private void OnDataReceived(IAsyncResult ar)
{
bool doBeginReceive = true;
try {
SocketFlags flags = SocketFlags.None;
IPPacketInformation packetInfo;
int bytesRead = socket.EndReceiveMessageFrom(ar, ref flags, ref receiveEndpoint, out packetInfo);
IPEndPoint fromEndpoint = receiveEndpoint as IPEndPoint;
IPAddress destAddress = packetInfo.Address;
SocketDataReceivedEventArgs e = new SocketDataReceivedEventArgs(fromEndpoint, new IPEndPoint(destAddress, port), buffer, bytesRead);
lock (addressEntries) {
foreach (AddressEntry entry in addressEntries)
{
if (CompareSourceIP(entry.sourceAddress, fromEndpoint.Address) && CompareDestIP(entry.destAddress, destAddress))
{
entry.callback(e);
}
}
}
}
catch (ObjectDisposedException) {
doBeginReceive = false;
}
if (doBeginReceive)
{
int tryCount = 0;
while (tryCount < 3)
{
try {
receiveEndpoint = new IPEndPoint(IPAddress.Any, 0);
socket.BeginReceiveMessageFrom(buffer, 0, buffer.Length, SocketFlags.None, ref receiveEndpoint, OnDataReceived, null);
break;
}
catch (Exception) {
}
tryCount++;
}
}
}
private void OnDataReceived(IAsyncResult ar)
{
bool doBeginReceive = true;
try {
SocketFlags flags = SocketFlags.None;
IPPacketInformation packetInfo;
int bytesRead = socket.EndReceiveMessageFrom(ar, ref flags, ref receiveEndpoint, out packetInfo);
IPEndPoint fromEndpoint = receiveEndpoint as IPEndPoint;
IPAddress destAddress = packetInfo.Address;
SocketDataReceivedEventArgs e = new SocketDataReceivedEventArgs(fromEndpoint, new IPEndPoint(destAddress, port), buffer, bytesRead);
lock (addressEntries) {
foreach (AddressEntry entry in addressEntries) {
if (CompareSourceIP(entry.sourceAddress, fromEndpoint.Address) && CompareDestIP(entry.destAddress, destAddress)) {
entry.callback(e);
}
}
}
}
catch (ObjectDisposedException) {
doBeginReceive = false;
}
if (doBeginReceive) {
int tryCount = 0;
while (tryCount < 3) {
try {
receiveEndpoint = new IPEndPoint(IPAddress.Any, 0);
socket.BeginReceiveMessageFrom(buffer, 0, buffer.Length, SocketFlags.None, ref receiveEndpoint, OnDataReceived, null);
break;
}
catch (Exception) {
}
tryCount++;
}
}
}