pn_socket_t pni_iocp_begin_connect(iocp_t *iocp, pn_socket_t sock, struct addrinfo *addr, pn_error_t *error)
{
// addr lives for the duration of the async connect. Caller has passed ownership here.
// See connect_result_finalize().
// Use of Windows-specific ConnectEx() requires our socket to be "loosely" pre-bound:
sockaddr_storage sa;
memset(&sa, 0, sizeof(sa));
sa.ss_family = addr->ai_family;
if (bind(sock, (SOCKADDR *) &sa, addr->ai_addrlen)) {
pni_win32_error(error, "begin async connection", WSAGetLastError());
if (iocp->iocp_trace)
iocp_log("%s\n", pn_error_text(error));
closesocket(sock);
freeaddrinfo(addr);
return INVALID_SOCKET;
}
iocpdesc_t *iocpd = pni_iocpdesc_create(iocp, sock, false);
bind_to_completion_port(iocpd);
LPFN_CONNECTEX fn_connect_ex = lookup_connect_ex(iocpd->socket);
connect_result_t *result = connect_result(iocpd, addr);
DWORD unused;
bool success = fn_connect_ex(iocpd->socket, result->addrinfo->ai_addr, result->addrinfo->ai_addrlen,
NULL, 0, &unused, (LPOVERLAPPED) result);
if (!success && WSAGetLastError() != ERROR_IO_PENDING) {
pni_win32_error(error, "ConnectEx failure", WSAGetLastError());
pn_free(result);
iocpd->write_closed = true;
iocpd->read_closed = true;
pni_iocp_begin_close(iocpd);
sock = INVALID_SOCKET;
if (iocp->iocp_trace)
iocp_log("%s\n", pn_error_text(error));
} else {
iocpd->ops_in_progress++;
}
return sock;
}
Stream::ConnectEx Stream::connect_ex () const
{
return (lookup_connect_ex(handle()));
}