OnRemovePeer
(
PeerData peer
)
{
comboBox1.Items.Remove(peer);
}
ServiceFound
(
DNSSDService sref,
DNSSDFlags flags,
uint ifIndex,
String serviceName,
String regType,
String domain
)
{
if (serviceName != m_name)
{
PeerData peer = new PeerData();
peer.InterfaceIndex = ifIndex;
peer.Name = serviceName;
peer.Type = regType;
peer.Domain = domain;
peer.Address = null;
comboBox1.Items.Add(peer);
if (comboBox1.Items.Count == 1)
{
comboBox1.SelectedIndex = 0;
}
}
}
Equals(object other)
{
bool result = false;
if (other != null)
{
if ((object)this == other)
{
result = true;
}
else if (other is PeerData)
{
PeerData otherPeerData = (PeerData)other;
result = (this.Name == otherPeerData.Name);
}
}
return(result);
}
ServiceResolved
(
DNSSDService sref,
DNSSDFlags flags,
uint ifIndex,
String fullName,
String hostName,
ushort port,
TXTRecord txtRecord
)
{
m_resolver.Stop();
m_resolver = null;
PeerData peer = (PeerData)comboBox1.SelectedItem;
peer.Port = port;
try
{
m_resolver = m_service.QueryRecord(0, ifIndex, hostName, DNSSDRRType.kDNSSDType_A, DNSSDRRClass.kDNSSDClass_IN, m_eventManager);
}
catch
{
MessageBox.Show("QueryRecord Failed", "Error");
Application.Exit();
}
}
OnBrowseReply
(
ServiceRef sdRef,
ServiceFlags flags,
int interfaceIndex,
ErrorCode errorCode,
String name,
String type,
String domain)
{
if (errorCode == ErrorCode.NoError)
{
PeerData peer = new PeerData();
peer.InterfaceIndex = interfaceIndex;
peer.Name = name;
peer.Type = type;
peer.Domain = domain;
peer.Address = null;
if ((flags & ServiceFlags.Add) != 0)
{
Invoke(addPeerCallback, new Object[] { peer });
}
else if ((flags == 0) || ((flags & ServiceFlags.MoreComing) != 0))
{
Invoke(removePeerCallback, new Object[] { peer });
}
}
else
{
MessageBox.Show("OnBrowseReply returned an error code " + errorCode, "Error");
}
}
QueryAnswered
(
DNSSDService service,
DNSSDFlags flags,
uint ifIndex,
String fullName,
DNSSDRRType rrtype,
DNSSDRRClass rrclass,
Object rdata,
uint ttl
)
{
//
// Stop the resolve to reduce the burden on the network
//
m_resolver.Stop();
m_resolver = null;
PeerData peer = (PeerData)comboBox1.SelectedItem;
uint bits = BitConverter.ToUInt32((Byte[])rdata, 0);
System.Net.IPAddress address = new System.Net.IPAddress(bits);
peer.Address = address;
}
OnResolveAddress
(
System.Net.IPAddress address
)
{
resolver.Dispose();
PeerData peer = (PeerData)comboBox1.SelectedItem;
peer.Address = address;
}
OnAddPeer
(
PeerData peer
)
{
comboBox1.Items.Add(peer);
if (comboBox1.Items.Count == 1)
{
comboBox1.SelectedIndex = 0;
}
}
//
// called when typing in message box
//
private void textBox2_TextChanged(object sender, System.EventArgs e)
{
PeerData peer = (PeerData)comboBox1.SelectedItem;
if ((peer.Address != null) && (textBox2.Text.Length > 0))
{
button1.Enabled = true;
}
else
{
button1.Enabled = false;
}
}
//
// called when peer target changes
//
/// <summary>
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void comboBox1_SelectedIndexChanged(object sender, System.EventArgs e)
{
PeerData peer = (PeerData)comboBox1.SelectedItem;
try
{
resolver = DNSService.Resolve(0, 0, peer.Name, peer.Type, peer.Domain, new DNSService.ResolveReply(OnResolveReply));
}
catch
{
MessageBox.Show("Unable to Resolve service", "Error");
Application.Exit();
}
}
//
// called when peer target changes
//
/// <summary>
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void comboBox1_SelectedIndexChanged(object sender, System.EventArgs e)
{
PeerData peer = (PeerData)comboBox1.SelectedItem;
try
{
m_resolver = m_service.Resolve(0, peer.InterfaceIndex, peer.Name, peer.Type, peer.Domain, m_eventManager);
}
catch
{
MessageBox.Show("Unable to Resolve service", "Error");
Application.Exit();
}
}
//
// send the message to a peer
//
private void button1_Click(object sender, System.EventArgs e)
{
PeerData peer = (PeerData)comboBox1.SelectedItem;
String message = m_name + ": " + textBox2.Text;
Byte[] bytes = Encoding.UTF8.GetBytes(message);
IPEndPoint endPoint = new IPEndPoint(peer.Address, peer.Port);
m_socket.SendTo(bytes, endPoint);
richTextBox1.SelectionColor = Color.Black;
richTextBox1.AppendText(textBox2.Text + "\n");
textBox2.Text = "";
}
//
// send the message to a peer
//
private void button1_Click(object sender, System.EventArgs e)
{
PeerData peer = (PeerData)comboBox1.SelectedItem;
String message = myName + ": " + textBox2.Text;
Byte[] bytes = Encoding.UTF8.GetBytes(message);
UdpClient udpSocket = new UdpClient(peer.Address.ToString(), peer.Port);
udpSocket.Send(bytes, bytes.Length);
richTextBox1.SelectionColor = Color.Black;
richTextBox1.AppendText(textBox2.Text + "\n");
textBox2.Text = "";
}
ServiceLost
(
DNSSDService sref,
DNSSDFlags flags,
uint ifIndex,
String serviceName,
String regType,
String domain
)
{
PeerData peer = new PeerData();
peer.InterfaceIndex = ifIndex;
peer.Name = serviceName;
peer.Type = regType;
peer.Domain = domain;
peer.Address = null;
comboBox1.Items.Remove(peer);
}
OnResolveService
(
ResolveData data
)
{
resolver.Dispose();
PeerData peer = (PeerData)comboBox1.SelectedItem;
peer.Port = data.Port;
try
{
resolver = DNSService.QueryRecord(0, 0, data.HostName, /* ns_t_a */ 1, /* ns_t_c */ 1, new DNSService.QueryRecordReply(OnQueryRecordReply));
}
catch
{
MessageBox.Show("QueryRecord Failed", "Error");
Application.Exit();
}
}
//
// OnRemovePeer
//
// Called when DNSServices detects a P2P peer has left
// the network
//
// This is called (indirectly) from OnBrowseReply()
//
private void OnRemovePeer(
PeerData peer
)
{
comboBox1.Items.Remove(peer);
}
//
// OnBrowseReply
//
// Called by DNSServices core as a result of DNSService.Browse()
// call
//
// This is called from a worker thread by DNSService core.
//
private void OnBrowseReply(
ServiceRef sdRef,
ServiceFlags flags,
int interfaceIndex,
ErrorCode errorCode,
String name,
String type,
String domain)
{
if (errorCode == ErrorCode.NoError)
{
PeerData peer = new PeerData();
peer.InterfaceIndex = interfaceIndex;
peer.Name = name;
peer.Type = type;
peer.Domain = domain;
peer.Address = null;
if ((flags & ServiceFlags.Add) != 0)
{
Invoke(addPeerCallback, new Object[]{peer});
}
else if ((flags == 0) || ((flags & ServiceFlags.MoreComing) != 0))
{
Invoke(removePeerCallback, new Object[]{peer});
}
}
else
{
MessageBox.Show("OnBrowseReply returned an error code " + errorCode, "Error");
}
}
//
// ServiceLost
//
// Called by DNSServices core as a result of a Browse call
//
public void ServiceLost(
DNSSDService sref,
DNSSDFlags flags,
uint ifIndex,
String serviceName,
String regType,
String domain
)
{
PeerData peer = new PeerData();
peer.InterfaceIndex = ifIndex;
peer.Name = serviceName;
peer.Type = regType;
peer.Domain = domain;
peer.Address = null;
comboBox1.Items.Remove(peer);
}
//
// OnAddPeer
//
// Called when DNSServices detects a new P2P Chat peer has
// joined.
//
// This is called (indirectly) from OnBrowseReply()
//
private void OnAddPeer(
PeerData peer
)
{
comboBox1.Items.Add(peer);
if (comboBox1.Items.Count == 1)
{
comboBox1.SelectedIndex = 0;
}
}
//
// ServiceFound
//
// Called by DNSServices core as a result of a Browse call
//
public void ServiceFound(
DNSSDService sref,
DNSSDFlags flags,
uint ifIndex,
String serviceName,
String regType,
String domain
)
{
if (serviceName != m_name)
{
PeerData peer = new PeerData();
peer.InterfaceIndex = ifIndex;
peer.Name = serviceName;
peer.Type = regType;
peer.Domain = domain;
peer.Address = null;
comboBox1.Items.Add(peer);
if (comboBox1.Items.Count == 1)
{
comboBox1.SelectedIndex = 0;
}
}
}
