public bool SendToAsync(SocketAsyncEventArgs e)
{
bool retval;
if (s_loggingEnabled)
{
Logging.Enter(Logging.Sockets, this, "SendToAsync", "");
}
if (CleanedUp)
{
throw new ObjectDisposedException(GetType().FullName);
}
if (e == null)
{
throw new ArgumentNullException("e");
}
if (e.RemoteEndPoint == null)
{
throw new ArgumentNullException("RemoteEndPoint");
}
// Check permissions for connect and prepare SocketAddress
EndPoint endPointSnapshot = e.RemoteEndPoint;
e._socketAddress = CheckCacheRemote(ref endPointSnapshot, false);
// Prepare for the native call.
e.StartOperationCommon(this);
e.StartOperationSendTo();
// Make the native call.
int bytesTransferred;
SocketError socketError;
// Wrap native methods with try/catch so event args object can be cleaned up.
try
{
socketError = e.DoOperationSendTo(_handle, out bytesTransferred);
}
catch (Exception ex)
{
// Clear in-use flag on event args object.
e.Complete();
throw ex;
}
// Handle completion when completion port is not posted.
if (socketError != SocketError.Success && socketError != SocketError.IOPending)
{
e.FinishOperationSyncFailure(socketError, bytesTransferred, SocketFlags.None);
retval = false;
}
else
{
retval = true;
}
if (s_loggingEnabled)
{
Logging.Exit(Logging.Sockets, this, "SendToAsync", retval);
}
return retval;
}
/// <summary>
/// Sends data asynchronously to a specific remote host.
/// </summary>
///
/// <returns>
/// Returns true if the I/O operation is pending. The <see cref="E:System.Net.Sockets.SocketAsyncEventArgs.Completed"/> event on the <paramref name="e"/> parameter will be raised upon completion of the operation. Returns false if the I/O operation completed synchronously. In this case, The <see cref="E:System.Net.Sockets.SocketAsyncEventArgs.Completed"/> event on the <paramref name="e"/> parameter will not be raised and the <paramref name="e"/> object passed as a parameter may be examined immediately after the method call returns to retrieve the result of the operation.
/// </returns>
/// <param name="e">The <see cref="T:System.Net.Sockets.SocketAsyncEventArgs"/> object to use for this asynchronous socket operation.</param><exception cref="T:System.ArgumentNullException">The <see cref="P:System.Net.Sockets.SocketAsyncEventArgs.RemoteEndPoint"/> cannot be null.</exception><exception cref="T:System.InvalidOperationException">A socket operation was already in progress using the <see cref="T:System.Net.Sockets.SocketAsyncEventArgs"/> object specified in the <paramref name="e"/> parameter.</exception><exception cref="T:System.NotSupportedException">Windows XP or later is required for this method.</exception><exception cref="T:System.ObjectDisposedException">The <see cref="T:System.Net.Sockets.Socket"/> has been closed. </exception><exception cref="T:System.Net.Sockets.SocketException">The protocol specified is connection-oriented, but the <see cref="T:System.Net.Sockets.Socket"/> is not yet connected.</exception>
public bool SendToAsync(SocketAsyncEventArgs e)
{
if (Socket.s_LoggingEnabled)
Logging.Enter(Logging.Sockets, (object) this, "SendToAsync", "");
if (this.CleanedUp)
throw new ObjectDisposedException(this.GetType().FullName);
if (e.RemoteEndPoint == null)
throw new ArgumentNullException("RemoteEndPoint");
EndPoint remoteEndPoint = e.RemoteEndPoint;
e.m_SocketAddress = this.CheckCacheRemote(ref remoteEndPoint, false);
e.StartOperationCommon(this);
e.StartOperationSendTo();
this.BindToCompletionPort();
int bytesTransferred;
SocketError socketError;
try
{
socketError = e.m_Buffer == null ? UnsafeNclNativeMethods.OSSOCK.WSASendTo(this.m_Handle, e.m_WSABufferArray, e.m_WSABufferArray.Length, out bytesTransferred, e.m_SocketFlags, e.m_PtrSocketAddressBuffer, e.m_SocketAddress.m_Size, e.m_PtrNativeOverlapped, IntPtr.Zero) : UnsafeNclNativeMethods.OSSOCK.WSASendTo(this.m_Handle, ref e.m_WSABuffer, 1, out bytesTransferred, e.m_SocketFlags, e.m_PtrSocketAddressBuffer, e.m_SocketAddress.m_Size, (SafeHandle) e.m_PtrNativeOverlapped, IntPtr.Zero);
}
catch (Exception ex)
{
e.Complete();
throw ex;
}
if (socketError != SocketError.Success)
socketError = (SocketError) Marshal.GetLastWin32Error();
bool flag;
if (socketError != SocketError.Success && socketError != SocketError.IOPending)
{
e.FinishOperationSyncFailure(socketError, bytesTransferred, SocketFlags.None);
flag = false;
}
else
flag = true;
if (Socket.s_LoggingEnabled)
Logging.Exit(Logging.Sockets, (object) this, "SendToAsync", (object) (bool) (flag ? 1 : 0));
return flag;
}
//
// SendToAsync
//
public bool SendToAsync(SocketAsyncEventArgs e) {
bool retval;
if(s_LoggingEnabled) Logging.Enter(Logging.Sockets, this, "SendToAsync", "");
// Throw if socket disposed
if(CleanedUp) {
throw new ObjectDisposedException(GetType().FullName);
}
// Throw if remote endpoint property is null.
if(e.RemoteEndPoint == null) {
throw new ArgumentNullException("RemoteEndPoint");
}
// Check permissions for connect and prepare SocketAddress
EndPoint endPointSnapshot = e.RemoteEndPoint;
e.m_SocketAddress = CheckCacheRemote(ref endPointSnapshot, false);
// Prepare for the native call.
e.StartOperationCommon(this);
e.StartOperationSendTo();
BindToCompletionPort();
// Make the native call.
int bytesTransferred;
SocketError socketError;
// Wrap native methods with try/catch so event args object can be cleaned up
try {
if(e.m_Buffer != null) {
// Single buffer case
socketError = UnsafeNclNativeMethods.OSSOCK.WSASendTo(
m_Handle,
ref e.m_WSABuffer,
1,
out bytesTransferred,
e.m_SocketFlags,
e.m_PtrSocketAddressBuffer,
e.m_SocketAddress.m_Size,
e.m_PtrNativeOverlapped,
IntPtr.Zero);
} else {
socketError = UnsafeNclNativeMethods.OSSOCK.WSASendTo(
m_Handle,
e.m_WSABufferArray,
e.m_WSABufferArray.Length,
out bytesTransferred,
e.m_SocketFlags,
e.m_PtrSocketAddressBuffer,
e.m_SocketAddress.m_Size,
e.m_PtrNativeOverlapped,
IntPtr.Zero);
}
}
catch(Exception ex) {
// clear in-use on event arg object
e.Complete();
throw ex;
}
// Native method emits single catch-all error code when error occurs.
// Must get Win32 error for specific error code.
if(socketError != SocketError.Success) {
socketError = (SocketError)Marshal.GetLastWin32Error();
}
// Handle completion when completion port is not posted.
if(socketError != SocketError.Success && socketError != SocketError.IOPending) {
e.FinishOperationSyncFailure(socketError, bytesTransferred, SocketFlags.None);
retval = false;
} else {
retval = true;
}
if(s_LoggingEnabled) Logging.Exit(Logging.Sockets, this, "SendToAsync", retval);
return retval;
}
public bool SendToAsync(SocketAsyncEventArgs e)
{
bool flag;
int num;
SocketError error;
if (s_LoggingEnabled)
{
Logging.Enter(Logging.Sockets, this, "SendToAsync", "");
}
if (this.CleanedUp)
{
throw new ObjectDisposedException(base.GetType().FullName);
}
if (e.RemoteEndPoint == null)
{
throw new ArgumentNullException("RemoteEndPoint");
}
EndPoint remoteEndPoint = e.RemoteEndPoint;
e.m_SocketAddress = this.CheckCacheRemote(ref remoteEndPoint, false);
e.StartOperationCommon(this);
e.StartOperationSendTo();
this.BindToCompletionPort();
try
{
if (e.m_Buffer != null)
{
error = UnsafeNclNativeMethods.OSSOCK.WSASendTo(this.m_Handle, ref e.m_WSABuffer, 1, out num, e.m_SocketFlags, e.m_PtrSocketAddressBuffer, e.m_SocketAddress.m_Size, e.m_PtrNativeOverlapped, IntPtr.Zero);
}
else
{
error = UnsafeNclNativeMethods.OSSOCK.WSASendTo(this.m_Handle, e.m_WSABufferArray, e.m_WSABufferArray.Length, out num, e.m_SocketFlags, e.m_PtrSocketAddressBuffer, e.m_SocketAddress.m_Size, e.m_PtrNativeOverlapped, IntPtr.Zero);
}
}
catch (Exception exception)
{
e.Complete();
throw exception;
}
if (error != SocketError.Success)
{
error = (SocketError) Marshal.GetLastWin32Error();
}
if ((error != SocketError.Success) && (error != SocketError.IOPending))
{
e.FinishOperationSyncFailure(error, num, SocketFlags.None);
flag = false;
}
else
{
flag = true;
}
if (s_LoggingEnabled)
{
Logging.Exit(Logging.Sockets, this, "SendToAsync", flag);
}
return flag;
}
