/mcs/class/System/System.Net.Sockets/Socket.cs
C# | 2109 lines | 1555 code | 410 blank | 144 comment | 593 complexity | 87ca90f5f76a7bee9778de59b6da23bd MD5 | raw file
Possible License(s): Unlicense, Apache-2.0, LGPL-2.0, MPL-2.0-no-copyleft-exception, CC-BY-SA-3.0, GPL-2.0
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- // System.Net.Sockets.Socket.cs
- //
- // Authors:
- // Phillip Pearson (pp@myelin.co.nz)
- // Dick Porter <dick@ximian.com>
- // Gonzalo Paniagua Javier (gonzalo@ximian.com)
- // Sridhar Kulkarni (sridharkulkarni@gmail.com)
- // Brian Nickel (brian.nickel@gmail.com)
- //
- // Copyright (C) 2001, 2002 Phillip Pearson and Ximian, Inc.
- // http://www.myelin.co.nz
- // (c) 2004-2011 Novell, Inc. (http://www.novell.com)
- //
- //
- // Permission is hereby granted, free of charge, to any person obtaining
- // a copy of this software and associated documentation files (the
- // "Software"), to deal in the Software without restriction, including
- // without limitation the rights to use, copy, modify, merge, publish,
- // distribute, sublicense, and/or sell copies of the Software, and to
- // permit persons to whom the Software is furnished to do so, subject to
- // the following conditions:
- //
- // The above copyright notice and this permission notice shall be
- // included in all copies or substantial portions of the Software.
- //
- // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
- // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
- // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
- // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- //
- using System;
- using System.Net;
- using System.Collections;
- using System.Collections.Generic;
- using System.Runtime.CompilerServices;
- using System.Runtime.InteropServices;
- using System.Threading;
- using System.Reflection;
- using System.IO;
- using System.Net.Configuration;
- using System.Text;
- using System.Timers;
- using System.Net.NetworkInformation;
- namespace System.Net.Sockets
- {
- public partial class Socket : IDisposable
- {
- private bool islistening;
- private bool useoverlappedIO;
- private const int SOCKET_CLOSED = 10004;
- static void AddSockets (List<Socket> sockets, IList list, string name)
- {
- if (list != null) {
- foreach (Socket sock in list) {
- if (sock == null) // MS throws a NullRef
- throw new ArgumentNullException ("name", "Contains a null element");
- sockets.Add (sock);
- }
- }
- sockets.Add (null);
- }
- #if !TARGET_JVM
- [MethodImplAttribute(MethodImplOptions.InternalCall)]
- private extern static void Select_internal (ref Socket [] sockets,
- int microSeconds,
- out int error);
- #endif
- public static void Select (IList checkRead, IList checkWrite, IList checkError, int microSeconds)
- {
- var list = new List<Socket> ();
- AddSockets (list, checkRead, "checkRead");
- AddSockets (list, checkWrite, "checkWrite");
- AddSockets (list, checkError, "checkError");
- if (list.Count == 3) {
- throw new ArgumentNullException ("checkRead, checkWrite, checkError",
- "All the lists are null or empty.");
- }
- int error;
- /*
- * The 'sockets' array contains: READ socket 0-n, null,
- * WRITE socket 0-n, null,
- * ERROR socket 0-n, null
- */
- Socket [] sockets = list.ToArray ();
- Select_internal (ref sockets, microSeconds, out error);
- if (error != 0)
- throw new SocketException (error);
- if (sockets == null) {
- if (checkRead != null)
- checkRead.Clear ();
- if (checkWrite != null)
- checkWrite.Clear ();
- if (checkError != null)
- checkError.Clear ();
- return;
- }
- int mode = 0;
- int count = sockets.Length;
- IList currentList = checkRead;
- int currentIdx = 0;
- for (int i = 0; i < count; i++) {
- Socket sock = sockets [i];
- if (sock == null) { // separator
- if (currentList != null) {
- // Remove non-signaled sockets after the current one
- int to_remove = currentList.Count - currentIdx;
- for (int k = 0; k < to_remove; k++)
- currentList.RemoveAt (currentIdx);
- }
- currentList = (mode == 0) ? checkWrite : checkError;
- currentIdx = 0;
- mode++;
- continue;
- }
- if (mode == 1 && currentList == checkWrite && !sock.connected) {
- if ((int) sock.GetSocketOption (SocketOptionLevel.Socket, SocketOptionName.Error) == 0)
- sock.connected = true;
- }
- // Remove non-signaled sockets before the current one
- //int max = currentList.Count;
- while (((Socket) currentList [currentIdx]) != sock) {
- currentList.RemoveAt (currentIdx);
- }
- currentIdx++;
- }
- }
- // private constructor used by Accept, which already
- // has a socket handle to use
- internal Socket(AddressFamily family, SocketType type,
- ProtocolType proto, IntPtr sock)
- {
- address_family=family;
- socket_type=type;
- protocol_type=proto;
-
- socket=sock;
- connected=true;
- }
- private void SocketDefaults ()
- {
- try {
- if (address_family == AddressFamily.InterNetwork /* Need to test IPv6 further ||
- address_family == AddressFamily.InterNetworkV6 */) {
- /* This is the default, but it
- * probably has nasty side
- * effects on Linux, as the
- * socket option is kludged by
- * turning on or off PMTU
- * discovery...
- */
- this.DontFragment = false;
- }
- //
- // Microsoft sets these to 8192, but we are going to keep them
- // both to the OS defaults as these have a big performance impact.
- // on WebClient performance.
- //
- //this.ReceiveBufferSize = 8192;
- //this.SendBufferSize = 8192;
- } catch (SocketException) {
- }
- }
- #if !MOBILE
- public Socket (SocketInformation socketInformation)
- {
- var options = socketInformation.Options;
- islistening = (options & SocketInformationOptions.Listening) != 0;
- connected = (options & SocketInformationOptions.Connected) != 0;
- blocking = (options & SocketInformationOptions.NonBlocking) == 0;
- useoverlappedIO = (options & SocketInformationOptions.UseOnlyOverlappedIO) != 0;
- var result = Mono.DataConverter.Unpack ("iiiil", socketInformation.ProtocolInformation, 0);
-
- address_family = (AddressFamily) (int) result [0];
- socket_type = (SocketType) (int) result [1];
- protocol_type = (ProtocolType) (int) result [2];
- isbound = (ProtocolType) (int) result [3] != 0;
- socket = (IntPtr) (long) result [4];
- SocketDefaults ();
- }
- #endif
-
- #if !TARGET_JVM
- // Returns the amount of data waiting to be read on socket
- [MethodImplAttribute(MethodImplOptions.InternalCall)]
- private extern static int Available_internal(IntPtr socket, out int error);
- #endif
- public int Available {
- get {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- int ret, error;
-
- ret = Available_internal(socket, out error);
- if (error != 0)
- throw new SocketException (error);
- return(ret);
- }
- }
- public bool DontFragment {
- get {
- if (disposed && closed) {
- throw new ObjectDisposedException (GetType ().ToString ());
- }
- bool dontfragment;
-
- if (address_family == AddressFamily.InterNetwork) {
- dontfragment = (int)(GetSocketOption (SocketOptionLevel.IP, SocketOptionName.DontFragment)) != 0;
- } else if (address_family == AddressFamily.InterNetworkV6) {
- dontfragment = (int)(GetSocketOption (SocketOptionLevel.IPv6, SocketOptionName.DontFragment)) != 0;
- } else {
- throw new NotSupportedException ("This property is only valid for InterNetwork and InterNetworkV6 sockets");
- }
-
- return(dontfragment);
- }
- set {
- if (disposed && closed) {
- throw new ObjectDisposedException (GetType ().ToString ());
- }
- if (address_family == AddressFamily.InterNetwork) {
- SetSocketOption (SocketOptionLevel.IP, SocketOptionName.DontFragment, value?1:0);
- } else if (address_family == AddressFamily.InterNetworkV6) {
- SetSocketOption (SocketOptionLevel.IPv6, SocketOptionName.DontFragment, value?1:0);
- } else {
- throw new NotSupportedException ("This property is only valid for InterNetwork and InterNetworkV6 sockets");
- }
- }
- }
- public bool EnableBroadcast {
- get {
- if (disposed && closed) {
- throw new ObjectDisposedException (GetType ().ToString ());
- }
- if (protocol_type != ProtocolType.Udp) {
- throw new SocketException ((int)SocketError.ProtocolOption);
- }
-
- return((int)(GetSocketOption (SocketOptionLevel.Socket, SocketOptionName.Broadcast)) != 0);
- }
- set {
- if (disposed && closed) {
- throw new ObjectDisposedException (GetType ().ToString ());
- }
- if (protocol_type != ProtocolType.Udp) {
- throw new SocketException ((int)SocketError.ProtocolOption);
- }
- SetSocketOption (SocketOptionLevel.Socket, SocketOptionName.Broadcast, value?1:0);
- }
- }
-
- public bool ExclusiveAddressUse {
- get {
- if (disposed && closed) {
- throw new ObjectDisposedException (GetType ().ToString ());
- }
- return((int)(GetSocketOption (SocketOptionLevel.Socket, SocketOptionName.ExclusiveAddressUse)) != 0);
- }
- set {
- if (disposed && closed) {
- throw new ObjectDisposedException (GetType ().ToString ());
- }
- if (isbound) {
- throw new InvalidOperationException ("Bind has already been called for this socket");
- }
-
- SetSocketOption (SocketOptionLevel.Socket, SocketOptionName.ExclusiveAddressUse, value?1:0);
- }
- }
-
- public bool IsBound {
- get {
- return(isbound);
- }
- }
-
- public LingerOption LingerState {
- get {
- if (disposed && closed) {
- throw new ObjectDisposedException (GetType ().ToString ());
- }
- return((LingerOption)GetSocketOption (SocketOptionLevel.Socket, SocketOptionName.Linger));
- }
- set {
- if (disposed && closed) {
- throw new ObjectDisposedException (GetType ().ToString ());
- }
-
- SetSocketOption (SocketOptionLevel.Socket,
- SocketOptionName.Linger,
- value);
- }
- }
-
- public bool MulticastLoopback {
- get {
- if (disposed && closed) {
- throw new ObjectDisposedException (GetType ().ToString ());
- }
- /* Even though this option can be set
- * for TCP sockets on Linux, throw
- * this exception anyway to be
- * compatible (the MSDN docs say
- * "Setting this property on a
- * Transmission Control Protocol (TCP)
- * socket will have no effect." but
- * the MS runtime throws the
- * exception...)
- */
- if (protocol_type == ProtocolType.Tcp) {
- throw new SocketException ((int)SocketError.ProtocolOption);
- }
-
- bool multicastloopback;
-
- if (address_family == AddressFamily.InterNetwork) {
- multicastloopback = (int)(GetSocketOption (SocketOptionLevel.IP, SocketOptionName.MulticastLoopback)) != 0;
- } else if (address_family == AddressFamily.InterNetworkV6) {
- multicastloopback = (int)(GetSocketOption (SocketOptionLevel.IPv6, SocketOptionName.MulticastLoopback)) != 0;
- } else {
- throw new NotSupportedException ("This property is only valid for InterNetwork and InterNetworkV6 sockets");
- }
-
- return(multicastloopback);
- }
- set {
- if (disposed && closed) {
- throw new ObjectDisposedException (GetType ().ToString ());
- }
- /* Even though this option can be set
- * for TCP sockets on Linux, throw
- * this exception anyway to be
- * compatible (the MSDN docs say
- * "Setting this property on a
- * Transmission Control Protocol (TCP)
- * socket will have no effect." but
- * the MS runtime throws the
- * exception...)
- */
- if (protocol_type == ProtocolType.Tcp) {
- throw new SocketException ((int)SocketError.ProtocolOption);
- }
-
- if (address_family == AddressFamily.InterNetwork) {
- SetSocketOption (SocketOptionLevel.IP, SocketOptionName.MulticastLoopback, value?1:0);
- } else if (address_family == AddressFamily.InterNetworkV6) {
- SetSocketOption (SocketOptionLevel.IPv6, SocketOptionName.MulticastLoopback, value?1:0);
- } else {
- throw new NotSupportedException ("This property is only valid for InterNetwork and InterNetworkV6 sockets");
- }
- }
- }
-
-
- [MonoTODO ("This doesn't do anything on Mono yet")]
- public bool UseOnlyOverlappedIO {
- get {
- return(useoverlappedIO);
- }
- set {
- useoverlappedIO = value;
- }
- }
- public IntPtr Handle {
- get {
- return(socket);
- }
- }
- #if !TARGET_JVM
- // Returns the local endpoint details in addr and port
- [MethodImplAttribute(MethodImplOptions.InternalCall)]
- private extern static SocketAddress LocalEndPoint_internal(IntPtr socket, int family, out int error);
- #endif
- // Wish: support non-IP endpoints.
- public EndPoint LocalEndPoint {
- get {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
-
- /*
- * If the seed EndPoint is null, Connect, Bind,
- * etc has not yet been called. MS returns null
- * in this case.
- */
- if (seed_endpoint == null)
- return null;
-
- SocketAddress sa;
- int error;
-
- sa=LocalEndPoint_internal(socket, (int) address_family, out error);
- if (error != 0)
- throw new SocketException (error);
- return seed_endpoint.Create (sa);
- }
- }
- public SocketType SocketType {
- get {
- return(socket_type);
- }
- }
- public int SendTimeout {
- get {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- return (int)GetSocketOption(
- SocketOptionLevel.Socket,
- SocketOptionName.SendTimeout);
- }
- set {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- if (value < -1)
- throw new ArgumentOutOfRangeException ("value", "The value specified for a set operation is less than -1");
- /* According to the MSDN docs we
- * should adjust values between 1 and
- * 499 to 500, but the MS runtime
- * doesn't do this.
- */
- if (value == -1)
- value = 0;
- SetSocketOption(
- SocketOptionLevel.Socket,
- SocketOptionName.SendTimeout, value);
- }
- }
- public int ReceiveTimeout {
- get {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- return (int)GetSocketOption(
- SocketOptionLevel.Socket,
- SocketOptionName.ReceiveTimeout);
- }
- set {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- if (value < -1)
- throw new ArgumentOutOfRangeException ("value", "The value specified for a set operation is less than -1");
- if (value == -1) {
- value = 0;
- }
-
- SetSocketOption(
- SocketOptionLevel.Socket,
- SocketOptionName.ReceiveTimeout, value);
- }
- }
- public bool AcceptAsync (SocketAsyncEventArgs e)
- {
- // NO check is made whether e != null in MS.NET (NRE is thrown in such case)
-
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- if (!IsBound)
- throw new InvalidOperationException ("You must call the Bind method before performing this operation.");
- if (!islistening)
- 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.IsBound || acceptSocket.Connected)
- throw new InvalidOperationException ("AcceptSocket: The socket must not be bound or connected.");
- }
- e.curSocket = this;
- Worker w = e.Worker;
- w.Init (this, e, SocketOperation.Accept);
- int count;
- lock (readQ) {
- readQ.Enqueue (e.Worker);
- count = readQ.Count;
- }
- if (count == 1)
- socket_pool_queue (Worker.Dispatcher, w.result);
- return true;
- }
- // Creates a new system socket, returning the handle
- [MethodImplAttribute(MethodImplOptions.InternalCall)]
- private extern static IntPtr Accept_internal(IntPtr sock, out int error, bool blocking);
- public Socket Accept() {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- int error = 0;
- IntPtr sock = (IntPtr) (-1);
- try {
- RegisterForBlockingSyscall ();
- sock = Accept_internal(socket, out error, blocking);
- } finally {
- UnRegisterForBlockingSyscall ();
- }
- if (error != 0) {
- if (closed)
- error = SOCKET_CLOSED;
- throw new SocketException(error);
- }
- Socket accepted = new Socket(this.AddressFamily, this.SocketType,
- this.ProtocolType, sock);
- accepted.seed_endpoint = this.seed_endpoint;
- accepted.Blocking = this.Blocking;
- return(accepted);
- }
- internal void Accept (Socket acceptSocket)
- {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
-
- int error = 0;
- IntPtr sock = (IntPtr)(-1);
-
- try {
- RegisterForBlockingSyscall ();
- sock = Accept_internal (socket, out error, blocking);
- } finally {
- UnRegisterForBlockingSyscall ();
- }
-
- if (error != 0) {
- if (closed)
- error = SOCKET_CLOSED;
- throw new SocketException (error);
- }
-
- acceptSocket.address_family = this.AddressFamily;
- acceptSocket.socket_type = this.SocketType;
- acceptSocket.protocol_type = this.ProtocolType;
- acceptSocket.socket = sock;
- acceptSocket.connected = true;
- acceptSocket.seed_endpoint = this.seed_endpoint;
- acceptSocket.Blocking = this.Blocking;
- /* FIXME: figure out what if anything else
- * needs to be reset
- */
- }
- public IAsyncResult BeginAccept(AsyncCallback callback, object state)
- {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- if (!isbound || !islistening)
- throw new InvalidOperationException ();
- SocketAsyncResult req = new SocketAsyncResult (this, state, callback, SocketOperation.Accept);
- int count;
- lock (readQ) {
- readQ.Enqueue (req.Worker);
- count = readQ.Count;
- }
- if (count == 1)
- socket_pool_queue (Worker.Dispatcher, req);
- return req;
- }
- public IAsyncResult BeginAccept (int receiveSize,
- AsyncCallback callback,
- object state)
- {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- if (receiveSize < 0)
- throw new ArgumentOutOfRangeException ("receiveSize", "receiveSize is less than zero");
- SocketAsyncResult req = new SocketAsyncResult (this, state, callback, SocketOperation.AcceptReceive);
- req.Buffer = new byte[receiveSize];
- req.Offset = 0;
- req.Size = receiveSize;
- req.SockFlags = SocketFlags.None;
- int count;
- lock (readQ) {
- readQ.Enqueue (req.Worker);
- count = readQ.Count;
- }
- if (count == 1)
- socket_pool_queue (Worker.Dispatcher, req);
- return req;
- }
- public IAsyncResult BeginAccept (Socket acceptSocket,
- int receiveSize,
- AsyncCallback callback,
- object state)
- {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- if (receiveSize < 0)
- throw new ArgumentOutOfRangeException ("receiveSize", "receiveSize is less than zero");
- if (acceptSocket != null) {
- if (acceptSocket.disposed && acceptSocket.closed)
- throw new ObjectDisposedException (acceptSocket.GetType ().ToString ());
- 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 req = new SocketAsyncResult (this, state, callback, SocketOperation.AcceptReceive);
- req.Buffer = new byte[receiveSize];
- req.Offset = 0;
- req.Size = receiveSize;
- req.SockFlags = SocketFlags.None;
- req.AcceptSocket = acceptSocket;
- int count;
- lock (readQ) {
- readQ.Enqueue (req.Worker);
- count = readQ.Count;
- }
- if (count == 1)
- socket_pool_queue (Worker.Dispatcher, req);
- return(req);
- }
- public IAsyncResult BeginConnect (IPAddress address, int port,
- AsyncCallback callback,
- object state)
- {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- if (address == null)
- throw new ArgumentNullException ("address");
- if (address.ToString ().Length == 0)
- throw new ArgumentException ("The length of the IP address is zero");
- if (port <= 0 || port > 65535)
- throw new ArgumentOutOfRangeException ("port", "Must be > 0 and < 65536");
- if (islistening)
- throw new InvalidOperationException ();
- IPEndPoint iep = new IPEndPoint (address, port);
- return(BeginConnect (iep, callback, state));
- }
- public IAsyncResult BeginConnect (string host, int port,
- AsyncCallback callback,
- object state)
- {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- if (host == null)
- throw new ArgumentNullException ("host");
- if (address_family != AddressFamily.InterNetwork &&
- address_family != 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 (islistening)
- throw new InvalidOperationException ();
- return BeginConnect (Dns.GetHostAddresses (host), port, callback, state);
- }
- public IAsyncResult BeginDisconnect (bool reuseSocket,
- AsyncCallback callback,
- object state)
- {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- SocketAsyncResult req = new SocketAsyncResult (this, state, callback, SocketOperation.Disconnect);
- req.ReuseSocket = reuseSocket;
- socket_pool_queue (Worker.Dispatcher, req);
- return(req);
- }
- void CheckRange (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");
- }
-
- public IAsyncResult BeginReceive(byte[] buffer, int offset,
- int size,
- SocketFlags socket_flags,
- AsyncCallback callback,
- object state) {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- if (buffer == null)
- throw new ArgumentNullException ("buffer");
- CheckRange (buffer, offset, size);
- SocketAsyncResult req = new SocketAsyncResult (this, state, callback, SocketOperation.Receive);
- req.Buffer = buffer;
- req.Offset = offset;
- req.Size = size;
- req.SockFlags = socket_flags;
- int count;
- lock (readQ) {
- readQ.Enqueue (req.Worker);
- count = readQ.Count;
- }
- if (count == 1)
- socket_pool_queue (Worker.Dispatcher, req);
- return req;
- }
- public IAsyncResult BeginReceive (byte[] buffer, int offset,
- int size, SocketFlags flags,
- out SocketError error,
- AsyncCallback callback,
- object state)
- {
- /* 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.
- */
- error = SocketError.Success;
- return (BeginReceive (buffer, offset, size, flags, callback, state));
- }
- [CLSCompliant (false)]
- public IAsyncResult BeginReceive (IList<ArraySegment<byte>> buffers,
- SocketFlags socketFlags,
- AsyncCallback callback,
- object state)
- {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- if (buffers == null)
- throw new ArgumentNullException ("buffers");
- SocketAsyncResult req = new SocketAsyncResult (this, state, callback, SocketOperation.ReceiveGeneric);
- req.Buffers = buffers;
- req.SockFlags = socketFlags;
- int count;
- lock(readQ) {
- readQ.Enqueue (req.Worker);
- count = readQ.Count;
- }
- if (count == 1)
- socket_pool_queue (Worker.Dispatcher, req);
- return req;
- }
-
- [CLSCompliant (false)]
- public IAsyncResult BeginReceive (IList<ArraySegment<byte>> buffers,
- SocketFlags socketFlags,
- out SocketError errorCode,
- AsyncCallback callback,
- object state)
- {
- /* I assume the same SocketError semantics as
- * above
- */
- errorCode = SocketError.Success;
- return (BeginReceive (buffers, socketFlags, callback, state));
- }
- public IAsyncResult BeginReceiveFrom(byte[] buffer, int offset,
- int size,
- SocketFlags socket_flags,
- ref EndPoint remote_end,
- AsyncCallback callback,
- object state) {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- if (buffer == null)
- throw new ArgumentNullException ("buffer");
- if (remote_end == null)
- throw new ArgumentNullException ("remote_end");
- CheckRange (buffer, offset, size);
- SocketAsyncResult req = new SocketAsyncResult (this, state, callback, SocketOperation.ReceiveFrom);
- req.Buffer = buffer;
- req.Offset = offset;
- req.Size = size;
- req.SockFlags = socket_flags;
- req.EndPoint = remote_end;
- int count;
- lock (readQ) {
- readQ.Enqueue (req.Worker);
- count = readQ.Count;
- }
- if (count == 1)
- socket_pool_queue (Worker.Dispatcher, req);
- return req;
- }
- [MonoTODO]
- public IAsyncResult BeginReceiveMessageFrom (
- byte[] buffer, int offset, int size,
- SocketFlags socketFlags, ref EndPoint remoteEP,
- AsyncCallback callback, object state)
- {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- if (buffer == null)
- throw new ArgumentNullException ("buffer");
- if (remoteEP == null)
- throw new ArgumentNullException ("remoteEP");
- CheckRange (buffer, offset, size);
- throw new NotImplementedException ();
- }
- public IAsyncResult BeginSend (byte[] buffer, int offset, int size, SocketFlags socket_flags,
- AsyncCallback callback, object state)
- {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- if (buffer == null)
- throw new ArgumentNullException ("buffer");
- CheckRange (buffer, offset, size);
- if (!connected)
- throw new SocketException ((int)SocketError.NotConnected);
- SocketAsyncResult req = new SocketAsyncResult (this, state, callback, SocketOperation.Send);
- req.Buffer = buffer;
- req.Offset = offset;
- req.Size = size;
- req.SockFlags = socket_flags;
- int count;
- lock (writeQ) {
- writeQ.Enqueue (req.Worker);
- count = writeQ.Count;
- }
- if (count == 1)
- socket_pool_queue (Worker.Dispatcher, req);
- return req;
- }
- public IAsyncResult BeginSend (byte[] buffer, int offset,
- int size,
- SocketFlags socketFlags,
- out SocketError errorCode,
- AsyncCallback callback,
- object state)
- {
- if (!connected) {
- errorCode = SocketError.NotConnected;
- throw new SocketException ((int)errorCode);
- }
-
- errorCode = SocketError.Success;
-
- return (BeginSend (buffer, offset, size, socketFlags, callback,
- state));
- }
- public IAsyncResult BeginSend (IList<ArraySegment<byte>> buffers,
- SocketFlags socketFlags,
- AsyncCallback callback,
- object state)
- {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- if (buffers == null)
- throw new ArgumentNullException ("buffers");
- if (!connected)
- throw new SocketException ((int)SocketError.NotConnected);
- SocketAsyncResult req = new SocketAsyncResult (this, state, callback, SocketOperation.SendGeneric);
- req.Buffers = buffers;
- req.SockFlags = socketFlags;
- int count;
- lock (writeQ) {
- writeQ.Enqueue (req.Worker);
- count = writeQ.Count;
- }
- if (count == 1)
- socket_pool_queue (Worker.Dispatcher, req);
- return req;
- }
- [CLSCompliant (false)]
- public IAsyncResult BeginSend (IList<ArraySegment<byte>> buffers,
- SocketFlags socketFlags,
- out SocketError errorCode,
- AsyncCallback callback,
- object state)
- {
- if (!connected) {
- errorCode = SocketError.NotConnected;
- throw new SocketException ((int)errorCode);
- }
-
- errorCode = SocketError.Success;
- return (BeginSend (buffers, socketFlags, callback, state));
- }
- 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; }
- }
- }
- public IAsyncResult BeginSendFile (string fileName,
- AsyncCallback callback,
- object state)
- {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- if (!connected)
- throw new NotSupportedException ();
- if (!File.Exists (fileName))
- throw new FileNotFoundException ();
- return BeginSendFile (fileName, null, null, 0, callback, state);
- }
- public IAsyncResult BeginSendFile (string fileName,
- byte[] preBuffer,
- byte[] postBuffer,
- TransmitFileOptions flags,
- AsyncCallback callback,
- object state)
- {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- if (!connected)
- throw new NotSupportedException ();
- if (!File.Exists (fileName))
- throw new FileNotFoundException ();
- SendFileHandler d = new SendFileHandler (SendFile);
- return new SendFileAsyncResult (d, d.BeginInvoke (fileName, preBuffer, postBuffer, flags, ar => {
- SendFileAsyncResult sfar = new SendFileAsyncResult (d, ar);
- callback (sfar);
- }, state));
- }
- public IAsyncResult BeginSendTo(byte[] buffer, int offset,
- int size,
- SocketFlags socket_flags,
- EndPoint remote_end,
- AsyncCallback callback,
- object state) {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- if (buffer == null)
- throw new ArgumentNullException ("buffer");
- CheckRange (buffer, offset, size);
- SocketAsyncResult req = new SocketAsyncResult (this, state, callback, SocketOperation.SendTo);
- req.Buffer = buffer;
- req.Offset = offset;
- req.Size = size;
- req.SockFlags = socket_flags;
- req.EndPoint = remote_end;
- int count;
- lock (writeQ) {
- writeQ.Enqueue (req.Worker);
- count = writeQ.Count;
- }
- if (count == 1)
- socket_pool_queue (Worker.Dispatcher, req);
- return req;
- }
- // Creates a new system socket, returning the handle
- [MethodImplAttribute(MethodImplOptions.InternalCall)]
- private extern static void Bind_internal(IntPtr sock,
- SocketAddress sa,
- out int error);
- public void Bind(EndPoint local_end) {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- if (local_end == null)
- throw new ArgumentNullException("local_end");
-
- int error;
-
- Bind_internal(socket, local_end.Serialize(), out error);
- if (error != 0)
- throw new SocketException (error);
- if (error == 0)
- isbound = true;
-
- seed_endpoint = local_end;
- }
- public void Connect (IPAddress address, int port)
- {
- Connect (new IPEndPoint (address, port));
- }
-
- public void Connect (IPAddress[] addresses, int port)
- {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- if (addresses == null)
- throw new ArgumentNullException ("addresses");
- 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 (islistening)
- throw new InvalidOperationException ();
- /* FIXME: do non-blocking sockets Poll here? */
- int error = 0;
- foreach (IPAddress address in addresses) {
- IPEndPoint iep = new IPEndPoint (address, port);
- SocketAddress serial = iep.Serialize ();
-
- Connect_internal (socket, serial, out error);
- if (error == 0) {
- connected = true;
- isbound = true;
- seed_endpoint = iep;
- return;
- } else if (error != (int)SocketError.InProgress &&
- error != (int)SocketError.WouldBlock) {
- continue;
- }
-
- if (!blocking) {
- Poll (-1, SelectMode.SelectWrite);
- error = (int)GetSocketOption (SocketOptionLevel.Socket, SocketOptionName.Error);
- if (error == 0) {
- connected = true;
- isbound = true;
- seed_endpoint = iep;
- return;
- }
- }
- }
- if (error != 0)
- throw new SocketException (error);
- }
- public void Connect (string host, int port)
- {
- IPAddress [] addresses = Dns.GetHostAddresses (host);
- Connect (addresses, port);
- }
- public bool DisconnectAsync (SocketAsyncEventArgs e)
- {
- // NO check is made whether e != null in MS.NET (NRE is thrown in such case)
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- e.curSocket = this;
- e.Worker.Init (this, e, SocketOperation.Disconnect);
- socket_pool_queue (Worker.Dispatcher, e.Worker.result);
- return true;
- }
- [MethodImplAttribute(MethodImplOptions.InternalCall)]
- extern static void Disconnect_internal(IntPtr sock, bool reuse, out int error);
- /* 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)
- {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- int error = 0;
-
- Disconnect_internal (socket, reuseSocket, out error);
- if (error != 0) {
- if (error == 50) {
- /* ERROR_NOT_SUPPORTED */
- throw new PlatformNotSupportedException ();
- } else {
- throw new SocketException (error);
- }
- }
- connected = false;
-
- if (reuseSocket) {
- /* Do managed housekeeping here... */
- }
- }
- #if !MOBILE
- [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 =
- (islistening ? SocketInformationOptions.Listening : 0) |
- (connected ? SocketInformationOptions.Connected : 0) |
- (blocking ? 0 : SocketInformationOptions.NonBlocking) |
- (useoverlappedIO ? SocketInformationOptions.UseOnlyOverlappedIO : 0);
- si.ProtocolInformation = Mono.DataConverter.Pack ("iiiil", (int)address_family, (int)socket_type, (int)protocol_type, isbound ? 1 : 0, (long)socket);
- socket = (IntPtr) (-1);
- return si;
- }
- #endif
-
- public Socket EndAccept (IAsyncResult result)
- {
- int bytes;
- byte[] buffer;
-
- return(EndAccept (out buffer, out bytes, result));
- }
- public Socket EndAccept (out byte[] buffer, IAsyncResult asyncResult)
- {
- int bytes;
- return(EndAccept (out buffer, out bytes, asyncResult));
- }
- public Socket EndAccept (out byte[] buffer, out int bytesTransferred, IAsyncResult asyncResult)
- {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- if (asyncResult == null)
- throw new ArgumentNullException ("asyncResult");
-
- SocketAsyncResult req = asyncResult as SocketAsyncResult;
- if (req == null)
- throw new ArgumentException ("Invalid IAsyncResult", "asyncResult");
- if (Interlocked.CompareExchange (ref req.EndCalled, 1, 0) == 1)
- throw InvalidAsyncOp ("EndAccept");
- if (!asyncResult.IsCompleted)
- asyncResult.AsyncWaitHandle.WaitOne ();
- req.CheckIfThrowDelayedException ();
-
- buffer = req.Buffer;
- bytesTransferred = req.Total;
-
- return(req.Socket);
- }
- public void EndConnect (IAsyncResult result)
- {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- if (result == null)
- throw new ArgumentNullException ("result");
- SocketAsyncResult req = result as SocketAsyncResult;
- if (req == null)
- throw new ArgumentException ("Invalid IAsyncResult", "result");
- if (Interlocked.CompareExchange (ref req.EndCalled, 1, 0) == 1)
- throw InvalidAsyncOp ("EndConnect");
- if (!result.IsCompleted)
- result.AsyncWaitHandle.WaitOne();
- req.CheckIfThrowDelayedException();
- }
- public void EndDisconnect (IAsyncResult asyncResult)
- {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- if (asyncResult == null)
- throw new ArgumentNullException ("asyncResult");
- SocketAsyncResult req = asyncResult as SocketAsyncResult;
- if (req == null)
- throw new ArgumentException ("Invalid IAsyncResult", "asyncResult");
- if (Interlocked.CompareExchange (ref req.EndCalled, 1, 0) == 1)
- throw InvalidAsyncOp ("EndDisconnect");
- if (!asyncResult.IsCompleted)
- asyncResult.AsyncWaitHandle.WaitOne ();
- req.CheckIfThrowDelayedException ();
- }
- [MonoTODO]
- public int EndReceiveMessageFrom (IAsyncResult asyncResult,
- ref SocketFlags socketFlags,
- ref EndPoint endPoint,
- out IPPacketInformation ipPacketInformation)
- {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- if (asyncResult == null)
- throw new ArgumentNullException ("asyncResult");
- if (endPoint == null)
- throw new ArgumentNullException ("endPoint");
- SocketAsyncResult req = asyncResult as SocketAsyncResult;
- if (req == null)
- throw new ArgumentException ("Invalid IAsyncResult", "asyncResult");
- if (Interlocked.CompareExchange (ref req.EndCalled, 1, 0) == 1)
- throw InvalidAsyncOp ("EndReceiveMessageFrom");
- throw new NotImplementedException ();
- }
- public void EndSendFile (IAsyncResult asyncResult)
- {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- 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);
- }
- public int EndSendTo (IAsyncResult result)
- {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- if (result == null)
- throw new ArgumentNullException ("result");
- SocketAsyncResult req = result as SocketAsyncResult;
- if (req == null)
- throw new ArgumentException ("Invalid IAsyncResult", "result");
- if (Interlocked.CompareExchange (ref req.EndCalled, 1, 0) == 1)
- throw InvalidAsyncOp ("EndSendTo");
- if (!result.IsCompleted)
- result.AsyncWaitHandle.WaitOne();
- req.CheckIfThrowDelayedException();
- return req.Total;
- }
- [MethodImplAttribute(MethodImplOptions.InternalCall)]
- private extern static void GetSocketOption_arr_internal(IntPtr socket,
- SocketOptionLevel level, SocketOptionName name, ref byte[] byte_val,
- out int error);
- public void GetSocketOption (SocketOptionLevel optionLevel, SocketOptionName optionName, byte [] optionValue)
- {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- if (optionValue == null)
- throw new SocketException ((int) SocketError.Fault,
- "Error trying to dereference an invalid pointer");
- int error;
- GetSocketOption_arr_internal (socket, optionLevel, optionName, ref optionValue,
- out error);
- if (error != 0)
- throw new SocketException (error);
- }
- public byte [] GetSocketOption (SocketOptionLevel optionLevel, SocketOptionName optionName, int length)
- {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- byte[] byte_val=new byte[length];
- int error;
- GetSocketOption_arr_internal (socket, optionLevel, optionName, ref byte_val,
- out error);
- if (error != 0)
- throw new SocketException (error);
- return(byte_val);
- }
- // 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 WSAIoctl (IntPtr sock, int ioctl_code, byte [] input,
- byte [] output, out int error);
- public int IOControl (int ioctl_code, byte [] in_value, byte [] out_value)
- {
- if (disposed)
- throw new ObjectDisposedException (GetType ().ToString ());
- int error;
- int result = WSAIoctl (socket, ioctl_code, in_value, out_value,
- out error);
- if (error != 0)
- throw new SocketException (error);
-
- if (result == -1)
- throw new InvalidOperationException ("Must use Blocking property instead.");
- return result;
- }
- public int IOControl (IOControlCode ioControlCode, byte[] optionInValue, byte[] optionOutValue)
- {
- return IOControl ((int) ioControlCode, optionInValue, optionOutValue);
- }
- [MethodImplAttribute(MethodImplOptions.InternalCall)]
- private extern static void Listen_internal(IntPtr sock, int backlog, out int error);
- public void Listen (int backlog)
- {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- if (!isbound)
- throw new SocketException ((int)SocketError.InvalidArgument);
- int error;
- Listen_internal(socket, backlog, out error);
- if (error != 0)
- throw new SocketException (error);
- islistening = true;
- }
- public bool Poll (int time_us, SelectMode mode)
- {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- if (mode != SelectMode.SelectRead &&
- mode != SelectMode.SelectWrite &&
- mode != SelectMode.SelectError)
- throw new NotSupportedException ("'mode' parameter is not valid.");
- int error;
- bool result = Poll_internal (socket, mode, time_us, out error);
- if (error != 0)
- throw new SocketException (error);
- if (mode == SelectMode.SelectWrite && result && !connected) {
- /* Update the connected state; for
- * non-blocking Connect()s this is
- * when we can find out that the
- * connect succeeded.
- */
- if ((int)GetSocketOption (SocketOptionLevel.Socket, SocketOptionName.Error) == 0) {
- connected = true;
- }
- }
-
- return result;
- }
- public int Receive (byte [] buffer)
- {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- if (buffer == null)
- throw new ArgumentNullException ("buffer");
- SocketError error;
- int ret = Receive_nochecks (buffer, 0, buffer.Length, SocketFlags.None, out error);
-
- if (error != SocketError.Success)
- throw new SocketException ((int) error);
- return ret;
- }
- public int Receive (byte [] buffer, SocketFlags flags)
- {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- if (buffer == null)
- throw new ArgumentNullException ("buffer");
- SocketError error;
- int ret = Receive_nochecks (buffer, 0, buffer.Length, flags, out error);
-
- if (error != SocketError.Success) {
- if (error == SocketError.WouldBlock && blocking) // This might happen when ReceiveTimeout is set
- throw new SocketException ((int) error, "Operation timed out.");
- throw new SocketException ((int) error);
- }
- return ret;
- }
- public int Receive (byte [] buffer, int size, SocketFlags flags)
- {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- if (buffer == null)
- throw new ArgumentNullException ("buffer");
- CheckRange (buffer, 0, size);
- SocketError error;
- int ret = Receive_nochecks (buffer, 0, size, flags, out error);
-
- if (error != SocketError.Success) {
- if (error == SocketError.WouldBlock && blocking) // This might happen when ReceiveTimeout is set
- throw new SocketException ((int) error, "Operation timed out.");
- throw new SocketException ((int) error);
- }
- return ret;
- }
- public int Receive (byte [] buffer, int offset, int size, SocketFlags flags)
- {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- if (buffer == null)
- throw new ArgumentNullException ("buffer");
- CheckRange (buffer, offset, size);
-
- SocketError error;
- int ret = Receive_nochecks (buffer, offset, size, flags, out error);
-
- if (error != SocketError.Success) {
- if (error == SocketError.WouldBlock && blocking) // This might happen when ReceiveTimeout is set
- throw new SocketException ((int) error, "Operation timed out.");
- throw new SocketException ((int) error);
- }
- return ret;
- }
- public int Receive (byte [] buffer, int offset, int size, SocketFlags flags, out SocketError error)
- {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- if (buffer == null)
- throw new ArgumentNullException ("buffer");
- CheckRange (buffer, offset, size);
-
- return Receive_nochecks (buffer, offset, size, flags, out error);
- }
- public bool ReceiveFromAsync (SocketAsyncEventArgs e)
- {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- // 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.");
- e.curSocket = this;
- e.Worker.Init (this, e, SocketOperation.ReceiveFrom);
- SocketAsyncResult res = e.Worker.result;
- res.Buffer = e.Buffer;
- res.Offset = e.Offset;
- res.Size = e.Count;
- res.EndPoint = e.RemoteEndPoint;
- res.SockFlags = e.SocketFlags;
- int count;
- lock (readQ) {
- readQ.Enqueue (e.Worker);
- count = readQ.Count;
- }
- if (count == 1)
- socket_pool_queue (Worker.Dispatcher, res);
- return true;
- }
- public int ReceiveFrom (byte [] buffer, ref EndPoint remoteEP)
- {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- if (buffer == null)
- throw new ArgumentNullException ("buffer");
- if (remoteEP == null)
- throw new ArgumentNullException ("remoteEP");
- return ReceiveFrom_nochecks (buffer, 0, buffer.Length, SocketFlags.None, ref remoteEP);
- }
- public int ReceiveFrom (byte [] buffer, SocketFlags flags, ref EndPoint remoteEP)
- {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- if (buffer == null)
- throw new ArgumentNullException ("buffer");
- if (remoteEP == null)
- throw new ArgumentNullException ("remoteEP");
- return ReceiveFrom_nochecks (buffer, 0, buffer.Length, flags, ref remoteEP);
- }
- public int ReceiveFrom (byte [] buffer, int size, SocketFlags flags,
- ref EndPoint remoteEP)
- {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- if (buffer == null)
- throw new ArgumentNullException ("buffer");
- if (remoteEP == null)
- throw new ArgumentNullException ("remoteEP");
- if (size < 0 || size > buffer.Length)
- throw new ArgumentOutOfRangeException ("size");
- return ReceiveFrom_nochecks (buffer, 0, size, flags, ref remoteEP);
- }
- [MethodImplAttribute(MethodImplOptions.InternalCall)]
- private extern static int RecvFrom_internal(IntPtr sock,
- byte[] buffer,
- int offset,
- int count,
- SocketFlags flags,
- ref SocketAddress sockaddr,
- out int error);
- public int ReceiveFrom (byte [] buffer, int offset, int size, SocketFlags flags,
- ref EndPoint remoteEP)
- {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- if (buffer == null)
- throw new ArgumentNullException ("buffer");
- if (remoteEP == null)
- throw new ArgumentNullException ("remoteEP");
- CheckRange (buffer, offset, size);
- return ReceiveFrom_nochecks (buffer, offset, size, flags, ref remoteEP);
- }
- internal int ReceiveFrom_nochecks (byte [] buf, int offset, int size, SocketFlags flags,
- ref EndPoint remote_end)
- {
- int error;
- return ReceiveFrom_nochecks_exc (buf, offset, size, flags, ref remote_end, true, out error);
- }
- internal int ReceiveFrom_nochecks_exc (byte [] buf, int offset, int size, SocketFlags flags,
- ref EndPoint remote_end, bool throwOnError, out int error)
- {
- SocketAddress sockaddr = remote_end.Serialize();
- int cnt = RecvFrom_internal (socket, buf, offset, size, flags, ref sockaddr, out error);
- SocketError err = (SocketError) error;
- if (err != 0) {
- if (err != SocketError.WouldBlock && err != SocketError.InProgress)
- connected = false;
- else if (err == SocketError.WouldBlock && blocking) { // This might happen when ReceiveTimeout is set
- if (throwO…
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