored because the server */
|
|
/* socket may still be healthy. If the server socket is broken
|
|
/* uv_queue_accept will detect it. */
|
|
closesocket(req->accept_socket);
|
|
req->accept_socket = INVALID_SOCKET;
|
|
if (handle->flags & UV_HANDLE_LISTENING) {
|
|
uv_tcp_queue_accept(handle, req);
|
|
}
|
|
}
|
|
|
|
DECREASE_PENDING_REQ_COUNT(handle);
|
|
}
|
|
|
|
|
|
void uv_process_tcp_connect_req(uv_loop_t* loop, uv_tcp_t* handle,
|
|
uv_connect_t* req) {
|
|
assert(handle->type == UV_TCP);
|
|
|
|
if (req->cb) {
|
|
if (REQ_SUCCESS(req)) {
|
|
if (setsockopt(handle->socket,
|
|
SOL_SOCKET,
|
|
SO_UPDATE_CONNECT_CONTEXT,
|
|
NULL,
|
|
0) == 0) {
|
|
uv_connection_init((uv_stream_t*)handle);
|
|
active_tcp_streams++;
|
|
((uv_connect_cb)req->cb)(req, 0);
|
|
} else {
|
|
uv_set_sys_error(loop, WSAGetLastError());
|
|
((uv_connect_cb)req->cb)(req, -1);
|
|
}
|
|
} else {
|
|
loop->last_error = GET_REQ_UV_SOCK_ERROR(req);
|
|
((uv_connect_cb)req->cb)(req, -1);
|
|
}
|
|
}
|
|
|
|
DECREASE_PENDING_REQ_COUNT(handle);
|
|
}
|