2856 lines
86 KiB
C#
2856 lines
86 KiB
C#
// System.Net.Sockets.Socket.cs
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//
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// Authors:
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// Phillip Pearson (pp@myelin.co.nz)
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// Dick Porter <dick@ximian.com>
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// Gonzalo Paniagua Javier (gonzalo@ximian.com)
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// Sridhar Kulkarni (sridharkulkarni@gmail.com)
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// Brian Nickel (brian.nickel@gmail.com)
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// Ludovic Henry (ludovic@xamarin.com)
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//
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// Copyright (C) 2001, 2002 Phillip Pearson and Ximian, Inc.
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// http://www.myelin.co.nz
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// (c) 2004-2011 Novell, Inc. (http://www.novell.com)
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//
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.Net;
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using System.Collections;
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using System.Collections.Generic;
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using System.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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using System.Threading;
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using System.Reflection;
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using System.IO;
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using System.Net.Configuration;
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using System.Text;
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using System.Timers;
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using System.Net.NetworkInformation;
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namespace System.Net.Sockets
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{
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public partial class Socket : IDisposable
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{
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const int SOCKET_CLOSED_CODE = 10004;
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const string TIMEOUT_EXCEPTION_MSG = "A connection attempt failed because the connected party did not properly respond" +
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"after a period of time, or established connection failed because connected host has failed to respond";
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/* true if we called Close_internal */
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bool is_closed;
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bool is_listening;
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bool useOverlappedIO;
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int linger_timeout;
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AddressFamily addressFamily;
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SocketType socketType;
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ProtocolType protocolType;
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/* the field "m_Handle" is looked up by name by the runtime */
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internal SafeSocketHandle m_Handle;
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/*
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* This EndPoint is used when creating new endpoints. Because
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* there are many types of EndPoints possible,
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* seed_endpoint.Create(addr) is used for creating new ones.
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* As such, this value is set on Bind, SentTo, ReceiveFrom,
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* Connect, etc.
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*/
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internal EndPoint seed_endpoint = null;
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internal SemaphoreSlim ReadSem = new SemaphoreSlim (1, 1);
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internal SemaphoreSlim WriteSem = new SemaphoreSlim (1, 1);
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internal bool is_blocking = true;
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internal bool is_bound;
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/* When true, the socket was connected at the time of the last IO operation */
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internal bool is_connected;
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int m_IntCleanedUp;
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internal bool connect_in_progress;
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#if MONO_WEB_DEBUG
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static int nextId;
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internal readonly int ID = ++nextId;
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#else
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internal readonly int ID;
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#endif
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#region Constructors
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public Socket (SocketInformation socketInformation)
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{
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this.is_listening = (socketInformation.Options & SocketInformationOptions.Listening) != 0;
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this.is_connected = (socketInformation.Options & SocketInformationOptions.Connected) != 0;
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this.is_blocking = (socketInformation.Options & SocketInformationOptions.NonBlocking) == 0;
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this.useOverlappedIO = (socketInformation.Options & SocketInformationOptions.UseOnlyOverlappedIO) != 0;
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var result = Mono.DataConverter.Unpack ("iiiil", socketInformation.ProtocolInformation, 0);
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this.addressFamily = (AddressFamily) (int) result [0];
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this.socketType = (SocketType) (int) result [1];
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this.protocolType = (ProtocolType) (int) result [2];
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this.is_bound = (ProtocolType) (int) result [3] != 0;
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this.m_Handle = new SafeSocketHandle ((IntPtr) (long) result [4], true);
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InitializeSockets ();
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SocketDefaults ();
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}
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/* private constructor used by Accept, which already has a socket handle to use */
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internal Socket(AddressFamily family, SocketType type, ProtocolType proto, SafeSocketHandle safe_handle)
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{
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this.addressFamily = family;
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this.socketType = type;
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this.protocolType = proto;
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this.m_Handle = safe_handle;
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this.is_connected = true;
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InitializeSockets ();
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}
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void SocketDefaults ()
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{
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try {
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/* Need to test IPv6 further */
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if (addressFamily == AddressFamily.InterNetwork
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// || addressFamily == AddressFamily.InterNetworkV6
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) {
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/* This is the default, but it probably has nasty side
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* effects on Linux, as the socket option is kludged by
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* turning on or off PMTU discovery... */
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this.DontFragment = false;
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if (protocolType == ProtocolType.Tcp)
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this.NoDelay = false;
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} else if (addressFamily == AddressFamily.InterNetworkV6) {
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this.DualMode = true;
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}
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/* Microsoft sets these to 8192, but we are going to keep them
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* both to the OS defaults as these have a big performance impact.
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* on WebClient performance. */
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// this.ReceiveBufferSize = 8192;
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// this.SendBufferSize = 8192;
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} catch (SocketException) {
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}
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}
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/* Creates a new system socket, returning the handle */
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[MethodImplAttribute(MethodImplOptions.InternalCall)]
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extern IntPtr Socket_internal (AddressFamily family, SocketType type, ProtocolType proto, out int error);
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#endregion
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#region Properties
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public int Available {
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get {
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ThrowIfDisposedAndClosed ();
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int ret, error;
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ret = Available_internal (m_Handle, out error);
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if (error != 0)
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throw new SocketException (error);
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return ret;
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}
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}
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static int Available_internal (SafeSocketHandle safeHandle, out int error)
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{
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bool release = false;
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try {
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safeHandle.DangerousAddRef (ref release);
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return Available_internal (safeHandle.DangerousGetHandle (), out error);
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} finally {
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if (release)
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safeHandle.DangerousRelease ();
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}
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}
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/* Returns the amount of data waiting to be read on socket */
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[MethodImplAttribute(MethodImplOptions.InternalCall)]
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extern static int Available_internal (IntPtr socket, out int error);
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// FIXME: import from referencesource
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public bool EnableBroadcast {
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get {
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ThrowIfDisposedAndClosed ();
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if (protocolType != ProtocolType.Udp)
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throw new SocketException ((int) SocketError.ProtocolOption);
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return ((int) GetSocketOption (SocketOptionLevel.Socket, SocketOptionName.Broadcast)) != 0;
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}
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set {
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ThrowIfDisposedAndClosed ();
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if (protocolType != ProtocolType.Udp)
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throw new SocketException ((int) SocketError.ProtocolOption);
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SetSocketOption (SocketOptionLevel.Socket, SocketOptionName.Broadcast, value ? 1 : 0);
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}
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}
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public bool IsBound {
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get {
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return is_bound;
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}
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}
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// FIXME: import from referencesource
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public bool MulticastLoopback {
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get {
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ThrowIfDisposedAndClosed ();
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/* Even though this option can be set for TCP sockets on Linux, throw
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* this exception anyway to be compatible (the MSDN docs say
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* "Setting this property on a Transmission Control Protocol (TCP)
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* socket will have no effect." but the MS runtime throws the
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* exception...) */
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if (protocolType == ProtocolType.Tcp)
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throw new SocketException ((int)SocketError.ProtocolOption);
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switch (addressFamily) {
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case AddressFamily.InterNetwork:
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return ((int) GetSocketOption (SocketOptionLevel.IP, SocketOptionName.MulticastLoopback)) != 0;
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case AddressFamily.InterNetworkV6:
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return ((int) GetSocketOption (SocketOptionLevel.IPv6, SocketOptionName.MulticastLoopback)) != 0;
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default:
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throw new NotSupportedException ("This property is only valid for InterNetwork and InterNetworkV6 sockets");
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}
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}
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set {
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ThrowIfDisposedAndClosed ();
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/* Even though this option can be set for TCP sockets on Linux, throw
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* this exception anyway to be compatible (the MSDN docs say
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* "Setting this property on a Transmission Control Protocol (TCP)
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* socket will have no effect." but the MS runtime throws the
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* exception...) */
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if (protocolType == ProtocolType.Tcp)
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throw new SocketException ((int)SocketError.ProtocolOption);
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switch (addressFamily) {
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case AddressFamily.InterNetwork:
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SetSocketOption (SocketOptionLevel.IP, SocketOptionName.MulticastLoopback, value ? 1 : 0);
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break;
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case AddressFamily.InterNetworkV6:
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SetSocketOption (SocketOptionLevel.IPv6, SocketOptionName.MulticastLoopback, value ? 1 : 0);
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break;
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default:
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throw new NotSupportedException ("This property is only valid for InterNetwork and InterNetworkV6 sockets");
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}
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}
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}
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// Wish: support non-IP endpoints.
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public EndPoint LocalEndPoint {
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get {
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ThrowIfDisposedAndClosed ();
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/* If the seed EndPoint is null, Connect, Bind, etc has not yet
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* been called. MS returns null in this case. */
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if (seed_endpoint == null)
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return null;
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int error;
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SocketAddress sa = LocalEndPoint_internal (m_Handle, (int) addressFamily, out error);
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if (error != 0)
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throw new SocketException (error);
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return seed_endpoint.Create (sa);
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}
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}
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static SocketAddress LocalEndPoint_internal (SafeSocketHandle safeHandle, int family, out int error)
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{
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bool release = false;
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try {
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safeHandle.DangerousAddRef (ref release);
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return LocalEndPoint_internal (safeHandle.DangerousGetHandle (), family, out error);
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} finally {
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if (release)
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safeHandle.DangerousRelease ();
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}
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}
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/* Returns the local endpoint details in addr and port */
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[MethodImplAttribute(MethodImplOptions.InternalCall)]
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extern static SocketAddress LocalEndPoint_internal (IntPtr socket, int family, out int error);
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public bool Blocking {
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get { return is_blocking; }
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set {
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ThrowIfDisposedAndClosed ();
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int error;
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Blocking_internal (m_Handle, value, out error);
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if (error != 0)
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throw new SocketException (error);
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is_blocking = value;
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}
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}
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static void Blocking_internal (SafeSocketHandle safeHandle, bool block, out int error)
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{
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bool release = false;
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try {
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safeHandle.DangerousAddRef (ref release);
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Blocking_internal (safeHandle.DangerousGetHandle (), block, out error);
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} finally {
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if (release)
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safeHandle.DangerousRelease ();
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}
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}
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[MethodImplAttribute(MethodImplOptions.InternalCall)]
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internal extern static void Blocking_internal(IntPtr socket, bool block, out int error);
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public bool Connected {
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get { return is_connected; }
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internal set { is_connected = value; }
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}
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// FIXME: import from referencesource
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public bool NoDelay {
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get {
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ThrowIfDisposedAndClosed ();
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ThrowIfUdp ();
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return ((int) GetSocketOption (SocketOptionLevel.Tcp, SocketOptionName.NoDelay)) != 0;
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}
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set {
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ThrowIfDisposedAndClosed ();
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ThrowIfUdp ();
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SetSocketOption (SocketOptionLevel.Tcp, SocketOptionName.NoDelay, value ? 1 : 0);
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}
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}
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public EndPoint RemoteEndPoint {
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get {
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ThrowIfDisposedAndClosed ();
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/* If the seed EndPoint is null, Connect, Bind, etc has
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* not yet been called. MS returns null in this case. */
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if (!is_connected || seed_endpoint == null)
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return null;
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int error;
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SocketAddress sa = RemoteEndPoint_internal (m_Handle, (int) addressFamily, out error);
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if (error != 0)
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throw new SocketException (error);
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return seed_endpoint.Create (sa);
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}
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}
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static SocketAddress RemoteEndPoint_internal (SafeSocketHandle safeHandle, int family, out int error)
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{
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bool release = false;
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try {
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safeHandle.DangerousAddRef (ref release);
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return RemoteEndPoint_internal (safeHandle.DangerousGetHandle (), family, out error);
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} finally {
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if (release)
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safeHandle.DangerousRelease ();
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}
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}
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/* Returns the remote endpoint details in addr and port */
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[MethodImplAttribute(MethodImplOptions.InternalCall)]
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extern static SocketAddress RemoteEndPoint_internal (IntPtr socket, int family, out int error);
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internal SafeHandle SafeHandle
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{
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get { return m_Handle; }
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}
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#endregion
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#region Select
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public static void Select (IList checkRead, IList checkWrite, IList checkError, int microSeconds)
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{
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var list = new List<Socket> ();
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AddSockets (list, checkRead, "checkRead");
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AddSockets (list, checkWrite, "checkWrite");
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AddSockets (list, checkError, "checkError");
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if (list.Count == 3)
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throw new ArgumentNullException ("checkRead, checkWrite, checkError", "All the lists are null or empty.");
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/* The 'sockets' array contains:
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* - READ socket 0-n, null,
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* - WRITE socket 0-n, null,
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* - ERROR socket 0-n, null */
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Socket [] sockets = list.ToArray ();
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int error;
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Select_internal (ref sockets, microSeconds, out error);
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if (error != 0)
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throw new SocketException (error);
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if (sockets == null) {
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if (checkRead != null)
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checkRead.Clear ();
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if (checkWrite != null)
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checkWrite.Clear ();
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if (checkError != null)
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checkError.Clear ();
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return;
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}
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int mode = 0;
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int count = sockets.Length;
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IList currentList = checkRead;
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int currentIdx = 0;
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for (int i = 0; i < count; i++) {
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Socket sock = sockets [i];
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if (sock == null) { // separator
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if (currentList != null) {
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// Remove non-signaled sockets after the current one
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int to_remove = currentList.Count - currentIdx;
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for (int k = 0; k < to_remove; k++)
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currentList.RemoveAt (currentIdx);
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}
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currentList = (mode == 0) ? checkWrite : checkError;
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currentIdx = 0;
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mode++;
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continue;
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}
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if (mode == 1 && currentList == checkWrite && !sock.is_connected) {
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if ((int) sock.GetSocketOption (SocketOptionLevel.Socket, SocketOptionName.Error) == 0)
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sock.is_connected = true;
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}
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/* Remove non-signaled sockets before the current one */
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while (((Socket) currentList [currentIdx]) != sock)
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currentList.RemoveAt (currentIdx);
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currentIdx++;
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}
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}
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static void AddSockets (List<Socket> sockets, IList list, string name)
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{
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if (list != null) {
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foreach (Socket sock in list) {
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if (sock == null) // MS throws a NullRef
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throw new ArgumentNullException (name, "Contains a null element");
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sockets.Add (sock);
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}
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}
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sockets.Add (null);
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}
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[MethodImplAttribute(MethodImplOptions.InternalCall)]
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extern static void Select_internal (ref Socket [] sockets, int microSeconds, out int error);
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#endregion
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#region Poll
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public bool Poll (int microSeconds, SelectMode mode)
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{
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ThrowIfDisposedAndClosed ();
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if (mode != SelectMode.SelectRead && mode != SelectMode.SelectWrite && mode != SelectMode.SelectError)
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throw new NotSupportedException ("'mode' parameter is not valid.");
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int error;
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bool result = Poll_internal (m_Handle, mode, microSeconds, out error);
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if (error != 0)
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throw new SocketException (error);
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if (mode == SelectMode.SelectWrite && result && !is_connected) {
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/* Update the is_connected state; for non-blocking Connect()
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* this is when we can find out that the connect succeeded. */
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if ((int) GetSocketOption (SocketOptionLevel.Socket, SocketOptionName.Error) == 0)
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is_connected = true;
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}
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return result;
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}
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static bool Poll_internal (SafeSocketHandle safeHandle, SelectMode mode, int timeout, out int error)
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{
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bool release = false;
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try {
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safeHandle.DangerousAddRef (ref release);
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return Poll_internal (safeHandle.DangerousGetHandle (), mode, timeout, out error);
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} finally {
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if (release)
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safeHandle.DangerousRelease ();
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}
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}
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|
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[MethodImplAttribute(MethodImplOptions.InternalCall)]
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extern static bool Poll_internal (IntPtr socket, SelectMode mode, int timeout, out int error);
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#endregion
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|
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#region Accept
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|
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public Socket Accept()
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{
|
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ThrowIfDisposedAndClosed ();
|
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|
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int error = 0;
|
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SafeSocketHandle safe_handle = Accept_internal (this.m_Handle, out error, is_blocking);
|
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|
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if (error != 0) {
|
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if (is_closed)
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error = SOCKET_CLOSED_CODE;
|
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throw new SocketException(error);
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}
|
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|
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Socket accepted = new Socket (this.AddressFamily, this.SocketType, this.ProtocolType, safe_handle) {
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seed_endpoint = this.seed_endpoint,
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Blocking = this.Blocking,
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};
|
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|
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return accepted;
|
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}
|
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|
|
internal void Accept (Socket acceptSocket)
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{
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
int error = 0;
|
|
SafeSocketHandle safe_handle = Accept_internal (this.m_Handle, out error, is_blocking);
|
|
|
|
if (error != 0) {
|
|
if (is_closed)
|
|
error = SOCKET_CLOSED_CODE;
|
|
throw new SocketException (error);
|
|
}
|
|
|
|
acceptSocket.addressFamily = this.AddressFamily;
|
|
acceptSocket.socketType = this.SocketType;
|
|
acceptSocket.protocolType = this.ProtocolType;
|
|
acceptSocket.m_Handle = safe_handle;
|
|
acceptSocket.is_connected = true;
|
|
acceptSocket.seed_endpoint = this.seed_endpoint;
|
|
acceptSocket.Blocking = this.Blocking;
|
|
|
|
// FIXME: figure out what if anything else needs to be reset
|
|
}
|
|
|
|
public bool AcceptAsync (SocketAsyncEventArgs e)
|
|
{
|
|
// NO check is made whether e != null in MS.NET (NRE is thrown in such case)
|
|
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
if (!is_bound)
|
|
throw new InvalidOperationException ("You must call the Bind method before performing this operation.");
|
|
if (!is_listening)
|
|
throw new InvalidOperationException ("You must call the Listen method before performing this operation.");
|
|
if (e.BufferList != null)
|
|
throw new ArgumentException ("Multiple buffers cannot be used with this method.");
|
|
if (e.Count < 0)
|
|
throw new ArgumentOutOfRangeException ("e.Count");
|
|
|
|
Socket acceptSocket = e.AcceptSocket;
|
|
if (acceptSocket != null) {
|
|
if (acceptSocket.is_bound || acceptSocket.is_connected)
|
|
throw new InvalidOperationException ("AcceptSocket: The socket must not be bound or connected.");
|
|
}
|
|
|
|
InitSocketAsyncEventArgs (e, AcceptAsyncCallback, e, SocketOperation.Accept);
|
|
|
|
QueueIOSelectorJob (ReadSem, e.socket_async_result.Handle, new IOSelectorJob (IOOperation.Read, BeginAcceptCallback, e.socket_async_result));
|
|
|
|
return true;
|
|
}
|
|
|
|
static AsyncCallback AcceptAsyncCallback = new AsyncCallback (ares => {
|
|
SocketAsyncEventArgs e = (SocketAsyncEventArgs) ((SocketAsyncResult) ares).AsyncState;
|
|
|
|
if (Interlocked.Exchange (ref e.in_progress, 0) != 1)
|
|
throw new InvalidOperationException ("No operation in progress");
|
|
|
|
try {
|
|
e.AcceptSocket = e.current_socket.EndAccept (ares);
|
|
} catch (SocketException ex) {
|
|
e.SocketError = ex.SocketErrorCode;
|
|
} catch (ObjectDisposedException) {
|
|
e.SocketError = SocketError.OperationAborted;
|
|
} finally {
|
|
if (e.AcceptSocket == null)
|
|
e.AcceptSocket = new Socket (e.current_socket.AddressFamily, e.current_socket.SocketType, e.current_socket.ProtocolType, null);
|
|
e.Complete ();
|
|
}
|
|
});
|
|
|
|
public IAsyncResult BeginAccept(AsyncCallback callback, object state)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
if (!is_bound || !is_listening)
|
|
throw new InvalidOperationException ();
|
|
|
|
SocketAsyncResult sockares = new SocketAsyncResult (this, callback, state, SocketOperation.Accept);
|
|
|
|
QueueIOSelectorJob (ReadSem, sockares.Handle, new IOSelectorJob (IOOperation.Read, BeginAcceptCallback, sockares));
|
|
|
|
return sockares;
|
|
}
|
|
|
|
static IOAsyncCallback BeginAcceptCallback = new IOAsyncCallback (ares => {
|
|
SocketAsyncResult sockares = (SocketAsyncResult) ares;
|
|
Socket acc_socket = null;
|
|
try {
|
|
if (sockares.AcceptSocket == null) {
|
|
acc_socket = sockares.socket.Accept ();
|
|
} else {
|
|
acc_socket = sockares.AcceptSocket;
|
|
sockares.socket.Accept (acc_socket);
|
|
}
|
|
|
|
} catch (Exception e) {
|
|
sockares.Complete (e);
|
|
return;
|
|
}
|
|
sockares.Complete (acc_socket);
|
|
});
|
|
|
|
public IAsyncResult BeginAccept (Socket acceptSocket, int receiveSize, AsyncCallback callback, object state)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
if (receiveSize < 0)
|
|
throw new ArgumentOutOfRangeException ("receiveSize", "receiveSize is less than zero");
|
|
|
|
if (acceptSocket != null) {
|
|
ThrowIfDisposedAndClosed (acceptSocket);
|
|
|
|
if (acceptSocket.IsBound)
|
|
throw new InvalidOperationException ();
|
|
|
|
/* For some reason the MS runtime
|
|
* barfs if the new socket is not TCP,
|
|
* even though it's just about to blow
|
|
* away all those parameters
|
|
*/
|
|
if (acceptSocket.ProtocolType != ProtocolType.Tcp)
|
|
throw new SocketException ((int)SocketError.InvalidArgument);
|
|
}
|
|
|
|
SocketAsyncResult sockares = new SocketAsyncResult (this, callback, state, SocketOperation.AcceptReceive) {
|
|
Buffer = new byte [receiveSize],
|
|
Offset = 0,
|
|
Size = receiveSize,
|
|
SockFlags = SocketFlags.None,
|
|
AcceptSocket = acceptSocket,
|
|
};
|
|
|
|
QueueIOSelectorJob (ReadSem, sockares.Handle, new IOSelectorJob (IOOperation.Read, BeginAcceptReceiveCallback, sockares));
|
|
|
|
return sockares;
|
|
}
|
|
|
|
static IOAsyncCallback BeginAcceptReceiveCallback = new IOAsyncCallback (ares => {
|
|
SocketAsyncResult sockares = (SocketAsyncResult) ares;
|
|
Socket acc_socket = null;
|
|
|
|
try {
|
|
if (sockares.AcceptSocket == null) {
|
|
acc_socket = sockares.socket.Accept ();
|
|
} else {
|
|
acc_socket = sockares.AcceptSocket;
|
|
sockares.socket.Accept (acc_socket);
|
|
}
|
|
} catch (Exception e) {
|
|
sockares.Complete (e);
|
|
return;
|
|
}
|
|
|
|
/* It seems the MS runtime special-cases 0-length requested receive data. See bug 464201. */
|
|
int total = 0;
|
|
if (sockares.Size > 0) {
|
|
try {
|
|
SocketError error;
|
|
total = acc_socket.Receive (sockares.Buffer, sockares.Offset, sockares.Size, sockares.SockFlags, out error);
|
|
if (error != 0) {
|
|
sockares.Complete (new SocketException ((int) error));
|
|
return;
|
|
}
|
|
} catch (Exception e) {
|
|
sockares.Complete (e);
|
|
return;
|
|
}
|
|
}
|
|
|
|
sockares.Complete (acc_socket, total);
|
|
});
|
|
|
|
public Socket EndAccept (IAsyncResult asyncResult)
|
|
{
|
|
int bytes;
|
|
byte[] buffer;
|
|
return EndAccept (out buffer, out bytes, asyncResult);
|
|
}
|
|
|
|
public Socket EndAccept (out byte[] buffer, out int bytesTransferred, IAsyncResult asyncResult)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
SocketAsyncResult sockares = ValidateEndIAsyncResult (asyncResult, "EndAccept", "asyncResult");
|
|
|
|
if (!sockares.IsCompleted)
|
|
sockares.AsyncWaitHandle.WaitOne ();
|
|
|
|
sockares.CheckIfThrowDelayedException ();
|
|
|
|
buffer = sockares.Buffer;
|
|
bytesTransferred = sockares.Total;
|
|
|
|
return sockares.AcceptedSocket;
|
|
}
|
|
|
|
static SafeSocketHandle Accept_internal (SafeSocketHandle safeHandle, out int error, bool blocking)
|
|
{
|
|
try {
|
|
safeHandle.RegisterForBlockingSyscall ();
|
|
var ret = Accept_internal (safeHandle.DangerousGetHandle (), out error, blocking);
|
|
return new SafeSocketHandle (ret, true);
|
|
} finally {
|
|
safeHandle.UnRegisterForBlockingSyscall ();
|
|
}
|
|
}
|
|
|
|
/* Creates a new system socket, returning the handle */
|
|
[MethodImplAttribute(MethodImplOptions.InternalCall)]
|
|
extern static IntPtr Accept_internal (IntPtr sock, out int error, bool blocking);
|
|
|
|
#endregion
|
|
|
|
#region Bind
|
|
|
|
public void Bind (EndPoint localEP)
|
|
{
|
|
#if FEATURE_NO_BSD_SOCKETS
|
|
throw new PlatformNotSupportedException ("System.Net.Sockets.Socket:Bind is not supported on this platform.");
|
|
#else
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
if (localEP == null)
|
|
throw new ArgumentNullException("localEP");
|
|
|
|
var ipEndPoint = localEP as IPEndPoint;
|
|
if (ipEndPoint != null) {
|
|
localEP = RemapIPEndPoint (ipEndPoint);
|
|
}
|
|
|
|
int error;
|
|
Bind_internal (m_Handle, localEP.Serialize(), out error);
|
|
|
|
if (error != 0)
|
|
throw new SocketException (error);
|
|
if (error == 0)
|
|
is_bound = true;
|
|
|
|
seed_endpoint = localEP;
|
|
#endif // FEATURE_NO_BSD_SOCKETS
|
|
}
|
|
|
|
private static void Bind_internal (SafeSocketHandle safeHandle, SocketAddress sa, out int error)
|
|
{
|
|
bool release = false;
|
|
try {
|
|
safeHandle.DangerousAddRef (ref release);
|
|
Bind_internal (safeHandle.DangerousGetHandle (), sa, out error);
|
|
} finally {
|
|
if (release)
|
|
safeHandle.DangerousRelease ();
|
|
}
|
|
}
|
|
|
|
// Creates a new system socket, returning the handle
|
|
[MethodImplAttribute(MethodImplOptions.InternalCall)]
|
|
private extern static void Bind_internal(IntPtr sock, SocketAddress sa, out int error);
|
|
|
|
#endregion
|
|
|
|
#region Listen
|
|
|
|
public void Listen (int backlog)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
if (!is_bound)
|
|
throw new SocketException ((int) SocketError.InvalidArgument);
|
|
|
|
int error;
|
|
Listen_internal(m_Handle, backlog, out error);
|
|
|
|
if (error != 0)
|
|
throw new SocketException (error);
|
|
|
|
is_listening = true;
|
|
}
|
|
|
|
static void Listen_internal (SafeSocketHandle safeHandle, int backlog, out int error)
|
|
{
|
|
bool release = false;
|
|
try {
|
|
safeHandle.DangerousAddRef (ref release);
|
|
Listen_internal (safeHandle.DangerousGetHandle (), backlog, out error);
|
|
} finally {
|
|
if (release)
|
|
safeHandle.DangerousRelease ();
|
|
}
|
|
}
|
|
|
|
[MethodImplAttribute(MethodImplOptions.InternalCall)]
|
|
extern static void Listen_internal (IntPtr sock, int backlog, out int error);
|
|
|
|
#endregion
|
|
|
|
#region Connect
|
|
|
|
public void Connect (IPAddress address, int port)
|
|
{
|
|
Connect (new IPEndPoint (address, port));
|
|
}
|
|
|
|
public void Connect (string host, int port)
|
|
{
|
|
Connect (Dns.GetHostAddresses (host), port);
|
|
}
|
|
|
|
public void Connect (EndPoint remoteEP)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
if (remoteEP == null)
|
|
throw new ArgumentNullException ("remoteEP");
|
|
|
|
IPEndPoint ep = remoteEP as IPEndPoint;
|
|
/* Dgram uses Any to 'disconnect' */
|
|
if (ep != null && socketType != SocketType.Dgram) {
|
|
if (ep.Address.Equals (IPAddress.Any) || ep.Address.Equals (IPAddress.IPv6Any))
|
|
throw new SocketException ((int) SocketError.AddressNotAvailable);
|
|
}
|
|
|
|
if (is_listening)
|
|
throw new InvalidOperationException ();
|
|
|
|
if (ep != null) {
|
|
remoteEP = RemapIPEndPoint (ep);
|
|
}
|
|
|
|
SocketAddress serial = remoteEP.Serialize ();
|
|
|
|
int error = 0;
|
|
Connect_internal (m_Handle, serial, out error, is_blocking);
|
|
|
|
if (error == 0 || error == 10035)
|
|
seed_endpoint = remoteEP; // Keep the ep around for non-blocking sockets
|
|
|
|
if (error != 0) {
|
|
if (is_closed)
|
|
error = SOCKET_CLOSED_CODE;
|
|
throw new SocketException (error);
|
|
}
|
|
|
|
is_connected = !(socketType == SocketType.Dgram && ep != null && (ep.Address.Equals (IPAddress.Any) || ep.Address.Equals (IPAddress.IPv6Any)));
|
|
is_bound = true;
|
|
}
|
|
|
|
public bool ConnectAsync (SocketAsyncEventArgs e)
|
|
{
|
|
// NO check is made whether e != null in MS.NET (NRE is thrown in such case)
|
|
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
if (is_listening)
|
|
throw new InvalidOperationException ("You may not perform this operation after calling the Listen method.");
|
|
if (e.RemoteEndPoint == null)
|
|
throw new ArgumentNullException ("remoteEP");
|
|
|
|
InitSocketAsyncEventArgs (e, null, e, SocketOperation.Connect);
|
|
|
|
try {
|
|
IPAddress [] addresses;
|
|
SocketAsyncResult ares;
|
|
|
|
if (!GetCheckedIPs (e, out addresses)) {
|
|
//NOTE: DualMode may cause Socket's RemoteEndpoint to differ in AddressFamily from the
|
|
// SocketAsyncEventArgs, but the SocketAsyncEventArgs itself is not changed
|
|
ares = (SocketAsyncResult) BeginConnect (e.RemoteEndPoint, ConnectAsyncCallback, e);
|
|
} else {
|
|
DnsEndPoint dep = (DnsEndPoint)e.RemoteEndPoint;
|
|
ares = (SocketAsyncResult) BeginConnect (addresses, dep.Port, ConnectAsyncCallback, e);
|
|
}
|
|
|
|
if (ares.IsCompleted && ares.CompletedSynchronously) {
|
|
ares.CheckIfThrowDelayedException ();
|
|
return false;
|
|
}
|
|
} catch (Exception exc) {
|
|
e.socket_async_result.Complete (exc, true);
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
public static void CancelConnectAsync (SocketAsyncEventArgs e)
|
|
{
|
|
if (e == null)
|
|
throw new ArgumentNullException("e");
|
|
|
|
if (e.in_progress != 0 && e.LastOperation == SocketAsyncOperation.Connect)
|
|
e.current_socket.Close();
|
|
}
|
|
|
|
static AsyncCallback ConnectAsyncCallback = new AsyncCallback (ares => {
|
|
SocketAsyncEventArgs e = (SocketAsyncEventArgs) ((SocketAsyncResult) ares).AsyncState;
|
|
|
|
if (Interlocked.Exchange (ref e.in_progress, 0) != 1)
|
|
throw new InvalidOperationException ("No operation in progress");
|
|
|
|
try {
|
|
e.current_socket.EndConnect (ares);
|
|
} catch (SocketException se) {
|
|
e.SocketError = se.SocketErrorCode;
|
|
} catch (ObjectDisposedException) {
|
|
e.SocketError = SocketError.OperationAborted;
|
|
} finally {
|
|
e.Complete ();
|
|
}
|
|
});
|
|
|
|
public IAsyncResult BeginConnect (string host, int port, AsyncCallback requestCallback, object state)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
if (host == null)
|
|
throw new ArgumentNullException ("host");
|
|
if (addressFamily != AddressFamily.InterNetwork && addressFamily != AddressFamily.InterNetworkV6)
|
|
throw new NotSupportedException ("This method is valid only for sockets in the InterNetwork and InterNetworkV6 families");
|
|
if (port <= 0 || port > 65535)
|
|
throw new ArgumentOutOfRangeException ("port", "Must be > 0 and < 65536");
|
|
if (is_listening)
|
|
throw new InvalidOperationException ();
|
|
|
|
return BeginConnect (Dns.GetHostAddresses (host), port, requestCallback, state);
|
|
}
|
|
|
|
public IAsyncResult BeginConnect (EndPoint remoteEP, AsyncCallback callback, object state)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
if (remoteEP == null)
|
|
throw new ArgumentNullException ("remoteEP");
|
|
if (is_listening)
|
|
throw new InvalidOperationException ();
|
|
|
|
SocketAsyncResult sockares = new SocketAsyncResult (this, callback, state, SocketOperation.Connect) {
|
|
EndPoint = remoteEP,
|
|
};
|
|
|
|
BeginSConnect (sockares);
|
|
return sockares;
|
|
}
|
|
|
|
public IAsyncResult BeginConnect (IPAddress[] addresses, int port, AsyncCallback requestCallback, object state)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
if (addresses == null)
|
|
throw new ArgumentNullException ("addresses");
|
|
if (addresses.Length == 0)
|
|
throw new ArgumentException ("Empty addresses list");
|
|
if (this.AddressFamily != AddressFamily.InterNetwork && this.AddressFamily != AddressFamily.InterNetworkV6)
|
|
throw new NotSupportedException ("This method is only valid for addresses in the InterNetwork or InterNetworkV6 families");
|
|
if (port <= 0 || port > 65535)
|
|
throw new ArgumentOutOfRangeException ("port", "Must be > 0 and < 65536");
|
|
if (is_listening)
|
|
throw new InvalidOperationException ();
|
|
|
|
SocketAsyncResult sockares = new SocketAsyncResult (this, requestCallback, state, SocketOperation.Connect) {
|
|
Addresses = addresses,
|
|
Port = port,
|
|
};
|
|
|
|
is_connected = false;
|
|
|
|
BeginMConnect (sockares);
|
|
return sockares;
|
|
}
|
|
|
|
static void BeginMConnect (SocketAsyncResult sockares)
|
|
{
|
|
Exception exc = null;
|
|
|
|
for (int i = sockares.CurrentAddress; i < sockares.Addresses.Length; i++) {
|
|
try {
|
|
sockares.CurrentAddress++;
|
|
sockares.EndPoint = new IPEndPoint (sockares.Addresses [i], sockares.Port);
|
|
|
|
BeginSConnect (sockares);
|
|
return;
|
|
} catch (Exception e) {
|
|
exc = e;
|
|
}
|
|
}
|
|
|
|
throw exc;
|
|
}
|
|
|
|
static void BeginSConnect (SocketAsyncResult sockares)
|
|
{
|
|
EndPoint remoteEP = sockares.EndPoint;
|
|
// Bug #75154: Connect() should not succeed for .Any addresses.
|
|
if (remoteEP is IPEndPoint) {
|
|
IPEndPoint ep = (IPEndPoint) remoteEP;
|
|
if (ep.Address.Equals (IPAddress.Any) || ep.Address.Equals (IPAddress.IPv6Any)) {
|
|
sockares.Complete (new SocketException ((int) SocketError.AddressNotAvailable), true);
|
|
return;
|
|
}
|
|
|
|
sockares.EndPoint = remoteEP = sockares.socket.RemapIPEndPoint (ep);
|
|
}
|
|
|
|
if (!sockares.socket.CanTryAddressFamily(sockares.EndPoint.AddressFamily)) {
|
|
throw new ArgumentException(SR.net_invalidAddressList);
|
|
}
|
|
|
|
int error = 0;
|
|
|
|
if (sockares.socket.connect_in_progress) {
|
|
// This could happen when multiple IPs are used
|
|
// Calling connect() again will reset the connection attempt and cause
|
|
// an error. Better to just close the socket and move on.
|
|
sockares.socket.connect_in_progress = false;
|
|
sockares.socket.m_Handle.Dispose ();
|
|
sockares.socket.m_Handle = new SafeSocketHandle (sockares.socket.Socket_internal (sockares.socket.addressFamily, sockares.socket.socketType, sockares.socket.protocolType, out error), true);
|
|
if (error != 0)
|
|
throw new SocketException (error);
|
|
}
|
|
|
|
bool blk = sockares.socket.is_blocking;
|
|
if (blk)
|
|
sockares.socket.Blocking = false;
|
|
Connect_internal (sockares.socket.m_Handle, remoteEP.Serialize (), out error, false);
|
|
if (blk)
|
|
sockares.socket.Blocking = true;
|
|
|
|
if (error == 0) {
|
|
// succeeded synch
|
|
sockares.socket.is_connected = true;
|
|
sockares.socket.is_bound = true;
|
|
sockares.Complete (true);
|
|
return;
|
|
}
|
|
|
|
if (error != (int) SocketError.InProgress && error != (int) SocketError.WouldBlock) {
|
|
// error synch
|
|
sockares.socket.is_connected = false;
|
|
sockares.socket.is_bound = false;
|
|
sockares.Complete (new SocketException (error), true);
|
|
return;
|
|
}
|
|
|
|
// continue asynch
|
|
sockares.socket.is_connected = false;
|
|
sockares.socket.is_bound = false;
|
|
sockares.socket.connect_in_progress = true;
|
|
|
|
IOSelector.Add (sockares.Handle, new IOSelectorJob (IOOperation.Write, BeginConnectCallback, sockares));
|
|
}
|
|
|
|
static IOAsyncCallback BeginConnectCallback = new IOAsyncCallback (ares => {
|
|
SocketAsyncResult sockares = (SocketAsyncResult) ares;
|
|
|
|
if (sockares.EndPoint == null) {
|
|
sockares.Complete (new SocketException ((int)SocketError.AddressNotAvailable));
|
|
return;
|
|
}
|
|
|
|
try {
|
|
int error = (int) sockares.socket.GetSocketOption (SocketOptionLevel.Socket, SocketOptionName.Error);
|
|
|
|
if (error == 0) {
|
|
sockares.socket.seed_endpoint = sockares.EndPoint;
|
|
sockares.socket.is_connected = true;
|
|
sockares.socket.is_bound = true;
|
|
sockares.socket.connect_in_progress = false;
|
|
sockares.error = 0;
|
|
sockares.Complete ();
|
|
return;
|
|
}
|
|
|
|
if (sockares.Addresses == null) {
|
|
sockares.socket.connect_in_progress = false;
|
|
sockares.Complete (new SocketException (error));
|
|
return;
|
|
}
|
|
|
|
if (sockares.CurrentAddress >= sockares.Addresses.Length) {
|
|
sockares.Complete (new SocketException (error));
|
|
return;
|
|
}
|
|
|
|
BeginMConnect (sockares);
|
|
} catch (Exception e) {
|
|
sockares.socket.connect_in_progress = false;
|
|
sockares.Complete (e);
|
|
}
|
|
});
|
|
|
|
public void EndConnect (IAsyncResult asyncResult)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
SocketAsyncResult sockares = ValidateEndIAsyncResult (asyncResult, "EndConnect", "asyncResult");
|
|
|
|
if (!sockares.IsCompleted)
|
|
sockares.AsyncWaitHandle.WaitOne();
|
|
|
|
sockares.CheckIfThrowDelayedException();
|
|
}
|
|
|
|
static void Connect_internal (SafeSocketHandle safeHandle, SocketAddress sa, out int error, bool blocking)
|
|
{
|
|
try {
|
|
safeHandle.RegisterForBlockingSyscall ();
|
|
Connect_internal (safeHandle.DangerousGetHandle (), sa, out error, blocking);
|
|
} finally {
|
|
safeHandle.UnRegisterForBlockingSyscall ();
|
|
}
|
|
}
|
|
|
|
/* Connects to the remote address */
|
|
[MethodImplAttribute(MethodImplOptions.InternalCall)]
|
|
extern static void Connect_internal(IntPtr sock, SocketAddress sa, out int error, bool blocking);
|
|
|
|
/* Returns :
|
|
* - false when it is ok to use RemoteEndPoint
|
|
* - true when addresses must be used (and addresses could be null/empty) */
|
|
bool GetCheckedIPs (SocketAsyncEventArgs e, out IPAddress [] addresses)
|
|
{
|
|
addresses = null;
|
|
|
|
// Connect to the first address that match the host name, like:
|
|
// http://blogs.msdn.com/ncl/archive/2009/07/20/new-ncl-features-in-net-4-0-beta-2.aspx
|
|
// while skipping entries that do not match the address family
|
|
DnsEndPoint dep = e.RemoteEndPoint as DnsEndPoint;
|
|
if (dep != null) {
|
|
addresses = Dns.GetHostAddresses (dep.Host);
|
|
|
|
if (dep.AddressFamily == AddressFamily.Unspecified)
|
|
return true;
|
|
|
|
int last_valid = 0;
|
|
for (int i = 0; i < addresses.Length; ++i) {
|
|
if (addresses [i].AddressFamily != dep.AddressFamily)
|
|
continue;
|
|
|
|
addresses [last_valid++] = addresses [i];
|
|
}
|
|
|
|
if (last_valid != addresses.Length)
|
|
Array.Resize (ref addresses, last_valid);
|
|
return true;
|
|
} else {
|
|
e.ConnectByNameError = null;
|
|
return false;
|
|
}
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region Disconnect
|
|
|
|
/* According to the docs, the MS runtime will throw PlatformNotSupportedException
|
|
* if the platform is newer than w2k. We should be able to cope... */
|
|
public void Disconnect (bool reuseSocket)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
int error = 0;
|
|
Disconnect_internal (m_Handle, reuseSocket, out error);
|
|
|
|
if (error != 0) {
|
|
if (error == 50) {
|
|
/* ERROR_NOT_SUPPORTED */
|
|
throw new PlatformNotSupportedException ();
|
|
} else {
|
|
throw new SocketException (error);
|
|
}
|
|
}
|
|
|
|
is_connected = false;
|
|
if (reuseSocket) {
|
|
/* Do managed housekeeping here... */
|
|
}
|
|
}
|
|
|
|
public bool DisconnectAsync (SocketAsyncEventArgs e)
|
|
{
|
|
// NO check is made whether e != null in MS.NET (NRE is thrown in such case)
|
|
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
InitSocketAsyncEventArgs (e, DisconnectAsyncCallback, e, SocketOperation.Disconnect);
|
|
|
|
IOSelector.Add (e.socket_async_result.Handle, new IOSelectorJob (IOOperation.Write, BeginDisconnectCallback, e.socket_async_result));
|
|
|
|
return true;
|
|
}
|
|
|
|
static AsyncCallback DisconnectAsyncCallback = new AsyncCallback (ares => {
|
|
SocketAsyncEventArgs e = (SocketAsyncEventArgs) ((SocketAsyncResult) ares).AsyncState;
|
|
|
|
if (Interlocked.Exchange (ref e.in_progress, 0) != 1)
|
|
throw new InvalidOperationException ("No operation in progress");
|
|
|
|
try {
|
|
e.current_socket.EndDisconnect (ares);
|
|
} catch (SocketException ex) {
|
|
e.SocketError = ex.SocketErrorCode;
|
|
} catch (ObjectDisposedException) {
|
|
e.SocketError = SocketError.OperationAborted;
|
|
} finally {
|
|
e.Complete ();
|
|
}
|
|
});
|
|
|
|
public IAsyncResult BeginDisconnect (bool reuseSocket, AsyncCallback callback, object state)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
SocketAsyncResult sockares = new SocketAsyncResult (this, callback, state, SocketOperation.Disconnect) {
|
|
ReuseSocket = reuseSocket,
|
|
};
|
|
|
|
IOSelector.Add (sockares.Handle, new IOSelectorJob (IOOperation.Write, BeginDisconnectCallback, sockares));
|
|
|
|
return sockares;
|
|
}
|
|
|
|
static IOAsyncCallback BeginDisconnectCallback = new IOAsyncCallback (ares => {
|
|
SocketAsyncResult sockares = (SocketAsyncResult) ares;
|
|
|
|
try {
|
|
sockares.socket.Disconnect (sockares.ReuseSocket);
|
|
} catch (Exception e) {
|
|
sockares.Complete (e);
|
|
return;
|
|
}
|
|
|
|
sockares.Complete ();
|
|
});
|
|
|
|
public void EndDisconnect (IAsyncResult asyncResult)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
SocketAsyncResult sockares = ValidateEndIAsyncResult (asyncResult, "EndDisconnect", "asyncResult");
|
|
|
|
if (!sockares.IsCompleted)
|
|
sockares.AsyncWaitHandle.WaitOne ();
|
|
|
|
sockares.CheckIfThrowDelayedException ();
|
|
}
|
|
|
|
static void Disconnect_internal (SafeSocketHandle safeHandle, bool reuse, out int error)
|
|
{
|
|
bool release = false;
|
|
try {
|
|
safeHandle.DangerousAddRef (ref release);
|
|
Disconnect_internal (safeHandle.DangerousGetHandle (), reuse, out error);
|
|
} finally {
|
|
if (release)
|
|
safeHandle.DangerousRelease ();
|
|
}
|
|
}
|
|
|
|
[MethodImplAttribute(MethodImplOptions.InternalCall)]
|
|
extern static void Disconnect_internal (IntPtr sock, bool reuse, out int error);
|
|
|
|
#endregion
|
|
|
|
#region Receive
|
|
|
|
public int Receive (byte [] buffer, int offset, int size, SocketFlags socketFlags, out SocketError errorCode)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
ThrowIfBufferNull (buffer);
|
|
ThrowIfBufferOutOfRange (buffer, offset, size);
|
|
|
|
int nativeError;
|
|
int ret;
|
|
unsafe {
|
|
fixed (byte* pbuffer = buffer) {
|
|
ret = Receive_internal (m_Handle, &pbuffer[offset], size, socketFlags, out nativeError, is_blocking);
|
|
}
|
|
}
|
|
|
|
errorCode = (SocketError) nativeError;
|
|
if (errorCode != SocketError.Success && errorCode != SocketError.WouldBlock && errorCode != SocketError.InProgress) {
|
|
is_connected = false;
|
|
is_bound = false;
|
|
} else {
|
|
is_connected = true;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
[CLSCompliant (false)]
|
|
public int Receive (IList<ArraySegment<byte>> buffers, SocketFlags socketFlags, out SocketError errorCode)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
if (buffers == null || buffers.Count == 0)
|
|
throw new ArgumentNullException ("buffers");
|
|
|
|
int numsegments = buffers.Count;
|
|
int nativeError;
|
|
int ret;
|
|
|
|
GCHandle[] gch = new GCHandle[numsegments];
|
|
try {
|
|
unsafe {
|
|
fixed (WSABUF* bufarray = new WSABUF[numsegments]) {
|
|
for (int i = 0; i < numsegments; i++) {
|
|
ArraySegment<byte> segment = buffers[i];
|
|
|
|
if (segment.Offset < 0 || segment.Count < 0 || segment.Count > segment.Array.Length - segment.Offset)
|
|
throw new ArgumentOutOfRangeException ("segment");
|
|
|
|
try {} finally {
|
|
gch[i] = GCHandle.Alloc (segment.Array, GCHandleType.Pinned);
|
|
}
|
|
|
|
bufarray[i].len = segment.Count;
|
|
bufarray[i].buf = Marshal.UnsafeAddrOfPinnedArrayElement (segment.Array, segment.Offset);
|
|
}
|
|
|
|
ret = Receive_internal (m_Handle, bufarray, numsegments, socketFlags, out nativeError, is_blocking);
|
|
}
|
|
}
|
|
} finally {
|
|
for (int i = 0; i < numsegments; i++) {
|
|
if (gch[i].IsAllocated)
|
|
gch[i].Free ();
|
|
}
|
|
}
|
|
|
|
errorCode = (SocketError) nativeError;
|
|
|
|
return ret;
|
|
}
|
|
|
|
public int Receive (Span<byte> buffer, SocketFlags socketFlags)
|
|
{
|
|
byte[] tempBuffer = new byte[buffer.Length];
|
|
int ret = Receive (tempBuffer, SocketFlags.None);
|
|
tempBuffer.CopyTo (buffer);
|
|
return ret;
|
|
}
|
|
|
|
public bool ReceiveAsync (SocketAsyncEventArgs e)
|
|
{
|
|
// NO check is made whether e != null in MS.NET (NRE is thrown in such case)
|
|
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
// LAME SPEC: the ArgumentException is never thrown, instead an NRE is
|
|
// thrown when e.Buffer and e.BufferList are null (works fine when one is
|
|
// set to a valid object)
|
|
if (e.Buffer == null && e.BufferList == null)
|
|
throw new NullReferenceException ("Either e.Buffer or e.BufferList must be valid buffers.");
|
|
|
|
if (e.Buffer == null) {
|
|
InitSocketAsyncEventArgs (e, ReceiveAsyncCallback, e, SocketOperation.ReceiveGeneric);
|
|
|
|
e.socket_async_result.Buffers = e.BufferList;
|
|
|
|
QueueIOSelectorJob (ReadSem, e.socket_async_result.Handle, new IOSelectorJob (IOOperation.Read, BeginReceiveGenericCallback, e.socket_async_result));
|
|
} else {
|
|
InitSocketAsyncEventArgs (e, ReceiveAsyncCallback, e, SocketOperation.Receive);
|
|
|
|
e.socket_async_result.Buffer = e.Buffer;
|
|
e.socket_async_result.Offset = e.Offset;
|
|
e.socket_async_result.Size = e.Count;
|
|
|
|
QueueIOSelectorJob (ReadSem, e.socket_async_result.Handle, new IOSelectorJob (IOOperation.Read, BeginReceiveCallback, e.socket_async_result));
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static AsyncCallback ReceiveAsyncCallback = new AsyncCallback (ares => {
|
|
SocketAsyncEventArgs e = (SocketAsyncEventArgs) ((SocketAsyncResult) ares).AsyncState;
|
|
|
|
if (Interlocked.Exchange (ref e.in_progress, 0) != 1)
|
|
throw new InvalidOperationException ("No operation in progress");
|
|
|
|
try {
|
|
e.BytesTransferred = e.current_socket.EndReceive (ares);
|
|
} catch (SocketException se){
|
|
e.SocketError = se.SocketErrorCode;
|
|
} catch (ObjectDisposedException) {
|
|
e.SocketError = SocketError.OperationAborted;
|
|
} finally {
|
|
e.Complete ();
|
|
}
|
|
});
|
|
|
|
public IAsyncResult BeginReceive (byte[] buffer, int offset, int size, SocketFlags socketFlags, out SocketError errorCode, AsyncCallback callback, object state)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
ThrowIfBufferNull (buffer);
|
|
ThrowIfBufferOutOfRange (buffer, offset, size);
|
|
|
|
/* As far as I can tell from the docs and from experimentation, a pointer to the
|
|
* SocketError parameter is not supposed to be saved for the async parts. And as we don't
|
|
* set any socket errors in the setup code, we just have to set it to Success. */
|
|
errorCode = SocketError.Success;
|
|
|
|
SocketAsyncResult sockares = new SocketAsyncResult (this, callback, state, SocketOperation.Receive) {
|
|
Buffer = buffer,
|
|
Offset = offset,
|
|
Size = size,
|
|
SockFlags = socketFlags,
|
|
};
|
|
|
|
QueueIOSelectorJob (ReadSem, sockares.Handle, new IOSelectorJob (IOOperation.Read, BeginReceiveCallback, sockares));
|
|
|
|
return sockares;
|
|
}
|
|
|
|
static IOAsyncCallback BeginReceiveCallback = new IOAsyncCallback (ares => {
|
|
SocketAsyncResult sockares = (SocketAsyncResult) ares;
|
|
int total = 0;
|
|
|
|
try {
|
|
unsafe {
|
|
fixed (byte* pbuffer = sockares.Buffer) {
|
|
total = Receive_internal (sockares.socket.m_Handle, &pbuffer[sockares.Offset], sockares.Size, sockares.SockFlags, out sockares.error, sockares.socket.is_blocking);
|
|
}
|
|
}
|
|
} catch (Exception e) {
|
|
sockares.Complete (e);
|
|
return;
|
|
}
|
|
|
|
sockares.Complete (total);
|
|
});
|
|
|
|
[CLSCompliant (false)]
|
|
public IAsyncResult BeginReceive (IList<ArraySegment<byte>> buffers, SocketFlags socketFlags, out SocketError errorCode, AsyncCallback callback, object state)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
if (buffers == null)
|
|
throw new ArgumentNullException ("buffers");
|
|
|
|
/* I assume the same SocketError semantics as above */
|
|
errorCode = SocketError.Success;
|
|
|
|
SocketAsyncResult sockares = new SocketAsyncResult (this, callback, state, SocketOperation.ReceiveGeneric) {
|
|
Buffers = buffers,
|
|
SockFlags = socketFlags,
|
|
};
|
|
|
|
QueueIOSelectorJob (ReadSem, sockares.Handle, new IOSelectorJob (IOOperation.Read, BeginReceiveGenericCallback, sockares));
|
|
|
|
return sockares;
|
|
}
|
|
|
|
static IOAsyncCallback BeginReceiveGenericCallback = new IOAsyncCallback (ares => {
|
|
SocketAsyncResult sockares = (SocketAsyncResult) ares;
|
|
int total = 0;
|
|
|
|
try {
|
|
total = sockares.socket.Receive (sockares.Buffers, sockares.SockFlags);
|
|
} catch (Exception e) {
|
|
sockares.Complete (e);
|
|
return;
|
|
}
|
|
|
|
sockares.Complete (total);
|
|
});
|
|
|
|
public int EndReceive (IAsyncResult asyncResult, out SocketError errorCode)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
SocketAsyncResult sockares = ValidateEndIAsyncResult (asyncResult, "EndReceive", "asyncResult");
|
|
|
|
if (!sockares.IsCompleted)
|
|
sockares.AsyncWaitHandle.WaitOne ();
|
|
|
|
errorCode = sockares.ErrorCode;
|
|
|
|
if (errorCode != SocketError.Success && errorCode != SocketError.WouldBlock && errorCode != SocketError.InProgress)
|
|
is_connected = false;
|
|
|
|
// If no socket error occurred, call CheckIfThrowDelayedException in case there are other
|
|
// kinds of exceptions that should be thrown.
|
|
if (errorCode == SocketError.Success)
|
|
sockares.CheckIfThrowDelayedException();
|
|
|
|
return sockares.Total;
|
|
}
|
|
|
|
static unsafe int Receive_internal (SafeSocketHandle safeHandle, WSABUF* bufarray, int count, SocketFlags flags, out int error, bool blocking)
|
|
{
|
|
try {
|
|
safeHandle.RegisterForBlockingSyscall ();
|
|
return Receive_internal (safeHandle.DangerousGetHandle (), bufarray, count, flags, out error, blocking);
|
|
} finally {
|
|
safeHandle.UnRegisterForBlockingSyscall ();
|
|
}
|
|
}
|
|
|
|
[MethodImplAttribute (MethodImplOptions.InternalCall)]
|
|
extern static unsafe int Receive_internal (IntPtr sock, WSABUF* bufarray, int count, SocketFlags flags, out int error, bool blocking);
|
|
|
|
static unsafe int Receive_internal (SafeSocketHandle safeHandle, byte* buffer, int count, SocketFlags flags, out int error, bool blocking)
|
|
{
|
|
try {
|
|
safeHandle.RegisterForBlockingSyscall ();
|
|
return Receive_internal (safeHandle.DangerousGetHandle (), buffer, count, flags, out error, blocking);
|
|
} finally {
|
|
safeHandle.UnRegisterForBlockingSyscall ();
|
|
}
|
|
}
|
|
|
|
[MethodImplAttribute(MethodImplOptions.InternalCall)]
|
|
extern static unsafe int Receive_internal(IntPtr sock, byte* buffer, int count, SocketFlags flags, out int error, bool blocking);
|
|
|
|
#endregion
|
|
|
|
#region ReceiveFrom
|
|
|
|
public int ReceiveFrom (byte [] buffer, int offset, int size, SocketFlags socketFlags, ref EndPoint remoteEP)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
ThrowIfBufferNull (buffer);
|
|
ThrowIfBufferOutOfRange (buffer, offset, size);
|
|
|
|
if (remoteEP == null)
|
|
throw new ArgumentNullException ("remoteEP");
|
|
|
|
SocketError errorCode;
|
|
int ret = ReceiveFrom (buffer, offset, size, socketFlags, ref remoteEP, out errorCode);
|
|
|
|
if (errorCode != SocketError.Success)
|
|
throw new SocketException (errorCode);
|
|
|
|
return ret;
|
|
}
|
|
|
|
internal int ReceiveFrom (byte [] buffer, int offset, int size, SocketFlags socketFlags, ref EndPoint remoteEP, out SocketError errorCode)
|
|
{
|
|
SocketAddress sockaddr = remoteEP.Serialize();
|
|
|
|
int nativeError;
|
|
int cnt;
|
|
unsafe {
|
|
fixed (byte* pbuffer = buffer) {
|
|
cnt = ReceiveFrom_internal (m_Handle, &pbuffer[offset], size, socketFlags, ref sockaddr, out nativeError, is_blocking);
|
|
}
|
|
}
|
|
|
|
errorCode = (SocketError) nativeError;
|
|
if (errorCode != SocketError.Success) {
|
|
if (errorCode != SocketError.WouldBlock && errorCode != SocketError.InProgress) {
|
|
is_connected = false;
|
|
} else if (errorCode == SocketError.WouldBlock && is_blocking) { // This might happen when ReceiveTimeout is set
|
|
errorCode = SocketError.TimedOut;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
is_connected = true;
|
|
is_bound = true;
|
|
|
|
/* If sockaddr is null then we're a connection oriented protocol and should ignore the
|
|
* remoteEP parameter (see MSDN documentation for Socket.ReceiveFrom(...) ) */
|
|
if (sockaddr != null) {
|
|
/* Stupidly, EndPoint.Create() is an instance method */
|
|
remoteEP = remoteEP.Create (sockaddr);
|
|
}
|
|
|
|
seed_endpoint = remoteEP;
|
|
|
|
return cnt;
|
|
}
|
|
|
|
public bool ReceiveFromAsync (SocketAsyncEventArgs e)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
// We do not support recv into multiple buffers yet
|
|
if (e.BufferList != null)
|
|
throw new NotSupportedException ("Mono doesn't support using BufferList at this point.");
|
|
if (e.RemoteEndPoint == null)
|
|
throw new ArgumentNullException ("remoteEP", "Value cannot be null.");
|
|
|
|
InitSocketAsyncEventArgs (e, ReceiveFromAsyncCallback, e, SocketOperation.ReceiveFrom);
|
|
|
|
e.socket_async_result.Buffer = e.Buffer;
|
|
e.socket_async_result.Offset = e.Offset;
|
|
e.socket_async_result.Size = e.Count;
|
|
e.socket_async_result.EndPoint = e.RemoteEndPoint;
|
|
e.socket_async_result.SockFlags = e.SocketFlags;
|
|
|
|
QueueIOSelectorJob (ReadSem, e.socket_async_result.Handle, new IOSelectorJob (IOOperation.Read, BeginReceiveFromCallback, e.socket_async_result));
|
|
|
|
return true;
|
|
}
|
|
|
|
static AsyncCallback ReceiveFromAsyncCallback = new AsyncCallback (ares => {
|
|
SocketAsyncEventArgs e = (SocketAsyncEventArgs) ((SocketAsyncResult) ares).AsyncState;
|
|
|
|
if (Interlocked.Exchange (ref e.in_progress, 0) != 1)
|
|
throw new InvalidOperationException ("No operation in progress");
|
|
|
|
try {
|
|
e.BytesTransferred = e.current_socket.EndReceiveFrom (ares, ref e.remote_ep);
|
|
} catch (SocketException ex) {
|
|
e.SocketError = ex.SocketErrorCode;
|
|
} catch (ObjectDisposedException) {
|
|
e.SocketError = SocketError.OperationAborted;
|
|
} finally {
|
|
e.Complete ();
|
|
}
|
|
});
|
|
|
|
public IAsyncResult BeginReceiveFrom (byte[] buffer, int offset, int size, SocketFlags socketFlags, ref EndPoint remoteEP, AsyncCallback callback, object state)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
ThrowIfBufferNull (buffer);
|
|
ThrowIfBufferOutOfRange (buffer, offset, size);
|
|
|
|
if (remoteEP == null)
|
|
throw new ArgumentNullException ("remoteEP");
|
|
|
|
SocketAsyncResult sockares = new SocketAsyncResult (this, callback, state, SocketOperation.ReceiveFrom) {
|
|
Buffer = buffer,
|
|
Offset = offset,
|
|
Size = size,
|
|
SockFlags = socketFlags,
|
|
EndPoint = remoteEP,
|
|
};
|
|
|
|
QueueIOSelectorJob (ReadSem, sockares.Handle, new IOSelectorJob (IOOperation.Read, BeginReceiveFromCallback, sockares));
|
|
|
|
return sockares;
|
|
}
|
|
|
|
static IOAsyncCallback BeginReceiveFromCallback = new IOAsyncCallback (ares => {
|
|
SocketAsyncResult sockares = (SocketAsyncResult) ares;
|
|
int total = 0;
|
|
|
|
try {
|
|
SocketError errorCode;
|
|
total = sockares.socket.ReceiveFrom (sockares.Buffer, sockares.Offset, sockares.Size, sockares.SockFlags, ref sockares.EndPoint, out errorCode);
|
|
|
|
if (errorCode != SocketError.Success) {
|
|
sockares.Complete (new SocketException (errorCode));
|
|
return;
|
|
}
|
|
} catch (Exception e) {
|
|
sockares.Complete (e);
|
|
return;
|
|
}
|
|
|
|
sockares.Complete (total);
|
|
});
|
|
|
|
public int EndReceiveFrom(IAsyncResult asyncResult, ref EndPoint endPoint)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
if (endPoint == null)
|
|
throw new ArgumentNullException ("endPoint");
|
|
|
|
SocketAsyncResult sockares = ValidateEndIAsyncResult (asyncResult, "EndReceiveFrom", "asyncResult");
|
|
|
|
if (!sockares.IsCompleted)
|
|
sockares.AsyncWaitHandle.WaitOne();
|
|
|
|
sockares.CheckIfThrowDelayedException();
|
|
|
|
endPoint = sockares.EndPoint;
|
|
|
|
return sockares.Total;
|
|
}
|
|
|
|
|
|
|
|
static unsafe int ReceiveFrom_internal (SafeSocketHandle safeHandle, byte* buffer, int count, SocketFlags flags, ref SocketAddress sockaddr, out int error, bool blocking)
|
|
{
|
|
try {
|
|
safeHandle.RegisterForBlockingSyscall ();
|
|
return ReceiveFrom_internal (safeHandle.DangerousGetHandle (), buffer, count, flags, ref sockaddr, out error, blocking);
|
|
} finally {
|
|
safeHandle.UnRegisterForBlockingSyscall ();
|
|
}
|
|
}
|
|
|
|
[MethodImplAttribute(MethodImplOptions.InternalCall)]
|
|
extern static unsafe int ReceiveFrom_internal(IntPtr sock, byte* buffer, int count, SocketFlags flags, ref SocketAddress sockaddr, out int error, bool blocking);
|
|
|
|
#endregion
|
|
|
|
#region ReceiveMessageFrom
|
|
|
|
[MonoTODO ("Not implemented")]
|
|
public int ReceiveMessageFrom (byte[] buffer, int offset, int size, ref SocketFlags socketFlags, ref EndPoint remoteEP, out IPPacketInformation ipPacketInformation)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
ThrowIfBufferNull (buffer);
|
|
ThrowIfBufferOutOfRange (buffer, offset, size);
|
|
|
|
if (remoteEP == null)
|
|
throw new ArgumentNullException ("remoteEP");
|
|
|
|
// FIXME: figure out how we get hold of the IPPacketInformation
|
|
throw new NotImplementedException ();
|
|
}
|
|
|
|
[MonoTODO ("Not implemented")]
|
|
public bool ReceiveMessageFromAsync (SocketAsyncEventArgs e)
|
|
{
|
|
// NO check is made whether e != null in MS.NET (NRE is thrown in such case)
|
|
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
throw new NotImplementedException ();
|
|
}
|
|
|
|
[MonoTODO]
|
|
public IAsyncResult BeginReceiveMessageFrom (byte[] buffer, int offset, int size, SocketFlags socketFlags, ref EndPoint remoteEP, AsyncCallback callback, object state)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
ThrowIfBufferNull (buffer);
|
|
ThrowIfBufferOutOfRange (buffer, offset, size);
|
|
|
|
if (remoteEP == null)
|
|
throw new ArgumentNullException ("remoteEP");
|
|
|
|
throw new NotImplementedException ();
|
|
}
|
|
|
|
[MonoTODO]
|
|
public int EndReceiveMessageFrom (IAsyncResult asyncResult, ref SocketFlags socketFlags, ref EndPoint endPoint, out IPPacketInformation ipPacketInformation)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
if (endPoint == null)
|
|
throw new ArgumentNullException ("endPoint");
|
|
|
|
/*SocketAsyncResult sockares =*/ ValidateEndIAsyncResult (asyncResult, "EndReceiveMessageFrom", "asyncResult");
|
|
|
|
throw new NotImplementedException ();
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region Send
|
|
|
|
public int Send (byte [] buffer, int offset, int size, SocketFlags socketFlags, out SocketError errorCode)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
ThrowIfBufferNull (buffer);
|
|
ThrowIfBufferOutOfRange (buffer, offset, size);
|
|
|
|
if (size == 0) {
|
|
errorCode = SocketError.Success;
|
|
return 0;
|
|
}
|
|
|
|
int nativeError;
|
|
int sent = 0;
|
|
do {
|
|
unsafe {
|
|
fixed (byte *pbuffer = buffer) {
|
|
sent += Send_internal (m_Handle, &pbuffer[offset + sent], size - sent, socketFlags, out nativeError, is_blocking);
|
|
}
|
|
}
|
|
|
|
errorCode = (SocketError)nativeError;
|
|
if (errorCode != SocketError.Success && errorCode != SocketError.WouldBlock && errorCode != SocketError.InProgress) {
|
|
is_connected = false;
|
|
is_bound = false;
|
|
break;
|
|
} else {
|
|
is_connected = true;
|
|
}
|
|
} while (sent < size);
|
|
|
|
return sent;
|
|
}
|
|
|
|
[CLSCompliant (false)]
|
|
public int Send (IList<ArraySegment<byte>> buffers, SocketFlags socketFlags, out SocketError errorCode)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
if (buffers == null)
|
|
throw new ArgumentNullException ("buffers");
|
|
if (buffers.Count == 0)
|
|
throw new ArgumentException ("Buffer is empty", "buffers");
|
|
|
|
int numsegments = buffers.Count;
|
|
int nativeError;
|
|
int ret;
|
|
|
|
GCHandle[] gch = new GCHandle[numsegments];
|
|
try {
|
|
unsafe {
|
|
fixed (WSABUF* bufarray = new WSABUF[numsegments]) {
|
|
for(int i = 0; i < numsegments; i++) {
|
|
ArraySegment<byte> segment = buffers[i];
|
|
|
|
if (segment.Offset < 0 || segment.Count < 0 || segment.Count > segment.Array.Length - segment.Offset)
|
|
throw new ArgumentOutOfRangeException ("segment");
|
|
|
|
try {} finally {
|
|
gch[i] = GCHandle.Alloc (segment.Array, GCHandleType.Pinned);
|
|
}
|
|
|
|
bufarray[i].len = segment.Count;
|
|
bufarray[i].buf = Marshal.UnsafeAddrOfPinnedArrayElement (segment.Array, segment.Offset);
|
|
}
|
|
|
|
ret = Send_internal (m_Handle, bufarray, numsegments, socketFlags, out nativeError, is_blocking);
|
|
}
|
|
}
|
|
} finally {
|
|
for (int i = 0; i < numsegments; i++) {
|
|
if (gch[i].IsAllocated)
|
|
gch[i].Free();
|
|
}
|
|
}
|
|
|
|
errorCode = (SocketError)nativeError;
|
|
|
|
return ret;
|
|
}
|
|
|
|
public int Send (ReadOnlySpan<byte> buffer, SocketFlags socketFlags)
|
|
{
|
|
return Send (buffer.ToArray(), socketFlags);
|
|
}
|
|
|
|
public bool SendAsync (SocketAsyncEventArgs e)
|
|
{
|
|
// NO check is made whether e != null in MS.NET (NRE is thrown in such case)
|
|
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
if (e.Buffer == null && e.BufferList == null)
|
|
throw new NullReferenceException ("Either e.Buffer or e.BufferList must be valid buffers.");
|
|
|
|
if (e.Buffer == null) {
|
|
InitSocketAsyncEventArgs (e, SendAsyncCallback, e, SocketOperation.SendGeneric);
|
|
|
|
e.socket_async_result.Buffers = e.BufferList;
|
|
|
|
QueueIOSelectorJob (WriteSem, e.socket_async_result.Handle, new IOSelectorJob (IOOperation.Write, BeginSendGenericCallback, e.socket_async_result));
|
|
} else {
|
|
InitSocketAsyncEventArgs (e, SendAsyncCallback, e, SocketOperation.Send);
|
|
|
|
e.socket_async_result.Buffer = e.Buffer;
|
|
e.socket_async_result.Offset = e.Offset;
|
|
e.socket_async_result.Size = e.Count;
|
|
|
|
QueueIOSelectorJob (WriteSem, e.socket_async_result.Handle, new IOSelectorJob (IOOperation.Write, s => BeginSendCallback ((SocketAsyncResult) s, 0), e.socket_async_result));
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static AsyncCallback SendAsyncCallback = new AsyncCallback (ares => {
|
|
SocketAsyncEventArgs e = (SocketAsyncEventArgs) ((SocketAsyncResult) ares).AsyncState;
|
|
|
|
if (Interlocked.Exchange (ref e.in_progress, 0) != 1)
|
|
throw new InvalidOperationException ("No operation in progress");
|
|
|
|
try {
|
|
e.BytesTransferred = e.current_socket.EndSend (ares);
|
|
} catch (SocketException se){
|
|
e.SocketError = se.SocketErrorCode;
|
|
} catch (ObjectDisposedException) {
|
|
e.SocketError = SocketError.OperationAborted;
|
|
} finally {
|
|
e.Complete ();
|
|
}
|
|
});
|
|
|
|
public IAsyncResult BeginSend (byte[] buffer, int offset, int size, SocketFlags socketFlags, out SocketError errorCode, AsyncCallback callback, object state)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
ThrowIfBufferNull (buffer);
|
|
ThrowIfBufferOutOfRange (buffer, offset, size);
|
|
|
|
if (!is_connected) {
|
|
errorCode = SocketError.NotConnected;
|
|
return null;
|
|
}
|
|
|
|
errorCode = SocketError.Success;
|
|
|
|
SocketAsyncResult sockares = new SocketAsyncResult (this, callback, state, SocketOperation.Send) {
|
|
Buffer = buffer,
|
|
Offset = offset,
|
|
Size = size,
|
|
SockFlags = socketFlags,
|
|
};
|
|
|
|
QueueIOSelectorJob (WriteSem, sockares.Handle, new IOSelectorJob (IOOperation.Write, s => BeginSendCallback ((SocketAsyncResult) s, 0), sockares));
|
|
|
|
return sockares;
|
|
}
|
|
|
|
static void BeginSendCallback (SocketAsyncResult sockares, int sent_so_far)
|
|
{
|
|
int total = 0;
|
|
|
|
try {
|
|
unsafe {
|
|
fixed (byte *pbuffer = sockares.Buffer) {
|
|
total = Socket.Send_internal (sockares.socket.m_Handle, &pbuffer[sockares.Offset], sockares.Size, sockares.SockFlags, out sockares.error, false);
|
|
}
|
|
}
|
|
} catch (Exception e) {
|
|
sockares.Complete (e);
|
|
return;
|
|
}
|
|
|
|
if (sockares.error == 0) {
|
|
sent_so_far += total;
|
|
sockares.Offset += total;
|
|
sockares.Size -= total;
|
|
|
|
if (sockares.socket.CleanedUp) {
|
|
sockares.Complete (sent_so_far);
|
|
return;
|
|
}
|
|
|
|
if (sockares.Size > 0) {
|
|
IOSelector.Add (sockares.Handle, new IOSelectorJob (IOOperation.Write, s => BeginSendCallback ((SocketAsyncResult) s, sent_so_far), sockares));
|
|
return; // Have to finish writing everything. See bug #74475.
|
|
}
|
|
|
|
sockares.Total = sent_so_far;
|
|
}
|
|
|
|
sockares.Complete (sent_so_far);
|
|
}
|
|
|
|
[CLSCompliant (false)]
|
|
public IAsyncResult BeginSend (IList<ArraySegment<byte>> buffers, SocketFlags socketFlags, out SocketError errorCode, AsyncCallback callback, object state)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
if (buffers == null)
|
|
throw new ArgumentNullException ("buffers");
|
|
|
|
if (!is_connected) {
|
|
errorCode = SocketError.NotConnected;
|
|
return null;
|
|
}
|
|
|
|
errorCode = SocketError.Success;
|
|
|
|
SocketAsyncResult sockares = new SocketAsyncResult (this, callback, state, SocketOperation.SendGeneric) {
|
|
Buffers = buffers,
|
|
SockFlags = socketFlags,
|
|
};
|
|
|
|
QueueIOSelectorJob (WriteSem, sockares.Handle, new IOSelectorJob (IOOperation.Write, BeginSendGenericCallback, sockares));
|
|
|
|
return sockares;
|
|
}
|
|
|
|
static IOAsyncCallback BeginSendGenericCallback = new IOAsyncCallback (ares => {
|
|
SocketAsyncResult sockares = (SocketAsyncResult) ares;
|
|
int total = 0;
|
|
|
|
try {
|
|
total = sockares.socket.Send (sockares.Buffers, sockares.SockFlags);
|
|
} catch (Exception e) {
|
|
sockares.Complete (e);
|
|
return;
|
|
}
|
|
|
|
sockares.Complete (total);
|
|
});
|
|
|
|
public int EndSend (IAsyncResult asyncResult, out SocketError errorCode)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
SocketAsyncResult sockares = ValidateEndIAsyncResult (asyncResult, "EndSend", "asyncResult");
|
|
|
|
if (!sockares.IsCompleted)
|
|
sockares.AsyncWaitHandle.WaitOne ();
|
|
|
|
errorCode = sockares.ErrorCode;
|
|
|
|
if (errorCode != SocketError.Success && errorCode != SocketError.WouldBlock && errorCode != SocketError.InProgress)
|
|
is_connected = false;
|
|
|
|
/* If no socket error occurred, call CheckIfThrowDelayedException in
|
|
* case there are other kinds of exceptions that should be thrown.*/
|
|
if (errorCode == SocketError.Success)
|
|
sockares.CheckIfThrowDelayedException ();
|
|
|
|
return sockares.Total;
|
|
}
|
|
|
|
static unsafe int Send_internal (SafeSocketHandle safeHandle, WSABUF* bufarray, int count, SocketFlags flags, out int error, bool blocking)
|
|
{
|
|
try {
|
|
safeHandle.RegisterForBlockingSyscall ();
|
|
return Send_internal (safeHandle.DangerousGetHandle (), bufarray, count, flags, out error, blocking);
|
|
} finally {
|
|
safeHandle.UnRegisterForBlockingSyscall ();
|
|
}
|
|
}
|
|
|
|
[MethodImplAttribute (MethodImplOptions.InternalCall)]
|
|
extern static unsafe int Send_internal (IntPtr sock, WSABUF* bufarray, int count, SocketFlags flags, out int error, bool blocking);
|
|
|
|
static unsafe int Send_internal (SafeSocketHandle safeHandle, byte* buffer, int count, SocketFlags flags, out int error, bool blocking)
|
|
{
|
|
try {
|
|
safeHandle.RegisterForBlockingSyscall ();
|
|
return Send_internal (safeHandle.DangerousGetHandle (), buffer, count, flags, out error, blocking);
|
|
} finally {
|
|
safeHandle.UnRegisterForBlockingSyscall ();
|
|
}
|
|
}
|
|
|
|
[MethodImplAttribute(MethodImplOptions.InternalCall)]
|
|
extern static unsafe int Send_internal(IntPtr sock, byte* buffer, int count, SocketFlags flags, out int error, bool blocking);
|
|
|
|
#endregion
|
|
|
|
#region SendTo
|
|
|
|
public int SendTo (byte [] buffer, int offset, int size, SocketFlags socketFlags, EndPoint remoteEP)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
ThrowIfBufferNull (buffer);
|
|
ThrowIfBufferOutOfRange (buffer, offset, size);
|
|
|
|
if (remoteEP == null)
|
|
throw new ArgumentNullException("remoteEP");
|
|
|
|
int error;
|
|
int ret;
|
|
unsafe {
|
|
fixed (byte *pbuffer = buffer) {
|
|
ret = SendTo_internal (m_Handle, &pbuffer[offset], size, socketFlags, remoteEP.Serialize (), out error, is_blocking);
|
|
}
|
|
}
|
|
|
|
SocketError err = (SocketError) error;
|
|
if (err != 0) {
|
|
if (err != SocketError.WouldBlock && err != SocketError.InProgress)
|
|
is_connected = false;
|
|
throw new SocketException (error);
|
|
}
|
|
|
|
is_connected = true;
|
|
is_bound = true;
|
|
seed_endpoint = remoteEP;
|
|
|
|
return ret;
|
|
}
|
|
|
|
public bool SendToAsync (SocketAsyncEventArgs e)
|
|
{
|
|
// NO check is made whether e != null in MS.NET (NRE is thrown in such case)
|
|
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
if (e.BufferList != null)
|
|
throw new NotSupportedException ("Mono doesn't support using BufferList at this point.");
|
|
if (e.RemoteEndPoint == null)
|
|
throw new ArgumentNullException ("remoteEP", "Value cannot be null.");
|
|
|
|
InitSocketAsyncEventArgs (e, SendToAsyncCallback, e, SocketOperation.SendTo);
|
|
|
|
e.socket_async_result.Buffer = e.Buffer;
|
|
e.socket_async_result.Offset = e.Offset;
|
|
e.socket_async_result.Size = e.Count;
|
|
e.socket_async_result.SockFlags = e.SocketFlags;
|
|
e.socket_async_result.EndPoint = e.RemoteEndPoint;
|
|
|
|
QueueIOSelectorJob (WriteSem, e.socket_async_result.Handle, new IOSelectorJob (IOOperation.Write, s => BeginSendToCallback ((SocketAsyncResult) s, 0), e.socket_async_result));
|
|
|
|
return true;
|
|
}
|
|
|
|
static AsyncCallback SendToAsyncCallback = new AsyncCallback (ares => {
|
|
SocketAsyncEventArgs e = (SocketAsyncEventArgs) ((SocketAsyncResult) ares).AsyncState;
|
|
|
|
if (Interlocked.Exchange (ref e.in_progress, 0) != 1)
|
|
throw new InvalidOperationException ("No operation in progress");
|
|
|
|
try {
|
|
e.BytesTransferred = e.current_socket.EndSendTo (ares);
|
|
} catch (SocketException ex) {
|
|
e.SocketError = ex.SocketErrorCode;
|
|
} catch (ObjectDisposedException) {
|
|
e.SocketError = SocketError.OperationAborted;
|
|
} finally {
|
|
e.Complete ();
|
|
}
|
|
});
|
|
|
|
public IAsyncResult BeginSendTo(byte[] buffer, int offset, int size, SocketFlags socketFlags, EndPoint remoteEP, AsyncCallback callback, object state)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
ThrowIfBufferNull (buffer);
|
|
ThrowIfBufferOutOfRange (buffer, offset, size);
|
|
|
|
SocketAsyncResult sockares = new SocketAsyncResult (this, callback, state, SocketOperation.SendTo) {
|
|
Buffer = buffer,
|
|
Offset = offset,
|
|
Size = size,
|
|
SockFlags = socketFlags,
|
|
EndPoint = remoteEP,
|
|
};
|
|
|
|
QueueIOSelectorJob (WriteSem, sockares.Handle, new IOSelectorJob (IOOperation.Write, s => BeginSendToCallback ((SocketAsyncResult) s, 0), sockares));
|
|
|
|
return sockares;
|
|
}
|
|
|
|
static void BeginSendToCallback (SocketAsyncResult sockares, int sent_so_far)
|
|
{
|
|
int total = 0;
|
|
try {
|
|
total = sockares.socket.SendTo (sockares.Buffer, sockares.Offset, sockares.Size, sockares.SockFlags, sockares.EndPoint);
|
|
|
|
if (sockares.error == 0) {
|
|
sent_so_far += total;
|
|
sockares.Offset += total;
|
|
sockares.Size -= total;
|
|
}
|
|
|
|
if (sockares.Size > 0) {
|
|
IOSelector.Add (sockares.Handle, new IOSelectorJob (IOOperation.Write, s => BeginSendToCallback ((SocketAsyncResult) s, sent_so_far), sockares));
|
|
return; // Have to finish writing everything. See bug #74475.
|
|
}
|
|
|
|
sockares.Total = sent_so_far;
|
|
} catch (Exception e) {
|
|
sockares.Complete (e);
|
|
return;
|
|
}
|
|
|
|
sockares.Complete ();
|
|
}
|
|
|
|
public int EndSendTo (IAsyncResult asyncResult)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
SocketAsyncResult sockares = ValidateEndIAsyncResult (asyncResult, "EndSendTo", "result");
|
|
|
|
if (!sockares.IsCompleted)
|
|
sockares.AsyncWaitHandle.WaitOne();
|
|
|
|
sockares.CheckIfThrowDelayedException();
|
|
|
|
return sockares.Total;
|
|
}
|
|
|
|
static unsafe int SendTo_internal (SafeSocketHandle safeHandle, byte* buffer, int count, SocketFlags flags, SocketAddress sa, out int error, bool blocking)
|
|
{
|
|
try {
|
|
safeHandle.RegisterForBlockingSyscall ();
|
|
return SendTo_internal (safeHandle.DangerousGetHandle (), buffer, count, flags, sa, out error, blocking);
|
|
} finally {
|
|
safeHandle.UnRegisterForBlockingSyscall ();
|
|
}
|
|
}
|
|
|
|
[MethodImplAttribute(MethodImplOptions.InternalCall)]
|
|
extern static unsafe int SendTo_internal (IntPtr sock, byte* buffer, int count, SocketFlags flags, SocketAddress sa, out int error, bool blocking);
|
|
|
|
#endregion
|
|
|
|
#region SendFile
|
|
|
|
public void SendFile (string fileName, byte[] preBuffer, byte[] postBuffer, TransmitFileOptions flags)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
if (!is_connected)
|
|
throw new NotSupportedException ();
|
|
if (!is_blocking)
|
|
throw new InvalidOperationException ();
|
|
|
|
int error = 0;
|
|
if (!SendFile_internal (m_Handle, fileName, preBuffer, postBuffer, flags, out error, is_blocking) || error != 0) {
|
|
SocketException exc = new SocketException (error);
|
|
if (exc.ErrorCode == 2 || exc.ErrorCode == 3)
|
|
throw new FileNotFoundException ();
|
|
throw exc;
|
|
}
|
|
}
|
|
|
|
public IAsyncResult BeginSendFile (string fileName, byte[] preBuffer, byte[] postBuffer, TransmitFileOptions flags, AsyncCallback callback, object state)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
if (!is_connected)
|
|
throw new NotSupportedException ();
|
|
if (!File.Exists (fileName))
|
|
throw new FileNotFoundException ();
|
|
|
|
SendFileHandler handler = new SendFileHandler (SendFile);
|
|
|
|
return new SendFileAsyncResult (handler, handler.BeginInvoke (fileName, preBuffer, postBuffer, flags, ar => callback (new SendFileAsyncResult (handler, ar)), state));
|
|
}
|
|
|
|
public void EndSendFile (IAsyncResult asyncResult)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
if (asyncResult == null)
|
|
throw new ArgumentNullException ("asyncResult");
|
|
|
|
SendFileAsyncResult ares = asyncResult as SendFileAsyncResult;
|
|
if (ares == null)
|
|
throw new ArgumentException ("Invalid IAsyncResult", "asyncResult");
|
|
|
|
ares.Delegate.EndInvoke (ares.Original);
|
|
}
|
|
|
|
static bool SendFile_internal (SafeSocketHandle safeHandle, string filename, byte [] pre_buffer, byte [] post_buffer, TransmitFileOptions flags, out int error, bool blocking)
|
|
{
|
|
try {
|
|
safeHandle.RegisterForBlockingSyscall ();
|
|
return SendFile_internal (safeHandle.DangerousGetHandle (), filename, pre_buffer, post_buffer, flags, out error, blocking);
|
|
} finally {
|
|
safeHandle.UnRegisterForBlockingSyscall ();
|
|
}
|
|
}
|
|
|
|
[MethodImplAttribute(MethodImplOptions.InternalCall)]
|
|
extern static bool SendFile_internal (IntPtr sock, string filename, byte [] pre_buffer, byte [] post_buffer, TransmitFileOptions flags, out int error, bool blocking);
|
|
|
|
delegate void SendFileHandler (string fileName, byte [] preBuffer, byte [] postBuffer, TransmitFileOptions flags);
|
|
|
|
sealed class SendFileAsyncResult : IAsyncResult {
|
|
IAsyncResult ares;
|
|
SendFileHandler d;
|
|
|
|
public SendFileAsyncResult (SendFileHandler d, IAsyncResult ares)
|
|
{
|
|
this.d = d;
|
|
this.ares = ares;
|
|
}
|
|
|
|
public object AsyncState {
|
|
get { return ares.AsyncState; }
|
|
}
|
|
|
|
public WaitHandle AsyncWaitHandle {
|
|
get { return ares.AsyncWaitHandle; }
|
|
}
|
|
|
|
public bool CompletedSynchronously {
|
|
get { return ares.CompletedSynchronously; }
|
|
}
|
|
|
|
public bool IsCompleted {
|
|
get { return ares.IsCompleted; }
|
|
}
|
|
|
|
public SendFileHandler Delegate {
|
|
get { return d; }
|
|
}
|
|
|
|
public IAsyncResult Original {
|
|
get { return ares; }
|
|
}
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region SendPackets
|
|
|
|
[MonoTODO ("Not implemented")]
|
|
public bool SendPacketsAsync (SocketAsyncEventArgs e)
|
|
{
|
|
// NO check is made whether e != null in MS.NET (NRE is thrown in such case)
|
|
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
throw new NotImplementedException ();
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region DuplicateAndClose
|
|
|
|
[MethodImplAttribute(MethodImplOptions.InternalCall)]
|
|
static extern bool Duplicate_internal(IntPtr handle, int targetProcessId, out IntPtr duplicateHandle, out MonoIOError error);
|
|
|
|
[MonoLimitation ("We do not support passing sockets across processes, we merely allow this API to pass the socket across AppDomains")]
|
|
public SocketInformation DuplicateAndClose (int targetProcessId)
|
|
{
|
|
var si = new SocketInformation ();
|
|
si.Options =
|
|
(is_listening ? SocketInformationOptions.Listening : 0) |
|
|
(is_connected ? SocketInformationOptions.Connected : 0) |
|
|
(is_blocking ? 0 : SocketInformationOptions.NonBlocking) |
|
|
(useOverlappedIO ? SocketInformationOptions.UseOnlyOverlappedIO : 0);
|
|
|
|
IntPtr duplicateHandle;
|
|
if (!Duplicate_internal (Handle, targetProcessId, out duplicateHandle, out MonoIOError error))
|
|
throw MonoIO.GetException (error);
|
|
|
|
si.ProtocolInformation = Mono.DataConverter.Pack ("iiiil", (int)addressFamily, (int)socketType, (int)protocolType, is_bound ? 1 : 0, (long)duplicateHandle);
|
|
m_Handle = null;
|
|
|
|
return si;
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region GetSocketOption
|
|
|
|
public void GetSocketOption (SocketOptionLevel optionLevel, SocketOptionName optionName, byte [] optionValue)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
if (optionValue == null)
|
|
throw new SocketException ((int) SocketError.Fault, "Error trying to dereference an invalid pointer");
|
|
|
|
int error;
|
|
GetSocketOption_arr_internal (m_Handle, optionLevel, optionName, ref optionValue, out error);
|
|
|
|
if (error != 0)
|
|
throw new SocketException (error);
|
|
}
|
|
|
|
public byte [] GetSocketOption (SocketOptionLevel optionLevel, SocketOptionName optionName, int optionLength)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
int error;
|
|
byte[] byte_val = new byte [optionLength];
|
|
GetSocketOption_arr_internal (m_Handle, optionLevel, optionName, ref byte_val, out error);
|
|
|
|
if (error != 0)
|
|
throw new SocketException (error);
|
|
|
|
return byte_val;
|
|
}
|
|
|
|
public object GetSocketOption (SocketOptionLevel optionLevel, SocketOptionName optionName)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
int error;
|
|
object obj_val;
|
|
GetSocketOption_obj_internal (m_Handle, optionLevel, optionName, out obj_val, out error);
|
|
|
|
if (error != 0)
|
|
throw new SocketException (error);
|
|
|
|
if (optionName == SocketOptionName.Linger)
|
|
return (LingerOption) obj_val;
|
|
else if (optionName == SocketOptionName.AddMembership || optionName == SocketOptionName.DropMembership)
|
|
return (MulticastOption) obj_val;
|
|
else if (obj_val is int)
|
|
return (int) obj_val;
|
|
else
|
|
return obj_val;
|
|
}
|
|
|
|
static void GetSocketOption_arr_internal (SafeSocketHandle safeHandle, SocketOptionLevel level, SocketOptionName name, ref byte[] byte_val, out int error)
|
|
{
|
|
bool release = false;
|
|
try {
|
|
safeHandle.DangerousAddRef (ref release);
|
|
GetSocketOption_arr_internal (safeHandle.DangerousGetHandle (), level, name, ref byte_val, out error);
|
|
} finally {
|
|
if (release)
|
|
safeHandle.DangerousRelease ();
|
|
}
|
|
}
|
|
|
|
[MethodImplAttribute(MethodImplOptions.InternalCall)]
|
|
extern static void GetSocketOption_arr_internal(IntPtr socket, SocketOptionLevel level, SocketOptionName name, ref byte[] byte_val, out int error);
|
|
|
|
static void GetSocketOption_obj_internal (SafeSocketHandle safeHandle, SocketOptionLevel level, SocketOptionName name, out object obj_val, out int error)
|
|
{
|
|
bool release = false;
|
|
try {
|
|
safeHandle.DangerousAddRef (ref release);
|
|
GetSocketOption_obj_internal (safeHandle.DangerousGetHandle (), level, name, out obj_val, out error);
|
|
} finally {
|
|
if (release)
|
|
safeHandle.DangerousRelease ();
|
|
}
|
|
}
|
|
|
|
[MethodImplAttribute(MethodImplOptions.InternalCall)]
|
|
extern static void GetSocketOption_obj_internal(IntPtr socket, SocketOptionLevel level, SocketOptionName name, out object obj_val, out int error);
|
|
|
|
#endregion
|
|
|
|
#region SetSocketOption
|
|
|
|
public void SetSocketOption (SocketOptionLevel optionLevel, SocketOptionName optionName, byte [] optionValue)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
// I'd throw an ArgumentNullException, but this is what MS does.
|
|
if (optionValue == null)
|
|
throw new SocketException ((int) SocketError.Fault, "Error trying to dereference an invalid pointer");
|
|
|
|
int error;
|
|
SetSocketOption_internal (m_Handle, optionLevel, optionName, null, optionValue, 0, out error);
|
|
|
|
if (error != 0) {
|
|
if (error == (int) SocketError.InvalidArgument)
|
|
throw new ArgumentException ();
|
|
throw new SocketException (error);
|
|
}
|
|
}
|
|
|
|
public void SetSocketOption (SocketOptionLevel optionLevel, SocketOptionName optionName, object optionValue)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
// NOTE: if a null is passed, the byte[] overload is used instead...
|
|
if (optionValue == null)
|
|
throw new ArgumentNullException("optionValue");
|
|
|
|
int error;
|
|
|
|
if (optionLevel == SocketOptionLevel.Socket && optionName == SocketOptionName.Linger) {
|
|
LingerOption linger = optionValue as LingerOption;
|
|
if (linger == null)
|
|
throw new ArgumentException ("A 'LingerOption' value must be specified.", "optionValue");
|
|
SetSocketOption_internal (m_Handle, optionLevel, optionName, linger, null, 0, out error);
|
|
} else if (optionLevel == SocketOptionLevel.IP && (optionName == SocketOptionName.AddMembership || optionName == SocketOptionName.DropMembership)) {
|
|
MulticastOption multicast = optionValue as MulticastOption;
|
|
if (multicast == null)
|
|
throw new ArgumentException ("A 'MulticastOption' value must be specified.", "optionValue");
|
|
SetSocketOption_internal (m_Handle, optionLevel, optionName, multicast, null, 0, out error);
|
|
} else if (optionLevel == SocketOptionLevel.IPv6 && (optionName == SocketOptionName.AddMembership || optionName == SocketOptionName.DropMembership)) {
|
|
IPv6MulticastOption multicast = optionValue as IPv6MulticastOption;
|
|
if (multicast == null)
|
|
throw new ArgumentException ("A 'IPv6MulticastOption' value must be specified.", "optionValue");
|
|
SetSocketOption_internal (m_Handle, optionLevel, optionName, multicast, null, 0, out error);
|
|
} else {
|
|
throw new ArgumentException ("Invalid value specified.", "optionValue");
|
|
}
|
|
|
|
if (error != 0) {
|
|
if (error == (int) SocketError.InvalidArgument)
|
|
throw new ArgumentException ();
|
|
throw new SocketException (error);
|
|
}
|
|
}
|
|
|
|
public void SetSocketOption (SocketOptionLevel optionLevel, SocketOptionName optionName, bool optionValue)
|
|
{
|
|
int int_val = optionValue ? 1 : 0;
|
|
|
|
SetSocketOption (optionLevel, optionName, int_val);
|
|
}
|
|
|
|
public void SetSocketOption (SocketOptionLevel optionLevel, SocketOptionName optionName, int optionValue)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
int error;
|
|
SetSocketOption_internal (m_Handle, optionLevel, optionName, null, null, optionValue, out error);
|
|
|
|
if (error != 0) {
|
|
if (error == (int) SocketError.InvalidArgument)
|
|
throw new ArgumentException ();
|
|
throw new SocketException (error);
|
|
}
|
|
}
|
|
|
|
static void SetSocketOption_internal (SafeSocketHandle safeHandle, SocketOptionLevel level, SocketOptionName name, object obj_val, byte [] byte_val, int int_val, out int error)
|
|
{
|
|
bool release = false;
|
|
try {
|
|
safeHandle.DangerousAddRef (ref release);
|
|
SetSocketOption_internal (safeHandle.DangerousGetHandle (), level, name, obj_val, byte_val, int_val, out error);
|
|
} finally {
|
|
if (release)
|
|
safeHandle.DangerousRelease ();
|
|
}
|
|
}
|
|
|
|
[MethodImplAttribute(MethodImplOptions.InternalCall)]
|
|
extern static void SetSocketOption_internal (IntPtr socket, SocketOptionLevel level, SocketOptionName name, object obj_val, byte [] byte_val, int int_val, out int error);
|
|
|
|
#endregion
|
|
|
|
#region IOControl
|
|
|
|
public int IOControl (int ioControlCode, byte [] optionInValue, byte [] optionOutValue)
|
|
{
|
|
if (CleanedUp)
|
|
throw new ObjectDisposedException (GetType ().ToString ());
|
|
|
|
int error;
|
|
int result = IOControl_internal (m_Handle, ioControlCode, optionInValue, optionOutValue, out error);
|
|
|
|
if (error != 0)
|
|
throw new SocketException (error);
|
|
if (result == -1)
|
|
throw new InvalidOperationException ("Must use Blocking property instead.");
|
|
|
|
return result;
|
|
}
|
|
|
|
static int IOControl_internal (SafeSocketHandle safeHandle, int ioctl_code, byte [] input, byte [] output, out int error)
|
|
{
|
|
bool release = false;
|
|
try {
|
|
safeHandle.DangerousAddRef (ref release);
|
|
return IOControl_internal (safeHandle.DangerousGetHandle (), ioctl_code, input, output, out error);
|
|
} finally {
|
|
if (release)
|
|
safeHandle.DangerousRelease ();
|
|
}
|
|
}
|
|
|
|
/* See Socket.IOControl, WSAIoctl documentation in MSDN. The common options between UNIX
|
|
* and Winsock are FIONREAD, FIONBIO and SIOCATMARK. Anything else will depend on the system
|
|
* except SIO_KEEPALIVE_VALS which is properly handled on both windows and linux. */
|
|
[MethodImplAttribute(MethodImplOptions.InternalCall)]
|
|
extern static int IOControl_internal (IntPtr sock, int ioctl_code, byte [] input, byte [] output, out int error);
|
|
|
|
#endregion
|
|
|
|
#region Close
|
|
|
|
public void Close ()
|
|
{
|
|
linger_timeout = 0;
|
|
Dispose ();
|
|
}
|
|
|
|
public void Close (int timeout)
|
|
{
|
|
linger_timeout = timeout;
|
|
Dispose ();
|
|
}
|
|
|
|
[MethodImplAttribute(MethodImplOptions.InternalCall)]
|
|
internal extern static void Close_internal (IntPtr socket, out int error);
|
|
|
|
#endregion
|
|
|
|
#region Shutdown
|
|
|
|
public void Shutdown (SocketShutdown how)
|
|
{
|
|
ThrowIfDisposedAndClosed ();
|
|
|
|
if (!is_connected)
|
|
throw new SocketException (10057); // Not connected
|
|
|
|
int error;
|
|
Shutdown_internal (m_Handle, how, out error);
|
|
|
|
if (error != 0)
|
|
throw new SocketException (error);
|
|
}
|
|
|
|
static void Shutdown_internal (SafeSocketHandle safeHandle, SocketShutdown how, out int error)
|
|
{
|
|
bool release = false;
|
|
try {
|
|
safeHandle.DangerousAddRef (ref release);
|
|
Shutdown_internal (safeHandle.DangerousGetHandle (), how, out error);
|
|
} finally {
|
|
if (release)
|
|
safeHandle.DangerousRelease ();
|
|
}
|
|
}
|
|
|
|
[MethodImplAttribute (MethodImplOptions.InternalCall)]
|
|
internal extern static void Shutdown_internal (IntPtr socket, SocketShutdown how, out int error);
|
|
|
|
#endregion
|
|
|
|
#region Dispose
|
|
|
|
protected virtual void Dispose (bool disposing)
|
|
{
|
|
if (CleanedUp)
|
|
return;
|
|
|
|
m_IntCleanedUp = 1;
|
|
bool was_connected = is_connected;
|
|
is_connected = false;
|
|
|
|
if (m_Handle != null) {
|
|
is_closed = true;
|
|
IntPtr x = Handle;
|
|
|
|
if (was_connected)
|
|
Linger (x);
|
|
|
|
m_Handle.Dispose ();
|
|
}
|
|
}
|
|
|
|
void Linger (IntPtr handle)
|
|
{
|
|
if (!is_connected || linger_timeout <= 0)
|
|
return;
|
|
|
|
/* We don't want to receive any more data */
|
|
int error;
|
|
Shutdown_internal (handle, SocketShutdown.Receive, out error);
|
|
|
|
if (error != 0)
|
|
return;
|
|
|
|
int seconds = linger_timeout / 1000;
|
|
int ms = linger_timeout % 1000;
|
|
if (ms > 0) {
|
|
/* If the other end closes, this will return 'true' with 'Available' == 0 */
|
|
Poll_internal (handle, SelectMode.SelectRead, ms * 1000, out error);
|
|
if (error != 0)
|
|
return;
|
|
}
|
|
|
|
if (seconds > 0) {
|
|
LingerOption linger = new LingerOption (true, seconds);
|
|
SetSocketOption_internal (handle, SocketOptionLevel.Socket, SocketOptionName.Linger, linger, null, 0, out error);
|
|
/* Not needed, we're closing upon return */
|
|
//if (error != 0)
|
|
// return;
|
|
}
|
|
}
|
|
|
|
#endregion
|
|
|
|
void ThrowIfDisposedAndClosed (Socket socket)
|
|
{
|
|
if (socket.CleanedUp && socket.is_closed)
|
|
throw new ObjectDisposedException (socket.GetType ().ToString ());
|
|
}
|
|
|
|
void ThrowIfDisposedAndClosed ()
|
|
{
|
|
if (CleanedUp && is_closed)
|
|
throw new ObjectDisposedException (GetType ().ToString ());
|
|
}
|
|
|
|
void ThrowIfBufferNull (byte[] buffer)
|
|
{
|
|
if (buffer == null)
|
|
throw new ArgumentNullException ("buffer");
|
|
}
|
|
|
|
void ThrowIfBufferOutOfRange (byte[] buffer, int offset, int size)
|
|
{
|
|
if (offset < 0)
|
|
throw new ArgumentOutOfRangeException ("offset", "offset must be >= 0");
|
|
if (offset > buffer.Length)
|
|
throw new ArgumentOutOfRangeException ("offset", "offset must be <= buffer.Length");
|
|
if (size < 0)
|
|
throw new ArgumentOutOfRangeException ("size", "size must be >= 0");
|
|
if (size > buffer.Length - offset)
|
|
throw new ArgumentOutOfRangeException ("size", "size must be <= buffer.Length - offset");
|
|
}
|
|
|
|
void ThrowIfUdp ()
|
|
{
|
|
if (protocolType == ProtocolType.Udp)
|
|
throw new SocketException ((int)SocketError.ProtocolOption);
|
|
}
|
|
|
|
SocketAsyncResult ValidateEndIAsyncResult (IAsyncResult ares, string methodName, string argName)
|
|
{
|
|
if (ares == null)
|
|
throw new ArgumentNullException (argName);
|
|
|
|
SocketAsyncResult sockares = ares as SocketAsyncResult;
|
|
if (sockares == null)
|
|
throw new ArgumentException ("Invalid IAsyncResult", argName);
|
|
if (Interlocked.CompareExchange (ref sockares.EndCalled, 1, 0) == 1)
|
|
throw new InvalidOperationException (methodName + " can only be called once per asynchronous operation");
|
|
|
|
return sockares;
|
|
}
|
|
|
|
void QueueIOSelectorJob (SemaphoreSlim sem, IntPtr handle, IOSelectorJob job)
|
|
{
|
|
var task = sem.WaitAsync();
|
|
// fast path without Task<Action> allocation.
|
|
if (task.IsCompleted) {
|
|
if (CleanedUp) {
|
|
job.MarkDisposed ();
|
|
return;
|
|
}
|
|
IOSelector.Add (handle, job);
|
|
}
|
|
else
|
|
{
|
|
task.ContinueWith( t => {
|
|
if (CleanedUp) {
|
|
job.MarkDisposed ();
|
|
return;
|
|
}
|
|
IOSelector.Add(handle, job);
|
|
});
|
|
}
|
|
}
|
|
|
|
void InitSocketAsyncEventArgs (SocketAsyncEventArgs e, AsyncCallback callback, object state, SocketOperation operation)
|
|
{
|
|
e.socket_async_result.Init (this, callback, state, operation);
|
|
if (e.AcceptSocket != null) {
|
|
e.socket_async_result.AcceptSocket = e.AcceptSocket;
|
|
}
|
|
e.current_socket = this;
|
|
e.SetLastOperation (SocketOperationToSocketAsyncOperation (operation));
|
|
e.SocketError = SocketError.Success;
|
|
e.BytesTransferred = 0;
|
|
}
|
|
|
|
SocketAsyncOperation SocketOperationToSocketAsyncOperation (SocketOperation op)
|
|
{
|
|
switch (op) {
|
|
case SocketOperation.Connect:
|
|
return SocketAsyncOperation.Connect;
|
|
case SocketOperation.Accept:
|
|
return SocketAsyncOperation.Accept;
|
|
case SocketOperation.Disconnect:
|
|
return SocketAsyncOperation.Disconnect;
|
|
case SocketOperation.Receive:
|
|
case SocketOperation.ReceiveGeneric:
|
|
return SocketAsyncOperation.Receive;
|
|
case SocketOperation.ReceiveFrom:
|
|
return SocketAsyncOperation.ReceiveFrom;
|
|
case SocketOperation.Send:
|
|
case SocketOperation.SendGeneric:
|
|
return SocketAsyncOperation.Send;
|
|
case SocketOperation.SendTo:
|
|
return SocketAsyncOperation.SendTo;
|
|
default:
|
|
throw new NotImplementedException (String.Format ("Operation {0} is not implemented", op));
|
|
}
|
|
}
|
|
|
|
IPEndPoint RemapIPEndPoint (IPEndPoint input) {
|
|
// If socket is DualMode ensure we automatically handle mapping IPv4 addresses to IPv6.
|
|
if (IsDualMode && input.AddressFamily == AddressFamily.InterNetwork)
|
|
return new IPEndPoint (input.Address.MapToIPv6 (), input.Port);
|
|
|
|
return input;
|
|
}
|
|
|
|
[StructLayout (LayoutKind.Sequential)]
|
|
struct WSABUF {
|
|
public int len;
|
|
public IntPtr buf;
|
|
}
|
|
|
|
[MethodImplAttribute(MethodImplOptions.InternalCall)]
|
|
internal static extern void cancel_blocking_socket_operation (Thread thread);
|
|
|
|
[MethodImplAttribute(MethodImplOptions.InternalCall)]
|
|
internal static extern bool SupportsPortReuse (ProtocolType proto);
|
|
|
|
internal static int FamilyHint {
|
|
get {
|
|
// Returns one of
|
|
// MONO_HINT_UNSPECIFIED = 0,
|
|
// MONO_HINT_IPV4 = 1,
|
|
// MONO_HINT_IPV6 = 2,
|
|
|
|
int hint = 0;
|
|
if (OSSupportsIPv4) {
|
|
hint = 1;
|
|
}
|
|
|
|
if (OSSupportsIPv6) {
|
|
hint = hint == 0 ? 2 : 0;
|
|
}
|
|
|
|
return hint;
|
|
}
|
|
}
|
|
|
|
static bool IsProtocolSupported (NetworkInterfaceComponent networkInterface)
|
|
{
|
|
#if MOBILE
|
|
return true;
|
|
#else
|
|
var nics = NetworkInterface.GetAllNetworkInterfaces ();
|
|
foreach (var adapter in nics) {
|
|
if (adapter.Supports (networkInterface))
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
|