/* This function is an egress point, i.e. it returns libuv errors rather than
* system errors.
*/
int uv__tcp_bind(uv_tcp_t* handle,
const struct sockaddr* addr,
unsigned int addrlen) {
int err;
err = uv_tcp_try_bind(handle, addr, addrlen);
if (err)
return uv_translate_sys_error(err);
return 0;
}
static int uv_tcp_try_connect(uv_connect_t* req,
uv_tcp_t* handle,
const struct sockaddr* addr,
unsigned int addrlen,
uv_connect_cb cb) {
uv_loop_t* loop = handle->loop;
const struct sockaddr* bind_addr;
BOOL success;
DWORD bytes;
int err;
if (handle->flags & UV_HANDLE_BIND_ERROR) {
return handle->bind_error;
}
if (!(handle->flags & UV_HANDLE_BOUND)) {
if (addrlen == sizeof(uv_addr_ip4_any_)) {
bind_addr = (const struct sockaddr*) &uv_addr_ip4_any_;
} else if (addrlen == sizeof(uv_addr_ip6_any_)) {
bind_addr = (const struct sockaddr*) &uv_addr_ip6_any_;
} else {
abort();
}
err = uv_tcp_try_bind(handle, bind_addr, addrlen, 0);
if (err)
return err;
}
if (!handle->func_connectex) {
if (!uv_get_connectex_function(handle->socket, &handle->func_connectex)) {
return WSAEAFNOSUPPORT;
}
}
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 = handle->func_connectex(handle->socket,
addr,
addrlen,
NULL,
0,
&bytes,
&req->overlapped);
if (UV_SUCCEEDED_WITHOUT_IOCP(success)) {
/* Process the req without IOCP. */
handle->reqs_pending++;
REGISTER_HANDLE_REQ(loop, handle, req);
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++;
REGISTER_HANDLE_REQ(loop, handle, req);
} else {
return WSAGetLastError();
}
return 0;
}
int uv_tcp_listen(uv_tcp_t* handle, int backlog, uv_connection_cb cb) {
uv_loop_t* loop = handle->loop;
unsigned int i, simultaneous_accepts;
uv_tcp_accept_t* req;
int err;
assert(backlog > 0);
if (handle->flags & UV_HANDLE_LISTENING) {
handle->connection_cb = cb;
}
if (handle->flags & UV_HANDLE_READING) {
return WSAEISCONN;
}
if (handle->flags & UV_HANDLE_BIND_ERROR) {
return handle->bind_error;
}
if (!(handle->flags & UV_HANDLE_BOUND)) {
err = uv_tcp_try_bind(handle,
(const struct sockaddr*) &uv_addr_ip4_any_,
sizeof(uv_addr_ip4_any_),
0);
if (err)
return err;
}
if (!handle->func_acceptex) {
if (!uv_get_acceptex_function(handle->socket, &handle->func_acceptex)) {
return WSAEAFNOSUPPORT;
}
}
if (!(handle->flags & UV_HANDLE_SHARED_TCP_SOCKET) &&
listen(handle->socket, backlog) == SOCKET_ERROR) {
return WSAGetLastError();
}
handle->flags |= UV_HANDLE_LISTENING;
handle->connection_cb = cb;
INCREASE_ACTIVE_COUNT(loop, handle);
simultaneous_accepts = handle->flags & UV_HANDLE_TCP_SINGLE_ACCEPT ? 1
: uv_simultaneous_server_accepts;
if(!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 < simultaneous_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;
req->wait_handle = INVALID_HANDLE_VALUE;
if (handle->flags & UV_HANDLE_EMULATE_IOCP) {
req->event_handle = CreateEvent(NULL, 0, 0, NULL);
if (!req->event_handle) {
uv_fatal_error(GetLastError(), "CreateEvent");
}
} else {
req->event_handle = NULL;
}
uv_tcp_queue_accept(handle, req);
}
/* Initialize other unused requests too, because uv_tcp_endgame */
/* doesn't know how how many requests were intialized, so it will */
/* try to clean up {uv_simultaneous_server_accepts} requests. */
for (i = simultaneous_accepts; 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;
req->wait_handle = INVALID_HANDLE_VALUE;
req->event_handle = NULL;
}
}
return 0;
}