// Private callback invoked when icmpsendecho APIs succeed.
private static void PingCallback(object state, bool signaled)
{
Ping ping = (Ping)state;
PingCompletedEventArgs eventArgs = null;
bool cancelled = false;
AsyncOperation asyncOp = null;
SendOrPostCallback onPingCompletedDelegate = null;
try
{
lock (ping._lockObject)
{
cancelled = ping._cancelled;
asyncOp = ping._asyncOp;
onPingCompletedDelegate = ping._onPingCompletedDelegate;
if (!cancelled)
{
// Parse reply buffer.
SafeLocalAllocHandle buffer = ping._replyBuffer;
// Marshals and constructs new reply.
PingReply reply;
if (ping._ipv6)
{
Interop.IpHlpApi.Icmp6EchoReply icmp6Reply = Marshal.PtrToStructure <Interop.IpHlpApi.Icmp6EchoReply>(buffer.DangerousGetHandle());
reply = new PingReply(icmp6Reply, buffer.DangerousGetHandle(), ping._sendSize);
}
else
{
Interop.IpHlpApi.IcmpEchoReply icmpReply = Marshal.PtrToStructure <Interop.IpHlpApi.IcmpEchoReply>(buffer.DangerousGetHandle());
reply = new PingReply(icmpReply);
}
eventArgs = new PingCompletedEventArgs(reply, null, false, asyncOp.UserSuppliedState);
}
else
{
// Canceled.
eventArgs = new PingCompletedEventArgs(null, null, true, asyncOp.UserSuppliedState);
}
}
}
catch (Exception e)
{
// In case of failure, create a failed event arg.
PingException pe = new PingException(SR.net_ping, e);
eventArgs = new PingCompletedEventArgs(null, pe, false, asyncOp.UserSuppliedState);
}
finally
{
ping.FreeUnmanagedStructures();
ping.UnregisterWaitHandle();
ping.Finish(true);
}
asyncOp.PostOperationCompleted(onPingCompletedDelegate, eventArgs);
}
//private callback invoked when icmpsendecho apis succeed
private static void PingCallback(object state, bool signaled)
{
Ping ping = (Ping)state;
PingCompletedEventArgs eventArgs = null;
bool cancelled = false;
AsyncOperation asyncOp = null;
SendOrPostCallback onPingCompletedDelegate = null;
try
{
lock (ping.lockObject) {
cancelled = ping.cancelled;
asyncOp = ping.asyncOp;
onPingCompletedDelegate = ping.onPingCompletedDelegate;
if (!cancelled)
{
//parse reply buffer
SafeLocalFree buffer = ping.replyBuffer;
//marshals and constructs new reply
PingReply reply;
if (ping.ipv6)
{
Icmp6EchoReply icmp6Reply = (Icmp6EchoReply)Marshal.PtrToStructure(buffer.DangerousGetHandle(), typeof(Icmp6EchoReply));
reply = new PingReply(icmp6Reply, buffer.DangerousGetHandle(), ping.sendSize);
}
else
{
IcmpEchoReply icmpReply = (IcmpEchoReply)Marshal.PtrToStructure(buffer.DangerousGetHandle(), typeof(IcmpEchoReply));
reply = new PingReply(icmpReply);
}
eventArgs = new PingCompletedEventArgs(reply, null, false, asyncOp.UserSuppliedState);
}
else //cancelled
{
eventArgs = new PingCompletedEventArgs(null, null, true, asyncOp.UserSuppliedState);
}
}
}
// in case of failure, create a failed event arg
catch (Exception e) {
PingException pe = new PingException(SR.GetString(SR.net_ping), e);
eventArgs = new PingCompletedEventArgs(null, pe, false, asyncOp.UserSuppliedState);
}
finally {
ping.FreeUnmanagedStructures();
ping.UnregisterWaitHandle();
ping.Finish(true);
}
asyncOp.PostOperationCompleted(onPingCompletedDelegate, eventArgs);
}
private static void PingCallback(object state, bool signaled)
{
Ping ping = (Ping)state;
PingCompletedEventArgs arg = null;
bool cancelled = false;
AsyncOperation asyncOp = null;
SendOrPostCallback d = null;
try
{
lock (ping.lockObject)
{
cancelled = ping.cancelled;
asyncOp = ping.asyncOp;
d = ping.onPingCompletedDelegate;
if (!cancelled)
{
PingReply reply;
SafeLocalFree replyBuffer = ping.replyBuffer;
if (!ping.ipv6 && !ComNetOS.IsVista)
{
UnsafeNetInfoNativeMethods.IcmpParseReplies(replyBuffer.DangerousGetHandle(), 0x100ff);
}
if (ping.ipv6)
{
Icmp6EchoReply reply2 = (Icmp6EchoReply)Marshal.PtrToStructure(replyBuffer.DangerousGetHandle(), typeof(Icmp6EchoReply));
reply = new PingReply(reply2, replyBuffer.DangerousGetHandle(), ping.sendSize);
}
else
{
IcmpEchoReply reply3 = (IcmpEchoReply)Marshal.PtrToStructure(replyBuffer.DangerousGetHandle(), typeof(IcmpEchoReply));
reply = new PingReply(reply3);
}
arg = new PingCompletedEventArgs(reply, null, false, asyncOp.UserSuppliedState);
}
else
{
arg = new PingCompletedEventArgs(null, null, true, asyncOp.UserSuppliedState);
}
}
}
catch (Exception exception)
{
PingException error = new PingException(SR.GetString("net_ping"), exception);
arg = new PingCompletedEventArgs(null, error, false, asyncOp.UserSuppliedState);
}
finally
{
ping.FreeUnmanagedStructures();
ping.UnregisterWaitHandle();
ping.Finish(true);
}
asyncOp.PostOperationCompleted(d, arg);
}