public void Send(IPEndPoint des, CDNMessage msg)
{
try
{
using (TcpClient client = new TcpClient())
{
client.Connect(des);
if (client.Connected)
{
NetworkStream ns = client.GetStream();
using (StreamWriter sw = new StreamWriter(ns))
{
CDNMessage newMsg = msg.Clone() as CDNMessage;
newMsg.from = this.type;
newMsg.AddressUpdate(this);
sw.Write(Serializer <CDNMessage> .Serialize <SoapFormatter>(newMsg));
}
}
}
}
catch (Exception exp)
{
Console.WriteLine("Fail to send" + msg.ToString() + exp.Message);
}
}
private void refreshButton_Click(object sender, EventArgs e)
{
CDNMessage msg = new CDNMessage();
msg.Fill(CDNMessage.MSGID.SHOW);
server.Send(remoteIpAddressControl.Value, msg);
}
private void serverFile_DbClick(object sender, EventArgs e)
{
if (serverTreeView.SelectedNode is FileNode)
{
CDNMessage msg = new CDNMessage();
msg.Fill(CDNMessage.MSGID.DOWNLOAD,
Serializer <FileNode> .Serialize <SoapFormatter>(serverTreeView.SelectedNode as FileNode));
server.Send(remoteIpAddressControl.Value, msg);
}
}
public object Clone()
{
CDNMessage msg = new CDNMessage();
msg.id = this.id;
msg.content = this.content;
msg.client = this.client;
msg.cache = this.cache;
msg.server = this.server;
msg.from = this.from;
msg.to = this.to;
return(msg);
}
protected override async Task Handle(CDNMessage msg)
{
try
{
switch (msg.id)
{
case CDNMessage.MSGID.TEST:
{
MessageBox.Show("Successfully connected!");
}
break;
case CDNMessage.MSGID.SHOW:
{
remoteRoot = Serializer <DirectoryNode> .Deserialize <SoapFormatter>(msg.content);
TreeView v = (ui as CDNClientForm).serverTreeView;
v.Nodes.Clear();
v.Nodes.Add(remoteRoot);
}
break;
case CDNMessage.MSGID.DOWNLOAD:
{
String fileName = msg.content.Substring(0, msg.content.IndexOf("|||"));
String fileContent = msg.content.Substring(msg.content.IndexOf("|||") + 3);
using (FileStream fs = new FileStream(localRoot.info.FullName + "\\" + fileName, FileMode.Create, FileAccess.Write))
{
using (StreamWriter sw = new StreamWriter(fs))
{
sw.Write(fileContent);
}
}
localRoot.Scan();
TreeView v = (ui as CDNClientForm).clientTreeView;
v.Nodes.Clear();
v.Nodes.Add(localRoot);
}
break;
default:
break;
}
}
catch (Exception e)
{
Console.WriteLine(e);
}
}
private void HandleClient(CDNMessage msg)
{
msg.to = CNDTYPE.SERVER;
switch (msg.id)
{
case CDNMessage.MSGID.TEST:
{
Send(new IPEndPoint(IPAddress.Parse(msg.From().address), msg.From().port), msg);
}
break;
case CDNMessage.MSGID.SHOW:
{
Send((ui as CDNCacheForm).remoteIpAddressControl.Value, msg);
}
break;
case CDNMessage.MSGID.DOWNLOAD:
{
FileNode node = Serializer <FileNode> .Deserialize <SoapFormatter>(msg.content);
(ui as CDNCacheForm).logListBox.Items.Add("User request: file " + node.info.Name + " at " + DateTime.Now);
FileNode localNode = localRoot.Find(node.Text) as FileNode;
if (localNode != null)
{
using (FileStream fs = File.OpenRead(localNode.info.FullName))
{
using (StreamReader sr = new StreamReader(fs))
{
msg.content = localNode.info.Name + "|||" + sr.ReadToEnd();
Send(new IPEndPoint(IPAddress.Parse(msg.From().address), msg.From().port), msg);
}
}
(ui as CDNCacheForm).logListBox.Items.Add("Response: cached file " + localNode.info.Name);
}
else
{
Send((ui as CDNCacheForm).remoteIpAddressControl.Value, msg);
(ui as CDNCacheForm).logListBox.Items.Add("Response: file " + node.info.Name + "downloaded from the server");
}
}
break;
default:
break;
}
}
public async Task Idle()
{
while (true)
{
TcpClient client = await AcceptTcpClientAsync();
NetworkStream ns = client.GetStream();
using (StreamReader sr = new StreamReader(ns))
{
String context = await sr.ReadToEndAsync();
CDNMessage msg = Serializer <CDNMessage> .Deserialize <SoapFormatter>(context);
msg.to = this.type;
msg.AddressUpdate(this);
Handle(msg);
}
}
}
private void HandleServer(CDNMessage msg)
{
msg.to = CNDTYPE.CLIENT;
switch (msg.id)
{
case CDNMessage.MSGID.TEST:
{
MessageBox.Show("Successfully connected!");
}
break;
case CDNMessage.MSGID.SHOW:
{
Send(new IPEndPoint(IPAddress.Parse(msg.To().address), msg.To().port), msg);
}
break;
case CDNMessage.MSGID.DOWNLOAD:
{
String fileName = msg.content.Substring(0, msg.content.IndexOf("|||"));
String fileContent = msg.content.Substring(msg.content.IndexOf("|||") + 3);
using (FileStream fs = new FileStream(localRoot.info.FullName + "\\" + fileName, FileMode.Create, FileAccess.Write))
{
using (StreamWriter sw = new StreamWriter(fs))
{
sw.Write(fileContent);
}
}
localRoot.Scan();
TreeView v = (ui as CDNCacheForm).clientTreeView;
v.Nodes.Clear();
v.Nodes.Add(localRoot);
Send(new IPEndPoint(IPAddress.Parse(msg.To().address), msg.To().port), msg);
}
break;
default:
break;
}
}
protected override async Task Handle(CDNMessage msg)
{
try
{
//This message comes from the Server
if (msg.from == CNDTYPE.SERVER)
{
HandleServer(msg);
}
//This message comes from the Client
else if (msg.from == CNDTYPE.CLIENT)
{
HandleClient(msg);
}
else
{
throw new Exception("Wrong msg route!");
}
}
catch (Exception e)
{
Console.WriteLine(e);
}
}
protected override async Task Handle(CDNMessage msg)
{
try
{
String content = "";
switch (msg.id)
{
case CDNMessage.MSGID.TEST:
{
}
break;
case CDNMessage.MSGID.SHOW:
{
localRoot.Scan();
content = Serializer <DirectoryNode> .Serialize <SoapFormatter>(localRoot);
}
break;
case CDNMessage.MSGID.DOWNLOAD:
{
FileNode node = Serializer <FileNode> .Deserialize <SoapFormatter>(msg.content);
FileNode localNode = localRoot.Find(node.Text) as FileNode;
if (localNode != null)
{
using (FileStream fs = File.OpenRead(localNode.info.FullName))
{
using (StreamReader sr = new StreamReader(fs))
{
msg.content = localNode.info.Name + "|||" + sr.ReadToEnd();
Send(new IPEndPoint(IPAddress.Parse(msg.From().address), msg.From().port), msg);
}
}
}
else
{
Console.WriteLine("No such file!");
}
using (FileStream fs = File.OpenRead(node.info.FullName))
{
using (StreamReader sr = new StreamReader(fs))
{
content = node.info.Name + "|||";
content += sr.ReadToEnd();
}
}
}
break;
default:
break;
}
CDNMessage newMsg = msg.Clone() as CDNMessage;
newMsg.Fill(msg.id, content);
Send(new IPEndPoint(IPAddress.Parse(msg.From().address), msg.From().port), newMsg);
}
catch (Exception e)
{
Console.WriteLine(e);
}
}
protected virtual async Task Handle(CDNMessage msg)
{
}
