public virtual void Receive(ref Msg msg, SendReceiveOptions options)
{
// This legacy method adapts the newer nothrow API to the older AgainException one.
if ((options & SendReceiveOptions.DontWait) != 0)
{
// User specified DontWait, so use a zero timeout.
if (!m_socketHandle.TryRecv(ref msg, TimeSpan.Zero))
{
throw new AgainException();
}
}
else
{
// User is expecting to wait, however we must still consider the socket's (obsolete) ReceiveTimeout.
if (!m_socketHandle.TryRecv(ref msg, Options.ReceiveTimeout))
{
throw new AgainException();
}
}
}
public static MonitorEvent Read(SocketBase s)
{
var msg = new Msg();
msg.InitEmpty();
s.TryRecv(ref msg, SendReceiveConstants.InfiniteTimeout);
int pos = msg.UnsafeOffset;
Assumes.NotNull(msg.UnsafeData);
ByteArraySegment data = msg.UnsafeData;
var @event = (SocketEvents)data.GetInteger(Endianness.Little, pos);
pos += 4;
var len = (int)data[pos++];
string addr = data.GetString(len, pos);
pos += len;
var flag = (int)data[pos++];
object?arg = null;
if (flag == ValueInteger)
{
arg = data.GetInteger(Endianness.Little, pos);
}
else if (flag == ValueChannel)
{
IntPtr value = s_sizeOfIntPtr == 4
? new IntPtr(data.GetInteger(Endianness.Little, pos))
: new IntPtr(data.GetLong(Endianness.Little, pos));
GCHandle handle = GCHandle.FromIntPtr(value);
AsyncSocket?socket = null;
if (handle.IsAllocated)
{
socket = handle.Target as AsyncSocket;
}
handle.Free();
arg = socket;
}
return(new MonitorEvent(@event, addr, arg));
}
/// <summary>Attempt to receive a message for the specified amount of time.</summary>
/// <param name="msg">A reference to a <see cref="Msg"/> instance into which the received message
/// data should be placed.</param>
/// <param name="timeout">The maximum amount of time the call should wait for a message before returning.</param>
/// <param name="cancellationToken">The token to monitor for cancellation requests. The default value is <see cref="CancellationToken.None"/>.</param>
/// <returns><c>true</c> if a message was received before <paramref name="timeout"/> elapsed,
/// otherwise <c>false</c>.</returns>
public virtual bool TryReceive(ref Msg msg, TimeSpan timeout, CancellationToken cancellationToken = default)
{
return(m_socketHandle.TryRecv(ref msg, timeout, cancellationToken));
}
public virtual bool TryReceive(ref Msg msg, TimeSpan timeout)
{
return(m_socketHandle.TryRecv(ref msg, timeout));
}