BOOL uv_get_acceptex_function(SOCKET socket, LPFN_ACCEPTEX* target) {
const GUID wsaid_acceptex = WSAID_ACCEPTEX;
return uv_get_extension_function(socket, wsaid_acceptex, (void**)target);
}
BOOL uv_get_connectex_function(SOCKET socket, LPFN_CONNECTEX* target) {
const GUID wsaid_connectex = WSAID_CONNECTEX;
return uv_get_extension_function(socket, wsaid_connectex, (void**)target);
}
/*
* Setup tcp subsystem
*/
void uv_winsock_startup() {
const GUID wsaid_connectex = WSAID_CONNECTEX;
const GUID wsaid_acceptex = WSAID_ACCEPTEX;
const GUID wsaid_getacceptexsockaddrs = WSAID_GETACCEPTEXSOCKADDRS;
const GUID wsaid_disconnectex = WSAID_DISCONNECTEX;
const GUID wsaid_transmitfile = WSAID_TRANSMITFILE;
WSADATA wsa_data;
int errorno;
SOCKET dummy;
SOCKET dummy6;
/* Initialize winsock */
errorno = WSAStartup(MAKEWORD(2, 2), &wsa_data);
if (errorno != 0) {
uv_fatal_error(errorno, "WSAStartup");
}
/* Set implicit binding address used by connectEx */
uv_addr_ip4_any_ = uv_ip4_addr("0.0.0.0", 0);
uv_addr_ip6_any_ = uv_ip6_addr("::", 0);
/* Retrieve the needed winsock extension function pointers. */
dummy = socket(AF_INET, SOCK_STREAM, IPPROTO_IP);
if (dummy == INVALID_SOCKET) {
uv_fatal_error(WSAGetLastError(), "socket");
}
if (!uv_get_extension_function(dummy,
wsaid_connectex,
(void**)&pConnectEx) ||
!uv_get_extension_function(dummy,
wsaid_acceptex,
(void**)&pAcceptEx) ||
!uv_get_extension_function(dummy,
wsaid_getacceptexsockaddrs,
(void**)&pGetAcceptExSockAddrs) ||
!uv_get_extension_function(dummy,
wsaid_disconnectex,
(void**)&pDisconnectEx) ||
!uv_get_extension_function(dummy,
wsaid_transmitfile,
(void**)&pTransmitFile)) {
uv_fatal_error(WSAGetLastError(),
"WSAIoctl(SIO_GET_EXTENSION_FUNCTION_POINTER)");
}
if (closesocket(dummy) == SOCKET_ERROR) {
uv_fatal_error(WSAGetLastError(), "closesocket");
}
/* optional IPv6 versions of winsock extension functions */
dummy6 = socket(AF_INET6, SOCK_STREAM, IPPROTO_IP);
if (dummy6 != INVALID_SOCKET) {
uv_allow_ipv6 = TRUE;
if (!uv_get_extension_function(dummy6,
wsaid_connectex,
(void**)&pConnectEx6) ||
!uv_get_extension_function(dummy6,
wsaid_acceptex,
(void**)&pAcceptEx6) ||
!uv_get_extension_function(dummy6,
wsaid_getacceptexsockaddrs,
(void**)&pGetAcceptExSockAddrs6) ||
!uv_get_extension_function(dummy6,
wsaid_disconnectex,
(void**)&pDisconnectEx6) ||
!uv_get_extension_function(dummy6,
wsaid_transmitfile,
(void**)&pTransmitFile6)) {
uv_allow_ipv6 = FALSE;
}
if (closesocket(dummy6) == SOCKET_ERROR) {
uv_fatal_error(WSAGetLastError(), "closesocket");
}
}
}