internal AcceptorI(Instance instance, string adapterName, string host, int port)
{
_instance = instance;
_adapterName = adapterName;
_logger = instance.communicator().getLogger();
_backlog = instance.communicator().getProperties().getPropertyAsIntWithDefault("Ice.TCP.Backlog", 511);
//
// .NET requires that a certificate be supplied.
//
X509Certificate2Collection certs = instance.certs();
if(certs.Count == 0)
{
Ice.SecurityException ex = new Ice.SecurityException();
ex.reason = "IceSSL: certificate required for server endpoint";
throw ex;
}
try
{
_addr = IceInternal.Network.getAddressForServer(host, port, _instance.protocolSupport());
_fd = IceInternal.Network.createSocket(false, _addr.AddressFamily);
IceInternal.Network.setBlock(_fd, false);
IceInternal.Network.setTcpBufSize(_fd, _instance.communicator().getProperties(), _logger);
if(IceInternal.AssemblyUtil.platform_ != IceInternal.AssemblyUtil.Platform.Windows)
{
//
// Enable SO_REUSEADDR on Unix platforms to allow
// re-using the socket even if it's in the TIME_WAIT
// state. On Windows, this doesn't appear to be
// necessary and enabling SO_REUSEADDR would actually
// not be a good thing since it allows a second
// process to bind to an address even it's already
// bound by another process.
//
// TODO: using SO_EXCLUSIVEADDRUSE on Windows would
// probably be better but it's only supported by recent
// Windows versions (XP SP2, Windows Server 2003).
//
IceInternal.Network.setReuseAddress(_fd, true);
}
if(_instance.networkTraceLevel() >= 2)
{
string s = "attempting to bind to ssl socket " + IceInternal.Network.addrToString(_addr);
_logger.trace(_instance.networkTraceCategory(), s);
}
_addr = IceInternal.Network.doBind(_fd, _addr);
}
catch(System.Exception)
{
_fd = null;
throw;
}
}
internal static void traceSlicing(string kind, string typeId, string slicingCat, Ice.Logger logger)
{
lock (typeof(TraceUtil))
{
if (slicingIds.Add(typeId))
{
using (System.IO.StringWriter s = new System.IO.StringWriter(CultureInfo.CurrentCulture))
{
s.Write("unknown " + kind + " type `" + typeId + "'");
logger.trace(slicingCat, s.ToString());
}
}
}
}
internal void deadRemoteLogger(Ice.RemoteLoggerPrx remoteLogger, Ice.Logger logger, Ice.LocalException ex,
string operation)
{
//
// No need to convert remoteLogger as we only use its identity
//
if (removeRemoteLogger(remoteLogger))
{
if (_traceLevel > 0)
{
logger.trace(_traceCategory, "detached `" + remoteLogger.ToString() + "' because "
+ operation + " raised:\n" + ex.ToString());
}
}
}
internal static void traceRecv(Ice.InputStream str, Ice.Logger logger, TraceLevels tl)
{
if (tl.protocol >= 1)
{
int p = str.pos();
str.pos(0);
using (System.IO.StringWriter s = new System.IO.StringWriter(CultureInfo.CurrentCulture))
{
byte type = printMessage(s, str);
logger.trace(tl.protocolCat, "received " + getMessageTypeAsString(type) + " " + s.ToString());
}
str.pos(p);
}
}
internal static void trace(string heading, Ice.InputStream str, Ice.Logger logger, TraceLevels tl)
{
if (tl.protocol >= 1)
{
int p = str.pos();
str.pos(0);
using (System.IO.StringWriter s = new System.IO.StringWriter(CultureInfo.CurrentCulture))
{
s.Write(heading);
printMessage(s, str);
logger.trace(tl.protocolCat, s.ToString());
}
str.pos(p);
}
}
internal static void traceSend(Ice.OutputStream str, Ice.Logger logger, TraceLevels tl)
{
if (tl.protocol >= 1)
{
int p = str.pos();
Ice.InputStream iss = new Ice.InputStream(str.instance(), str.getEncoding(), str.getBuffer(), false);
iss.pos(0);
using (System.IO.StringWriter s = new System.IO.StringWriter(CultureInfo.CurrentCulture))
{
byte type = printMessage(s, iss);
logger.trace(tl.protocolCat, "sending " + getMessageTypeAsString(type) + " " + s.ToString());
}
str.pos(p);
}
}
internal TcpAcceptor(Instance instance, string host, int port)
{
instance_ = instance;
_traceLevels = instance.traceLevels();
_logger = instance.initializationData().logger;
_backlog = instance.initializationData().properties.getPropertyAsIntWithDefault("Ice.TCP.Backlog", 511);
try
{
_addr = Network.getAddressForServer(host, port, instance_.protocolSupport());
_fd = Network.createSocket(false, _addr.AddressFamily);
Network.setBlock(_fd, false);
#if !COMPACT
Network.setTcpBufSize(_fd, instance_.initializationData().properties, _logger);
#endif
if(AssemblyUtil.platform_ != AssemblyUtil.Platform.Windows)
{
//
// Enable SO_REUSEADDR on Unix platforms to allow
// re-using the socket even if it's in the TIME_WAIT
// state. On Windows, this doesn't appear to be
// necessary and enabling SO_REUSEADDR would actually
// not be a good thing since it allows a second
// process to bind to an address even it's already
// bound by another process.
//
// TODO: using SO_EXCLUSIVEADDRUSE on Windows would
// probably be better but it's only supported by recent
// Windows versions (XP SP2, Windows Server 2003).
//
Network.setReuseAddress(_fd, true);
}
if(_traceLevels.network >= 2)
{
string s = "attempting to bind to tcp socket " + Network.addrToString(_addr);
_logger.trace(_traceLevels.networkCat, s);
}
_addr = Network.doBind(_fd, _addr);
}
catch(System.Exception)
{
_fd = null;
throw;
}
}
internal static void trace(string heading, Ice.OutputStream str, Ice.Logger logger, TraceLevels tl)
{
if (tl.protocol >= 1)
{
int p = str.pos();
Ice.InputStream iss = new Ice.InputStream(str.instance(), str.getEncoding(), str.getBuffer(), false);
iss.pos(0);
using (System.IO.StringWriter s = new System.IO.StringWriter(CultureInfo.CurrentCulture))
{
s.Write(heading);
printMessage(s, iss);
logger.trace(tl.protocolCat, s.ToString());
}
str.pos(p);
}
}
public int checkRetryAfterException(Ice.LocalException ex, Reference @ref, bool sleep, ref int cnt)
{
TraceLevels traceLevels = instance_.traceLevels();
Ice.Logger logger = instance_.initializationData().logger;
//
// We don't retry batch requests because the exception might have caused
// the all the requests batched with the connection to be aborted and we
// want the application to be notified.
//
if (@ref.getMode() == Reference.Mode.ModeBatchOneway || @ref.getMode() == Reference.Mode.ModeBatchDatagram)
{
throw ex;
}
Ice.ObjectNotExistException one = ex as Ice.ObjectNotExistException;
if (one != null)
{
if (@ref.getRouterInfo() != null && one.operation.Equals("ice_add_proxy"))
{
//
// If we have a router, an ObjectNotExistException with an
// operation name "ice_add_proxy" indicates to the client
// that the router isn't aware of the proxy (for example,
// because it was evicted by the router). In this case, we
// must *always* retry, so that the missing proxy is added
// to the router.
//
@ref.getRouterInfo().clearCache(@ref);
if (traceLevels.retry >= 1)
{
string s = "retrying operation call to add proxy to router\n" + ex;
logger.trace(traceLevels.retryCat, s);
}
return(0); // We must always retry, so we don't look at the retry count.
}
else if (@ref.isIndirect())
{
//
// We retry ObjectNotExistException if the reference is
// indirect.
//
if (@ref.isWellKnown())
{
LocatorInfo li = @ref.getLocatorInfo();
if (li != null)
{
li.clearCache(@ref);
}
}
}
else
{
//
// For all other cases, we don't retry ObjectNotExistException.
//
throw ex;
}
}
else if (ex is Ice.RequestFailedException)
{
throw ex;
}
//
// There is no point in retrying an operation that resulted in a
// MarshalException. This must have been raised locally (because if
// it happened in a server it would result in an UnknownLocalException
// instead), which means there was a problem in this process that will
// not change if we try again.
//
// The most likely cause for a MarshalException is exceeding the
// maximum message size, which is represented by the subclass
// MemoryLimitException. For example, a client can attempt to send a
// message that exceeds the maximum memory size, or accumulate enough
// batch requests without flushing that the maximum size is reached.
//
// This latter case is especially problematic, because if we were to
// retry a batch request after a MarshalException, we would in fact
// silently discard the accumulated requests and allow new batch
// requests to accumulate. If the subsequent batched requests do not
// exceed the maximum message size, it appears to the client that all
// of the batched requests were accepted, when in reality only the
// last few are actually sent.
//
if (ex is Ice.MarshalException)
{
throw ex;
}
++cnt;
Debug.Assert(cnt > 0);
int interval;
if (cnt == (_retryIntervals.Length + 1) && ex is Ice.CloseConnectionException)
{
//
// A close connection exception is always retried at least once, even if the retry
// limit is reached.
//
interval = 0;
}
else if (cnt > _retryIntervals.Length)
{
if (traceLevels.retry >= 1)
{
string s = "cannot retry operation call because retry limit has been exceeded\n" + ex;
logger.trace(traceLevels.retryCat, s);
}
throw ex;
}
else
{
interval = _retryIntervals[cnt - 1];
}
if (traceLevels.retry >= 1)
{
string s = "retrying operation call";
if (interval > 0)
{
s += " in " + interval + "ms";
}
s += " because of exception\n" + ex;
logger.trace(traceLevels.retryCat, s);
}
if (sleep && interval > 0)
{
//
// Sleep before retrying.
//
System.Threading.Thread.Sleep(interval);
}
return(interval);
}
//
// Only for use by UdpEndpoint.
//
internal UdpTransceiver(Instance instance, string host, int port, string mcastInterface, bool connect)
{
_traceLevels = instance.traceLevels();
_logger = instance.initializationData().logger;
_stats = instance.initializationData().stats;
_state = connect ? StateNeedConnect : StateNotConnected;
_incoming = true;
try
{
_addr = Network.getAddressForServer(host, port, instance.protocolSupport());
_fd = Network.createSocket(true, _addr.AddressFamily);
setBufSize(instance);
Network.setBlock(_fd, false);
if(_traceLevels.network >= 2)
{
string s = "attempting to bind to udp socket " + Network.addrToString(_addr);
_logger.trace(_traceLevels.networkCat, s);
}
if(Network.isMulticast(_addr))
{
Network.setReuseAddress(_fd, true);
_mcastAddr = _addr;
if(AssemblyUtil.platform_ == AssemblyUtil.Platform.Windows)
{
//
// Windows does not allow binding to the mcast address itself
// so we bind to INADDR_ANY (0.0.0.0) instead. As a result,
// bi-directional connection won't work because the source
// address won't the multicast address and the client will
// therefore reject the datagram.
//
if(_addr.AddressFamily == AddressFamily.InterNetwork)
{
_addr = new IPEndPoint(IPAddress.Any, port);
}
else
{
_addr = new IPEndPoint(IPAddress.IPv6Any, port);
}
}
_addr = Network.doBind(_fd, _addr);
if(port == 0)
{
_mcastAddr.Port = _addr.Port;
}
Network.setMcastGroup(_fd, _mcastAddr.Address, mcastInterface);
}
else
{
if(AssemblyUtil.platform_ != AssemblyUtil.Platform.Windows)
{
//
// Enable SO_REUSEADDR on Unix platforms to allow
// re-using the socket even if it's in the TIME_WAIT
// state. On Windows, this doesn't appear to be
// necessary and enabling SO_REUSEADDR would actually
// not be a good thing since it allows a second
// process to bind to an address even it's already
// bound by another process.
//
// TODO: using SO_EXCLUSIVEADDRUSE on Windows would
// probably be better but it's only supported by recent
// Windows versions (XP SP2, Windows Server 2003).
//
Network.setReuseAddress(_fd, true);
}
_addr = Network.doBind(_fd, _addr);
}
if(_traceLevels.network >= 1)
{
StringBuilder s = new StringBuilder("starting to receive udp packets\n");
s.Append(ToString());
List<string> interfaces =
Network.getHostsForEndpointExpand(_addr.Address.ToString(), instance.protocolSupport(), true);
if(interfaces.Count != 0)
{
s.Append("\nlocal interfaces: ");
s.Append(String.Join(", ", interfaces.ToArray()));
}
_logger.trace(_traceLevels.networkCat, s.ToString());
}
}
catch(Ice.LocalException)
{
_fd = null;
throw;
}
}
public int checkRetryAfterException(Ice.LocalException ex, Reference @ref, ref int cnt)
{
TraceLevels traceLevels = _instance.traceLevels();
Ice.Logger logger = _instance.initializationData().logger;
if (@ref.getMode() == Reference.Mode.ModeBatchOneway || @ref.getMode() == Reference.Mode.ModeBatchDatagram)
{
Debug.Assert(false); // batch no longer implemented anyway
throw ex;
}
Ice.ObjectNotExistException one = ex as Ice.ObjectNotExistException;
if (one != null)
{
if (@ref.getRouterInfo() != null && one.operation.Equals("ice_add_proxy"))
{
//
// If we have a router, an ObjectNotExistException with an
// operation name "ice_add_proxy" indicates to the client
// that the router isn't aware of the proxy (for example,
// because it was evicted by the router). In this case, we
// must *always* retry, so that the missing proxy is added
// to the router.
//
@ref.getRouterInfo().clearCache(@ref);
if (traceLevels.retry >= 1)
{
string s = "retrying operation call to add proxy to router\n" + ex;
logger.trace(traceLevels.retryCat, s);
}
return(0); // We must always retry, so we don't look at the retry count.
}
else if (@ref.isIndirect())
{
//
// We retry ObjectNotExistException if the reference is
// indirect.
//
if (@ref.isWellKnown())
{
LocatorInfo li = @ref.getLocatorInfo();
if (li != null)
{
li.clearCache(@ref);
}
}
}
else
{
//
// For all other cases, we don't retry ObjectNotExistException.
//
throw ex;
}
}
else if (ex is Ice.RequestFailedException)
{
throw ex;
}
//
// There is no point in retrying an operation that resulted in a
// MarshalException. This must have been raised locally (because if
// it happened in a server it would result in an UnknownLocalException
// instead), which means there was a problem in this process that will
// not change if we try again.
//
if (ex is Ice.MarshalException)
{
throw ex;
}
//
// Don't retry if the communicator is destroyed, object adapter is deactivated,
// or connection is manually closed.
//
if (ex is Ice.CommunicatorDestroyedException ||
ex is Ice.ObjectAdapterDeactivatedException ||
ex is Ice.ConnectionManuallyClosedException)
{
throw ex;
}
//
// Don't retry invocation timeouts.
//
if (ex is Ice.InvocationTimeoutException || ex is Ice.InvocationCanceledException)
{
throw ex;
}
++cnt;
Debug.Assert(cnt > 0);
int interval;
if (cnt == (_retryIntervals.Length + 1) && ex is Ice.CloseConnectionException)
{
//
// A close connection exception is always retried at least once, even if the retry
// limit is reached.
//
interval = 0;
}
else if (cnt > _retryIntervals.Length)
{
if (traceLevels.retry >= 1)
{
string s = "cannot retry operation call because retry limit has been exceeded\n" + ex;
logger.trace(traceLevels.retryCat, s);
}
throw ex;
}
else
{
interval = _retryIntervals[cnt - 1];
}
if (traceLevels.retry >= 1)
{
string s = "retrying operation call";
if (interval > 0)
{
s += " in " + interval + "ms";
}
s += " because of exception\n" + ex;
logger.trace(traceLevels.retryCat, s);
}
return(interval);
}
