private void initICCC()
{
// The message to request the current listeners:
var messageListeners = new ICCCGetListeners();
var messageListenersData = ICCCProcessor.INSTANCE.convertMessage2Data(messageListeners);
// The messagw to request the current hosts:
var messageHosts = new ICCCGetHosts();
var messageHostsData = ICCCProcessor.INSTANCE.convertMessage2Data(messageHosts);
this.initialOceanServersLock.EnterReadLock();
try
{
// An endless loop until we got the initial connection done:
while(true)
{
var chosenServer = "127.0.0.1:60000";
if(this.initialOceanServers.Count == 1)
{
// In case of only one, take that:
chosenServer = this.initialOceanServers[0];
}
if(this.initialOceanServers.Count > 1)
{
// Select a random server:
chosenServer = this.initialOceanServers[BetterRND.INSTANCE.nextInt(0, this.initialOceanServers.Count)];
}
//
// Build an listener regarding this server for the first message:
//
var tmpListener = new ICCCListener();
tmpListener.Channel = messageListeners.getChannel();
tmpListener.Command = messageListeners.getCommand();
tmpListener.IPAddressPort = chosenServer;
tmpListener.IsActive = true;
tmpListener.Kind = ICCCKind.KindOcean;
// Send the message:
var answerData = this.sendMessage(messageListenersData, tmpListener);
// Decode the answer:
var messageListenerAnswer = ICCCProcessor.INSTANCE.convertData2Message(answerData, messageListeners.getAnswerObject()) as ICCCGetListenersAnswer;
// Was the request successful?
if(messageListenerAnswer == null)
{
// No: Re-try!
Thread.Sleep(TimeSpan.FromSeconds(30));
continue;
}
// Store the listeners:
this.cacheLock.EnterWriteLock();
try
{
this.icccListenerCache.Clear();
var countEntries = messageListenerAnswer.Channels.Length;
for(var n = 0; n < countEntries; n++)
{
this.icccListenerCache.Add(new ICCCListener(messageListenerAnswer.Channels[n], messageListenerAnswer.Commands[n], messageListenerAnswer.IPAddressesPorts[n], true, messageListenerAnswer.Kinds[n]));
}
}
finally
{
this.cacheLock.ExitWriteLock();
}
//
// Build an listener regarding this server for the second message:
//
tmpListener = new ICCCListener();
tmpListener.Channel = messageHosts.getChannel();
tmpListener.Command = messageHosts.getCommand();
tmpListener.IPAddressPort = chosenServer;
tmpListener.IsActive = true;
tmpListener.Kind = ICCCKind.KindOcean;
// Send the message:
answerData = this.sendMessage(messageHostsData, tmpListener);
// Decode the answer:
var messageHostsAnswer = ICCCProcessor.INSTANCE.convertData2Message(answerData, messageHosts.getAnswerObject()) as ICCCGetHostsAnswer;
// Was the request successful?
if(messageHostsAnswer == null)
{
// No: Re-try!
Thread.Sleep(TimeSpan.FromSeconds(30));
continue;
}
// Store the hosts:
this.cacheLock.EnterWriteLock();
try
{
this.icccHostsCache.Clear();
var countEntries = messageHostsAnswer.Hostnames.Length;
for(var n = 0; n < countEntries; n++)
{
this.icccHostsCache.Add(new ICCCHost(messageHostsAnswer.Hostnames[n], messageHostsAnswer.IPAddressesPorts[n], messageHostsAnswer.Kinds[n]));
}
}
finally
{
this.cacheLock.ExitWriteLock();
}
break;
}
}
finally
{
this.initialOceanServersLock.ExitReadLock();
}
}
/// <summary>
/// Sends the message to the wire. This method is thread-safe!
/// </summary>
/// <param name="data">The sending message's data.</param>
/// <param name="listener">The receiving listener.</param>
/// <returns>The answer's data.</returns>
internal NameValueCollection sendMessage(NameValueCollection data, ICCCListener listener)
{
if(data == null || listener == null || data.Count < 2) // channel + command = 2
{
return new NameValueCollection();
}
try
{
// First of all, sign the message:
data = ICCCProcessor.INSTANCE.signMessage(data);
// Get a web client:
using(var web = new WebClient())
{
// Send the request / message to the wire and wait & read the answer:
var responseBytes = web.UploadValues(string.Format("http://{0}/ICCC", listener.IPAddressPort), data);
// Converts the answer's bytes to text:
var answerBody = ASCIIEncoding.UTF8.GetString(responseBytes);
// No answer?
if(answerBody == null || answerBody == string.Empty)
{
return new NameValueCollection();
}
// Convert the text to values:
return HttpUtility.ParseQueryString(answerBody);
}
}
catch
{
return new NameValueCollection();
}
}
