/**
* Client mode connection thread.
*
* @returns iprt status code.
* @param hSelf Thread handle. Use to sleep on. The main thread will
* signal it to speed up thread shutdown.
* @param pvUser Ignored.
*/
static DECLCALLBACK(int) txsTcpClientConnectThread(RTTHREAD hSelf, void *pvUser)
{
for (;;)
{
/* Stop? */
RTCritSectEnter(&g_TcpCritSect);
bool fStop = g_fTcpStopConnecting;
RTCritSectLeave(&g_TcpCritSect);
if (fStop)
return VINF_SUCCESS;
/* Try connect. */ /** @todo make cancelable! */
RTSOCKET hTcpClient;
Log2(("Calling RTTcpClientConnect(%s, %u,)...\n", g_szTcpConnectAddr, g_uTcpConnectPort));
int rc = RTTcpClientConnectEx(g_szTcpConnectAddr, g_uTcpConnectPort, &hTcpClient,
RT_SOCKETCONNECT_DEFAULT_WAIT, &g_pTcpConnectCancelCookie);
Log(("txsTcpRecvPkt: RTTcpClientConnect -> %Rrc\n", rc));
if (RT_SUCCESS(rc))
{
hTcpClient = txsTcpSetClient(hTcpClient, true /*fFromServer*/);
RTTcpClientCloseEx(hTcpClient, true /* fGracefulShutdown*/);
break;
}
if (txsTcpIsFatalClientConnectStatus(rc))
return rc;
/* Delay a wee bit before retrying. */
RTThreadUserWait(hSelf, 1536);
}
return VINF_SUCCESS;
}
/**
* Disconnects from the host and resets the receive state.
*
* @returns nothing.
*/
void USBProxyBackendUsbIp::disconnect()
{
if (m->hSocket != NIL_RTSOCKET)
{
int rc = RTPollSetRemove(m->hPollSet, USBIP_POLL_ID_SOCKET);
Assert(RT_SUCCESS(rc) || rc == VERR_POLL_HANDLE_ID_NOT_FOUND);
RTTcpClientCloseEx(m->hSocket, false /*fGracefulShutdown*/);
m->hSocket = NIL_RTSOCKET;
}
resetRecvState();
}
/**
* Tries to reconnect to the USB/IP host.
*
* @returns VBox status code.
*/
int USBProxyBackendUsbIp::reconnect()
{
/* Make sure we are disconnected. */
disconnect();
/* Connect to the USB/IP host. */
int rc = RTTcpClientConnect(m->pszHost, m->uPort, &m->hSocket);
if (RT_SUCCESS(rc))
{
rc = RTTcpSetSendCoalescing(m->hSocket, false);
if (RT_FAILURE(rc))
LogRel(("USB/IP: Disabling send coalescing failed (rc=%Rrc), continuing nevertheless but expect increased latency\n", rc));
rc = RTPollSetAddSocket(m->hPollSet, m->hSocket, RTPOLL_EVT_READ | RTPOLL_EVT_ERROR,
USBIP_POLL_ID_SOCKET);
if (RT_FAILURE(rc))
{
RTTcpClientCloseEx(m->hSocket, false /*fGracefulShutdown*/);
m->hSocket = NIL_RTSOCKET;
}
}
return rc;
}
