//--------------------------------------------------------------------------------------------------
void le_msg_AdvertiseService
(
le_msg_ServiceRef_t serviceRef ///< [in] Reference to the service.
)
//--------------------------------------------------------------------------------------------------
{
// Open a socket and connect it to the Service Directory.
int fd = unixSocket_CreateSeqPacketUnnamed();
// Check for failure.
LE_FATAL_IF(fd == LE_NOT_PERMITTED, "Permission to open socket denied.");
LE_FATAL_IF(fd == LE_FAULT, "Failed to open socket.");
// Warn if one of the three standard I/O streams have been somehow connected to the
// Service Directory.
if (fd < 3)
{
const char* streamNameStr;
switch (fd)
{
case 0:
streamNameStr = "stdin";
break;
case 1:
streamNameStr = "stdout";
break;
case 2:
streamNameStr = "stderr";
break;
}
LE_WARN("Service Directory connection mapped to %s.", streamNameStr);
}
le_result_t result = unixSocket_Connect(fd, LE_SVCDIR_SERVER_SOCKET_NAME);
LE_FATAL_IF(result != LE_OK,
"Failed to connect to Service Directory. Result = %d (%s).",
result,
LE_RESULT_TXT(result));
serviceRef->directorySocketFd = fd;
// Set the socket non-blocking.
fd_SetNonBlocking(fd);
// Start monitoring the socket for events.
StartMonitoringDirectorySocket(serviceRef);
// Send the Service ID to the Service Directory.
msgService_SendServiceId(serviceRef, fd);
// Wait for the Service Directory to respond by either dropping the connection
// (meaning that we have been denied permission to offer this service) or by
// forwarding us file descriptors for authenticated client connections.
}
//--------------------------------------------------------------------------------------------------
static void DirectorySocketWriteable
(
int fd
)
//--------------------------------------------------------------------------------------------------
{
Service_t* servicePtr = le_event_GetContextPtr();
if (servicePtr->state == LE_MSG_SERVICE_CONNECTING)
{
// Must have connected (or failed to do so).
int errCode = unixSocket_GetErrorState(servicePtr->directorySocketFd);
// Disable writeability notification.
le_event_ClearFdHandlerByEventType(servicePtr->fdMonitorRef, LE_EVENT_FD_WRITEABLE);
// If connection successful,
if (errCode == 0)
{
// Send the Service ID to the Service Directory.
msgService_SendServiceId(servicePtr, fd);
servicePtr->state = LE_MSG_SERVICE_ADVERTISED;
// Wait for the Service Directory to respond by either dropping the connection
// (meaning that we have been denied permission to offer this service) or by
// forwarding us file descriptors for authenticated client connections.
}
// If connection failed,
else
{
LE_FATAL("Failed to connect to Service Directory. SO_ERROR %d (%s).",
errCode,
strerror(errCode));
}
}
else
{
LE_CRIT("Unexpected writeability notification in state %d.", servicePtr->state);
}
}