/mcs/class/System/System.Net.Sockets/Socket.cs
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Possible License(s): LGPL-2.0, MPL-2.0-no-copyleft-exception, CC-BY-SA-3.0, GPL-2.0, LGPL-2.1
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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) 2004-2006 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.Runtime.CompilerServices;
- using System.Runtime.InteropServices;
- using System.Threading;
- using System.Reflection;
- using System.IO;
- using System.Net.Configuration;
- using System.Text;
- #if NET_2_0
- using System.Collections.Generic;
- using System.Net.NetworkInformation;
- using System.Timers;
- #endif
- namespace System.Net.Sockets
- {
- public partial class Socket : IDisposable
- {
- enum SocketOperation {
- Accept,
- Connect,
- Receive,
- ReceiveFrom,
- Send,
- SendTo,
- UsedInManaged1,
- UsedInManaged2,
- UsedInProcess,
- UsedInConsole2,
- Disconnect,
- AcceptReceive,
- ReceiveGeneric,
- SendGeneric
- }
- [StructLayout (LayoutKind.Sequential)]
- struct WSABUF
- {
- public int len;
- public IntPtr buf;
- };
- [StructLayout (LayoutKind.Sequential)]
- private sealed class SocketAsyncResult: IAsyncResult
- {
- /* Same structure in the runtime */
- /*
- Keep this in sync with MonoSocketAsyncResult in
- metadata/socket-io.h and ProcessAsyncReader
- in System.Diagnostics/Process.cs.
- */
- public Socket Sock;
- public IntPtr handle;
- object state;
- AsyncCallback callback;
- WaitHandle waithandle;
- Exception delayedException;
- public EndPoint EndPoint; // Connect,ReceiveFrom,SendTo
- public byte [] Buffer; // Receive,ReceiveFrom,Send,SendTo
- public int Offset; // Receive,ReceiveFrom,Send,SendTo
- public int Size; // Receive,ReceiveFrom,Send,SendTo
- public SocketFlags SockFlags; // Receive,ReceiveFrom,Send,SendTo
- public Socket AcceptSocket; // AcceptReceive
- public IPAddress[] Addresses; // Connect
- public int Port; // Connect
- #if NET_2_0
- public IList<ArraySegment<byte>> Buffers; // Receive, Send
- #else
- public object Buffers; // Reserve this slot in older profiles
- #endif
- public bool ReuseSocket; // Disconnect
- // Return values
- Socket acc_socket;
- int total;
- bool completed_sync;
- bool completed;
- public bool blocking;
- internal int error;
- SocketOperation operation;
- public object ares;
- public int EndCalled;
- public SocketAsyncResult (Socket sock, object state, AsyncCallback callback, SocketOperation operation)
- {
- this.Sock = sock;
- this.blocking = sock.blocking;
- this.handle = sock.socket;
- this.state = state;
- this.callback = callback;
- this.operation = operation;
- SockFlags = SocketFlags.None;
- }
- public void CheckIfThrowDelayedException ()
- {
- if (delayedException != null) {
- Sock.connected = false;
- throw delayedException;
- }
- if (error != 0) {
- Sock.connected = false;
- throw new SocketException (error);
- }
- }
- void CompleteAllOnDispose (Queue queue)
- {
- object [] pending = queue.ToArray ();
- queue.Clear ();
- WaitCallback cb;
- for (int i = 0; i < pending.Length; i++) {
- SocketAsyncResult ares = (SocketAsyncResult) pending [i];
- cb = new WaitCallback (ares.CompleteDisposed);
- ThreadPool.QueueUserWorkItem (cb, null);
- }
- if (pending.Length == 0)
- Buffer = null;
- }
- void CompleteDisposed (object unused)
- {
- Complete ();
- }
- public void Complete ()
- {
- if (operation != SocketOperation.Receive && Sock.disposed)
- delayedException = new ObjectDisposedException (Sock.GetType ().ToString ());
- IsCompleted = true;
- Queue queue = null;
- if (operation == SocketOperation.Receive || operation == SocketOperation.ReceiveFrom) {
- queue = Sock.readQ;
- } else if (operation == SocketOperation.Send || operation == SocketOperation.SendTo) {
- queue = Sock.writeQ;
- }
- if (queue != null) {
- SocketAsyncCall sac = null;
- SocketAsyncResult req = null;
- lock (queue) {
- queue.Dequeue (); // remove ourselves
- if (queue.Count > 0) {
- req = (SocketAsyncResult) queue.Peek ();
- if (!Sock.disposed) {
- Worker worker = new Worker (req);
- sac = GetDelegate (worker, req.operation);
- } else {
- CompleteAllOnDispose (queue);
- }
- }
- }
- if (sac != null)
- sac.BeginInvoke (null, req);
- }
- if (callback != null)
- callback (this);
- Buffer = null;
- }
- SocketAsyncCall GetDelegate (Worker worker, SocketOperation op)
- {
- switch (op) {
- case SocketOperation.Receive:
- return new SocketAsyncCall (worker.Receive);
- case SocketOperation.ReceiveFrom:
- return new SocketAsyncCall (worker.ReceiveFrom);
- case SocketOperation.Send:
- return new SocketAsyncCall (worker.Send);
- case SocketOperation.SendTo:
- return new SocketAsyncCall (worker.SendTo);
- default:
- return null; // never happens
- }
- }
- public void Complete (bool synch)
- {
- completed_sync = synch;
- Complete ();
- }
- public void Complete (int total)
- {
- this.total = total;
- Complete ();
- }
- public void Complete (Exception e, bool synch)
- {
- completed_sync = synch;
- delayedException = e;
- Complete ();
- }
- public void Complete (Exception e)
- {
- delayedException = e;
- Complete ();
- }
- public void Complete (Socket s)
- {
- acc_socket = s;
- Complete ();
- }
- public void Complete (Socket s, int total)
- {
- acc_socket = s;
- this.total = total;
- Complete ();
- }
- public object AsyncState {
- get {
- return state;
- }
- }
- public WaitHandle AsyncWaitHandle {
- get {
- lock (this) {
- if (waithandle == null)
- waithandle = new ManualResetEvent (completed);
- }
- return waithandle;
- }
- set {
- waithandle=value;
- }
- }
- public bool CompletedSynchronously {
- get {
- return(completed_sync);
- }
- }
- public bool IsCompleted {
- get {
- return(completed);
- }
- set {
- completed=value;
- lock (this) {
- if (waithandle != null && value) {
- ((ManualResetEvent) waithandle).Set ();
- }
- }
- }
- }
-
- public Socket Socket {
- get {
- return acc_socket;
- }
- }
- public int Total {
- get { return total; }
- set { total = value; }
- }
- public SocketError ErrorCode
- {
- get {
- #if NET_2_0
- SocketException ex = delayedException as SocketException;
-
- if (ex != null)
- return(ex.SocketErrorCode);
- if (error != 0)
- return((SocketError)error);
- #endif
- return(SocketError.Success);
- }
- }
- }
- private sealed class Worker
- {
- SocketAsyncResult result;
- public Worker (SocketAsyncResult ares)
- {
- this.result = ares;
- }
- public void Accept ()
- {
- Socket acc_socket = null;
- try {
- acc_socket = result.Sock.Accept ();
- } catch (Exception e) {
- result.Complete (e);
- return;
- }
- result.Complete (acc_socket);
- }
- /* only used in 2.0 profile and newer, but
- * leave in older profiles to keep interface
- * to runtime consistent
- */
- public void AcceptReceive ()
- {
- Socket acc_socket = null;
-
- try {
- if (result.AcceptSocket == null) {
- acc_socket = result.Sock.Accept ();
- } else {
- acc_socket = result.AcceptSocket;
- result.Sock.Accept (acc_socket);
- }
- } catch (Exception e) {
- result.Complete (e);
- return;
- }
- /* It seems the MS runtime
- * special-cases 0-length requested
- * receive data. See bug 464201.
- */
- int total = 0;
- if (result.Size > 0) {
- try {
- SocketError error;
-
- total = acc_socket.Receive_nochecks (result.Buffer,
- result.Offset,
- result.Size,
- result.SockFlags,
- out error);
- } catch (Exception e) {
- result.Complete (e);
- return;
- }
- }
- result.Complete (acc_socket, total);
- }
- public void Connect ()
- {
- /* If result.EndPoint is non-null,
- * this is the standard one-address
- * connect attempt. Otherwise
- * Addresses must be non-null and
- * contain a list of addresses to try
- * to connect to; the first one to
- * succeed causes the rest of the list
- * to be ignored.
- */
- if (result.EndPoint != null) {
- try {
- if (!result.Sock.Blocking) {
- int success;
- result.Sock.Poll (-1, SelectMode.SelectWrite, out success);
- if (success == 0) {
- result.Sock.connected = true;
- } else {
- result.Complete (new SocketException (success));
- return;
- }
- } else {
- result.Sock.seed_endpoint = result.EndPoint;
- result.Sock.Connect (result.EndPoint);
- result.Sock.connected = true;
- }
- } catch (Exception e) {
- result.Complete (e);
- return;
- }
- result.Complete ();
- } else if (result.Addresses != null) {
- int error = (int) SocketError.InProgress; // why?
- foreach(IPAddress address in result.Addresses) {
- IPEndPoint iep = new IPEndPoint (address, result.Port);
- SocketAddress serial = iep.Serialize ();
-
- Socket.Connect_internal (result.Sock.socket, serial, out error);
- if (error == 0) {
- result.Sock.connected = true;
- result.Sock.seed_endpoint = iep;
- result.Complete ();
- return;
- } else if (error != (int)SocketError.InProgress &&
- error != (int)SocketError.WouldBlock) {
- continue;
- }
- if (!result.Sock.Blocking) {
- int success;
- result.Sock.Poll (-1, SelectMode.SelectWrite, out success);
- if (success == 0) {
- result.Sock.connected = true;
- result.Sock.seed_endpoint = iep;
- result.Complete ();
- return;
- }
- }
- }
-
- result.Complete (new SocketException (error));
- } else {
- result.Complete (new SocketException ((int)SocketError.AddressNotAvailable));
- }
- }
- /* Also only used in 2.0 profile and newer */
- public void Disconnect ()
- {
- #if NET_2_0
- try {
- result.Sock.Disconnect (result.ReuseSocket);
- } catch (Exception e) {
- result.Complete (e);
- return;
- }
- result.Complete ();
- #else
- result.Complete (new SocketException ((int)SocketError.Fault));
- #endif
- }
- public void Receive ()
- {
- // Actual recv() done in the runtime
- result.Complete ();
- }
- public void ReceiveFrom ()
- {
- int total = 0;
- try {
- total = result.Sock.ReceiveFrom_nochecks (result.Buffer,
- result.Offset,
- result.Size,
- result.SockFlags,
- ref result.EndPoint);
- } catch (Exception e) {
- result.Complete (e);
- return;
- }
- result.Complete (total);
- }
- public void ReceiveGeneric ()
- {
- #if NET_2_0
- int total = 0;
- try {
- SocketError error;
-
- total = result.Sock.Receive (result.Buffers, result.SockFlags, out error);
- } catch (Exception e) {
- result.Complete (e);
- return;
- }
-
- result.Complete (total);
- #else
- result.Complete (new SocketException ((int)SocketError.Fault));
- #endif
- }
- int send_so_far;
- void UpdateSendValues (int last_sent)
- {
- if (result.error == 0) {
- send_so_far += last_sent;
- result.Offset += last_sent;
- result.Size -= last_sent;
- }
- }
- public void Send ()
- {
- // Actual send() done in the runtime
- if (result.error == 0) {
- UpdateSendValues (result.Total);
- if (result.Sock.disposed) {
- result.Complete ();
- return;
- }
- if (result.Size > 0) {
- SocketAsyncCall sac = new SocketAsyncCall (this.Send);
- sac.BeginInvoke (null, result);
- return; // Have to finish writing everything. See bug #74475.
- }
- result.Total = send_so_far;
- }
- result.Complete ();
- }
- public void SendTo ()
- {
- int total = 0;
- try {
- total = result.Sock.SendTo_nochecks (result.Buffer,
- result.Offset,
- result.Size,
- result.SockFlags,
- result.EndPoint);
- UpdateSendValues (total);
- if (result.Size > 0) {
- SocketAsyncCall sac = new SocketAsyncCall (this.SendTo);
- sac.BeginInvoke (null, result);
- return; // Have to finish writing everything. See bug #74475.
- }
- result.Total = send_so_far;
- } catch (Exception e) {
- result.Complete (e);
- return;
- }
- result.Complete ();
- }
- public void SendGeneric ()
- {
- #if NET_2_0
- int total = 0;
- try {
- SocketError error;
-
- total = result.Sock.Send (result.Buffers, result.SockFlags, out error);
- } catch (Exception e) {
- result.Complete (e);
- return;
- }
-
- result.Complete (total);
- #else
- result.Complete (new SocketException ((int)SocketError.Fault));
- #endif
- }
- }
-
- private Queue readQ = new Queue (2);
- private Queue writeQ = new Queue (2);
- delegate void SocketAsyncCall ();
- #if NET_2_0
- private bool islistening;
- private bool useoverlappedIO;
- #endif
-
- static void AddSockets (ArrayList 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)
- {
- ArrayList list = new ArrayList ();
- 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 = (Socket []) list.ToArray (typeof (Socket));
- 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 cur_sock;
- 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 ((cur_sock = (Socket) currentList [currentIdx]) != sock) {
- currentList.RemoveAt (currentIdx);
- }
- currentIdx++;
- }
- }
- // private constructor used by Accept, which already
- // has a socket handle to use
- private 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 ()
- {
- #if NET_2_0
- 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) {
- }
- #endif
- }
- #if NET_2_0
- [MonoTODO]
- public Socket (SocketInformation socketInformation)
- {
- throw new NotImplementedException ("SocketInformation not figured out yet");
- // ifdef to avoid the warnings.
- #if false
- //address_family = socketInformation.address_family;
- //socket_type = socketInformation.socket_type;
- //protocol_type = socketInformation.protocol_type;
- address_family = AddressFamily.InterNetwork;
- socket_type = SocketType.Stream;
- protocol_type = ProtocolType.IP;
-
- int error;
- socket = Socket_internal (address_family, socket_type, protocol_type, out error);
- if (error != 0)
- throw new SocketException (error);
- SocketDefaults ();
- #endif
- }
- #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);
- }
- }
- #if NET_2_0
- 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;
- }
- }
- #endif
- 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, 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, out error);
- if (error != 0)
- throw new SocketException (error);
- return seed_endpoint.Create (sa);
- }
- }
- public SocketType SocketType {
- get {
- return(socket_type);
- }
- }
- #if NET_2_0
- 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.");
- } else
- e.AcceptSocket = new Socket (AddressFamily, SocketType, ProtocolType);
- try {
- e.DoOperation (SocketAsyncOperation.Accept, this);
- } catch {
- ((IDisposable)e).Dispose ();
- throw;
- }
- // We always return true for now
- return true;
- }
- #endif
-
- // 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);
- blocking_thread = Thread.CurrentThread;
- try {
- sock = Accept_internal(socket, out error, blocking);
- } catch (ThreadAbortException) {
- if (disposed) {
- Thread.ResetAbort ();
- error = (int) SocketError.Interrupted;
- }
- } finally {
- blocking_thread = null;
- }
- if (error != 0)
- 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);
- blocking_thread = Thread.CurrentThread;
-
- try {
- sock = Accept_internal (socket, out error, blocking);
- } catch (ThreadAbortException) {
- if (disposed) {
- Thread.ResetAbort ();
- error = (int)SocketError.Interrupted;
- }
- } finally {
- blocking_thread = null;
- }
-
- if (error != 0)
- 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 NET_2_0
- /* FIXME: check the 1.1 docs for this too */
- if (!isbound || !islistening)
- throw new InvalidOperationException ();
- #endif
- SocketAsyncResult req = new SocketAsyncResult (this, state, callback, SocketOperation.Accept);
- Worker worker = new Worker (req);
- SocketAsyncCall sac = new SocketAsyncCall (worker.Accept);
- sac.BeginInvoke (null, req);
- return(req);
- }
- #if NET_2_0
- 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);
- Worker worker = new Worker (req);
- SocketAsyncCall sac = new SocketAsyncCall (worker.AcceptReceive);
-
- req.Buffer = new byte[receiveSize];
- req.Offset = 0;
- req.Size = receiveSize;
- req.SockFlags = SocketFlags.None;
- sac.BeginInvoke (null, 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);
- Worker worker = new Worker (req);
- SocketAsyncCall sac = new SocketAsyncCall (worker.AcceptReceive);
-
- req.Buffer = new byte[receiveSize];
- req.Offset = 0;
- req.Size = receiveSize;
- req.SockFlags = SocketFlags.None;
- req.AcceptSocket = acceptSocket;
- sac.BeginInvoke (null, req);
- return(req);
- }
- #endif
- public IAsyncResult BeginConnect(EndPoint end_point,
- AsyncCallback callback,
- object state) {
- if (disposed && closed)
- throw new ObjectDisposedException (GetType ().ToString ());
- if (end_point == null)
- throw new ArgumentNullException ("end_point");
- SocketAsyncResult req = new SocketAsyncResult (this, state, callback, SocketOperation.Connect);
- req.EndPoint = end_point;
- // Bug #75154: Connect() should not succeed for .Any addresses.
- if (end_point is IPEndPoint) {
- IPEndPoint ep = (IPEndPoint) end_point;
- if (ep.Address.Equals (IPAddress.Any) || ep.Address.Equals (IPAddress.IPv6Any)) {
- req.Complete (new SocketException ((int) SocketError.AddressNotAvailable), true);
- return req;
- }
- }
- int error = 0;
- if (!blocking) {
- SocketAddress serial = end_point.Serialize ();
- Connect_internal (socket, serial, out error);
- if (error == 0) {
- // succeeded synch
- connected = true;
- req.Complete (true);
- } else if (error != (int) SocketError.InProgress && error != (int) SocketError.WouldBlock) {
- // error synch
- connected = false;
- req.Complete (new SocketException (error), true);
- }
- }
- if (blocking || error == (int) SocketError.InProgress || error == (int) SocketError.WouldBlock) {
- // continue asynch
- connected = false;
- Worker worker = new Worker (req);
- SocketAsyncCall sac = new SocketAsyncCall (worker.Connect);
- sac.BeginInvoke (null, req);
- }
- return(req);
- }
- #if NET_2_0
- 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 (islistening)
- throw new InvalidOperationException ();
- IPEndPoint iep = new IPEndPoint (address, port);
- return(BeginConnect (iep, callback, state));
- }
- public IAsyncResult BeginConnect (IPAddress[] addresses,
- int port,
- AsyncCallback callback,
- object state)
- {
- 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 ();
- SocketAsyncResult req = new SocketAsyncResult (this, state, callback, SocketOperation.Connect);
- req.Addresses = addresses;
- req.Port = port;
-
- connected = false;
- Worker worker = new Worker (req);
- SocketAsyncCall sac = new SocketAsyncCall (worker.Connect);
- sac.BeginInvoke (null, req);
-
- return(req);
- }
- 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 (islistening)
- throw new InvalidOperationException ();
- IPAddress [] addresses = Dns.GetHostAddresses (host);
- return (BeginConnect (addresses, 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;
-
- Worker worker = new Worker (req);
- SocketAsyncCall sac = new SocketAsyncCall (worker.Disconnect);
- sac.BeginInvoke (null, req);
-
- return(req);
- }
- #endif
-
- 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");
- if (offset < 0 || offset > buffer.Length)
- throw new ArgumentOutOfRangeException ("offset");
- if (size < 0 || offset + size > buffer.Length)
- throw new ArgumentOutOfRangeException ("size");
- SocketAsyncResult req;
- lock (readQ) {
- req = new SocketAsyncResult (this, state, callback, SocketOperation.Receive);
- req.Buffer = buffer;
- req.Offset = offset;
- req.Size = size;
- req.SockFlags = socket_flags;
- readQ.Enqueue (req);
- if (readQ.Count == 1) {
- Worker worker = new Worker (req);
- SocketAsyncCall sac = new SocketAsyncCall (worker.Receive);
- sac.BeginInvoke (null, req);
- }
- }
- return req;
- }
- #if NET_2_0
- 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;
- lock(readQ) {
- req = new SocketAsyncResult (this, state, callback, SocketOperation.ReceiveGeneric);
- req.Buffers = buffers;
- req.SockFlags = socketFlags;
- readQ.Enqueue (req);
- if (readQ.Count == 1) {
- Worker worker = new Worker (req);
- SocketAsyncCall sac = new SocketAsyncCall (worker.ReceiveGeneric);
- sac.BeginInvoke (null, 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));
- }
- #endif
- 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 (offset < 0)
- throw new ArgumentOutOfRangeException ("offset", "offset must be >= 0");
- if (size < 0)
- throw new ArgumentOutOfRangeException ("size", "size must be >= 0");
- if (offset + size > buffer.Length)
- throw new ArgumentOutOfRangeException ("offset, size", "offset + size exceeds the buffer length");
- SocketAsyncResult req;
- lock (readQ) {
- 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;
- readQ.Enqueue (req);
- if (readQ.Count == 1) {
- Worker worker = new Worker (req);
- SocketAsyncCall sac = new SocketAsyncCall (worker.ReceiveFrom);
- sac.BeginInvoke (null, req);
- }
- }
- return req;
- }
- #if NET_2_0
- [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");
- if (offset < 0 || offset > buffer.Length)
- throw new ArgumentOutOfRangeException ("offset");
- if (size < 0 || offset + size > buffer.Length)
- throw new ArgumentOutOfRangeException ("size");
- throw new NotImplementedException ();
- }
- #endif
- 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");
- if (offset < 0)
- throw new ArgumentOutOfRangeException ("offset", "offset must be >= 0");
- if (size < 0)
- throw new ArgumentOutOfRangeException ("size", "size must be >= 0");
- if (offset + size > buffer.Length)
- throw new ArgumentOutOfRangeException ("offset, size", "offset + size exceeds the buffer length");
- #if NET_2_0
- /* TODO: Check this exception in the 1.1 profile */
- if (!connected)
- throw new SocketException ((int)SocketError.NotConnected);
- #endif
- SocketAsyncResult req;
- lock (writeQ) {
- req = new SocketAsyncResult (this, state, callback, SocketOperation.Send);
- req.Buffer = buffer;
- req.Offset = offset;
- req.Size = size;
- req.SockFlags = socket_flags;
- writeQ.Enqueue (req);
- if (writeQ.Count == 1) {
- Worker worker = new Worker (req);
- SocketAsyncCall sac = new SocketAsyncCall (worker.Send);
- sac.BeginInvoke (null, req);
- }
- }
- return req;
- }
- #if NET_2_0
- 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;
- lock (writeQ) {
- req = new SocketAsyncResult (this, state, callback, SocketOperation.SendGeneric);
- req.Buffers = buffers;
- req.SockFlags = socketFlags;
- writeQ.Enqueue (req);
- if (writeQ.Count == 1) {
- Worker worker = new Worker (req);
- SocketAsyncCall sac = new SocketAsyncCall (worker.SendGeneric);
- sac.BeginInvoke (null, 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, callback, state));
- }
- #endif
- 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");
- if (offset < 0)
- throw new ArgumentOutOfRangeException ("offset", "offset must be >= 0");
- if (size < 0)
- throw new ArgumentOutOfRangeException ("size", "size must be >= 0");
- if (offset + size > buffer.Length)
- throw new ArgumentOutOfRangeException ("offset, size", "offset + size exceeds the buffer length");
- SocketAsyncResult req;
- lock (writeQ) {
- 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;
- writeQ.Enqueue (req);
- if (writeQ.Count == 1) {
- Worker worker = new Worker (req);
- SocketAsyncCall sac = new SocketAsyncCall (worker.SendTo);
- sac.BeginInvoke (null, 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 NET_2_0
- if (error == 0)
- isbound = true;
- #endif
-
- seed_endpoint = local_end;
- }
- #if NET_2_0
- public bool ConnectAsync (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 (islistening)
- throw new InvalidOperationException ("You may not perform this operation after calling the Listen method.");
- if (e.RemoteEndPoint == null)
- throw new ArgumentNullException ("remoteEP", "Value cannot be null.");
- if (e.BufferList != null)
- throw new ArgumentException ("Multiple buffers cannot be used with this method.");
- e.DoOperation (SocketAsyncOperation.Connect, this);
- // We always return true for now
- return true;
- }
- #endif
-
- #if NET_2_0
- 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;
- seed_endpoint = iep;
- return;
- } else if (error != (int)SocketError.InProgress &&
- error != (int)SocketError.WouldBlock) {
- continue;
- }
-
- if (!blocking) {
- Poll (-1, SelectMod…
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