◆ ReceiveFrom() [1/6]

int System.Net.Sockets.Socket.ReceiveFrom	(	byte[]	buffer,
		int	offset,
		int	size,
		SocketFlags	socketFlags,
		ref EndPoint	remoteEP )
inline
Definition at line 1983 of file Socket.cs.
    {
        ThrowIfDisposed();
        ValidateBufferArguments(buffer, offset, size);
        ValidateReceiveFromEndpointAndState(remoteEP, "remoteEP");
        SocketPal.CheckDualModeReceiveSupport(this);
        ValidateBlockingMode();
        if (System.Net.NetEventSource.Log.IsEnabled())
        {
            System.Net.NetEventSource.Info(this, $"SRC{LocalEndPoint} size:{size} remoteEP:{remoteEP}", "ReceiveFrom");
        }
        EndPoint remoteEP2 = remoteEP;
        System.Net.Internals.SocketAddress socketAddress = Serialize(ref remoteEP2);
        System.Net.Internals.SocketAddress socketAddress2 = IPEndPointExtensions.Serialize(remoteEP2);
        int bytesTransferred;
        SocketError socketError = SocketPal.ReceiveFrom(_handle, buffer, offset, size, socketFlags, socketAddress.Buffer, ref socketAddress.InternalSize, out bytesTransferred);
        UpdateReceiveSocketErrorForDisposed(ref socketError, bytesTransferred);
        SocketException ex = null;
        if (socketError != 0)
        {
            ex = new SocketException((int)socketError);
            UpdateStatusAfterSocketError(ex);
            if (System.Net.NetEventSource.Log.IsEnabled())
            {
                System.Net.NetEventSource.Error(this, ex, "ReceiveFrom");
            }
            if (ex.SocketErrorCode != SocketError.MessageSize)
            {
                throw ex;
            }
        }
        else if (SocketsTelemetry.Log.IsEnabled())
        {
            SocketsTelemetry.Log.BytesReceived(bytesTransferred);
            if (SocketType == SocketType.Dgram)
            {
                SocketsTelemetry.Log.DatagramReceived();
            }
        }
        if (!socketAddress2.Equals(socketAddress))
        {
            try
            {
                remoteEP = remoteEP2.Create(socketAddress);
            }
            catch
            {
            }
            if (_rightEndPoint == null)
            {
                _rightEndPoint = remoteEP2;
            }
        }
        if (ex != null)
        {
            throw ex;
        }
        if (System.Net.NetEventSource.Log.IsEnabled())
        {
            System.Net.NetEventSource.DumpBuffer(this, buffer, offset, size, "ReceiveFrom");
        }
        return bytesTransferred;
    }